Nicolas Cellier uploaded a new version of EToys to project The Trunk: http://source.squeak.org/trunk/EToys-nice.292.mcz
==================== Summary ====================
Name: EToys-nice.292 Author: nice Time: 15 April 2017, 3:44:39.800437 pm UUID: 39acfe15-791f-41c6-8aad-d679664643e7 Ancestors: EToys-eem.291
Remove the Multi*Scanner, MultiNewParagraph, MultiComposer because they have no additional value.
=============== Diff against EToys-eem.291 ===============
Item was changed: SystemOrganization addCategory: #'Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-CustomEvents'! SystemOrganization addCategory: #'Etoys-Experimental'! SystemOrganization addCategory: #'Etoys-Outliner'! SystemOrganization addCategory: #'Etoys-Protocols'! SystemOrganization addCategory: #'Etoys-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Scripting Tiles'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Base'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Connectors'! SystemOrganization addCategory: #'Etoys-Squeakland-EToys-Kedama'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Calendar'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Debugger'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Help'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Input'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting Tiles'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-SpeechBubbles'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Tile Scriptors'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-External'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Text'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Intersection'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Simplification'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Triangulation'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-AdditionalMorphs'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Charts'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Postscript Filters'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-WebCam'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Basic'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Books'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Components'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Demo'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Experimental'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Games'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Games-Chess'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-GeeMail'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Mentoring'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Navigators'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PartsBin'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PDA'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Windows'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Worlds'! SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-Languages'! - SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-Scanning'! SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-TextConversion'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Formatter'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Forms'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Parser'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Parser Entities'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Tokenizer'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-MIME'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-TelNet WordNet'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-UI'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-Url'! SystemOrganization addCategory: #'Etoys-Squeakland-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Interface'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Ogg'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Scores'! SystemOrganization addCategory: #'Etoys-Squeakland-ST80-Morphic'! SystemOrganization addCategory: #'Etoys-Squeakland-SUnit'! SystemOrganization addCategory: #'Etoys-Squeakland-Sugar'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Clipboard-Extended'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Compiler'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Exceptions Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Changes'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Explorer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-File Contents Browser'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Process Browser'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ObjectVectors'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTreeTransformer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTree-AttributeDefinition'! SystemOrganization addCategory: #'Etoys-Stacks'! SystemOrganization addCategory: #'Etoys-StarSqueak'! SystemOrganization addCategory: #'Etoys-Support'! SystemOrganization addCategory: #'Etoys-Tests'! SystemOrganization addCategory: #'Etoys-Tile Scriptors'! SystemOrganization addCategory: #'Etoys-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-SISS-Serialization'! SystemOrganization addCategory: #'Etoys-OLPC-Display'! SystemOrganization addCategory: #'Etoys-ReleaseBuilder'! SystemOrganization addCategory: #'Etoys-UserInterfaceTheme'!
Item was removed: - ----- Method: GrafPort>>displayScannerForMulti:foreground:background:ignoreColorChanges: (in category '*Etoys-Squeakland-accessing') ----- - displayScannerForMulti: para foreground: foreColor background: backColor ignoreColorChanges: shadowMode - - ((para isMemberOf: MultiNewParagraph) or: [para text string isByteString]) ifTrue: [ - ^ (MultiDisplayScanner new text: para presentationText textStyle: para textStyle - foreground: foreColor background: backColor fillBlt: self - ignoreColorChanges: shadowMode) - setPort: self clone - ]. - ^ (DisplayScanner new text: para text textStyle: para textStyle - foreground: foreColor background: backColor fillBlt: self - ignoreColorChanges: shadowMode) - setPort: self clone - !
Item was removed: - MultiCharacterScanner subclass: #MultiCanvasCharacterScanner - instanceVariableNames: 'canvas fillBlt foregroundColor runX lineY' - classVariableNames: '' - poolDictionaries: '' - category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>canvas: (in category 'accessing') ----- - canvas: aCanvas - "set the canvas to draw on" - canvas ifNotNil: [ self inform: 'initializing twice!!' ]. - canvas := aCanvas!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>cr (in category 'stop conditions') ----- - cr - "When a carriage return is encountered, simply increment the pointer - into the paragraph." - - lastIndex := lastIndex + 1. - ^false!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>crossedX (in category 'stop conditions') ----- - crossedX - "This condition will sometimes be reached 'legally' during display, when, - for instance the space that caused the line to wrap actually extends over - the right boundary. This character is allowed to display, even though it - is technically outside or straddling the clipping ectangle since it is in - the normal case not visible and is in any case appropriately clipped by - the scanner." - - "self fillLeading." - ^ true !
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>displayLine:offset:leftInRun: (in category 'scanning') ----- - displayLine: textLine offset: offset leftInRun: leftInRun - | nowLeftInRun done startLoc startIndex stopCondition | - "largely copied from DisplayScanner's routine" - - line := textLine. - foregroundColor ifNil: [ foregroundColor := Color black ]. - leftMargin := (line leftMarginForAlignment: alignment) + offset x. - - rightMargin := line rightMargin + offset x. - lineY := line top + offset y. - lastIndex := textLine first. - leftInRun <= 0 - ifTrue: [self setStopConditions. "also sets the font" - nowLeftInRun := text runLengthFor: lastIndex] - ifFalse: [nowLeftInRun := leftInRun]. - runX := destX := leftMargin. - - runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last. - spaceCount := 0. - done := false. - - [done] whileFalse: [ - "remember where this portion of the line starts" - startLoc := destX@destY. - startIndex := lastIndex. - - "find the end of this portion of the line" - stopCondition := self scanCharactersFrom: lastIndex to: runStopIndex - in: text string rightX: rightMargin stopConditions: stopConditions - kern: kern "displaying: false". - - "display that portion of the line" - canvas drawString: text string - from: startIndex to: lastIndex - at: startLoc - font: font - color: foregroundColor. - - "handle the stop condition" - done := self perform: stopCondition - ]. - - ^runStopIndex - lastIndex!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>doesDisplaying (in category 'private') ----- - doesDisplaying - ^false "it doesn't do displaying using copyBits"!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>endOfRun (in category 'stop conditions') ----- - endOfRun - "The end of a run in the display case either means that there is actually - a change in the style (run code) to be associated with the string or the - end of this line has been reached." - | runLength | - - lastIndex = line last ifTrue: [^true]. - runX := destX. - runLength := text runLengthFor: (lastIndex := lastIndex + 1). - runStopIndex := lastIndex + (runLength - 1) min: line last. - self setStopConditions. - ^ false!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>paddedSpace (in category 'stop conditions') ----- - paddedSpace - "Each space is a stop condition when the alignment is right justified. - Padding must be added to the base width of the space according to - which space in the line this space is and according to the amount of - space that remained at the end of the line when it was composed." - - destX := destX + spaceWidth + (line justifiedPadFor: spaceCount). - - lastIndex := lastIndex + 1. - ^ false!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>setFont (in category 'private') ----- - setFont - foregroundColor ifNil: [foregroundColor := Color black]. - super setFont. - baselineY := lineY + line baseline. - destY := baselineY - font ascent.!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>setStopConditions (in category 'stop conditions') ----- - setStopConditions - "Set the font and the stop conditions for the current run." - - self setFont. - self setConditionArray: (textStyle alignment = Justified ifTrue: [#paddedSpace]). - !
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>tab (in category 'stop conditions') ----- - tab - - destX := (alignment == Justified and: [self leadingTab not]) - ifTrue: "imbedded tabs in justified text are weird" - [destX + (textStyle tabWidth - (line justifiedTabDeltaFor: spaceCount)) max: destX] - ifFalse: - [textStyle nextTabXFrom: destX - leftMargin: leftMargin - rightMargin: rightMargin]. - - lastIndex := lastIndex + 1. - ^ false!
Item was removed: - ----- Method: MultiCanvasCharacterScanner>>textColor: (in category 'private') ----- - textColor: color - foregroundColor := color!
Item was removed: - MultiCharacterScanner subclass: #MultiCharacterBlockScanner - instanceVariableNames: 'characterPoint characterIndex lastCharacter lastCharacterExtent lastSpaceOrTabExtent nextLeftMargin specialWidth' - classVariableNames: '' - poolDictionaries: '' - category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>buildCharacterBlockIn: (in category 'private') ----- - buildCharacterBlockIn: para - | lineIndex runLength lineStop done stopCondition | - "handle nullText" - (para numberOfLines = 0 or: [text size = 0]) - ifTrue: [^ CharacterBlock new stringIndex: 1 "like being off end of string" - text: para text - topLeft: (para leftMarginForDisplayForLine: 1 alignment: (alignment ifNil:[textStyle alignment])) - @ para compositionRectangle top - extent: 0 @ textStyle lineGrid]. - "find the line" - lineIndex := para lineIndexOfTop: characterPoint y. - destY := para topAtLineIndex: lineIndex. - line := para lines at: lineIndex. - rightMargin := para rightMarginForDisplay. - - (lineIndex = para numberOfLines and: - [(destY + line lineHeight) < characterPoint y]) - ifTrue: ["if beyond lastLine, force search to last character" - self characterPointSetX: rightMargin] - ifFalse: [characterPoint y < (para compositionRectangle) top - ifTrue: ["force search to first line" - characterPoint := (para compositionRectangle) topLeft]. - characterPoint x > rightMargin - ifTrue: [self characterPointSetX: rightMargin]]. - destX := (leftMargin := para leftMarginForDisplayForLine: lineIndex alignment: (alignment ifNil:[textStyle alignment])). - nextLeftMargin := para leftMarginForDisplayForLine: lineIndex+1 alignment: (alignment ifNil:[textStyle alignment]). - lastIndex := line first. - - self setStopConditions. "also sets font" - runLength := (text runLengthFor: line first). - characterIndex == nil - ifTrue: [lineStop := line last "characterBlockAtPoint"] - ifFalse: [lineStop := characterIndex "characterBlockForIndex"]. - (runStopIndex := lastIndex + (runLength - 1)) > lineStop - ifTrue: [runStopIndex := lineStop]. - lastCharacterExtent := 0 @ line lineHeight. - spaceCount := 0. done := false. - self handleIndentation. - - [done] - whileFalse: - [stopCondition := self scanCharactersFrom: lastIndex to: runStopIndex - in: text string rightX: characterPoint x - stopConditions: stopConditions kern: kern. - - "see setStopConditions for stopping conditions for character block operations." - self lastCharacterExtentSetX: (font widthOf: (text at: lastIndex)). - (self perform: stopCondition) ifTrue: - [characterIndex == nil - ifTrue: ["characterBlockAtPoint" - ^ CharacterBlock new stringIndex: lastIndex text: text - topLeft: characterPoint + (font descentKern @ 0) - extent: lastCharacterExtent] - ifFalse: ["characterBlockForIndex" - ^ CharacterBlock new stringIndex: lastIndex text: text - topLeft: characterPoint + ((font descentKern) - kern @ 0) - extent: lastCharacterExtent]]]!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>characterBlockAtPoint:in: (in category 'scanning') ----- - characterBlockAtPoint: aPoint in: aParagraph - "Answer a CharacterBlock for character in aParagraph at point aPoint. It - is assumed that aPoint has been transformed into coordinates appropriate - to the text's destination form rectangle and the composition rectangle." - - self initializeFromParagraph: aParagraph clippedBy: aParagraph clippingRectangle. - characterPoint := aPoint. - ^self buildCharacterBlockIn: aParagraph!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>characterBlockAtPoint:index:in: (in category 'scanning') ----- - characterBlockAtPoint: aPoint index: index in: textLine - "This method is the Morphic characterBlock finder. It combines - MVC's characterBlockAtPoint:, -ForIndex:, and buildCharcterBlock:in:" - | runLength lineStop done stopCondition | - line := textLine. - rightMargin := line rightMargin. - lastIndex := line first. - self setStopConditions. "also sets font" - characterIndex := index. " == nil means scanning for point" - characterPoint := aPoint. - (characterPoint isNil or: [characterPoint y > line bottom]) - ifTrue: [characterPoint := line bottomRight]. - (text isEmpty or: [(characterPoint y < line top or: [characterPoint x < line left]) - or: [characterIndex notNil and: [characterIndex < line first]]]) - ifTrue: [^ (CharacterBlock new stringIndex: line first text: text - topLeft: line leftMargin@line top extent: 0 @ textStyle lineGrid) - textLine: line]. - destX := leftMargin := line leftMarginForAlignment: alignment. - destY := line top. - runLength := text runLengthFor: line first. - characterIndex - ifNotNil: [lineStop := characterIndex "scanning for index"] - ifNil: [lineStop := line last "scanning for point"]. - runStopIndex := lastIndex + (runLength - 1) min: lineStop. - lastCharacterExtent := 0 @ line lineHeight. - spaceCount := 0. - - done := false. - [done] whileFalse: - [stopCondition := self scanCharactersFrom: lastIndex to: runStopIndex - in: text string rightX: characterPoint x - stopConditions: stopConditions kern: kern. - "see setStopConditions for stopping conditions for character block operations." - self lastCharacterExtentSetX: (specialWidth - ifNil: [font widthOf: (text at: lastIndex)] - ifNotNil: [specialWidth]). - (self perform: stopCondition) ifTrue: - [characterIndex - ifNil: [ - "Result for characterBlockAtPoint: " - (stopCondition ~~ #cr and: [ lastIndex == line last - and: [ aPoint x > ((characterPoint x) + (lastCharacterExtent x / 2)) ]]) - ifTrue: [ "Correct for right half of last character in line" - ^ (CharacterBlock new stringIndex: lastIndex + 1 - text: text - topLeft: characterPoint + (lastCharacterExtent x @ 0) + (font descentKern @ 0) - extent: 0 @ lastCharacterExtent y) - textLine: line ]. - ^ (CharacterBlock new stringIndex: lastIndex - text: text topLeft: characterPoint + (font descentKern @ 0) - extent: lastCharacterExtent - (font baseKern @ 0)) - textLine: line] - ifNotNil: ["Result for characterBlockForIndex: " - ^ (CharacterBlock new stringIndex: characterIndex - text: text topLeft: characterPoint + ((font descentKern) - kern @ 0) - extent: lastCharacterExtent) - textLine: line]]]!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>characterBlockForIndex:in: (in category 'scanning') ----- - characterBlockForIndex: targetIndex in: aParagraph - "Answer a CharacterBlock for character in aParagraph at targetIndex. The - coordinates in the CharacterBlock will be appropriate to the intersection - of the destination form rectangle and the composition rectangle." - - self - initializeFromParagraph: aParagraph - clippedBy: aParagraph clippingRectangle. - characterIndex := targetIndex. - characterPoint := - aParagraph rightMarginForDisplay @ - (aParagraph topAtLineIndex: - (aParagraph lineIndexOfCharacterIndex: characterIndex)). - ^self buildCharacterBlockIn: aParagraph!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>characterPointSetX: (in category 'private') ----- - characterPointSetX: xVal - characterPoint := xVal @ characterPoint y!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>cr (in category 'stop conditions') ----- - cr - "Answer a CharacterBlock that specifies the current location of the mouse - relative to a carriage return stop condition that has just been - encountered. The ParagraphEditor convention is to denote selections by - CharacterBlocks, sometimes including the carriage return (cursor is at - the end) and sometimes not (cursor is in the middle of the text)." - - ((characterIndex ~= nil - and: [characterIndex > text size]) - or: [(line last = text size) - and: [(destY + line lineHeight) < characterPoint y]]) - ifTrue: ["When off end of string, give data for next character" - destY := destY + line lineHeight. - baselineY := line lineHeight. - lastCharacter := nil. - characterPoint := (nextLeftMargin ifNil: [leftMargin]) @ destY. - lastIndex := lastIndex + 1. - self lastCharacterExtentSetX: 0. - ^ true]. - lastCharacter := CR. - characterPoint := destX @ destY. - self lastCharacterExtentSetX: rightMargin - destX. - ^true!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>crossedX (in category 'stop conditions') ----- - crossedX - "Text display has wrapping. The scanner just found a character past the x - location of the cursor. We know that the cursor is pointing at a character - or before one." - - | leadingTab currentX | - characterIndex == nil ifFalse: [ - "If the last character of the last line is a space, - and it crosses the right margin, then locating - the character block after it is impossible without this hack." - characterIndex > text size ifTrue: [ - lastIndex := characterIndex. - characterPoint := (nextLeftMargin ifNil: [leftMargin]) @ (destY + line lineHeight). - ^true]]. - characterPoint x <= (destX + (lastCharacterExtent x // 2)) - ifTrue: [lastCharacter := (text at: lastIndex). - characterPoint := destX @ destY. - ^true]. - lastIndex >= line last - ifTrue: [lastCharacter := (text at: line last). - characterPoint := destX @ destY. - ^true]. - - "Pointing past middle of a character, return the next character." - lastIndex := lastIndex + 1. - lastCharacter := text at: lastIndex. - currentX := destX + lastCharacterExtent x + kern. - self lastCharacterExtentSetX: (font widthOf: lastCharacter). - characterPoint := currentX @ destY. - lastCharacter = Space ifFalse: [^ true]. - - "Yukky if next character is space or tab." - alignment = Justified ifTrue: - [self lastCharacterExtentSetX: - (lastCharacterExtent x + (line justifiedPadFor: (spaceCount + 1))). - ^ true]. - - true ifTrue: [^ true]. - "NOTE: I find no value to the following code, and so have defeated it - DI" - - "See tabForDisplay for illumination on the following awfulness." - leadingTab := true. - line first to: lastIndex - 1 do: - [:index | (text at: index) ~= Tab ifTrue: [leadingTab := false]]. - (alignment ~= Justified or: [leadingTab]) - ifTrue: [self lastCharacterExtentSetX: (textStyle nextTabXFrom: currentX - leftMargin: leftMargin rightMargin: rightMargin) - - currentX] - ifFalse: [self lastCharacterExtentSetX: (((currentX + (textStyle tabWidth - - (line justifiedTabDeltaFor: spaceCount))) - - currentX) max: 0)]. - ^ true!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>endOfRun (in category 'stop conditions') ----- - endOfRun - "Before arriving at the cursor location, the selection has encountered an - end of run. Answer false if the selection continues, true otherwise. Set - up indexes for building the appropriate CharacterBlock." - - | runLength lineStop | - (((characterIndex ~~ nil and: - [runStopIndex < characterIndex and: [runStopIndex < text size]]) - or: [characterIndex == nil and: [lastIndex < line last]]) or: [ - ((lastIndex < line last) - and: [((text at: lastIndex) leadingChar ~= (text at: lastIndex+1) leadingChar) - and: [lastIndex ~= characterIndex]])]) - ifTrue: ["We're really at the end of a real run." - runLength := (text runLengthFor: (lastIndex := lastIndex + 1)). - characterIndex ~~ nil - ifTrue: [lineStop := characterIndex "scanning for index"] - ifFalse: [lineStop := line last "scanning for point"]. - (runStopIndex := lastIndex + (runLength - 1)) > lineStop - ifTrue: [runStopIndex := lineStop]. - self setStopConditions. - ^false]. - - lastCharacter := text at: lastIndex. - characterPoint := destX @ destY. - ((lastCharacter = Space and: [alignment = Justified]) - or: [lastCharacter = Tab and: [lastSpaceOrTabExtent notNil]]) - ifTrue: [lastCharacterExtent := lastSpaceOrTabExtent]. - characterIndex ~~ nil - ifTrue: ["If scanning for an index and we've stopped on that index, - then we back destX off by the width of the character stopped on - (it will be pointing at the right side of the character) and return" - runStopIndex = characterIndex - ifTrue: [self characterPointSetX: destX - lastCharacterExtent x. - ^true]. - "Otherwise the requested index was greater than the length of the - string. Return string size + 1 as index, indicate further that off the - string by setting character to nil and the extent to 0." - lastIndex := lastIndex + 1. - lastCharacter := nil. - self lastCharacterExtentSetX: 0. - ^true]. - - "Scanning for a point and either off the end of the line or off the end of the string." - runStopIndex = text size - ifTrue: ["off end of string" - lastIndex := lastIndex + 1. - lastCharacter := nil. - self lastCharacterExtentSetX: 0. - ^true]. - "just off end of line without crossing x" - lastIndex := lastIndex + 1. - ^true!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>indentationLevel: (in category 'scanning') ----- - indentationLevel: anInteger - super indentationLevel: anInteger. - nextLeftMargin := leftMargin. - indentationLevel timesRepeat: [ - nextLeftMargin := textStyle nextTabXFrom: nextLeftMargin - leftMargin: leftMargin - rightMargin: rightMargin]!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>lastCharacterExtentSetX: (in category 'private') ----- - lastCharacterExtentSetX: xVal - lastCharacterExtent := xVal @ lastCharacterExtent y!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>lastSpaceOrTabExtentSetX: (in category 'private') ----- - lastSpaceOrTabExtentSetX: xVal - lastSpaceOrTabExtent := xVal @ lastSpaceOrTabExtent y!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>paddedSpace (in category 'stop conditions') ----- - paddedSpace - "When the line is justified, the spaces will not be the same as the font's - space character. A padding of extra space must be considered in trying - to find which character the cursor is pointing at. Answer whether the - scanning has crossed the cursor." - - | pad | - pad := 0. - spaceCount := spaceCount + 1. - pad := line justifiedPadFor: spaceCount. - lastSpaceOrTabExtent := lastCharacterExtent copy. - self lastSpaceOrTabExtentSetX: spaceWidth + pad. - (destX + lastSpaceOrTabExtent x) >= characterPoint x - ifTrue: [lastCharacterExtent := lastSpaceOrTabExtent copy. - ^self crossedX]. - lastIndex := lastIndex + 1. - destX := destX + lastSpaceOrTabExtent x. - ^ false - !
Item was removed: - ----- Method: MultiCharacterBlockScanner>>placeEmbeddedObject: (in category 'scanning') ----- - placeEmbeddedObject: anchoredMorph - "Workaround: The following should really use #textAnchorType" - anchoredMorph relativeTextAnchorPosition ifNotNil:[^true]. - (super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false]. - specialWidth := anchoredMorph width. - ^ true!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:stopConditions:kern: (in category 'scanning') ----- - scanMultiCharactersCombiningFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - - | encoding f nextDestX maxAscii startEncoding char charValue | - lastIndex := startIndex. - lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at: EndOfRun]. - startEncoding := (sourceString at: startIndex) leadingChar. - font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at: 1]. - ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet]) ifTrue: [ - [f := font fontArray at: startEncoding + 1] - on: Exception do: [:ex | f := font fontArray at: 1]. - f ifNil: [ f := font fontArray at: 1]. - maxAscii := f maxAscii. - spaceWidth := f widthOf: Space. - ] ifFalse: [ - maxAscii := font maxAscii. - ]. - - [lastIndex <= stopIndex] whileTrue: [ - encoding := (sourceString at: lastIndex) leadingChar. - encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stops at: EndOfRun]. - char := (sourceString at: lastIndex). - charValue := char charCode. - charValue > maxAscii ifTrue: [charValue := maxAscii]. - (encoding = 0 and: [(stopConditions at: charValue + 1) ~~ nil]) ifTrue: [ - ^ stops at: charValue + 1 - ]. - nextDestX := destX + (self widthOf: char inFont: font). - nextDestX > rightX ifTrue: [^ stops at: CrossedX]. - destX := nextDestX + kernDelta. - lastIndex := lastIndex + 1. - ]. - lastIndex := stopIndex. - ^ stops at: EndOfRun!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>setFont (in category 'stop conditions') ----- - setFont - specialWidth := nil. - super setFont!
Item was removed: - ----- Method: MultiCharacterBlockScanner>>setStopConditions (in category 'stop conditions') ----- - setStopConditions - "Set the font and the stop conditions for the current run." - - self setFont. - self setConditionArray: (alignment = Justified ifTrue: [#paddedSpace]). - !
Item was removed: - ----- Method: MultiCharacterBlockScanner>>tab (in category 'stop conditions') ----- - tab - | currentX | - currentX := (alignment == Justified and: [self leadingTab not]) - ifTrue: "imbedded tabs in justified text are weird" - [destX + (textStyle tabWidth - (line justifiedTabDeltaFor: spaceCount)) max: destX] - ifFalse: - [textStyle - nextTabXFrom: destX - leftMargin: leftMargin - rightMargin: rightMargin]. - lastSpaceOrTabExtent := lastCharacterExtent copy. - self lastSpaceOrTabExtentSetX: (currentX - destX max: 0). - currentX >= characterPoint x - ifTrue: - [lastCharacterExtent := lastSpaceOrTabExtent copy. - ^ self crossedX]. - destX := currentX. - lastIndex := lastIndex + 1. - ^false!
Item was removed: - Object subclass: #MultiCharacterScanner - instanceVariableNames: 'destX lastIndex xTable destY stopConditions text textStyle alignment leftMargin rightMargin font line runStopIndex spaceCount spaceWidth emphasisCode kern indentationLevel wantsColumnBreaks presentation presentationLine numOfComposition baselineY firstDestX' - classVariableNames: 'DefaultStopConditions NilCondition PaddedSpaceCondition SpaceCondition' - poolDictionaries: 'TextConstants' - category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed: - ----- Method: MultiCharacterScanner class>>initialize (in category 'class initialization') ----- - initialize - " - MultiCharacterScanner initialize - " - | a | - a := Array new: 258. - a at: 1 + 1 put: #embeddedObject. - a at: Tab asciiValue + 1 put: #tab. - a at: CR asciiValue + 1 put: #cr. - a at: EndOfRun put: #endOfRun. - a at: CrossedX put: #crossedX. - NilCondition := a copy. - DefaultStopConditions := a copy. - - PaddedSpaceCondition := a copy. - PaddedSpaceCondition at: Space asciiValue + 1 put: #paddedSpace. - - SpaceCondition := a copy. - SpaceCondition at: Space asciiValue + 1 put: #space. - !
Item was removed: - ----- Method: MultiCharacterScanner>>addCharToPresentation: (in category 'multilingual scanning') ----- - addCharToPresentation: char - - !
Item was removed: - ----- Method: MultiCharacterScanner>>addEmphasis: (in category 'private') ----- - addEmphasis: code - "Set the bold-ital-under-strike emphasis." - emphasisCode := emphasisCode bitOr: code!
Item was removed: - ----- Method: MultiCharacterScanner>>addKern: (in category 'private') ----- - addKern: kernDelta - "Set the current kern amount." - kern := kern + kernDelta!
Item was removed: - ----- Method: MultiCharacterScanner>>basicScanCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanning') ----- - basicScanCharactersFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - "Primitive. This is the inner loop of text display--but see - scanCharactersFrom: to:rightX: which would get the string, - stopConditions and displaying from the instance. March through source - String from startIndex to stopIndex. If any character is flagged with a - non-nil entry in stops, then return the corresponding value. Determine - width of each character from xTable, indexed by map. - If dextX would exceed rightX, then return stops at: 258. - Advance destX by the width of the character. If stopIndex has been - reached, then return stops at: 257. Optional. - See Object documentation whatIsAPrimitive." - | ascii nextDestX char | - <primitive: 103> - lastIndex := startIndex. - [lastIndex <= stopIndex] - whileTrue: - [char := (sourceString at: lastIndex). - ascii := char asciiValue + 1. - (stops at: ascii) == nil ifFalse: [^stops at: ascii]. - "Note: The following is querying the font about the width - since the primitive may have failed due to a non-trivial - mapping of characters to glyphs or a non-existing xTable." - nextDestX := destX + (font widthOf: char). - nextDestX > rightX ifTrue: [^stops at: CrossedX]. - destX := nextDestX + kernDelta. - lastIndex := lastIndex + 1]. - lastIndex := stopIndex. - ^stops at: EndOfRun!
Item was removed: - ----- Method: MultiCharacterScanner>>columnBreak (in category 'scanning') ----- - columnBreak - - ^true!
Item was removed: - ----- Method: MultiCharacterScanner>>combinableChar:for: (in category 'scanner methods') ----- - combinableChar: char for: prevEntity - - !
Item was removed: - ----- Method: MultiCharacterScanner>>embeddedObject (in category 'scanning') ----- - embeddedObject - | savedIndex | - savedIndex := lastIndex. - text attributesAt: lastIndex do:[:attr| - attr anchoredMorph ifNotNil:[ - "Following may look strange but logic gets reversed. - If the morph fits on this line we're not done (return false for true) - and if the morph won't fit we're done (return true for false)" - (self placeEmbeddedObject: attr anchoredMorph) ifFalse:[^true]]]. - lastIndex := savedIndex + 1. "for multiple(!!) embedded morphs" - ^false!
Item was removed: - ----- Method: MultiCharacterScanner>>handleIndentation (in category 'scanning') ----- - handleIndentation - self indentationLevel timesRepeat: [ - self plainTab]!
Item was removed: - ----- Method: MultiCharacterScanner>>indentationLevel (in category 'scanning') ----- - indentationLevel - "return the number of tabs that are currently being placed at the beginning of each line" - ^indentationLevel ifNil:[0]!
Item was removed: - ----- Method: MultiCharacterScanner>>indentationLevel: (in category 'scanning') ----- - indentationLevel: anInteger - "set the number of tabs to put at the beginning of each line" - indentationLevel := anInteger!
Item was removed: - ----- Method: MultiCharacterScanner>>initialize (in category 'initialize') ----- - initialize - destX := destY := leftMargin := 0.!
Item was removed: - ----- Method: MultiCharacterScanner>>initializeFromParagraph:clippedBy: (in category 'private') ----- - initializeFromParagraph: aParagraph clippedBy: clippingRectangle - - text := aParagraph text. - textStyle := aParagraph textStyle. - !
Item was removed: - ----- Method: MultiCharacterScanner>>initializeStringMeasurer (in category 'initialize') ----- - initializeStringMeasurer - stopConditions := Array new: 258. - stopConditions at: CrossedX put: #crossedX. - stopConditions at: EndOfRun put: #endOfRun. - !
Item was removed: - ----- Method: MultiCharacterScanner>>isBreakableAt:in:in: (in category 'scanner methods') ----- - isBreakableAt: index in: sourceString in: encodingClass - - ^ encodingClass isBreakableAt: index in: sourceString. - !
Item was removed: - ----- Method: MultiCharacterScanner>>leadingTab (in category 'scanning') ----- - leadingTab - "return true if only tabs lie to the left" - line first to: lastIndex do: - [:i | (text at: i) == Tab ifFalse: [^ false]]. - ^ true!
Item was removed: - ----- Method: MultiCharacterScanner>>measureString:inFont:from:to: (in category 'scanning') ----- - measureString: aString inFont: aFont from: startIndex to: stopIndex - "WARNING: In order to use this method the receiver has to be set up using #initializeStringMeasurer" - destX := destY := lastIndex := 0. - baselineY := aFont ascent. - xTable := aFont xTable. - font := aFont. " added Dec 03, 2004 " - " map := aFont characterToGlyphMap." - self scanCharactersFrom: startIndex to: stopIndex in: aString rightX: 999999 stopConditions: stopConditions kern: 0. - ^destX!
Item was removed: - ----- Method: MultiCharacterScanner>>placeEmbeddedObject: (in category 'scanning') ----- - placeEmbeddedObject: anchoredMorph - "Place the anchoredMorph or return false if it cannot be placed. - In any event, advance destX by its width." - | w | - "Workaround: The following should really use #textAnchorType" - anchoredMorph relativeTextAnchorPosition ifNotNil:[^true]. - destX := destX + (w := anchoredMorph width). - (destX > rightMargin and: [(leftMargin + w) <= rightMargin]) - ifTrue: ["Won't fit, but would on next line" - ^ false]. - lastIndex := lastIndex + 1. - self setFont. "Force recalculation of emphasis for next run" - ^ true!
Item was removed: - ----- Method: MultiCharacterScanner>>plainTab (in category 'scanning') ----- - plainTab - "This is the basic method of adjusting destX for a tab." - destX := (alignment == Justified and: [self leadingTab not]) - ifTrue: "embedded tabs in justified text are weird" - [destX + (textStyle tabWidth - (line justifiedTabDeltaFor: spaceCount)) max: destX] - ifFalse: - [textStyle nextTabXFrom: destX - leftMargin: leftMargin - rightMargin: rightMargin]!
Item was removed: - ----- Method: MultiCharacterScanner>>registerBreakableIndex (in category 'multilingual scanning') ----- - registerBreakableIndex - - "Record left x and character index of the line-wrappable point. - The default implementation here does nothing." - - ^ false. - !
Item was removed: - ----- Method: MultiCharacterScanner>>removeLastCharFromPresentation (in category 'multilingual scanning') ----- - removeLastCharFromPresentation - !
Item was removed: - ----- Method: MultiCharacterScanner>>scanCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanning') ----- - scanCharactersFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - - | startEncoding selector | - (sourceString isByteString) ifTrue: [^ self basicScanCharactersFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta.]. - - (sourceString isWideString) ifTrue: [ - startIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at: EndOfRun]. - startEncoding := (sourceString at: startIndex) leadingChar. - selector := EncodedCharSet scanSelectorAt: startEncoding. - ^ self perform: selector withArguments: (Array with: startIndex with: stopIndex with: sourceString with: rightX with: stopConditions with: kernDelta). - ]. - - ^ stops at: EndOfRun - !
Item was removed: - ----- Method: MultiCharacterScanner>>scanJapaneseCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanner methods') ----- - scanJapaneseCharactersFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - - | ascii encoding f nextDestX maxAscii startEncoding | - lastIndex := startIndex. - lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at: EndOfRun]. - startEncoding := (sourceString at: startIndex) leadingChar. - font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at: 1]. - ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet]) ifTrue: [ - [f := font fontArray at: startEncoding + 1] - on: Exception do: [:ex | f := font fontArray at: 1]. - f ifNil: [ f := font fontArray at: 1]. - maxAscii := f maxAscii. - "xTable := f xTable. - maxAscii := xTable size - 2." - spaceWidth := f widthOf: Space. - ] ifFalse: [ - (font isMemberOf: HostFont) ifTrue: [ - f := font. - maxAscii := f maxAscii. - spaceWidth := f widthOf: Space. - ] ifFalse: [ - maxAscii := font maxAscii. - ]. - ]. - [lastIndex <= stopIndex] whileTrue: [ - "self halt." - encoding := (sourceString at: lastIndex) leadingChar. - encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stops at: EndOfRun]. - ascii := (sourceString at: lastIndex) charCode. - ascii > maxAscii ifTrue: [ascii := maxAscii]. - (encoding = 0 and: [(stopConditions at: ascii + 1) ~~ nil]) ifTrue: [^ stops at: ascii + 1]. - (self isBreakableAt: lastIndex in: sourceString in: (EncodedCharSet charsetAt: encoding)) ifTrue: [ - self registerBreakableIndex. - ]. - nextDestX := destX + (font widthOf: (sourceString at: lastIndex)). - nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue: [^ stops at: CrossedX]]. - destX := nextDestX + kernDelta. - lastIndex := lastIndex + 1. - ]. - lastIndex := stopIndex. - ^ stops at: EndOfRun!
Item was removed: - ----- Method: MultiCharacterScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:stopConditions:kern: (in category 'scanner methods') ----- - scanMultiCharactersCombiningFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - - | charCode encoding f maxAscii startEncoding combining combined combiningIndex c | - lastIndex := startIndex. - lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at: EndOfRun]. - startEncoding := (sourceString at: startIndex) leadingChar. - font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at: 1]. - ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet]) ifTrue: [ - [f := font fontArray at: startEncoding + 1] - on: Exception do: [:ex | f := font fontArray at: 1]. - f ifNil: [ f := font fontArray at: 1]. - maxAscii := f maxAscii. - spaceWidth := font widthOf: Space. - ] ifFalse: [ - maxAscii := font maxAscii. - spaceWidth := font widthOf: Space. - ]. - - combining := nil. - [lastIndex <= stopIndex] whileTrue: [ - charCode := (sourceString at: lastIndex) charCode. - c := (sourceString at: lastIndex). - combining ifNil: [ - combining := CombinedChar new. - combining add: c. - combiningIndex := lastIndex. - lastIndex := lastIndex + 1. - ] ifNotNil: [ - (combining add: c) ifFalse: [ - self addCharToPresentation: (combined := combining combined). - combining := CombinedChar new. - combining add: c. - charCode := combined charCode. - encoding := combined leadingChar. - encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. - (encoding = 0 and: [(stopConditions at: charCode + 1) ~~ nil]) ifTrue: [ - ^ stops at: charCode + 1 - ] ifFalse: [ - ^ stops at: EndOfRun - ]. - ]. - charCode > maxAscii ifTrue: [charCode := maxAscii]. - "" - (encoding = 0 and: [(stopConditions at: charCode + 1) ~~ nil]) ifTrue: [ - combining ifNotNil: [ - self addCharToPresentation: (combining combined). - ]. - ^ stops at: charCode + 1 - ]. - (self isBreakableAt: lastIndex in: sourceString in: Latin1Environment) ifTrue: [ - self registerBreakableIndex. - ]. - destX > rightX ifTrue: [ - destX ~= firstDestX ifTrue: [ - lastIndex := combiningIndex. - self removeLastCharFromPresentation. - ^ stops at: CrossedX]]. - combiningIndex := lastIndex. - lastIndex := lastIndex + 1. - ] ifTrue: [ - lastIndex := lastIndex + 1. - numOfComposition := numOfComposition + 1. - ]. - ]. - ]. - lastIndex := stopIndex. - combining ifNotNil: [ - combined := combining combined. - self addCharToPresentation: combined. - "assuming that there is always enough space for at least one character". - destX := destX + (self widthOf: combined inFont: font). - ]. - ^ stops at: EndOfRun!
Item was removed: - ----- Method: MultiCharacterScanner>>scanMultiCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanning') ----- - scanMultiCharactersFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - - | ascii encoding f nextDestX maxAscii startEncoding | - lastIndex := startIndex. - lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at: EndOfRun]. - startEncoding := (sourceString at: startIndex) leadingChar. - font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at: 1]. - ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet]) ifTrue: [ - [f := font fontArray at: startEncoding + 1] - on: Exception do: [:ex | f := font fontArray at: 1]. - f ifNil: [ f := font fontArray at: 1]. - maxAscii := f maxAscii. - spaceWidth := f widthOf: Space. - ] ifFalse: [ - maxAscii := font maxAscii. - ]. - - [lastIndex <= stopIndex] whileTrue: [ - encoding := (sourceString at: lastIndex) leadingChar. - encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stops at: EndOfRun]. - ascii := (sourceString at: lastIndex) charCode. - ascii > maxAscii ifTrue: [ascii := maxAscii]. - (encoding = 0 and: [ascii < stopConditions size and: [(stopConditions at: ascii + 1) ~~ nil]]) ifTrue: [^ stops at: ascii + 1]. - (self isBreakableAt: lastIndex in: sourceString in: Latin1Environment) ifTrue: [ - self registerBreakableIndex. - ]. - nextDestX := destX + (font widthOf: (sourceString at: lastIndex)). - nextDestX > rightX ifTrue: [destX ~= firstDestX ifTrue: [^ stops at: CrossedX]]. - destX := nextDestX + kernDelta. - lastIndex := lastIndex + 1. - ]. - lastIndex := stopIndex. - ^ stops at: EndOfRun!
Item was removed: - ----- Method: MultiCharacterScanner>>scanMultiCharactersR2LFrom:to:in:rightX:stopConditions:kern: (in category 'scanner methods') ----- - scanMultiCharactersR2LFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - - "Note that 'rightX' really means 'endX' in R2L context. Ie. rightX is usually smaller than destX." - | ascii encoding f nextDestX maxAscii startEncoding | - lastIndex := startIndex. - lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at: EndOfRun]. - startEncoding := (sourceString at: startIndex) leadingChar. - font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at: 1]. - ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet]) ifTrue: [ - [f := font fontArray at: startEncoding + 1] - on: Exception do: [:ex | f := font fontArray at: 1]. - f ifNil: [ f := font fontArray at: 1]. - maxAscii := f maxAscii. - spaceWidth := f widthOf: Space. - ] ifFalse: [ - maxAscii := font maxAscii. - ]. - - [lastIndex <= stopIndex] whileTrue: [ - encoding := (sourceString at: lastIndex) leadingChar. - encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stops at: EndOfRun]. - ascii := (sourceString at: lastIndex) charCode. - ascii > maxAscii ifTrue: [ascii := maxAscii]. - (encoding = 0 and: [(stopConditions at: ascii + 1) ~~ nil]) ifTrue: [^ stops at: ascii + 1]. - (self isBreakableAt: lastIndex in: sourceString in: Latin1Environment) ifTrue: [ - self registerBreakableIndex. - ]. - nextDestX := destX - (font widthOf: (sourceString at: lastIndex)). - nextDestX < rightX ifTrue: [^ stops at: CrossedX]. - destX := nextDestX - kernDelta. - lastIndex := lastIndex + 1. - ]. - lastIndex := stopIndex. - ^ stops at: EndOfRun!
Item was removed: - ----- Method: MultiCharacterScanner>>scanSimChineseCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanner methods') ----- - scanSimChineseCharactersFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - - | ascii encoding f nextDestX maxAscii startEncoding | - lastIndex := startIndex. - lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at: EndOfRun]. - startEncoding := (sourceString at: startIndex) leadingChar. - font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at: 1]. - ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet]) ifTrue: [ - [f := font fontArray at: startEncoding + 1] - on: Exception do: [:ex | f := font fontArray at: 1]. - f ifNil: [ f := font fontArray at: 1]. - maxAscii := f maxAscii. - "xTable := f xTable. - maxAscii := xTable size - 2." - spaceWidth := f widthOf: Space. - ] ifFalse: [ - (font isMemberOf: HostFont) ifTrue: [ - f := font. - maxAscii := f maxAscii. - spaceWidth := f widthOf: Space. - ] ifFalse: [ - maxAscii := font maxAscii. - ]. - ]. - [lastIndex <= stopIndex] whileTrue: [ - "self halt." - encoding := (sourceString at: lastIndex) leadingChar. - encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stops at: EndOfRun]. - ascii := (sourceString at: lastIndex) charCode. - ascii > maxAscii ifTrue: [ascii := maxAscii]. - (encoding = 0 and: [(stopConditions at: ascii + 1) ~~ nil]) ifTrue: [^ stops at: ascii + 1]. - (self isBreakableAt: lastIndex in: sourceString in: (EncodedCharSet charsetAt: encoding)) ifTrue: [ - self registerBreakableIndex. - ]. - nextDestX := destX + (font widthOf: (sourceString at: lastIndex)). - nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue: [^ stops at: CrossedX]]. - destX := nextDestX + kernDelta. - lastIndex := lastIndex + 1. - ]. - lastIndex := stopIndex. - ^ stops at: EndOfRun!
Item was removed: - ----- Method: MultiCharacterScanner>>setActualFont: (in category 'private') ----- - setActualFont: aFont - "Set the basal font to an isolated font reference." - - font := aFont!
Item was removed: - ----- Method: MultiCharacterScanner>>setAlignment: (in category 'private') ----- - setAlignment: style - alignment := style. - !
Item was removed: - ----- Method: MultiCharacterScanner>>setConditionArray: (in category 'private') ----- - setConditionArray: aSymbol - - aSymbol == #paddedSpace ifTrue: [^stopConditions := PaddedSpaceCondition "copy"]. - "aSymbol == #space ifTrue: [^stopConditions := SpaceCondition copy]." - aSymbol == nil ifTrue: [^stopConditions := NilCondition "copy"]. - self error: 'undefined stopcondition for space character'. - !
Item was removed: - ----- Method: MultiCharacterScanner>>setFont (in category 'private') ----- - setFont - | priorFont | - "Set the font and other emphasis." - priorFont := font. - text == nil ifFalse:[ - emphasisCode := 0. - kern := 0. - indentationLevel := 0. - alignment := textStyle alignment. - font := nil. - (text attributesAt: lastIndex forStyle: textStyle) - do: [:att | att emphasizeScanner: self]]. - font == nil ifTrue: - [self setFont: textStyle defaultFontIndex]. - font := font emphasized: emphasisCode. - priorFont ifNotNil: [destX := destX + priorFont descentKern]. - destX := destX - font descentKern. - "NOTE: next statement should be removed when clipping works" - leftMargin ifNotNil: [destX := destX max: leftMargin]. - kern := kern - font baseKern. - - "Install various parameters from the font." - spaceWidth := font widthOf: Space. - xTable := font xTable. - " map := font characterToGlyphMap." - stopConditions := DefaultStopConditions.!
Item was removed: - ----- Method: MultiCharacterScanner>>setFont: (in category 'private') ----- - setFont: fontNumber - "Set the font by number from the textStyle." - - self setActualFont: (textStyle fontAt: fontNumber)!
Item was removed: - ----- Method: MultiCharacterScanner>>text:textStyle: (in category 'private') ----- - text: t textStyle: ts - text := t. - textStyle := ts!
Item was removed: - ----- Method: MultiCharacterScanner>>textColor: (in category 'private') ----- - textColor: ignored - "Overridden in DisplayScanner"!
Item was removed: - ----- Method: MultiCharacterScanner>>wantsColumnBreaks: (in category 'initialize') ----- - wantsColumnBreaks: aBoolean - - wantsColumnBreaks := aBoolean!
Item was removed: - ----- Method: MultiCharacterScanner>>widthOf:inFont: (in category 'multilingual scanning') ----- - widthOf: char inFont: aFont - - (char isMemberOf: CombinedChar) ifTrue: [ - ^ aFont widthOf: char base. - ] ifFalse: [ - ^ aFont widthOf: char. - ]. - - - !
Item was removed: - MultiCharacterScanner subclass: #MultiCompositionScanner - instanceVariableNames: 'spaceX lineHeight baseline breakableIndex lineHeightAtBreak baselineAtBreak breakAtSpace lastWidth' - classVariableNames: '' - poolDictionaries: '' - category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed: - ----- Method: MultiCompositionScanner>>addCharToPresentation: (in category 'multilingual scanning') ----- - addCharToPresentation: char - - presentation nextPut: char. - lastWidth := self widthOf: char inFont: font. - destX := destX + lastWidth. - !
Item was removed: - ----- Method: MultiCompositionScanner>>columnBreak (in category 'stop conditions') ----- - columnBreak - - "Answer true. Set up values for the text line interval currently being - composed." - - line stop: lastIndex. - presentationLine stop: lastIndex - numOfComposition. - spaceX := destX. - line paddingWidth: rightMargin - spaceX. - presentationLine paddingWidth: rightMargin - spaceX. - ^true!
Item was removed: - ----- Method: MultiCompositionScanner>>composeFrom:inRectangle:firstLine:leftSide:rightSide: (in category 'scanning') ----- - composeFrom: startIndex inRectangle: lineRectangle - firstLine: firstLine leftSide: leftSide rightSide: rightSide - "Answer an instance of TextLineInterval that represents the next line in the paragraph." - | runLength done stopCondition | - "Set up margins" - leftMargin := lineRectangle left. - leftSide ifTrue: [leftMargin := leftMargin + - (firstLine ifTrue: [textStyle firstIndent] - ifFalse: [textStyle restIndent])]. - destX := spaceX := leftMargin. - firstDestX := destX. - rightMargin := lineRectangle right. - rightSide ifTrue: [rightMargin := rightMargin - textStyle rightIndent]. - lastIndex := startIndex. "scanning sets last index" - destY := lineRectangle top. - lineHeight := baseline := 0. "Will be increased by setFont" - self setStopConditions. "also sets font" - runLength := text runLengthFor: startIndex. - runStopIndex := (lastIndex := startIndex) + (runLength - 1). - line := (TextLine start: lastIndex stop: 0 internalSpaces: 0 paddingWidth: 0) - rectangle: lineRectangle. - presentationLine := (TextLine start: lastIndex stop: 0 internalSpaces: 0 paddingWidth: 0) - rectangle: lineRectangle. - numOfComposition := 0. - spaceCount := 0. - self handleIndentation. - leftMargin := destX. - line leftMargin: leftMargin. - presentationLine leftMargin: leftMargin. - - presentation := TextStream on: (Text fromString: (WideString new: text size)). - - done := false. - [done] - whileFalse: - [stopCondition := self scanCharactersFrom: lastIndex to: runStopIndex - in: text string rightX: rightMargin stopConditions: stopConditions - kern: kern. - "See setStopConditions for stopping conditions for composing." - (self perform: stopCondition) - ifTrue: [presentationLine lineHeight: lineHeight + textStyle leading - baseline: baseline + textStyle leading. - ^ line lineHeight: lineHeight + textStyle leading - baseline: baseline + textStyle leading]]!
Item was removed: - ----- Method: MultiCompositionScanner>>composeLine:fromCharacterIndex:inParagraph: (in category 'scanning') ----- - composeLine: lineIndex fromCharacterIndex: startIndex inParagraph: aParagraph - "Answer an instance of TextLineInterval that represents the next line in the paragraph." - | runLength done stopCondition | - destX := spaceX := leftMargin := aParagraph leftMarginForCompositionForLine: lineIndex. - destY := 0. - rightMargin := aParagraph rightMarginForComposition. - leftMargin >= rightMargin ifTrue: [self error: 'No room between margins to compose']. - lastIndex := startIndex. "scanning sets last index" - lineHeight := textStyle lineGrid. "may be increased by setFont:..." - baseline := textStyle baseline. - baselineY := destY + baseline. - self setStopConditions. "also sets font" - self handleIndentation. - runLength := text runLengthFor: startIndex. - runStopIndex := (lastIndex := startIndex) + (runLength - 1). - line := TextLineInterval - start: lastIndex - stop: 0 - internalSpaces: 0 - paddingWidth: 0. - presentationLine := TextLineInterval - start: lastIndex - stop: 0 - internalSpaces: 0 - paddingWidth: 0. - numOfComposition := 0. - presentation := TextStream on: (Text fromString: (WideString new: text size)). - spaceCount := 0. - done := false. - [done] - whileFalse: - [stopCondition := self scanCharactersFrom: lastIndex to: runStopIndex - in: text string rightX: rightMargin stopConditions: stopConditions - kern: kern. - "See setStopConditions for stopping conditions for composing." - (self perform: stopCondition) - ifTrue: [presentationLine lineHeight: lineHeight + textStyle leading - baseline: baseline + textStyle leading. - ^line lineHeight: lineHeight + textStyle leading - baseline: baseline + textStyle leading]]!
Item was removed: - ----- Method: MultiCompositionScanner>>cr (in category 'stop conditions') ----- - cr - "Answer true. Set up values for the text line interval currently being - composed." - - line stop: lastIndex. - presentationLine stop: lastIndex - numOfComposition. - spaceX := destX. - line paddingWidth: rightMargin - spaceX. - presentationLine paddingWidth: rightMargin - spaceX. - ^true!
Item was removed: - ----- Method: MultiCompositionScanner>>crossedX (in category 'stop conditions') ----- - crossedX - "There is a word that has fallen across the right edge of the composition - rectangle. This signals the need for wrapping which is done to the last - space that was encountered, as recorded by the space stop condition." - - (breakAtSpace) ifTrue: [ - spaceCount >= 1 ifTrue: - ["The common case. First back off to the space at which we wrap." - line stop: breakableIndex. - presentationLine stop: breakableIndex - numOfComposition. - lineHeight := lineHeightAtBreak. - baseline := baselineAtBreak. - spaceCount := spaceCount - 1. - breakableIndex := breakableIndex - 1. - - "Check to see if any spaces preceding the one at which we wrap. - Double space after punctuation, most likely." - [(spaceCount > 1 and: [(text at: breakableIndex) = Space])] - whileTrue: - [spaceCount := spaceCount - 1. - "Account for backing over a run which might - change width of space." - font := text fontAt: breakableIndex withStyle: textStyle. - breakableIndex := breakableIndex - 1. - spaceX := spaceX - (font widthOf: Space)]. - line paddingWidth: rightMargin - spaceX. - presentationLine paddingWidth: rightMargin - spaceX. - presentationLine internalSpaces: spaceCount. - line internalSpaces: spaceCount] - ifFalse: - ["Neither internal nor trailing spaces -- almost never happens." - lastIndex := lastIndex - 1. - [destX <= rightMargin] - whileFalse: - [destX := destX - (font widthOf: (text at: lastIndex)). - lastIndex := lastIndex - 1]. - spaceX := destX. - line paddingWidth: rightMargin - destX. - presentationLine paddingWidth: rightMargin - destX. - presentationLine stop: (lastIndex max: line first). - line stop: (lastIndex max: line first)]. - ^true - ]. - - (breakableIndex isNil or: [breakableIndex < line first]) ifTrue: [ - "Any breakable point in this line. Just wrap last character." - breakableIndex := lastIndex - 1. - lineHeightAtBreak := lineHeight. - baselineAtBreak := baseline. - ]. - - "It wasn't a space, but anyway this is where we break the line." - line stop: breakableIndex. - presentationLine stop: breakableIndex. - lineHeight := lineHeightAtBreak. - baseline := baselineAtBreak. - ^ true. - !
Item was removed: - ----- Method: MultiCompositionScanner>>endOfRun (in category 'stop conditions') ----- - endOfRun - "Answer true if scanning has reached the end of the paragraph. - Otherwise step conditions (mostly install potential new font) and answer - false." - - | runLength | - lastIndex = text size - ifTrue: [line stop: lastIndex. - presentationLine stop: lastIndex - numOfComposition. - spaceX := destX. - line paddingWidth: rightMargin - destX. - presentationLine paddingWidth: rightMargin - destX. - ^true] - ifFalse: [ - "(text at: lastIndex) charCode = 32 ifTrue: [destX := destX + spaceWidth]." - runLength := (text runLengthFor: (lastIndex := lastIndex + 1)). - runStopIndex := lastIndex + (runLength - 1). - self setStopConditions. - ^false] - !
Item was removed: - ----- Method: MultiCompositionScanner>>forParagraph: (in category 'intialize-release') ----- - forParagraph: aParagraph - "Initialize the receiver for scanning the given paragraph." - - self - initializeFromParagraph: aParagraph - clippedBy: aParagraph clippingRectangle. - !
Item was removed: - ----- Method: MultiCompositionScanner>>getPresentation (in category 'multilingual scanning') ----- - getPresentation - - ^ presentation contents. - - !
Item was removed: - ----- Method: MultiCompositionScanner>>getPresentationLine (in category 'multilingual scanning') ----- - getPresentationLine - - ^ presentationLine. - !
Item was removed: - ----- Method: MultiCompositionScanner>>isBreakableAt:in:in: (in category 'multilingual scanning') ----- - isBreakableAt: index in: sourceString in: encodingClass - - ^ encodingClass isBreakableAt: index in: sourceString. - !
Item was removed: - ----- Method: MultiCompositionScanner>>placeEmbeddedObject: (in category 'stop conditions') ----- - placeEmbeddedObject: anchoredMorph - | descent | - "Workaround: The following should really use #textAnchorType" - anchoredMorph relativeTextAnchorPosition ifNotNil:[^true]. - (super placeEmbeddedObject: anchoredMorph) ifFalse: ["It doesn't fit" - "But if it's the first character then leave it here" - lastIndex < line first ifFalse:[ - line stop: lastIndex-1. - ^ false]]. - descent := lineHeight - baseline. - lineHeight := lineHeight max: anchoredMorph height. - baseline := lineHeight - descent. - line stop: lastIndex. - presentationLine stop: lastIndex - numOfComposition. - ^ true!
Item was removed: - ----- Method: MultiCompositionScanner>>presentation (in category 'accessing') ----- - presentation - - ^ presentation. - !
Item was removed: - ----- Method: MultiCompositionScanner>>presentationLine (in category 'accessing') ----- - presentationLine - - ^ presentationLine. - !
Item was removed: - ----- Method: MultiCompositionScanner>>registerBreakableIndex (in category 'multilingual scanning') ----- - registerBreakableIndex - - "Record left x and character index of the line-wrappable point. - Used for wrap-around. Answer whether the character has crossed the - right edge of the composition rectangle of the paragraph." - - (text at: lastIndex) = Character space ifTrue: [ - breakAtSpace := true. - spaceX := destX. - spaceCount := spaceCount + 1. - lineHeightAtBreak := lineHeight. - baselineAtBreak := baseline. - breakableIndex := lastIndex. - destX > rightMargin ifTrue: [^self crossedX]. - ] ifFalse: [ - breakAtSpace := false. - lineHeightAtBreak := lineHeight. - baselineAtBreak := baseline. - breakableIndex := lastIndex - 1. - ]. - ^ false. - !
Item was removed: - ----- Method: MultiCompositionScanner>>removeLastCharFromPresentation (in category 'multilingual scanning') ----- - removeLastCharFromPresentation - - presentation ifNotNil: [ - presentation position: presentation position - 1. - ]. - destX := destX - lastWidth. - !
Item was removed: - ----- Method: MultiCompositionScanner>>rightX (in category 'accessing') ----- - rightX - "Meaningful only when a line has just been composed -- refers to the - line most recently composed. This is a subtrefuge to allow for easy - resizing of a composition rectangle to the width of the maximum line. - Useful only when there is only one line in the form or when each line - is terminated by a carriage return. Handy for sizing menus and lists." - - breakAtSpace ifTrue: [^ spaceX]. - - ^ destX. - !
Item was removed: - ----- Method: MultiCompositionScanner>>setActualFont: (in category 'scanning') ----- - setActualFont: aFont - "Keep track of max height and ascent for auto lineheight" - | descent | - super setActualFont: aFont. - "' ', lastIndex printString, ' ' displayAt: (lastIndex * 15)@0." - lineHeight == nil - ifTrue: [descent := font descent. - baseline := font ascent. - lineHeight := baseline + descent] - ifFalse: [descent := lineHeight - baseline max: font descent. - baseline := baseline max: font ascent. - lineHeight := lineHeight max: baseline + descent]!
Item was removed: - ----- Method: MultiCompositionScanner>>setFont (in category 'stop conditions') ----- - setFont - super setFont. - breakAtSpace := false. - wantsColumnBreaks == true ifTrue: [ - stopConditions := stopConditions copy. - stopConditions at: TextComposer characterForColumnBreak asciiValue + 1 put: #columnBreak. - ]. - !
Item was removed: - ----- Method: MultiCompositionScanner>>setStopConditions (in category 'stop conditions') ----- - setStopConditions - "Set the font and the stop conditions for the current run." - - self setFont!
Item was removed: - ----- Method: MultiCompositionScanner>>tab (in category 'stop conditions') ----- - tab - "Advance destination x according to tab settings in the paragraph's - textStyle. Answer whether the character has crossed the right edge of - the composition rectangle of the paragraph." - - destX := textStyle - nextTabXFrom: destX leftMargin: leftMargin rightMargin: rightMargin. - destX > rightMargin ifTrue: [^self crossedX]. - lastIndex := lastIndex + 1. - ^false - !
Item was removed: - MultiCharacterScanner subclass: #MultiDisplayScanner - instanceVariableNames: 'bitBlt lineY runX foregroundColor backgroundColor fillBlt lineHeight paragraph paragraphColor morphicOffset ignoreColorChanges' - classVariableNames: '' - poolDictionaries: '' - category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed: - ----- Method: MultiDisplayScanner class>>defaultFont (in category 'queries') ----- - defaultFont - ^ TextStyle defaultFont!
Item was removed: - ----- Method: MultiDisplayScanner>>cr (in category 'stop conditions') ----- - cr - "When a carriage return is encountered, simply increment the pointer - into the paragraph." - - lastIndex := lastIndex + 1. - ^false!
Item was removed: - ----- Method: MultiDisplayScanner>>crossedX (in category 'stop conditions') ----- - crossedX - "This condition will sometimes be reached 'legally' during display, when, - for instance the space that caused the line to wrap actually extends over - the right boundary. This character is allowed to display, even though it - is technically outside or straddling the clipping ectangle since it is in - the normal case not visible and is in any case appropriately clipped by - the scanner." - - ^ true !
Item was removed: - ----- Method: MultiDisplayScanner>>displayLine:offset:leftInRun: (in category 'scanning') ----- - displayLine: textLine offset: offset leftInRun: leftInRun - "The call on the primitive (scanCharactersFrom:to:in:rightX:) will be interrupted according to an array of stop conditions passed to the scanner at which time the code to handle the stop condition is run and the call on the primitive continued until a stop condition returns true (which means the line has terminated). leftInRun is the # of characters left to scan in the current run; when 0, it is time to call setStopConditions." - | done stopCondition nowLeftInRun startIndex string lastPos | - line := textLine. - morphicOffset := offset. - lineY := line top + offset y. - lineHeight := line lineHeight. - rightMargin := line rightMargin + offset x. - lastIndex := line first. - leftInRun <= 0 ifTrue: [self setStopConditions]. - leftMargin := (line leftMarginForAlignment: alignment) + offset x. - destX := runX := leftMargin. - fillBlt == nil ifFalse: - ["Not right" - fillBlt destX: line left destY: lineY - width: line width left height: lineHeight; copyBits]. - lastIndex := line first. - leftInRun <= 0 - ifTrue: [nowLeftInRun := text runLengthFor: lastIndex] - ifFalse: [nowLeftInRun := leftInRun]. - baselineY := lineY + line baseline. - destY := baselineY - font ascent. - runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last. - spaceCount := 0. - done := false. - string := text string. - [done] whileFalse:[ - startIndex := lastIndex. - lastPos := destX@destY. - stopCondition := self scanCharactersFrom: lastIndex to: runStopIndex - in: string rightX: rightMargin stopConditions: stopConditions - kern: kern. - lastIndex >= startIndex ifTrue:[ - font displayString: string on: bitBlt - from: startIndex - "XXXX: The following is an interesting bug. All stopConditions exept #endOfRun - have lastIndex past the last character displayed. #endOfRun sets it *on* the character. - If we display up until lastIndex then we will also display invisible characters like - CR and tab. This problem should be fixed in the scanner (i.e., position lastIndex - consistently) but I don't want to deal with the fallout right now so we keep the - fix minimally invasive." - to: (stopCondition == #endOfRun ifTrue:[lastIndex] ifFalse:[lastIndex-1]) - at: lastPos kern: kern baselineY: baselineY]. - "see setStopConditions for stopping conditions for displaying." - done := self perform: stopCondition. - "lastIndex > runStopIndex ifTrue: [done := true]." - ]. - ^ runStopIndex - lastIndex "Number of characters remaining in the current run"!
Item was removed: - ----- Method: MultiDisplayScanner>>displayLines:in:clippedBy: (in category 'MVC-compatibility') ----- - displayLines: linesInterval in: aParagraph clippedBy: visibleRectangle - "The central display routine. The call on the primitive - (scanCharactersFrom:to:in:rightX:) will be interrupted according to an - array of stop conditions passed to the scanner at which time the code to - handle the stop condition is run and the call on the primitive continued - until a stop condition returns true (which means the line has - terminated)." - | runLength done stopCondition leftInRun startIndex string lastPos | - "leftInRun is the # of characters left to scan in the current run; - when 0, it is time to call 'self setStopConditions'" - morphicOffset := 0@0. - leftInRun := 0. - self initializeFromParagraph: aParagraph clippedBy: visibleRectangle. - ignoreColorChanges := false. - paragraph := aParagraph. - foregroundColor := paragraphColor := aParagraph foregroundColor. - backgroundColor := aParagraph backgroundColor. - aParagraph backgroundColor isTransparent - ifTrue: [fillBlt := nil] - ifFalse: [fillBlt := bitBlt copy. "Blt to fill spaces, tabs, margins" - fillBlt sourceForm: nil; sourceOrigin: 0@0. - fillBlt fillColor: aParagraph backgroundColor]. - rightMargin := aParagraph rightMarginForDisplay. - lineY := aParagraph topAtLineIndex: linesInterval first. - bitBlt destForm deferUpdatesIn: visibleRectangle while: [ - linesInterval do: - [:lineIndex | - leftMargin := aParagraph leftMarginForDisplayForLine: lineIndex alignment: (alignment ifNil:[textStyle alignment]). - destX := (runX := leftMargin). - line := aParagraph lines at: lineIndex. - lineHeight := line lineHeight. - fillBlt == nil ifFalse: - [fillBlt destX: visibleRectangle left destY: lineY - width: visibleRectangle width height: lineHeight; copyBits]. - lastIndex := line first. - leftInRun <= 0 - ifTrue: [self setStopConditions. "also sets the font" - leftInRun := text runLengthFor: line first]. - baselineY := lineY + line baseline. - destY := baselineY - font ascent. "Should have happened in setFont" - runLength := leftInRun. - runStopIndex := lastIndex + (runLength - 1) min: line last. - leftInRun := leftInRun - (runStopIndex - lastIndex + 1). - spaceCount := 0. - done := false. - string := text string. - self handleIndentation. - [done] whileFalse:[ - startIndex := lastIndex. - lastPos := destX@destY. - stopCondition := self scanCharactersFrom: lastIndex to: runStopIndex - in: string rightX: rightMargin stopConditions: stopConditions - kern: kern. - lastIndex >= startIndex ifTrue:[ - font displayString: string on: bitBlt - from: startIndex to: lastIndex at: lastPos kern: kern baselineY: baselineY]. - "see setStopConditions for stopping conditions for displaying." - done := self perform: stopCondition]. - fillBlt == nil ifFalse: - [fillBlt destX: destX destY: lineY width: visibleRectangle right-destX height: lineHeight; copyBits]. - lineY := lineY + lineHeight]]!
Item was removed: - ----- Method: MultiDisplayScanner>>endOfRun (in category 'stop conditions') ----- - endOfRun - "The end of a run in the display case either means that there is actually - a change in the style (run code) to be associated with the string or the - end of this line has been reached." - | runLength | - lastIndex = line last ifTrue: [^true]. - runX := destX. - runLength := text runLengthFor: (lastIndex := lastIndex + 1). - runStopIndex := lastIndex + (runLength - 1) min: line last. - self setStopConditions. - ^ false!
Item was removed: - ----- Method: MultiDisplayScanner>>initializeFromParagraph:clippedBy: (in category 'MVC-compatibility') ----- - initializeFromParagraph: aParagraph clippedBy: clippingRectangle - - super initializeFromParagraph: aParagraph clippedBy: clippingRectangle. - bitBlt := BitBlt asGrafPort toForm: aParagraph destinationForm. - bitBlt sourceX: 0; width: 0. "Init BitBlt so that the first call to a primitive will not fail" - bitBlt combinationRule: Form paint. - bitBlt colorMap: - (Bitmap with: 0 "Assumes 1-bit deep fonts" - with: (bitBlt destForm pixelValueFor: aParagraph foregroundColor)). - bitBlt clipRect: clippingRectangle. - !
Item was removed: - ----- Method: MultiDisplayScanner>>isBreakableAt:in:in: (in category 'multilingual scanning') ----- - isBreakableAt: index in: sourceString in: encodingClass - - ^ false. - !
Item was removed: - ----- Method: MultiDisplayScanner>>paddedSpace (in category 'stop conditions') ----- - paddedSpace - "Each space is a stop condition when the alignment is right justified. - Padding must be added to the base width of the space according to - which space in the line this space is and according to the amount of - space that remained at the end of the line when it was composed." - - spaceCount := spaceCount + 1. - destX := destX + spaceWidth + (line justifiedPadFor: spaceCount). - lastIndex := lastIndex + 1. - ^ false!
Item was removed: - ----- Method: MultiDisplayScanner>>placeEmbeddedObject: (in category 'scanning') ----- - placeEmbeddedObject: anchoredMorph - anchoredMorph relativeTextAnchorPosition ifNotNil:[ - anchoredMorph position: - anchoredMorph relativeTextAnchorPosition + - (anchoredMorph owner textBounds origin x @ 0) - - (0@morphicOffset y) + (0@lineY). - ^true - ]. - (super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false]. - anchoredMorph isMorph ifTrue: [ - anchoredMorph position: ((destX - anchoredMorph width)@lineY) - morphicOffset - ] ifFalse: [ - destY := lineY. - baselineY := lineY + anchoredMorph height.. - runX := destX. - anchoredMorph - displayOn: bitBlt destForm - at: destX - anchoredMorph width @ destY - clippingBox: bitBlt clipRect - ]. - ^ true!
Item was removed: - ----- Method: MultiDisplayScanner>>plainTab (in category 'stop conditions') ----- - plainTab - | oldX | - oldX := destX. - super plainTab. - fillBlt == nil ifFalse: - [fillBlt destX: oldX destY: destY width: destX - oldX height: font height; copyBits]!
Item was removed: - ----- Method: MultiDisplayScanner>>presentationText: (in category 'private') ----- - presentationText: t - - text := t. - !
Item was removed: - ----- Method: MultiDisplayScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:stopConditions:kern: (in category 'multilingual scanning') ----- - scanMultiCharactersCombiningFrom: startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta - - | encoding f nextDestX maxAscii startEncoding char charValue | - lastIndex := startIndex. - lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at: EndOfRun]. - startEncoding := (sourceString at: startIndex) leadingChar. - font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at: 1]. - ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet]) ifTrue: [ - [f := font fontArray at: startEncoding + 1] - on: Exception do: [:ex | f := font fontArray at: 1]. - f ifNil: [ f := font fontArray at: 1]. - maxAscii := f maxAscii. - spaceWidth := f widthOf: Space. - ] ifFalse: [ - maxAscii := font maxAscii. - ]. - - [lastIndex <= stopIndex] whileTrue: [ - encoding := (sourceString at: lastIndex) leadingChar. - encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stops at: EndOfRun]. - char := (sourceString at: lastIndex). - charValue := char charCode. - charValue > maxAscii ifTrue: [charValue := maxAscii]. - (encoding = 0 and: [(stopConditions at: charValue + 1) ~~ nil]) ifTrue: [ - ^ stops at: charValue + 1 - ]. - nextDestX := destX + (self widthOf: char inFont: font). - nextDestX > rightX ifTrue: [^ stops at: CrossedX]. - destX := nextDestX + kernDelta. - lastIndex := lastIndex + 1. - ]. - lastIndex := stopIndex. - ^ stops at: EndOfRun!
Item was removed: - ----- Method: MultiDisplayScanner>>setDestForm: (in category 'private') ----- - setDestForm: df - bitBlt setDestForm: df.!
Item was removed: - ----- Method: MultiDisplayScanner>>setFont (in category 'private') ----- - setFont - foregroundColor := paragraphColor. - super setFont. "Sets font and emphasis bits, and maybe foregroundColor" - font installOn: bitBlt foregroundColor: foregroundColor backgroundColor: Color transparent. - text ifNotNil:[ - baselineY := lineY + line baseline. - destY := baselineY - font ascent]. - !
Item was removed: - ----- Method: MultiDisplayScanner>>setPort: (in category 'private') ----- - setPort: aBitBlt - "Install the BitBlt to use" - bitBlt := aBitBlt. - bitBlt sourceX: 0; width: 0. "Init BitBlt so that the first call to a primitive will not fail" - bitBlt sourceForm: nil. "Make sure font installation won't be confused" - !
Item was removed: - ----- Method: MultiDisplayScanner>>setStopConditions (in category 'stop conditions') ----- - setStopConditions - "Set the font and the stop conditions for the current run." - - self setFont. - self setConditionArray: (alignment = Justified ifTrue: [#paddedSpace]). - - " - alignment = Justified ifTrue: [ - stopConditions == DefaultStopConditions - ifTrue:[stopConditions := stopConditions copy]. - stopConditions at: Space asciiValue + 1 put: #paddedSpace] - "!
Item was removed: - ----- Method: MultiDisplayScanner>>tab (in category 'stop conditions') ----- - tab - self plainTab. - lastIndex := lastIndex + 1. - ^ false!
Item was removed: - ----- Method: MultiDisplayScanner>>text:textStyle:foreground:background:fillBlt:ignoreColorChanges: (in category 'private') ----- - text: t textStyle: ts foreground: foreColor background: backColor fillBlt: blt ignoreColorChanges: shadowMode - text := t. - textStyle := ts. - foregroundColor := paragraphColor := foreColor. - (backgroundColor := backColor) isTransparent ifFalse: - [fillBlt := blt. - fillBlt fillColor: backgroundColor]. - ignoreColorChanges := shadowMode!
Item was removed: - ----- Method: MultiDisplayScanner>>textColor: (in category 'private') ----- - textColor: textColor - ignoreColorChanges ifTrue: [^ self]. - foregroundColor := textColor!
Item was removed: - NewParagraph subclass: #MultiNewParagraph - instanceVariableNames: 'presentationText presentationLines' - classVariableNames: '' - poolDictionaries: 'TextConstants' - category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed: - ----- Method: MultiNewParagraph>>displayOn:using:at: (in category 'fonts-display') ----- - displayOn: aCanvas using: displayScanner at: somePosition - "Send all visible lines to the displayScanner for display" - - | visibleRectangle offset leftInRun line | - visibleRectangle := aCanvas clipRect. - offset := somePosition - positionWhenComposed. - leftInRun := 0. - (self lineIndexForPoint: visibleRectangle topLeft) - to: (self lineIndexForPoint: visibleRectangle bottomRight) - do: [:i | line := lines at: i. - self displaySelectionInLine: line on: aCanvas. - line first <= line last ifTrue: - [leftInRun := displayScanner displayLine: line - offset: offset leftInRun: leftInRun]]. - !
Item was removed: - ----- Method: MultiNewParagraph>>displayOnTest:using:at: (in category 'fonts-display') ----- - displayOnTest: aCanvas using: displayScanner at: somePosition - "Send all visible lines to the displayScanner for display" - - | visibleRectangle offset leftInRun line | - (presentationText isNil or: [presentationLines isNil]) ifTrue: [ - ^ self displayOn: aCanvas using: displayScanner at: somePosition. - ]. - visibleRectangle := aCanvas clipRect. - offset := somePosition - positionWhenComposed. - leftInRun := 0. - (self lineIndexForPoint: visibleRectangle topLeft) - to: (self lineIndexForPoint: visibleRectangle bottomRight) - do: [:i | line := presentationLines at: i. - self displaySelectionInLine: line on: aCanvas. - line first <= line last ifTrue: - [leftInRun := displayScanner displayLine: line - offset: offset leftInRun: leftInRun]]. - !
Item was removed: - ----- Method: MultiNewParagraph>>multiComposeLinesFrom:to:delta:into:priorLines:atY: (in category 'composition') ----- - multiComposeLinesFrom: start to: stop delta: delta into: lineColl priorLines: priorLines - atY: startingY - "While the section from start to stop has changed, composition may ripple all the way to the end of the text. However in a rectangular container, if we ever find a line beginning with the same character as before (ie corresponding to delta in the old lines), then we can just copy the old lines from there to the end of the container, with adjusted indices and y-values" - - | newResult composer presentationInfo | - - composer := MultiTextComposer new. - presentationLines := nil. - presentationText := nil. - newResult := composer - multiComposeLinesFrom: start - to: stop - delta: delta - into: lineColl - priorLines: priorLines - atY: startingY - textStyle: textStyle - text: text - container: container - wantsColumnBreaks: wantsColumnBreaks == true. - lines := newResult first asArray. - maxRightX := newResult second. - presentationInfo := composer getPresentationInfo. - presentationLines := presentationInfo first asArray. - presentationText := presentationInfo second. - "maxRightX printString displayAt: 0@0." - ^maxRightX - !
Item was removed: - ----- Method: MultiNewParagraph>>presentationLines (in category 'accessing') ----- - presentationLines - - ^ presentationLines. - !
Item was removed: - ----- Method: MultiNewParagraph>>presentationText (in category 'accessing') ----- - presentationText - - ^ presentationText. - !
Item was removed: - TextComposer subclass: #MultiTextComposer - instanceVariableNames: 'presentation presentationLines' - classVariableNames: '' - poolDictionaries: 'TextConstants' - category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed: - ----- Method: MultiTextComposer>>composeEachRectangleIn: (in category 'as yet unclassified') ----- - composeEachRectangleIn: rectangles - - | myLine lastChar | - - 1 to: rectangles size do: [:i | - currCharIndex <= theText size ifFalse: [^false]. - myLine := scanner - composeFrom: currCharIndex - inRectangle: (rectangles at: i) - firstLine: isFirstLine - leftSide: i=1 - rightSide: i=rectangles size. - lines addLast: myLine. - presentationLines addLast: scanner getPresentationLine. - presentation ifNil: [presentation := scanner getPresentation] - ifNotNil: [presentation := presentation, scanner getPresentation]. - actualHeight := actualHeight max: myLine lineHeight. "includes font changes" - currCharIndex := myLine last + 1. - lastChar := theText at: myLine last. - lastChar = Character cr ifTrue: [^#cr]. - wantsColumnBreaks ifTrue: [ - lastChar = TextComposer characterForColumnBreak ifTrue: [^#columnBreak]. - ]. - ]. - ^false!
Item was removed: - ----- Method: MultiTextComposer>>getPresentationInfo (in category 'as yet unclassified') ----- - getPresentationInfo - - ^ Array with: presentationLines with: presentation. - !
Item was removed: - ----- Method: MultiTextComposer>>multiComposeLinesFrom:to:delta:into:priorLines:atY:textStyle:text:container:wantsColumnBreaks: (in category 'as yet unclassified') ----- - multiComposeLinesFrom: argStart to: argStop delta: argDelta into: argLinesCollection priorLines: argPriorLines atY: argStartY textStyle: argTextStyle text: argText container: argContainer wantsColumnBreaks: argWantsColumnBreaks - - wantsColumnBreaks := argWantsColumnBreaks. - lines := argLinesCollection. - presentationLines := argLinesCollection copy. - theTextStyle := argTextStyle. - theText := argText. - theContainer := argContainer. - deltaCharIndex := argDelta. - currCharIndex := startCharIndex := argStart. - stopCharIndex := argStop. - prevLines := argPriorLines. - currentY := argStartY. - defaultLineHeight := theTextStyle lineGrid. - maxRightX := theContainer left. - possibleSlide := stopCharIndex < theText size and: [theContainer isMemberOf: Rectangle]. - nowSliding := false. - prevIndex := 1. - scanner := MultiCompositionScanner new text: theText textStyle: theTextStyle. - scanner wantsColumnBreaks: wantsColumnBreaks. - isFirstLine := true. - self composeAllLines. - isFirstLine ifTrue: ["No space in container or empty text" - self - addNullLineWithIndex: startCharIndex - andRectangle: (theContainer topLeft extent: 0@defaultLineHeight) - ] ifFalse: [ - self fixupLastLineIfCR - ]. - ^{lines asArray. maxRightX} - - !
Note regarding the thread 'MorphicProject subclass: #EtoysProject'
Answer 'NewParagraph' when asked for a replacement class for 'MultiNewParagraph'
On Sat, 15 Apr 2017 13:45:33 0000, commits@source.squeak.org commits@source.squeak.org wrote:
Nicolas Cellier uploaded a new version of EToys to project The Trunk: http://source.squeak.org/trunk/EToys-nice.292.mcz
==================== Summary ====================
Name: EToys-nice.292 Author: nice Time: 15 April 2017, 3:44:39.800437 pm UUID: 39acfe15-791f-41c6-8aad-d679664643e7 Ancestors: EToys-eem.291
Remove the Multi*Scanner, MultiNewParagraph, MultiComposer because they have no additional value.
=============== Diff against EToys-eem.291 ===============
Item was changed: SystemOrganization addCategory: #'Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-CustomEvents'! SystemOrganization addCategory: #'Etoys-Experimental'! SystemOrganization addCategory: #'Etoys-Outliner'! SystemOrganization addCategory: #'Etoys-Protocols'! SystemOrganization addCategory: #'Etoys-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Scripting Tiles'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Base'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Connectors'! SystemOrganization addCategory: #'Etoys-Squeakland-EToys-Kedama'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Calendar'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Debugger'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Help'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Input'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting Tiles'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-SpeechBubbles'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Tile Scriptors'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-External'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Text'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Intersection'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Simplification'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Triangulation'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-AdditionalMorphs'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Charts'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Postscript Filters'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-WebCam'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Basic'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Books'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Components'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Demo'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Experimental'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Games'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Games-Chess'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-GeeMail'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Mentoring'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Navigators'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PartsBin'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PDA'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Windows'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Worlds'! SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-Languages'!
- SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-Scanning'! SystemOrganization addCategory:
#'Etoys-Squeakland-Multilingual-TextConversion'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Formatter'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Forms'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Parser'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Parser Entities'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Tokenizer'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-MIME'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-TelNet WordNet'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-UI'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-Url'! SystemOrganization addCategory: #'Etoys-Squeakland-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Interface'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Ogg'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Scores'! SystemOrganization addCategory: #'Etoys-Squeakland-ST80-Morphic'! SystemOrganization addCategory: #'Etoys-Squeakland-SUnit'! SystemOrganization addCategory: #'Etoys-Squeakland-Sugar'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Clipboard-Extended'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Compiler'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Exceptions Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Changes'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Explorer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-File Contents Browser'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Process Browser'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ObjectVectors'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTreeTransformer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTree-AttributeDefinition'! SystemOrganization addCategory: #'Etoys-Stacks'! SystemOrganization addCategory: #'Etoys-StarSqueak'! SystemOrganization addCategory: #'Etoys-Support'! SystemOrganization addCategory: #'Etoys-Tests'! SystemOrganization addCategory: #'Etoys-Tile Scriptors'! SystemOrganization addCategory: #'Etoys-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-SISS-Serialization'! SystemOrganization addCategory: #'Etoys-OLPC-Display'! SystemOrganization addCategory: #'Etoys-ReleaseBuilder'! SystemOrganization addCategory: #'Etoys-UserInterfaceTheme'!
Item was removed:
- ----- Method:
GrafPort>>displayScannerForMulti:foreground:background:ignoreColorChanges: (in category '*Etoys-Squeakland-accessing') -----
- displayScannerForMulti: para foreground: foreColor background: backColor
ignoreColorChanges: shadowMode
- ((para isMemberOf: MultiNewParagraph) or: [para text string
isByteString]) ifTrue: [
^ (MultiDisplayScanner new text: para presentationText textStyle: paratextStyle
foreground: foreColor background: backColor fillBlt: selfignoreColorChanges: shadowMode)setPort: self clone- ].
- ^ (DisplayScanner new text: para text textStyle: para textStyle
foreground: foreColor background: backColor fillBlt: selfignoreColorChanges: shadowMode)setPort: self clone- !
Item was removed:
- MultiCharacterScanner subclass: #MultiCanvasCharacterScanner
- instanceVariableNames: 'canvas fillBlt foregroundColor runX lineY'
- classVariableNames: ''
- poolDictionaries: ''
- category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>canvas: (in category
'accessing') -----
- canvas: aCanvas
- "set the canvas to draw on"
- canvas ifNotNil: [ self inform: 'initializing twice!!' ].
- canvas := aCanvas!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>cr (in category 'stop
conditions') -----
- cr
- "When a carriage return is encountered, simply increment the pointer
- into the paragraph."
- lastIndex := lastIndex + 1.
- ^false!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
- "This condition will sometimes be reached 'legally' during display, when,
- for instance the space that caused the line to wrap actually extends over
- the right boundary. This character is allowed to display, even though it
- is technically outside or straddling the clipping ectangle since it is in
- the normal case not visible and is in any case appropriately clipped by
- the scanner."
- "self fillLeading."
- ^ true !
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>displayLine:offset:leftInRun:
(in category 'scanning') -----
- displayLine: textLine offset: offset leftInRun: leftInRun
- | nowLeftInRun done startLoc startIndex stopCondition |
- "largely copied from DisplayScanner's routine"
- line := textLine.
- foregroundColor ifNil: [ foregroundColor := Color black ].
- leftMargin := (line leftMarginForAlignment: alignment) + offset x.
- rightMargin := line rightMargin + offset x.
- lineY := line top + offset y.
- lastIndex := textLine first.
- leftInRun <= 0
ifTrue: [self setStopConditions. "also sets the font"nowLeftInRun := text runLengthFor: lastIndex]ifFalse: [nowLeftInRun := leftInRun].- runX := destX := leftMargin.
- runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last.
- spaceCount := 0.
- done := false.
- [done] whileFalse: [
"remember where this portion of the line starts"startLoc := destX@destY.startIndex := lastIndex."find the end of this portion of the line"stopCondition := self scanCharactersFrom: lastIndex to: runStopIndexin: text string rightX: rightMargin stopConditions: stopConditionskern: kern "displaying: false"."display that portion of the line"canvas drawString: text stringfrom: startIndex to: lastIndexat: startLocfont: fontcolor: foregroundColor."handle the stop condition"done := self perform: stopCondition- ].
- ^runStopIndex - lastIndex!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>doesDisplaying (in category
'private') -----
- doesDisplaying
- ^false "it doesn't do displaying using copyBits"!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
- "The end of a run in the display case either means that there is actually
- a change in the style (run code) to be associated with the string or the
- end of this line has been reached."
- | runLength |
- lastIndex = line last ifTrue: [^true].
- runX := destX.
- runLength := text runLengthFor: (lastIndex := lastIndex + 1).
- runStopIndex := lastIndex + (runLength - 1) min: line last.
- self setStopConditions.
- ^ false!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>paddedSpace (in category 'stop
conditions') -----
- paddedSpace
- "Each space is a stop condition when the alignment is right justified.
- Padding must be added to the base width of the space according to
- which space in the line this space is and according to the amount of
- space that remained at the end of the line when it was composed."
- destX := destX + spaceWidth + (line justifiedPadFor: spaceCount).
- lastIndex := lastIndex + 1.
- ^ false!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>setFont (in category 'private')
- setFont
- foregroundColor ifNil: [foregroundColor := Color black].
- super setFont.
- baselineY := lineY + line baseline.
- destY := baselineY - font ascent.!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>setStopConditions (in category
'stop conditions') -----
- setStopConditions
- "Set the font and the stop conditions for the current run."
- self setFont.
- self setConditionArray: (textStyle alignment = Justified ifTrue:
[#paddedSpace]).
- !
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>tab (in category 'stop
conditions') -----
- tab
- destX := (alignment == Justified and: [self leadingTab not])
ifTrue: "imbedded tabs in justified text are weird"[destX + (textStyle tabWidth - (line justifiedTabDeltaFor: spaceCount))max: destX]
ifFalse:[textStyle nextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin].- lastIndex := lastIndex + 1.
- ^ false!
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>textColor: (in category
'private') -----
- textColor: color
- foregroundColor := color!
Item was removed:
- MultiCharacterScanner subclass: #MultiCharacterBlockScanner
- instanceVariableNames: 'characterPoint characterIndex lastCharacter
lastCharacterExtent lastSpaceOrTabExtent nextLeftMargin specialWidth'
- classVariableNames: ''
- poolDictionaries: ''
- category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>buildCharacterBlockIn: (in
category 'private') -----
- buildCharacterBlockIn: para
- | lineIndex runLength lineStop done stopCondition |
- "handle nullText"
- (para numberOfLines = 0 or: [text size = 0])
ifTrue: [^ CharacterBlock new stringIndex: 1 "like being off end ofstring"
text: para texttopLeft: (para leftMarginForDisplayForLine: 1 alignment: (alignmentifNil:[textStyle alignment]))
@ para compositionRectangle topextent: 0 @ textStyle lineGrid].- "find the line"
- lineIndex := para lineIndexOfTop: characterPoint y.
- destY := para topAtLineIndex: lineIndex.
- line := para lines at: lineIndex.
- rightMargin := para rightMarginForDisplay.
- (lineIndex = para numberOfLines and:
[(destY + line lineHeight) < characterPoint y])ifTrue: ["if beyond lastLine, force search to last character"self characterPointSetX: rightMargin]ifFalse: [characterPoint y < (para compositionRectangle) topifTrue: ["force search to first line"characterPoint := (para compositionRectangle) topLeft].characterPoint x > rightMarginifTrue: [self characterPointSetX: rightMargin]].- destX := (leftMargin := para leftMarginForDisplayForLine: lineIndex
alignment: (alignment ifNil:[textStyle alignment])).
- nextLeftMargin := para leftMarginForDisplayForLine: lineIndex+1
alignment: (alignment ifNil:[textStyle alignment]).
- lastIndex := line first.
- self setStopConditions. "also sets font"
- runLength := (text runLengthFor: line first).
- characterIndex == nil
ifTrue: [lineStop := line last "characterBlockAtPoint"]ifFalse: [lineStop := characterIndex "characterBlockForIndex"].- (runStopIndex := lastIndex + (runLength - 1)) > lineStop
ifTrue: [runStopIndex := lineStop].- lastCharacterExtent := 0 @ line lineHeight.
- spaceCount := 0. done := false.
- self handleIndentation.
- [done]
- whileFalse:
- [stopCondition := self scanCharactersFrom: lastIndex to: runStopIndex
in: text string rightX: characterPoint xstopConditions: stopConditions kern: kern.- "see setStopConditions for stopping conditions for character block operations."
- self lastCharacterExtentSetX: (font widthOf: (text at: lastIndex)).
- (self perform: stopCondition) ifTrue:
[characterIndex == nilifTrue: ["characterBlockAtPoint"^ CharacterBlock new stringIndex: lastIndex text: texttopLeft: characterPoint + (font descentKern @ 0)extent: lastCharacterExtent]ifFalse: ["characterBlockForIndex"^ CharacterBlock new stringIndex: lastIndex text: texttopLeft: characterPoint + ((font descentKern) - kern @ 0)extent: lastCharacterExtent]]]!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockAtPoint:in: (in
category 'scanning') -----
- characterBlockAtPoint: aPoint in: aParagraph
- "Answer a CharacterBlock for character in aParagraph at point aPoint. It
- is assumed that aPoint has been transformed into coordinates appropriate
- to the text's destination form rectangle and the composition rectangle."
- self initializeFromParagraph: aParagraph clippedBy: aParagraph
clippingRectangle.
- characterPoint := aPoint.
- ^self buildCharacterBlockIn: aParagraph!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockAtPoint:index:in:
(in category 'scanning') -----
- characterBlockAtPoint: aPoint index: index in: textLine
- "This method is the Morphic characterBlock finder. It combines
- MVC's characterBlockAtPoint:, -ForIndex:, and buildCharcterBlock:in:"
- | runLength lineStop done stopCondition |
- line := textLine.
- rightMargin := line rightMargin.
- lastIndex := line first.
- self setStopConditions. "also sets font"
- characterIndex := index. " == nil means scanning for point"
- characterPoint := aPoint.
- (characterPoint isNil or: [characterPoint y > line bottom])
ifTrue: [characterPoint := line bottomRight].- (text isEmpty or: [(characterPoint y < line top or: [characterPoint x <
line left])
or: [characterIndex notNil and: [characterIndex < line first]]])ifTrue: [^ (CharacterBlock new stringIndex: line first text: texttopLeft: line leftMargin@line top extent: 0 @ textStyle lineGrid)textLine: line].- destX := leftMargin := line leftMarginForAlignment: alignment.
- destY := line top.
- runLength := text runLengthFor: line first.
- characterIndex
ifNotNil: [lineStop := characterIndex "scanning for index"]ifNil: [lineStop := line last "scanning for point"].- runStopIndex := lastIndex + (runLength - 1) min: lineStop.
- lastCharacterExtent := 0 @ line lineHeight.
- spaceCount := 0.
- done := false.
- [done] whileFalse:
[stopCondition := self scanCharactersFrom: lastIndex to: runStopIndexin: text string rightX: characterPoint xstopConditions: stopConditions kern: kern."see setStopConditions for stopping conditions for character blockself lastCharacterExtentSetX: (specialWidthifNil: [font widthOf: (text at: lastIndex)]ifNotNil: [specialWidth]).(self perform: stopCondition) ifTrue:[characterIndexifNil: ["Result for characterBlockAtPoint: "(stopCondition ~~ #cr and: [ lastIndex == line lastand: [ aPoint x > ((characterPoint x) + (lastCharacterExtent x / 2))]])
ifTrue: [ "Correct for right half of last character in line"^ (CharacterBlock new stringIndex: lastIndex + 1text: texttopLeft: characterPoint + (lastCharacterExtent x @ 0) + (fontdescentKern @ 0)
extent: 0 @ lastCharacterExtent y)textLine: line ].^ (CharacterBlock new stringIndex: lastIndextext: text topLeft: characterPoint + (font descentKern @ 0)extent: lastCharacterExtent - (font baseKern @ 0))textLine: line]ifNotNil: ["Result for characterBlockForIndex: "^ (CharacterBlock new stringIndex: characterIndextext: text topLeft: characterPoint + ((font descentKern) - kern @
extent: lastCharacterExtent)textLine: line]]]!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockForIndex:in: (in
category 'scanning') -----
- characterBlockForIndex: targetIndex in: aParagraph
- "Answer a CharacterBlock for character in aParagraph at targetIndex. The
- coordinates in the CharacterBlock will be appropriate to the intersection
- of the destination form rectangle and the composition rectangle."
- self
initializeFromParagraph: aParagraphclippedBy: aParagraph clippingRectangle.- characterIndex := targetIndex.
- characterPoint :=
aParagraph rightMarginForDisplay @(aParagraph topAtLineIndex:(aParagraph lineIndexOfCharacterIndex: characterIndex)).- ^self buildCharacterBlockIn: aParagraph!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterPointSetX: (in category
'private') -----
- characterPointSetX: xVal
- characterPoint := xVal @ characterPoint y!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>cr (in category 'stop
conditions') -----
- cr
- "Answer a CharacterBlock that specifies the current location of the mouse
- relative to a carriage return stop condition that has just been
- encountered. The ParagraphEditor convention is to denote selections by
- CharacterBlocks, sometimes including the carriage return (cursor is at
- the end) and sometimes not (cursor is in the middle of the text)."
- ((characterIndex ~= nil
and: [characterIndex > text size])or: [(line last = text size)and: [(destY + line lineHeight) < characterPoint y]])ifTrue: ["When off end of string, give data for next character"destY := destY + line lineHeight.baselineY := line lineHeight.lastCharacter := nil.characterPoint := (nextLeftMargin ifNil: [leftMargin]) @ destY.lastIndex := lastIndex + 1.self lastCharacterExtentSetX: 0.^ true].lastCharacter := CR.characterPoint := destX @ destY.self lastCharacterExtentSetX: rightMargin - destX.^true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
- "Text display has wrapping. The scanner just found a character past the x
- location of the cursor. We know that the cursor is pointing at a
character
- or before one."
- | leadingTab currentX |
- characterIndex == nil ifFalse: [
"If the last character of the last line is a space,and it crosses the right margin, then locatingthe character block after it is impossible without this hack."characterIndex > text size ifTrue: [lastIndex := characterIndex.characterPoint := (nextLeftMargin ifNil: [leftMargin]) @ (destY + linelineHeight).
^true]].- characterPoint x <= (destX + (lastCharacterExtent x // 2))
ifTrue: [lastCharacter := (text at: lastIndex).characterPoint := destX @ destY.^true].- lastIndex >= line last
ifTrue: [lastCharacter := (text at: line last).characterPoint := destX @ destY.^true].- "Pointing past middle of a character, return the next character."
- lastIndex := lastIndex + 1.
- lastCharacter := text at: lastIndex.
- currentX := destX + lastCharacterExtent x + kern.
- self lastCharacterExtentSetX: (font widthOf: lastCharacter).
- characterPoint := currentX @ destY.
- lastCharacter = Space ifFalse: [^ true].
- "Yukky if next character is space or tab."
- alignment = Justified ifTrue:
[self lastCharacterExtentSetX:(lastCharacterExtent x + (line justifiedPadFor: (spaceCount + 1))).^ true].- true ifTrue: [^ true].
- "NOTE: I find no value to the following code, and so have defeated it -
DI"
- "See tabForDisplay for illumination on the following awfulness."
- leadingTab := true.
- line first to: lastIndex - 1 do:
[:index | (text at: index) ~= Tab ifTrue: [leadingTab := false]].- (alignment ~= Justified or: [leadingTab])
ifTrue: [self lastCharacterExtentSetX: (textStyle nextTabXFrom: currentXleftMargin: leftMargin rightMargin: rightMargin) -currentX]ifFalse: [self lastCharacterExtentSetX: (((currentX + (textStyletabWidth -
(line justifiedTabDeltaFor: spaceCount))) -currentX) max: 0)].- ^ true!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
- "Before arriving at the cursor location, the selection has encountered an
- end of run. Answer false if the selection continues, true otherwise. Set
- up indexes for building the appropriate CharacterBlock."
- | runLength lineStop |
- (((characterIndex ~~ nil and:
[runStopIndex < characterIndex and: [runStopIndex < text size]])or: [characterIndex == nil and: [lastIndex < line last]]) or: [((lastIndex < line last)and: [((text at: lastIndex) leadingChar ~= (text at: lastIndex+1)leadingChar)
and: [lastIndex ~= characterIndex]])])ifTrue: ["We're really at the end of a real run."runLength := (text runLengthFor: (lastIndex := lastIndex + 1)).characterIndex ~~ nilifTrue: [lineStop := characterIndex "scanning for index"]ifFalse: [lineStop := line last "scanning for point"].(runStopIndex := lastIndex + (runLength - 1)) > lineStopifTrue: [runStopIndex := lineStop].self setStopConditions.^false].- lastCharacter := text at: lastIndex.
- characterPoint := destX @ destY.
- ((lastCharacter = Space and: [alignment = Justified])
or: [lastCharacter = Tab and: [lastSpaceOrTabExtent notNil]])ifTrue: [lastCharacterExtent := lastSpaceOrTabExtent].- characterIndex ~~ nil
ifTrue: ["If scanning for an index and we've stopped on that index,then we back destX off by the width of the character stopped on(it will be pointing at the right side of the character) and return"runStopIndex = characterIndexifTrue: [self characterPointSetX: destX - lastCharacterExtent x.^true]."Otherwise the requested index was greater than the length of thestring. Return string size + 1 as index, indicate further that offthe
string by setting character to nil and the extent to 0."lastIndex := lastIndex + 1.lastCharacter := nil.self lastCharacterExtentSetX: 0.^true].- "Scanning for a point and either off the end of the line or off the end
of the string."
- runStopIndex = text size
ifTrue: ["off end of string"lastIndex := lastIndex + 1.lastCharacter := nil.self lastCharacterExtentSetX: 0.^true].- "just off end of line without crossing x"
- lastIndex := lastIndex + 1.
- ^true!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>indentationLevel: (in category
'scanning') -----
- indentationLevel: anInteger
- super indentationLevel: anInteger.
- nextLeftMargin := leftMargin.
- indentationLevel timesRepeat: [
nextLeftMargin := textStyle nextTabXFrom: nextLeftMarginleftMargin: leftMarginrightMargin: rightMargin]!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>lastCharacterExtentSetX: (in
category 'private') -----
- lastCharacterExtentSetX: xVal
- lastCharacterExtent := xVal @ lastCharacterExtent y!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>lastSpaceOrTabExtentSetX: (in
category 'private') -----
- lastSpaceOrTabExtentSetX: xVal
- lastSpaceOrTabExtent := xVal @ lastSpaceOrTabExtent y!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>paddedSpace (in category 'stop
conditions') -----
- paddedSpace
- "When the line is justified, the spaces will not be the same as the
font's
- space character. A padding of extra space must be considered in trying
- to find which character the cursor is pointing at. Answer whether the
- scanning has crossed the cursor."
- | pad |
- pad := 0.
- spaceCount := spaceCount + 1.
- pad := line justifiedPadFor: spaceCount.
- lastSpaceOrTabExtent := lastCharacterExtent copy.
- self lastSpaceOrTabExtentSetX: spaceWidth + pad.
- (destX + lastSpaceOrTabExtent x) >= characterPoint x
ifTrue: [lastCharacterExtent := lastSpaceOrTabExtent copy.^self crossedX].- lastIndex := lastIndex + 1.
- destX := destX + lastSpaceOrTabExtent x.
- ^ false
- !
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>placeEmbeddedObject: (in
category 'scanning') -----
- placeEmbeddedObject: anchoredMorph
- "Workaround: The following should really use #textAnchorType"
- anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].
- (super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false].
- specialWidth := anchoredMorph width.
- ^ true!
Item was removed:
- ----- Method:
MultiCharacterBlockScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:stopConditions:kern: (in category 'scanning') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
- | encoding f nextDestX maxAscii startEncoding char charValue |
- lastIndex := startIndex.
- lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:
EndOfRun].
- startEncoding := (sourceString at: startIndex) leadingChar.
- font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at:
1].
- ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])
ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at: 1].f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.- ] ifFalse: [
maxAscii := font maxAscii.- ].
- [lastIndex <= stopIndex] whileTrue: [
encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stopsat: EndOfRun].
char := (sourceString at: lastIndex).charValue := char charCode.charValue > maxAscii ifTrue: [charValue := maxAscii].(encoding = 0 and: [(stopConditions at: charValue + 1) ~~ nil]) ifTrue:[
^ stops at: charValue + 1].nextDestX := destX + (self widthOf: char inFont: font).nextDestX > rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.- ].
- lastIndex := stopIndex.
- ^ stops at: EndOfRun!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>setFont (in category 'stop
conditions') -----
- setFont
- specialWidth := nil.
- super setFont!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>setStopConditions (in category
'stop conditions') -----
- setStopConditions
- "Set the font and the stop conditions for the current run."
- self setFont.
- self setConditionArray: (alignment = Justified ifTrue: [#paddedSpace]).
- !
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>tab (in category 'stop
conditions') -----
- tab
- | currentX |
- currentX := (alignment == Justified and: [self leadingTab not])
ifTrue: "imbedded tabs in justified text are weird"[destX + (textStyle tabWidth - (line justifiedTabDeltaFor: spaceCount))max: destX]
ifFalse:[textStylenextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin].- lastSpaceOrTabExtent := lastCharacterExtent copy.
- self lastSpaceOrTabExtentSetX: (currentX - destX max: 0).
- currentX >= characterPoint x
ifTrue:[lastCharacterExtent := lastSpaceOrTabExtent copy.^ self crossedX].- destX := currentX.
- lastIndex := lastIndex + 1.
- ^false!
Item was removed:
- Object subclass: #MultiCharacterScanner
- instanceVariableNames: 'destX lastIndex xTable destY stopConditions text
textStyle alignment leftMargin rightMargin font line runStopIndex spaceCount spaceWidth emphasisCode kern indentationLevel wantsColumnBreaks presentation presentationLine numOfComposition baselineY firstDestX'
- classVariableNames: 'DefaultStopConditions NilCondition
PaddedSpaceCondition SpaceCondition'
- poolDictionaries: 'TextConstants'
- category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed:
- ----- Method: MultiCharacterScanner class>>initialize (in category 'class
initialization') -----
- initialize
- "
- MultiCharacterScanner initialize
- "
- | a |
- a := Array new: 258.
- a at: 1 + 1 put: #embeddedObject.
- a at: Tab asciiValue + 1 put: #tab.
- a at: CR asciiValue + 1 put: #cr.
- a at: EndOfRun put: #endOfRun.
- a at: CrossedX put: #crossedX.
- NilCondition := a copy.
- DefaultStopConditions := a copy.
- PaddedSpaceCondition := a copy.
- PaddedSpaceCondition at: Space asciiValue + 1 put: #paddedSpace.
- SpaceCondition := a copy.
- SpaceCondition at: Space asciiValue + 1 put: #space.
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>addCharToPresentation: (in category
'multilingual scanning') -----
- addCharToPresentation: char
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>addEmphasis: (in category 'private')
- addEmphasis: code
- "Set the bold-ital-under-strike emphasis."
- emphasisCode := emphasisCode bitOr: code!
Item was removed:
- ----- Method: MultiCharacterScanner>>addKern: (in category 'private')
- addKern: kernDelta
- "Set the current kern amount."
- kern := kern + kernDelta!
Item was removed:
- ----- Method:
MultiCharacterScanner>>basicScanCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanning') -----
- basicScanCharactersFrom: startIndex to: stopIndex in: sourceString rightX:
rightX stopConditions: stops kern: kernDelta
- "Primitive. This is the inner loop of text display--but see
- scanCharactersFrom: to:rightX: which would get the string,
- stopConditions and displaying from the instance. March through source
- String from startIndex to stopIndex. If any character is flagged with a
- non-nil entry in stops, then return the corresponding value. Determine
- width of each character from xTable, indexed by map.
- If dextX would exceed rightX, then return stops at: 258.
- Advance destX by the width of the character. If stopIndex has been
- reached, then return stops at: 257. Optional.
- See Object documentation whatIsAPrimitive."
- | ascii nextDestX char |
- <primitive: 103>
- lastIndex := startIndex.
- [lastIndex <= stopIndex]
whileTrue:[char := (sourceString at: lastIndex).ascii := char asciiValue + 1.(stops at: ascii) == nil ifFalse: [^stops at: ascii]."Note: The following is querying the font about the widthsince the primitive may have failed due to a non-trivialmapping of characters to glyphs or a non-existing xTable."nextDestX := destX + (font widthOf: char).nextDestX > rightX ifTrue: [^stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1].- lastIndex := stopIndex.
- ^stops at: EndOfRun!
Item was removed:
- ----- Method: MultiCharacterScanner>>columnBreak (in category 'scanning')
- columnBreak
- ^true!
Item was removed:
- ----- Method: MultiCharacterScanner>>combinableChar:for: (in category
'scanner methods') -----
- combinableChar: char for: prevEntity
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>embeddedObject (in category
'scanning') -----
- embeddedObject
- | savedIndex |
- savedIndex := lastIndex.
- text attributesAt: lastIndex do:[:attr|
attr anchoredMorph ifNotNil:["Following may look strange but logic gets reversed.If the morph fits on this line we're not done (return false for true)and if the morph won't fit we're done (return true for false)"(self placeEmbeddedObject: attr anchoredMorph) ifFalse:[^true]]].- lastIndex := savedIndex + 1. "for multiple(!!) embedded morphs"
- ^false!
Item was removed:
- ----- Method: MultiCharacterScanner>>handleIndentation (in category
'scanning') -----
- handleIndentation
- self indentationLevel timesRepeat: [
self plainTab]!Item was removed:
- ----- Method: MultiCharacterScanner>>indentationLevel (in category
'scanning') -----
- indentationLevel
- "return the number of tabs that are currently being placed at the
beginning of each line"
- ^indentationLevel ifNil:[0]!
Item was removed:
- ----- Method: MultiCharacterScanner>>indentationLevel: (in category
'scanning') -----
- indentationLevel: anInteger
- "set the number of tabs to put at the beginning of each line"
- indentationLevel := anInteger!
Item was removed:
- ----- Method: MultiCharacterScanner>>initialize (in category 'initialize')
- initialize
- destX := destY := leftMargin := 0.!
Item was removed:
- ----- Method: MultiCharacterScanner>>initializeFromParagraph:clippedBy:
(in category 'private') -----
- initializeFromParagraph: aParagraph clippedBy: clippingRectangle
- text := aParagraph text.
- textStyle := aParagraph textStyle.
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>initializeStringMeasurer (in category
'initialize') -----
- initializeStringMeasurer
- stopConditions := Array new: 258.
- stopConditions at: CrossedX put: #crossedX.
- stopConditions at: EndOfRun put: #endOfRun.
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>isBreakableAt:in:in: (in category
'scanner methods') -----
- isBreakableAt: index in: sourceString in: encodingClass
- ^ encodingClass isBreakableAt: index in: sourceString.
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>leadingTab (in category 'scanning')
- leadingTab
- "return true if only tabs lie to the left"
- line first to: lastIndex do:
[:i | (text at: i) == Tab ifFalse: [^ false]].- ^ true!
Item was removed:
- ----- Method: MultiCharacterScanner>>measureString:inFont:from:to: (in
category 'scanning') -----
- measureString: aString inFont: aFont from: startIndex to: stopIndex
- "WARNING: In order to use this method the receiver has to be set up using
#initializeStringMeasurer"
- destX := destY := lastIndex := 0.
- baselineY := aFont ascent.
- xTable := aFont xTable.
- font := aFont. " added Dec 03, 2004 "
- " map := aFont characterToGlyphMap."
- self scanCharactersFrom: startIndex to: stopIndex in: aString rightX:
999999 stopConditions: stopConditions kern: 0.
- ^destX!
Item was removed:
- ----- Method: MultiCharacterScanner>>placeEmbeddedObject: (in category
'scanning') -----
- placeEmbeddedObject: anchoredMorph
- "Place the anchoredMorph or return false if it cannot be placed.
- In any event, advance destX by its width."
- | w |
- "Workaround: The following should really use #textAnchorType"
- anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].
- destX := destX + (w := anchoredMorph width).
- (destX > rightMargin and: [(leftMargin + w) <= rightMargin])
ifTrue: ["Won't fit, but would on next line"^ false].- lastIndex := lastIndex + 1.
- self setFont. "Force recalculation of emphasis for next run"
- ^ true!
Item was removed:
- ----- Method: MultiCharacterScanner>>plainTab (in category 'scanning')
- plainTab
- "This is the basic method of adjusting destX for a tab."
- destX := (alignment == Justified and: [self leadingTab not])
ifTrue: "embedded tabs in justified text are weird"[destX + (textStyle tabWidth - (line justifiedTabDeltaFor: spaceCount))max: destX]
ifFalse:[textStyle nextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin]!Item was removed:
- ----- Method: MultiCharacterScanner>>registerBreakableIndex (in category
'multilingual scanning') -----
- registerBreakableIndex
- "Record left x and character index of the line-wrappable point.
- The default implementation here does nothing."
- ^ false.
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>removeLastCharFromPresentation (in
category 'multilingual scanning') -----
- removeLastCharFromPresentation
- !
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanning') -----
- scanCharactersFrom: startIndex to: stopIndex in: sourceString rightX:
rightX stopConditions: stops kern: kernDelta
- | startEncoding selector |
- (sourceString isByteString) ifTrue: [^ self basicScanCharactersFrom:
startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta.].
- (sourceString isWideString) ifTrue: [
startIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.selector := EncodedCharSet scanSelectorAt: startEncoding.^ self perform: selector withArguments: (Array with: startIndex with:stopIndex with: sourceString with: rightX with: stopConditions with: kernDelta).
- ].
- ^ stops at: EndOfRun
- !
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanJapaneseCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanner methods') -----
- scanJapaneseCharactersFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
- | ascii encoding f nextDestX maxAscii startEncoding |
- lastIndex := startIndex.
- lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:
EndOfRun].
- startEncoding := (sourceString at: startIndex) leadingChar.
- font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at:
1].
- ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])
ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at: 1].f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii."xTable := f xTable.maxAscii := xTable size - 2."spaceWidth := f widthOf: Space.- ] ifFalse: [
(font isMemberOf: HostFont) ifTrue: [f := font.maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].- ].
- [lastIndex <= stopIndex] whileTrue: [
"self halt."encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stopsat: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~ nil]) ifTrue: [^stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in: (EncodedCharSetcharsetAt: encoding)) ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at: lastIndex)).nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue: [^ stops at:CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.- ].
- lastIndex := stopIndex.
- ^ stops at: EndOfRun!
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:stopConditions:kern: (in category 'scanner methods') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
- | charCode encoding f maxAscii startEncoding combining combined
combiningIndex c |
- lastIndex := startIndex.
- lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:
EndOfRun].
- startEncoding := (sourceString at: startIndex) leadingChar.
- font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at:
1].
- ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])
ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at: 1].f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := font widthOf: Space.- ] ifFalse: [
maxAscii := font maxAscii.spaceWidth := font widthOf: Space.- ].
- combining := nil.
- [lastIndex <= stopIndex] whileTrue: [
charCode := (sourceString at: lastIndex) charCode.c := (sourceString at: lastIndex).combining ifNil: [combining := CombinedChar new.combining add: c.combiningIndex := lastIndex.lastIndex := lastIndex + 1.] ifNotNil: [(combining add: c) ifFalse: [self addCharToPresentation: (combined := combining combined).combining := CombinedChar new.combining add: c.charCode := combined charCode.encoding := combined leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1.(encoding = 0 and: [(stopConditions at: charCode + 1) ~~ nil])ifTrue: [
^ stops at: charCode + 1] ifFalse: [^ stops at: EndOfRun].].charCode > maxAscii ifTrue: [charCode := maxAscii].""(encoding = 0 and: [(stopConditions at: charCode + 1) ~~ nil]) ifTrue:[
combining ifNotNil: [self addCharToPresentation: (combining combined).].^ stops at: charCode + 1].(self isBreakableAt: lastIndex in: sourceString in: Latin1Environment)ifTrue: [
self registerBreakableIndex.].destX > rightX ifTrue: [destX ~= firstDestX ifTrue: [lastIndex := combiningIndex.self removeLastCharFromPresentation.^ stops at: CrossedX]].combiningIndex := lastIndex.lastIndex := lastIndex + 1.] ifTrue: [lastIndex := lastIndex + 1.numOfComposition := numOfComposition + 1.].].- ].
- lastIndex := stopIndex.
- combining ifNotNil: [
combined := combining combined.self addCharToPresentation: combined."assuming that there is always enough space for at least one character".destX := destX + (self widthOf: combined inFont: font).- ].
- ^ stops at: EndOfRun!
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanning') -----
- scanMultiCharactersFrom: startIndex to: stopIndex in: sourceString rightX:
rightX stopConditions: stops kern: kernDelta
- | ascii encoding f nextDestX maxAscii startEncoding |
- lastIndex := startIndex.
- lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:
EndOfRun].
- startEncoding := (sourceString at: startIndex) leadingChar.
- font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at:
1].
- ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])
ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at: 1].f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.- ] ifFalse: [
maxAscii := font maxAscii.- ].
- [lastIndex <= stopIndex] whileTrue: [
encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stopsat: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [ascii < stopConditions size and: [(stopConditionsat: ascii + 1) ~~ nil]]) ifTrue: [^ stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in: Latin1Environment)ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at: lastIndex)).nextDestX > rightX ifTrue: [destX ~= firstDestX ifTrue: [^ stops at:CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.- ].
- lastIndex := stopIndex.
- ^ stops at: EndOfRun!
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersR2LFrom:to:in:rightX:stopConditions:kern: (in category 'scanner methods') -----
- scanMultiCharactersR2LFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
- "Note that 'rightX' really means 'endX' in R2L context. Ie. rightX is
usually smaller than destX."
- | ascii encoding f nextDestX maxAscii startEncoding |
- lastIndex := startIndex.
- lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:
EndOfRun].
- startEncoding := (sourceString at: startIndex) leadingChar.
- font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at:
1].
- ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])
ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at: 1].f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.- ] ifFalse: [
maxAscii := font maxAscii.- ].
- [lastIndex <= stopIndex] whileTrue: [
encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stopsat: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~ nil]) ifTrue: [^stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in: Latin1Environment)ifTrue: [
self registerBreakableIndex.].nextDestX := destX - (font widthOf: (sourceString at: lastIndex)).nextDestX < rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX - kernDelta.lastIndex := lastIndex + 1.- ].
- lastIndex := stopIndex.
- ^ stops at: EndOfRun!
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanSimChineseCharactersFrom:to:in:rightX:stopConditions:kern: (in category 'scanner methods') -----
- scanSimChineseCharactersFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
- | ascii encoding f nextDestX maxAscii startEncoding |
- lastIndex := startIndex.
- lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:
EndOfRun].
- startEncoding := (sourceString at: startIndex) leadingChar.
- font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at:
1].
- ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])
ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at: 1].f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii."xTable := f xTable.maxAscii := xTable size - 2."spaceWidth := f widthOf: Space.- ] ifFalse: [
(font isMemberOf: HostFont) ifTrue: [f := font.maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].- ].
- [lastIndex <= stopIndex] whileTrue: [
"self halt."encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stopsat: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~ nil]) ifTrue: [^stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in: (EncodedCharSetcharsetAt: encoding)) ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at: lastIndex)).nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue: [^ stops at:CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.- ].
- lastIndex := stopIndex.
- ^ stops at: EndOfRun!
Item was removed:
- ----- Method: MultiCharacterScanner>>setActualFont: (in category
'private') -----
- setActualFont: aFont
- "Set the basal font to an isolated font reference."
- font := aFont!
Item was removed:
- ----- Method: MultiCharacterScanner>>setAlignment: (in category 'private')
- setAlignment: style
- alignment := style.
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>setConditionArray: (in category
'private') -----
- setConditionArray: aSymbol
- aSymbol == #paddedSpace ifTrue: [^stopConditions := PaddedSpaceCondition
"copy"].
- "aSymbol == #space ifTrue: [^stopConditions := SpaceCondition copy]."
- aSymbol == nil ifTrue: [^stopConditions := NilCondition "copy"].
- self error: 'undefined stopcondition for space character'.
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>setFont (in category 'private') -----
- setFont
- | priorFont |
- "Set the font and other emphasis."
- priorFont := font.
- text == nil ifFalse:[
emphasisCode := 0.kern := 0.indentationLevel := 0.alignment := textStyle alignment.font := nil.(text attributesAt: lastIndex forStyle: textStyle)do: [:att | att emphasizeScanner: self]].- font == nil ifTrue:
[self setFont: textStyle defaultFontIndex].- font := font emphasized: emphasisCode.
- priorFont ifNotNil: [destX := destX + priorFont descentKern].
- destX := destX - font descentKern.
- "NOTE: next statement should be removed when clipping works"
- leftMargin ifNotNil: [destX := destX max: leftMargin].
- kern := kern - font baseKern.
- "Install various parameters from the font."
- spaceWidth := font widthOf: Space.
- xTable := font xTable.
- " map := font characterToGlyphMap."
- stopConditions := DefaultStopConditions.!
Item was removed:
- ----- Method: MultiCharacterScanner>>setFont: (in category 'private')
- setFont: fontNumber
- "Set the font by number from the textStyle."
- self setActualFont: (textStyle fontAt: fontNumber)!
Item was removed:
- ----- Method: MultiCharacterScanner>>text:textStyle: (in category
'private') -----
- text: t textStyle: ts
- text := t.
- textStyle := ts!
Item was removed:
- ----- Method: MultiCharacterScanner>>textColor: (in category 'private')
- textColor: ignored
- "Overridden in DisplayScanner"!
Item was removed:
- ----- Method: MultiCharacterScanner>>wantsColumnBreaks: (in category
'initialize') -----
- wantsColumnBreaks: aBoolean
- wantsColumnBreaks := aBoolean!
Item was removed:
- ----- Method: MultiCharacterScanner>>widthOf:inFont: (in category
'multilingual scanning') -----
- widthOf: char inFont: aFont
- (char isMemberOf: CombinedChar) ifTrue: [
^ aFont widthOf: char base.- ] ifFalse: [
^ aFont widthOf: char.- ].
- !
Item was removed:
- MultiCharacterScanner subclass: #MultiCompositionScanner
- instanceVariableNames: 'spaceX lineHeight baseline breakableIndex
lineHeightAtBreak baselineAtBreak breakAtSpace lastWidth'
- classVariableNames: ''
- poolDictionaries: ''
- category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed:
- ----- Method: MultiCompositionScanner>>addCharToPresentation: (in category
'multilingual scanning') -----
- addCharToPresentation: char
- presentation nextPut: char.
- lastWidth := self widthOf: char inFont: font.
- destX := destX + lastWidth.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>columnBreak (in category 'stop
conditions') -----
- columnBreak
- "Answer true. Set up values for the text line interval currently being
- composed."
- line stop: lastIndex.
- presentationLine stop: lastIndex - numOfComposition.
- spaceX := destX.
- line paddingWidth: rightMargin - spaceX.
- presentationLine paddingWidth: rightMargin - spaceX.
- ^true!
Item was removed:
- ----- Method:
MultiCompositionScanner>>composeFrom:inRectangle:firstLine:leftSide:rightSide: (in category 'scanning') -----
- composeFrom: startIndex inRectangle: lineRectangle
- firstLine: firstLine leftSide: leftSide rightSide: rightSide
- "Answer an instance of TextLineInterval that represents the next line in
the paragraph."
- | runLength done stopCondition |
- "Set up margins"
- leftMargin := lineRectangle left.
- leftSide ifTrue: [leftMargin := leftMargin +
(firstLine ifTrue: [textStyle firstIndent]ifFalse: [textStyle restIndent])].- destX := spaceX := leftMargin.
- firstDestX := destX.
- rightMargin := lineRectangle right.
- rightSide ifTrue: [rightMargin := rightMargin - textStyle rightIndent].
- lastIndex := startIndex. "scanning sets last index"
- destY := lineRectangle top.
- lineHeight := baseline := 0. "Will be increased by setFont"
- self setStopConditions. "also sets font"
- runLength := text runLengthFor: startIndex.
- runStopIndex := (lastIndex := startIndex) + (runLength - 1).
- line := (TextLine start: lastIndex stop: 0 internalSpaces: 0
paddingWidth: 0)
rectangle: lineRectangle.- presentationLine := (TextLine start: lastIndex stop: 0 internalSpaces: 0
paddingWidth: 0)
rectangle: lineRectangle.- numOfComposition := 0.
- spaceCount := 0.
- self handleIndentation.
- leftMargin := destX.
- line leftMargin: leftMargin.
- presentationLine leftMargin: leftMargin.
- presentation := TextStream on: (Text fromString: (WideString new: text
size)).
- done := false.
- [done]
whileFalse:[stopCondition := self scanCharactersFrom: lastIndex to: runStopIndexin: text string rightX: rightMargin stopConditions: stopConditionskern: kern."See setStopConditions for stopping conditions for composing."(self perform: stopCondition)ifTrue: [presentationLine lineHeight: lineHeight + textStyle leadingbaseline: baseline + textStyle leading.^ line lineHeight: lineHeight + textStyle leadingbaseline: baseline + textStyle leading]]!Item was removed:
- ----- Method:
MultiCompositionScanner>>composeLine:fromCharacterIndex:inParagraph: (in category 'scanning') -----
- composeLine: lineIndex fromCharacterIndex: startIndex inParagraph:
aParagraph
- "Answer an instance of TextLineInterval that represents the next line in
the paragraph."
- | runLength done stopCondition |
- destX := spaceX := leftMargin := aParagraph
leftMarginForCompositionForLine: lineIndex.
- destY := 0.
- rightMargin := aParagraph rightMarginForComposition.
- leftMargin >= rightMargin ifTrue: [self error: 'No room between margins
to compose'].
- lastIndex := startIndex. "scanning sets last index"
- lineHeight := textStyle lineGrid. "may be increased by setFont:..."
- baseline := textStyle baseline.
- baselineY := destY + baseline.
- self setStopConditions. "also sets font"
- self handleIndentation.
- runLength := text runLengthFor: startIndex.
- runStopIndex := (lastIndex := startIndex) + (runLength - 1).
- line := TextLineInterval
start: lastIndexstop: 0internalSpaces: 0paddingWidth: 0.- presentationLine := TextLineInterval
start: lastIndexstop: 0internalSpaces: 0paddingWidth: 0.- numOfComposition := 0.
- presentation := TextStream on: (Text fromString: (WideString new: text
size)).
- spaceCount := 0.
- done := false.
- [done]
whileFalse:[stopCondition := self scanCharactersFrom: lastIndex to: runStopIndexin: text string rightX: rightMargin stopConditions: stopConditionskern: kern."See setStopConditions for stopping conditions for composing."(self perform: stopCondition)ifTrue: [presentationLine lineHeight: lineHeight + textStyle leadingbaseline: baseline + textStyle leading.^line lineHeight: lineHeight + textStyle leadingbaseline: baseline + textStyle leading]]!Item was removed:
- ----- Method: MultiCompositionScanner>>cr (in category 'stop conditions')
- cr
- "Answer true. Set up values for the text line interval currently being
- composed."
- line stop: lastIndex.
- presentationLine stop: lastIndex - numOfComposition.
- spaceX := destX.
- line paddingWidth: rightMargin - spaceX.
- presentationLine paddingWidth: rightMargin - spaceX.
- ^true!
Item was removed:
- ----- Method: MultiCompositionScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
- "There is a word that has fallen across the right edge of the composition
- rectangle. This signals the need for wrapping which is done to the last
- space that was encountered, as recorded by the space stop condition."
- (breakAtSpace) ifTrue: [
spaceCount >= 1 ifTrue:["The common case. First back off to the space at which we wrap."line stop: breakableIndex.presentationLine stop: breakableIndex - numOfComposition.lineHeight := lineHeightAtBreak.baseline := baselineAtBreak.spaceCount := spaceCount - 1.breakableIndex := breakableIndex - 1."Check to see if any spaces preceding the one at which we wrap.Double space after punctuation, most likely."[(spaceCount > 1 and: [(text at: breakableIndex) = Space])]whileTrue:[spaceCount := spaceCount - 1."Account for backing over a run which mightchange width of space."font := text fontAt: breakableIndex withStyle: textStyle.breakableIndex := breakableIndex - 1.spaceX := spaceX - (font widthOf: Space)].line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin - spaceX.presentationLine internalSpaces: spaceCount.line internalSpaces: spaceCount]ifFalse:["Neither internal nor trailing spaces -- almost never happens."lastIndex := lastIndex - 1.[destX <= rightMargin]whileFalse:[destX := destX - (font widthOf: (text at: lastIndex)).lastIndex := lastIndex - 1].spaceX := destX.line paddingWidth: rightMargin - destX.presentationLine paddingWidth: rightMargin - destX.presentationLine stop: (lastIndex max: line first).line stop: (lastIndex max: line first)].^true- ].
- (breakableIndex isNil or: [breakableIndex < line first]) ifTrue: [
"Any breakable point in this line. Just wrap last character."breakableIndex := lastIndex - 1.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.- ].
- "It wasn't a space, but anyway this is where we break the line."
- line stop: breakableIndex.
- presentationLine stop: breakableIndex.
- lineHeight := lineHeightAtBreak.
- baseline := baselineAtBreak.
- ^ true.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
- "Answer true if scanning has reached the end of the paragraph.
- Otherwise step conditions (mostly install potential new font) and answer
- false."
- | runLength |
- lastIndex = text size
- ifTrue: [line stop: lastIndex.
presentationLine stop: lastIndex - numOfComposition.spaceX := destX.line paddingWidth: rightMargin - destX.presentationLine paddingWidth: rightMargin - destX.^true]- ifFalse: [
"(text at: lastIndex) charCode = 32 ifTrue: [destX := destX +spaceWidth]."
runLength := (text runLengthFor: (lastIndex := lastIndex + 1)).runStopIndex := lastIndex + (runLength - 1).self setStopConditions.^false]- !
Item was removed:
- ----- Method: MultiCompositionScanner>>forParagraph: (in category
'intialize-release') -----
- forParagraph: aParagraph
- "Initialize the receiver for scanning the given paragraph."
- self
initializeFromParagraph: aParagraphclippedBy: aParagraph clippingRectangle.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>getPresentation (in category
'multilingual scanning') -----
- getPresentation
- ^ presentation contents.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>getPresentationLine (in category
'multilingual scanning') -----
- getPresentationLine
- ^ presentationLine.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>isBreakableAt:in:in: (in category
'multilingual scanning') -----
- isBreakableAt: index in: sourceString in: encodingClass
- ^ encodingClass isBreakableAt: index in: sourceString.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>placeEmbeddedObject: (in category
'stop conditions') -----
- placeEmbeddedObject: anchoredMorph
- | descent |
- "Workaround: The following should really use #textAnchorType"
- anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].
- (super placeEmbeddedObject: anchoredMorph) ifFalse: ["It doesn't fit"
"But if it's the first character then leave it here"lastIndex < line first ifFalse:[line stop: lastIndex-1.^ false]].- descent := lineHeight - baseline.
- lineHeight := lineHeight max: anchoredMorph height.
- baseline := lineHeight - descent.
- line stop: lastIndex.
- presentationLine stop: lastIndex - numOfComposition.
- ^ true!
Item was removed:
- ----- Method: MultiCompositionScanner>>presentation (in category
'accessing') -----
- presentation
- ^ presentation.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>presentationLine (in category
'accessing') -----
- presentationLine
- ^ presentationLine.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>registerBreakableIndex (in category
'multilingual scanning') -----
- registerBreakableIndex
- "Record left x and character index of the line-wrappable point.
- Used for wrap-around. Answer whether the character has crossed the
- right edge of the composition rectangle of the paragraph."
- (text at: lastIndex) = Character space ifTrue: [
breakAtSpace := true.spaceX := destX.spaceCount := spaceCount + 1.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.breakableIndex := lastIndex.destX > rightMargin ifTrue: [^self crossedX].- ] ifFalse: [
breakAtSpace := false.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.breakableIndex := lastIndex - 1.- ].
- ^ false.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>removeLastCharFromPresentation (in
category 'multilingual scanning') -----
- removeLastCharFromPresentation
- presentation ifNotNil: [
presentation position: presentation position - 1.- ].
- destX := destX - lastWidth.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>rightX (in category 'accessing')
- rightX
- "Meaningful only when a line has just been composed -- refers to the
- line most recently composed. This is a subtrefuge to allow for easy
- resizing of a composition rectangle to the width of the maximum line.
- Useful only when there is only one line in the form or when each line
- is terminated by a carriage return. Handy for sizing menus and lists."
- breakAtSpace ifTrue: [^ spaceX].
- ^ destX.
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>setActualFont: (in category
'scanning') -----
- setActualFont: aFont
- "Keep track of max height and ascent for auto lineheight"
- | descent |
- super setActualFont: aFont.
- "' ', lastIndex printString, ' ' displayAt: (lastIndex * 15)@0."
- lineHeight == nil
ifTrue: [descent := font descent.baseline := font ascent.lineHeight := baseline + descent]ifFalse: [descent := lineHeight - baseline max: font descent.baseline := baseline max: font ascent.lineHeight := lineHeight max: baseline + descent]!Item was removed:
- ----- Method: MultiCompositionScanner>>setFont (in category 'stop
conditions') -----
- setFont
- super setFont.
- breakAtSpace := false.
- wantsColumnBreaks == true ifTrue: [
stopConditions := stopConditions copy.stopConditions at: TextComposer characterForColumnBreak asciiValue + 1put: #columnBreak.
- ].
- !
Item was removed:
- ----- Method: MultiCompositionScanner>>setStopConditions (in category
'stop conditions') -----
- setStopConditions
- "Set the font and the stop conditions for the current run."
- self setFont!
Item was removed:
- ----- Method: MultiCompositionScanner>>tab (in category 'stop conditions')
- tab
- "Advance destination x according to tab settings in the paragraph's
- textStyle. Answer whether the character has crossed the right edge of
- the composition rectangle of the paragraph."
- destX := textStyle
nextTabXFrom: destX leftMargin: leftMargin rightMargin: rightMargin.- destX > rightMargin ifTrue: [^self crossedX].
- lastIndex := lastIndex + 1.
- ^false
- !
Item was removed:
- MultiCharacterScanner subclass: #MultiDisplayScanner
- instanceVariableNames: 'bitBlt lineY runX foregroundColor backgroundColor
fillBlt lineHeight paragraph paragraphColor morphicOffset ignoreColorChanges'
- classVariableNames: ''
- poolDictionaries: ''
- category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed:
- ----- Method: MultiDisplayScanner class>>defaultFont (in category
'queries') -----
- defaultFont
- ^ TextStyle defaultFont!
Item was removed:
- ----- Method: MultiDisplayScanner>>cr (in category 'stop conditions')
- cr
- "When a carriage return is encountered, simply increment the pointer
- into the paragraph."
- lastIndex := lastIndex + 1.
- ^false!
Item was removed:
- ----- Method: MultiDisplayScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
- "This condition will sometimes be reached 'legally' during display, when,
- for instance the space that caused the line to wrap actually extends over
- the right boundary. This character is allowed to display, even though it
- is technically outside or straddling the clipping ectangle since it is in
- the normal case not visible and is in any case appropriately clipped by
- the scanner."
- ^ true !
Item was removed:
- ----- Method: MultiDisplayScanner>>displayLine:offset:leftInRun: (in
category 'scanning') -----
- displayLine: textLine offset: offset leftInRun: leftInRun
- "The call on the primitive (scanCharactersFrom:to:in:rightX:) will be
interrupted according to an array of stop conditions passed to the scanner at which time the code to handle the stop condition is run and the call on the primitive continued until a stop condition returns true (which means the line has terminated). leftInRun is the # of characters left to scan in the current run; when 0, it is time to call setStopConditions."
- | done stopCondition nowLeftInRun startIndex string lastPos |
- line := textLine.
- morphicOffset := offset.
- lineY := line top + offset y.
- lineHeight := line lineHeight.
- rightMargin := line rightMargin + offset x.
- lastIndex := line first.
- leftInRun <= 0 ifTrue: [self setStopConditions].
- leftMargin := (line leftMarginForAlignment: alignment) + offset x.
- destX := runX := leftMargin.
- fillBlt == nil ifFalse:
["Not right"fillBlt destX: line left destY: lineYwidth: line width left height: lineHeight; copyBits].- lastIndex := line first.
- leftInRun <= 0
ifTrue: [nowLeftInRun := text runLengthFor: lastIndex]ifFalse: [nowLeftInRun := leftInRun].- baselineY := lineY + line baseline.
- destY := baselineY - font ascent.
- runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last.
- spaceCount := 0.
- done := false.
- string := text string.
- [done] whileFalse:[
startIndex := lastIndex.lastPos := destX@destY.stopCondition := self scanCharactersFrom: lastIndex to: runStopIndexin: string rightX: rightMargin stopConditions: stopConditionskern: kern.lastIndex >= startIndex ifTrue:[font displayString: string on: bitBltfrom: startIndex- "XXXX: The following is an interesting bug. All stopConditions exept
#endOfRun
have lastIndex past the last character displayed. #endOfRun sets it *on*the character.
If we display up until lastIndex then we will also display invisiblecharacters like
CR and tab. This problem should be fixed in the scanner (i.e., positionlastIndex
consistently) but I don't want to deal with the fallout right now so wekeep the
fix minimally invasive."to: (stopCondition == #endOfRun ifTrue:[lastIndex]ifFalse:[lastIndex-1])
at: lastPos kern: kern baselineY: baselineY]."see setStopConditions for stopping conditions for displaying."done := self perform: stopCondition."lastIndex > runStopIndex ifTrue: [done := true]."- ].
- ^ runStopIndex - lastIndex "Number of characters remaining in the
current run"!
Item was removed:
- ----- Method: MultiDisplayScanner>>displayLines:in:clippedBy: (in category
'MVC-compatibility') -----
- displayLines: linesInterval in: aParagraph clippedBy: visibleRectangle
- "The central display routine. The call on the primitive
- (scanCharactersFrom:to:in:rightX:) will be interrupted according to an
- array of stop conditions passed to the scanner at which time the code to
- handle the stop condition is run and the call on the primitive continued
- until a stop condition returns true (which means the line has
- terminated)."
- | runLength done stopCondition leftInRun startIndex string lastPos |
- "leftInRun is the # of characters left to scan in the current run;
when 0, it is time to call 'self setStopConditions'"- morphicOffset := 0@0.
- leftInRun := 0.
- self initializeFromParagraph: aParagraph clippedBy: visibleRectangle.
- ignoreColorChanges := false.
- paragraph := aParagraph.
- foregroundColor := paragraphColor := aParagraph foregroundColor.
- backgroundColor := aParagraph backgroundColor.
- aParagraph backgroundColor isTransparent
ifTrue: [fillBlt := nil]ifFalse: [fillBlt := bitBlt copy. "Blt to fill spaces, tabs, margins"fillBlt sourceForm: nil; sourceOrigin: 0@0.fillBlt fillColor: aParagraph backgroundColor].- rightMargin := aParagraph rightMarginForDisplay.
- lineY := aParagraph topAtLineIndex: linesInterval first.
- bitBlt destForm deferUpdatesIn: visibleRectangle while: [
linesInterval do:[:lineIndex |leftMargin := aParagraph leftMarginForDisplayForLine: lineIndexalignment: (alignment ifNil:[textStyle alignment]).
destX := (runX := leftMargin).line := aParagraph lines at: lineIndex.lineHeight := line lineHeight.fillBlt == nil ifFalse:[fillBlt destX: visibleRectangle left destY: lineYwidth: visibleRectangle width height: lineHeight; copyBits].lastIndex := line first.leftInRun <= 0ifTrue: [self setStopConditions. "also sets the font"leftInRun := text runLengthFor: line first].baselineY := lineY + line baseline.destY := baselineY - font ascent. "Should have happened in setFont"runLength := leftInRun.runStopIndex := lastIndex + (runLength - 1) min: line last.leftInRun := leftInRun - (runStopIndex - lastIndex + 1).spaceCount := 0.done := false.string := text string.self handleIndentation.[done] whileFalse:[startIndex := lastIndex.lastPos := destX@destY.stopCondition := self scanCharactersFrom: lastIndex to: runStopIndexin: string rightX: rightMargin stopConditions: stopConditionskern: kern.lastIndex >= startIndex ifTrue:[font displayString: string on: bitBltfrom: startIndex to: lastIndex at: lastPos kern: kern baselineY:baselineY].
"see setStopConditions for stopping conditions for displaying."done := self perform: stopCondition].fillBlt == nil ifFalse:[fillBlt destX: destX destY: lineY width: visibleRectangle right-destXheight: lineHeight; copyBits].
lineY := lineY + lineHeight]]!Item was removed:
- ----- Method: MultiDisplayScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
- "The end of a run in the display case either means that there is actually
- a change in the style (run code) to be associated with the string or the
- end of this line has been reached."
- | runLength |
- lastIndex = line last ifTrue: [^true].
- runX := destX.
- runLength := text runLengthFor: (lastIndex := lastIndex + 1).
- runStopIndex := lastIndex + (runLength - 1) min: line last.
- self setStopConditions.
- ^ false!
Item was removed:
- ----- Method: MultiDisplayScanner>>initializeFromParagraph:clippedBy: (in
category 'MVC-compatibility') -----
- initializeFromParagraph: aParagraph clippedBy: clippingRectangle
- super initializeFromParagraph: aParagraph clippedBy: clippingRectangle.
- bitBlt := BitBlt asGrafPort toForm: aParagraph destinationForm.
- bitBlt sourceX: 0; width: 0. "Init BitBlt so that the first call to a
primitive will not fail"
- bitBlt combinationRule: Form paint.
- bitBlt colorMap:
(Bitmap with: 0 "Assumes 1-bit deep fonts"with: (bitBlt destForm pixelValueFor: aParagraph foregroundColor)).- bitBlt clipRect: clippingRectangle.
- !
Item was removed:
- ----- Method: MultiDisplayScanner>>isBreakableAt:in:in: (in category
'multilingual scanning') -----
- isBreakableAt: index in: sourceString in: encodingClass
- ^ false.
- !
Item was removed:
- ----- Method: MultiDisplayScanner>>paddedSpace (in category 'stop
conditions') -----
- paddedSpace
- "Each space is a stop condition when the alignment is right justified.
- Padding must be added to the base width of the space according to
- which space in the line this space is and according to the amount of
- space that remained at the end of the line when it was composed."
- spaceCount := spaceCount + 1.
- destX := destX + spaceWidth + (line justifiedPadFor: spaceCount).
- lastIndex := lastIndex + 1.
- ^ false!
Item was removed:
- ----- Method: MultiDisplayScanner>>placeEmbeddedObject: (in category
'scanning') -----
- placeEmbeddedObject: anchoredMorph
- anchoredMorph relativeTextAnchorPosition ifNotNil:[
anchoredMorph position:anchoredMorph relativeTextAnchorPosition +(anchoredMorph owner textBounds origin x @ 0)- (0@morphicOffset y) + (0@lineY).^true- ].
- (super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false].
- anchoredMorph isMorph ifTrue: [
anchoredMorph position: ((destX - anchoredMorph width)@lineY) -morphicOffset
- ] ifFalse: [
destY := lineY.baselineY := lineY + anchoredMorph height..runX := destX.anchoredMorphdisplayOn: bitBlt destFormat: destX - anchoredMorph width @ destYclippingBox: bitBlt clipRect- ].
- ^ true!
Item was removed:
- ----- Method: MultiDisplayScanner>>plainTab (in category 'stop
conditions') -----
- plainTab
- | oldX |
- oldX := destX.
- super plainTab.
- fillBlt == nil ifFalse:
[fillBlt destX: oldX destY: destY width: destX - oldX height: fontheight; copyBits]!
Item was removed:
- ----- Method: MultiDisplayScanner>>presentationText: (in category
'private') -----
- presentationText: t
- text := t.
- !
Item was removed:
- ----- Method:
MultiDisplayScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:stopConditions:kern: (in category 'multilingual scanning') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
- | encoding f nextDestX maxAscii startEncoding char charValue |
- lastIndex := startIndex.
- lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:
EndOfRun].
- startEncoding := (sourceString at: startIndex) leadingChar.
- font ifNil: [font := (TextConstants at: #DefaultMultiStyle) fontArray at:
1].
- ((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])
ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at: 1].f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.- ] ifFalse: [
maxAscii := font maxAscii.- ].
- [lastIndex <= stopIndex] whileTrue: [
encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex - 1. ^ stopsat: EndOfRun].
char := (sourceString at: lastIndex).charValue := char charCode.charValue > maxAscii ifTrue: [charValue := maxAscii].(encoding = 0 and: [(stopConditions at: charValue + 1) ~~ nil]) ifTrue:[
^ stops at: charValue + 1].nextDestX := destX + (self widthOf: char inFont: font).nextDestX > rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.- ].
- lastIndex := stopIndex.
- ^ stops at: EndOfRun!
Item was removed:
- ----- Method: MultiDisplayScanner>>setDestForm: (in category 'private')
- setDestForm: df
- bitBlt setDestForm: df.!
Item was removed:
- ----- Method: MultiDisplayScanner>>setFont (in category 'private') -----
- setFont
- foregroundColor := paragraphColor.
- super setFont. "Sets font and emphasis bits, and maybe foregroundColor"
- font installOn: bitBlt foregroundColor: foregroundColor backgroundColor:
Color transparent.
- text ifNotNil:[
baselineY := lineY + line baseline.destY := baselineY - font ascent].- !
Item was removed:
- ----- Method: MultiDisplayScanner>>setPort: (in category 'private') -----
- setPort: aBitBlt
- "Install the BitBlt to use"
- bitBlt := aBitBlt.
- bitBlt sourceX: 0; width: 0. "Init BitBlt so that the first call to a
primitive will not fail"
- bitBlt sourceForm: nil. "Make sure font installation won't be confused"
- !
Item was removed:
- ----- Method: MultiDisplayScanner>>setStopConditions (in category 'stop
conditions') -----
- setStopConditions
- "Set the font and the stop conditions for the current run."
- self setFont.
- self setConditionArray: (alignment = Justified ifTrue: [#paddedSpace]).
- "
- alignment = Justified ifTrue: [
stopConditions == DefaultStopConditionsifTrue:[stopConditions := stopConditions copy].stopConditions at: Space asciiValue + 1 put: #paddedSpace]- "!
Item was removed:
- ----- Method: MultiDisplayScanner>>tab (in category 'stop conditions')
- tab
- self plainTab.
- lastIndex := lastIndex + 1.
- ^ false!
Item was removed:
- ----- Method:
MultiDisplayScanner>>text:textStyle:foreground:background:fillBlt:ignoreColorChanges: (in category 'private') -----
- text: t textStyle: ts foreground: foreColor background: backColor fillBlt:
blt ignoreColorChanges: shadowMode
- text := t.
- textStyle := ts.
- foregroundColor := paragraphColor := foreColor.
- (backgroundColor := backColor) isTransparent ifFalse:
[fillBlt := blt.fillBlt fillColor: backgroundColor].- ignoreColorChanges := shadowMode!
Item was removed:
- ----- Method: MultiDisplayScanner>>textColor: (in category 'private')
- textColor: textColor
- ignoreColorChanges ifTrue: [^ self].
- foregroundColor := textColor!
Item was removed:
- NewParagraph subclass: #MultiNewParagraph
- instanceVariableNames: 'presentationText presentationLines'
- classVariableNames: ''
- poolDictionaries: 'TextConstants'
- category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed:
- ----- Method: MultiNewParagraph>>displayOn:using:at: (in category
'fonts-display') -----
- displayOn: aCanvas using: displayScanner at: somePosition
- "Send all visible lines to the displayScanner for display"
- | visibleRectangle offset leftInRun line |
- visibleRectangle := aCanvas clipRect.
- offset := somePosition - positionWhenComposed.
- leftInRun := 0.
- (self lineIndexForPoint: visibleRectangle topLeft)
to: (self lineIndexForPoint: visibleRectangle bottomRight)do: [:i | line := lines at: i.self displaySelectionInLine: line on: aCanvas.line first <= line last ifTrue:[leftInRun := displayScanner displayLine: lineoffset: offset leftInRun: leftInRun]].- !
Item was removed:
- ----- Method: MultiNewParagraph>>displayOnTest:using:at: (in category
'fonts-display') -----
- displayOnTest: aCanvas using: displayScanner at: somePosition
- "Send all visible lines to the displayScanner for display"
- | visibleRectangle offset leftInRun line |
- (presentationText isNil or: [presentationLines isNil]) ifTrue: [
^ self displayOn: aCanvas using: displayScanner at: somePosition.- ].
- visibleRectangle := aCanvas clipRect.
- offset := somePosition - positionWhenComposed.
- leftInRun := 0.
- (self lineIndexForPoint: visibleRectangle topLeft)
to: (self lineIndexForPoint: visibleRectangle bottomRight)do: [:i | line := presentationLines at: i.self displaySelectionInLine: line on: aCanvas.line first <= line last ifTrue:[leftInRun := displayScanner displayLine: lineoffset: offset leftInRun: leftInRun]].- !
Item was removed:
- ----- Method:
MultiNewParagraph>>multiComposeLinesFrom:to:delta:into:priorLines:atY: (in category 'composition') -----
- multiComposeLinesFrom: start to: stop delta: delta into: lineColl
priorLines: priorLines
- atY: startingY
- "While the section from start to stop has changed, composition may ripple
all the way to the end of the text. However in a rectangular container, if we ever find a line beginning with the same character as before (ie corresponding to delta in the old lines), then we can just copy the old lines from there to the end of the container, with adjusted indices and y-values"
- | newResult composer presentationInfo |
- composer := MultiTextComposer new.
- presentationLines := nil.
- presentationText := nil.
- newResult := composer
multiComposeLinesFrom: startto: stopdelta: deltainto: lineCollpriorLines: priorLinesatY: startingYtextStyle: textStyletext: textcontainer: containerwantsColumnBreaks: wantsColumnBreaks == true.- lines := newResult first asArray.
- maxRightX := newResult second.
- presentationInfo := composer getPresentationInfo.
- presentationLines := presentationInfo first asArray.
- presentationText := presentationInfo second.
- "maxRightX printString displayAt: 0@0."
- ^maxRightX
- !
Item was removed:
- ----- Method: MultiNewParagraph>>presentationLines (in category
'accessing') -----
- presentationLines
- ^ presentationLines.
- !
Item was removed:
- ----- Method: MultiNewParagraph>>presentationText (in category
'accessing') -----
- presentationText
- ^ presentationText.
- !
Item was removed:
- TextComposer subclass: #MultiTextComposer
- instanceVariableNames: 'presentation presentationLines'
- classVariableNames: ''
- poolDictionaries: 'TextConstants'
- category: 'Etoys-Squeakland-Multilingual-Scanning'!
Item was removed:
- ----- Method: MultiTextComposer>>composeEachRectangleIn: (in category 'as
yet unclassified') -----
- composeEachRectangleIn: rectangles
- | myLine lastChar |
- 1 to: rectangles size do: [:i |
currCharIndex <= theText size ifFalse: [^false].myLine := scannercomposeFrom: currCharIndexinRectangle: (rectangles at: i)firstLine: isFirstLineleftSide: i=1rightSide: i=rectangles size.lines addLast: myLine.presentationLines addLast: scanner getPresentationLine.presentation ifNil: [presentation := scanner getPresentation]ifNotNil: [presentation := presentation, scanner getPresentation].actualHeight := actualHeight max: myLine lineHeight. "includes fontchanges"
currCharIndex := myLine last + 1.lastChar := theText at: myLine last.lastChar = Character cr ifTrue: [^#cr].wantsColumnBreaks ifTrue: [lastChar = TextComposer characterForColumnBreak ifTrue:[^#columnBreak].
].- ].
- ^false!
Item was removed:
- ----- Method: MultiTextComposer>>getPresentationInfo (in category 'as yet
unclassified') -----
- getPresentationInfo
- ^ Array with: presentationLines with: presentation.
- !
Item was removed:
- ----- Method:
MultiTextComposer>>multiComposeLinesFrom:to:delta:into:priorLines:atY:textStyle:text:container:wantsColumnBreaks: (in category 'as yet unclassified') -----
- multiComposeLinesFrom: argStart to: argStop delta: argDelta into:
argLinesCollection priorLines: argPriorLines atY: argStartY textStyle: argTextStyle text: argText container: argContainer wantsColumnBreaks: argWantsColumnBreaks
- wantsColumnBreaks := argWantsColumnBreaks.
- lines := argLinesCollection.
- presentationLines := argLinesCollection copy.
- theTextStyle := argTextStyle.
- theText := argText.
- theContainer := argContainer.
- deltaCharIndex := argDelta.
- currCharIndex := startCharIndex := argStart.
- stopCharIndex := argStop.
- prevLines := argPriorLines.
- currentY := argStartY.
- defaultLineHeight := theTextStyle lineGrid.
- maxRightX := theContainer left.
- possibleSlide := stopCharIndex < theText size and: [theContainer
isMemberOf: Rectangle].
- nowSliding := false.
- prevIndex := 1.
- scanner := MultiCompositionScanner new text: theText textStyle:
theTextStyle.
- scanner wantsColumnBreaks: wantsColumnBreaks.
- isFirstLine := true.
- self composeAllLines.
- isFirstLine ifTrue: ["No space in container or empty text"
selfaddNullLineWithIndex: startCharIndexandRectangle: (theContainer topLeft extent: 0@defaultLineHeight)- ] ifFalse: [
self fixupLastLineIfCR- ].
- ^{lines asArray. maxRightX}
- !
Exactly! Multilingual features have been merged back into regular classes, so we don't need a fork anymore.
2017-10-05 21:03 GMT+02:00 H. Hirzel hannes.hirzel@gmail.com:
Note regarding the thread 'MorphicProject subclass: #EtoysProject'
Answer 'NewParagraph' when asked for a replacement class for 'MultiNewParagraph'
On Sat, 15 Apr 2017 13:45:33 0000, commits@source.squeak.org commits@source.squeak.org wrote:
Nicolas Cellier uploaded a new version of EToys to project The Trunk: http://source.squeak.org/trunk/EToys-nice.292.mcz
==================== Summary ====================
Name: EToys-nice.292 Author: nice Time: 15 April 2017, 3:44:39.800437 pm UUID: 39acfe15-791f-41c6-8aad-d679664643e7 Ancestors: EToys-eem.291
Remove the Multi*Scanner, MultiNewParagraph, MultiComposer because they
have
no additional value.
=============== Diff against EToys-eem.291 ===============
Item was changed: SystemOrganization addCategory: #'Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-CustomEvents'! SystemOrganization addCategory: #'Etoys-Experimental'! SystemOrganization addCategory: #'Etoys-Outliner'! SystemOrganization addCategory: #'Etoys-Protocols'! SystemOrganization addCategory: #'Etoys-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Scripting Tiles'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Base'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Connectors'! SystemOrganization addCategory: #'Etoys-Squeakland-EToys-Kedama'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Calendar'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Debugger'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Help'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Input'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting
Tiles'!
SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-
SpeechBubbles'!
SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Tile
Scriptors'!
SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-External'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Text'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Intersection'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Simplification'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Triangulation'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-AdditionalMorphs'! SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-Charts'!
SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Postscript Filters'! SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-WebCam'!
SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-Widgets'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Basic'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Books'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Components'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Demo'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Experimental'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Games'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Games-Chess'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-GeeMail'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Mentoring'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Navigators'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PartsBin'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PDA'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Windows'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Worlds'! SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-Languages'!
- SystemOrganization addCategory: #'Etoys-Squeakland-
Multilingual-Scanning'!
SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-TextConversion'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Formatter'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-
HTML-Forms'!
SystemOrganization addCategory: #'Etoys-Squeakland-Network-
HTML-Parser'!
SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Parser Entities'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Tokenizer'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-MIME'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-TelNet WordNet'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-UI'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-Url'! SystemOrganization addCategory: #'Etoys-Squeakland-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Interface'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Ogg'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Scores'! SystemOrganization addCategory: #'Etoys-Squeakland-ST80-Morphic'! SystemOrganization addCategory: #'Etoys-Squeakland-SUnit'! SystemOrganization addCategory: #'Etoys-Squeakland-Sugar'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Clipboard-Extended'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Compiler'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Exceptions Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Changes'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Explorer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-File Contents Browser'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Process
Browser'!
SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ObjectVectors'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTreeTransformer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTree-AttributeDefinition'! SystemOrganization addCategory: #'Etoys-Stacks'! SystemOrganization addCategory: #'Etoys-StarSqueak'! SystemOrganization addCategory: #'Etoys-Support'! SystemOrganization addCategory: #'Etoys-Tests'! SystemOrganization addCategory: #'Etoys-Tile Scriptors'! SystemOrganization addCategory: #'Etoys-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-SISS-
Serialization'!
SystemOrganization addCategory: #'Etoys-OLPC-Display'! SystemOrganization addCategory: #'Etoys-ReleaseBuilder'! SystemOrganization addCategory: #'Etoys-UserInterfaceTheme'!
Item was removed:
- ----- Method:
GrafPort>>displayScannerForMulti:foreground:background:
ignoreColorChanges:
(in category '*Etoys-Squeakland-accessing') -----
- displayScannerForMulti: para foreground: foreColor background:
backColor
ignoreColorChanges: shadowMode
((para isMemberOf: MultiNewParagraph) or: [para text stringisByteString]) ifTrue: [
^ (MultiDisplayScanner new text: para presentationTexttextStyle: para
textStyle
foreground: foreColor background:backColor fillBlt: self
ignoreColorChanges: shadowMode)setPort: self clone].^ (DisplayScanner new text: para text textStyle: para textStyleforeground: foreColor background: backColorfillBlt: self
ignoreColorChanges: shadowMode)setPort: self clone- !
Item was removed:
- MultiCharacterScanner subclass: #MultiCanvasCharacterScanner
instanceVariableNames: 'canvas fillBlt foregroundColor runX lineY'classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>canvas: (in category
'accessing') -----
- canvas: aCanvas
"set the canvas to draw on"canvas ifNotNil: [ self inform: 'initializing twice!!' ].canvas := aCanvas!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>cr (in category 'stop
conditions') -----
- cr
"When a carriage return is encountered, simply increment thepointer
into the paragraph."lastIndex := lastIndex + 1.^false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"This condition will sometimes be reached 'legally' duringdisplay, when,
for instance the space that caused the line to wrap actuallyextends over
the right boundary. This character is allowed to display, eventhough it
is technically outside or straddling the clipping ectangle sinceit is in
the normal case not visible and is in any case appropriatelyclipped by
the scanner.""self fillLeading."^ true !Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>
displayLine:offset:leftInRun:
(in category 'scanning') -----
- displayLine: textLine offset: offset leftInRun: leftInRun
| nowLeftInRun done startLoc startIndex stopCondition |"largely copied from DisplayScanner's routine"line := textLine.foregroundColor ifNil: [ foregroundColor := Color black ].leftMargin := (line leftMarginForAlignment: alignment) + offset x.rightMargin := line rightMargin + offset x.lineY := line top + offset y.lastIndex := textLine first.leftInRun <= 0ifTrue: [self setStopConditions. "also sets the font"nowLeftInRun := text runLengthFor:lastIndex]
ifFalse: [nowLeftInRun := leftInRun].runX := destX := leftMargin.runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last.spaceCount := 0.done := false.[done] whileFalse: ["remember where this portion of the line starts"startLoc := destX@destY.startIndex := lastIndex."find the end of this portion of the line"stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX:rightMargin stopConditions: stopConditions
kern: kern "displaying:false".
"display that portion of the line"canvas drawString: text stringfrom: startIndex to: lastIndexat: startLocfont: fontcolor: foregroundColor."handle the stop condition"done := self perform: stopCondition].^runStopIndex - lastIndex!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>doesDisplaying (in category
'private') -----
- doesDisplaying
^false "it doesn't do displaying using copyBits"!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"The end of a run in the display case either means that there isactually
a change in the style (run code) to be associated with the stringor the
end of this line has been reached."| runLength |lastIndex = line last ifTrue: [^true].runX := destX.runLength := text runLengthFor: (lastIndex := lastIndex + 1).runStopIndex := lastIndex + (runLength - 1) min: line last.self setStopConditions.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>paddedSpace (in category
'stop
conditions') -----
- paddedSpace
"Each space is a stop condition when the alignment is rightjustified.
Padding must be added to the base width of the space according towhich space in the line this space is and according to the amountof
space that remained at the end of the line when it was composed."destX := destX + spaceWidth + (line justifiedPadFor: spaceCount).lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>setFont (in category
'private')
- setFont
foregroundColor ifNil: [foregroundColor := Color black].super setFont.baselineY := lineY + line baseline.destY := baselineY - font ascent.!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>setStopConditions (in
category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (textStyle alignment = Justified ifTrue:[#paddedSpace]).
- !
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>tab (in category 'stop
conditions') -----
- tab
destX := (alignment == Justified and: [self leadingTab not])ifTrue: "imbedded tabs in justified text are weird"[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStyle nextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin].lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>textColor: (in category
'private') -----
- textColor: color
foregroundColor := color!Item was removed:
- MultiCharacterScanner subclass: #MultiCharacterBlockScanner
instanceVariableNames: 'characterPoint characterIndex lastCharacterlastCharacterExtent lastSpaceOrTabExtent nextLeftMargin specialWidth'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>buildCharacterBlockIn: (in
category 'private') -----
- buildCharacterBlockIn: para
| lineIndex runLength lineStop done stopCondition |"handle nullText"(para numberOfLines = 0 or: [text size = 0])ifTrue: [^ CharacterBlock new stringIndex: 1 "like beingoff end of
string"
text: para texttopLeft: (paraleftMarginForDisplayForLine: 1 alignment: (alignment
ifNil:[textStyle alignment]))
@ paracompositionRectangle top
extent: 0 @ textStyle lineGrid]."find the line"lineIndex := para lineIndexOfTop: characterPoint y.destY := para topAtLineIndex: lineIndex.line := para lines at: lineIndex.rightMargin := para rightMarginForDisplay.(lineIndex = para numberOfLines and:[(destY + line lineHeight) < characterPoint y])ifTrue: ["if beyond lastLine, force search to lastcharacter"
self characterPointSetX:rightMargin]
ifFalse: [characterPoint y < (paracompositionRectangle) top
ifTrue: ["force search tofirst line"
characterPoint := (para compositionRectangle) topLeft].
characterPoint x > rightMarginifTrue: [selfcharacterPointSetX: rightMargin]].
destX := (leftMargin := para leftMarginForDisplayForLine: lineIndexalignment: (alignment ifNil:[textStyle alignment])).
nextLeftMargin := para leftMarginForDisplayForLine: lineIndex+1alignment: (alignment ifNil:[textStyle alignment]).
lastIndex := line first.self setStopConditions. "also sets font"runLength := (text runLengthFor: line first).characterIndex == nilifTrue: [lineStop := line last "characterBlockAtPoint"]ifFalse: [lineStop := characterIndex"characterBlockForIndex"].
(runStopIndex := lastIndex + (runLength - 1)) > lineStopifTrue: [runStopIndex := lineStop].lastCharacterExtent := 0 @ line lineHeight.spaceCount := 0. done := false.self handleIndentation.[done]whileFalse:[stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX: characterPoint xstopConditions: stopConditions kern: kern."see setStopConditions for stopping conditions for character block operations."self lastCharacterExtentSetX: (font widthOf: (text at: lastIndex)).(self perform: stopCondition) ifTrue:[characterIndex == nilifTrue: ["characterBlockAtPoint"^ CharacterBlock new stringIndex:lastIndex text: text
topLeft: characterPoint +(font descentKern @ 0)
extent:lastCharacterExtent]
ifFalse: ["characterBlockForIndex"^ CharacterBlock new stringIndex:lastIndex text: text
topLeft: characterPoint +((font descentKern) - kern @ 0)
extent:lastCharacterExtent]]]!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockAtPoint:in:
(in
category 'scanning') -----
- characterBlockAtPoint: aPoint in: aParagraph
"Answer a CharacterBlock for character in aParagraph at pointaPoint. It
is assumed that aPoint has been transformed into coordinatesappropriate
to the text's destination form rectangle and the compositionrectangle."
self initializeFromParagraph: aParagraph clippedBy: aParagraphclippingRectangle.
characterPoint := aPoint.^self buildCharacterBlockIn: aParagraph!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockAtPoint:index:
in:
(in category 'scanning') -----
- characterBlockAtPoint: aPoint index: index in: textLine
"This method is the Morphic characterBlock finder. It combinesMVC's characterBlockAtPoint:, -ForIndex:, andbuildCharcterBlock:in:"
| runLength lineStop done stopCondition |line := textLine.rightMargin := line rightMargin.lastIndex := line first.self setStopConditions. "also sets font"characterIndex := index. " == nil means scanning for point"characterPoint := aPoint.(characterPoint isNil or: [characterPoint y > line bottom])ifTrue: [characterPoint := line bottomRight].(text isEmpty or: [(characterPoint y < line top or:[characterPoint x <
line left])
or: [characterIndex notNil and:[characterIndex < line first]]])
ifTrue: [^ (CharacterBlock new stringIndex: line firsttext: text
topLeft: line leftMargin@line topextent: 0 @ textStyle lineGrid)
textLine: line].destX := leftMargin := line leftMarginForAlignment: alignment.destY := line top.runLength := text runLengthFor: line first.characterIndexifNotNil: [lineStop := characterIndex "scanning forindex"]
ifNil: [lineStop := line last "scanning for point"].runStopIndex := lastIndex + (runLength - 1) min: lineStop.lastCharacterExtent := 0 @ line lineHeight.spaceCount := 0.done := false.[done] whileFalse:[stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX: characterPoint xstopConditions: stopConditions kern: kern."see setStopConditions for stopping conditions forcharacter block
operations."
self lastCharacterExtentSetX: (specialWidthifNil: [font widthOf: (text at: lastIndex)]ifNotNil: [specialWidth]).(self perform: stopCondition) ifTrue:[characterIndexifNil: ["Result for characterBlockAtPoint:"
(stopCondition ~~ #cr and: [lastIndex == line last
and: [ aPoint x >((characterPoint x) + (lastCharacterExtent x / 2))
]])
ifTrue: [ "Correctfor right half of last character in line"
^(CharacterBlock new stringIndex: lastIndex + 1
text: text
topLeft: characterPoint + (lastCharacterExtent x @ 0) + (fontdescentKern @ 0)
extent: 0 @ lastCharacterExtent y)
textLine: line ].
^ (CharacterBlock newstringIndex: lastIndex
text: texttopLeft: characterPoint + (font descentKern @ 0)
extent:lastCharacterExtent - (font baseKern @ 0))
textLine: line]
ifNotNil: ["Result forcharacterBlockForIndex: "
^ (CharacterBlock newstringIndex: characterIndex
text: texttopLeft: characterPoint + ((font descentKern) - kern @
extent:lastCharacterExtent)
textLine: line]]]!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockForIndex:in:
(in
category 'scanning') -----
- characterBlockForIndex: targetIndex in: aParagraph
"Answer a CharacterBlock for character in aParagraph attargetIndex. The
coordinates in the CharacterBlock will be appropriate to theintersection
of the destination form rectangle and the composition rectangle."selfinitializeFromParagraph: aParagraphclippedBy: aParagraph clippingRectangle.characterIndex := targetIndex.characterPoint :=aParagraph rightMarginForDisplay @(aParagraph topAtLineIndex:(aParagraph lineIndexOfCharacterIndex:characterIndex)).
^self buildCharacterBlockIn: aParagraph!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterPointSetX: (in
category
'private') -----
- characterPointSetX: xVal
characterPoint := xVal @ characterPoint y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>cr (in category 'stop
conditions') -----
- cr
"Answer a CharacterBlock that specifies the current location ofthe mouse
relative to a carriage return stop condition that has just beenencountered. The ParagraphEditor convention is to denoteselections by
CharacterBlocks, sometimes including the carriage return (cursoris at
the end) and sometimes not (cursor is in the middle of the text)."((characterIndex ~= niland: [characterIndex > text size])or: [(line last = text size)and: [(destY + line lineHeight) <characterPoint y]])
ifTrue: ["When off end of string, give data for nextcharacter"
destY := destY + line lineHeight.baselineY := line lineHeight.lastCharacter := nil.characterPoint := (nextLeftMargin ifNil:[leftMargin]) @ destY.
lastIndex := lastIndex + 1.self lastCharacterExtentSetX: 0.^ true].lastCharacter := CR.characterPoint := destX @ destY.self lastCharacterExtentSetX: rightMargin - destX.^true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"Text display has wrapping. The scanner just found a characterpast the x
location of the cursor. We know that the cursor is pointing at acharacter
or before one."| leadingTab currentX |characterIndex == nil ifFalse: ["If the last character of the last line is a space,and it crosses the right margin, then locatingthe character block after it is impossible without thishack."
characterIndex > text size ifTrue: [lastIndex := characterIndex.characterPoint := (nextLeftMargin ifNil:[leftMargin]) @ (destY + line
lineHeight).
^true]].characterPoint x <= (destX + (lastCharacterExtent x // 2))ifTrue: [lastCharacter := (text at: lastIndex).characterPoint := destX @ destY.^true].lastIndex >= line lastifTrue: [lastCharacter := (text at: line last).characterPoint := destX @ destY.^true]."Pointing past middle of a character, return the next character."lastIndex := lastIndex + 1.lastCharacter := text at: lastIndex.currentX := destX + lastCharacterExtent x + kern.self lastCharacterExtentSetX: (font widthOf: lastCharacter).characterPoint := currentX @ destY.lastCharacter = Space ifFalse: [^ true]."Yukky if next character is space or tab."alignment = Justified ifTrue:[self lastCharacterExtentSetX:(lastCharacterExtent x + (linejustifiedPadFor: (spaceCount + 1))).
^ true].true ifTrue: [^ true]."NOTE: I find no value to the following code, and so havedefeated it -
DI"
"See tabForDisplay for illumination on the following awfulness."leadingTab := true.line first to: lastIndex - 1 do:[:index | (text at: index) ~= Tab ifTrue: [leadingTab :=false]].
(alignment ~= Justified or: [leadingTab])ifTrue: [self lastCharacterExtentSetX: (textStylenextTabXFrom: currentX
leftMargin: leftMarginrightMargin: rightMargin) -
currentX]ifFalse: [self lastCharacterExtentSetX:(((currentX + (textStyle
tabWidth -
(linejustifiedTabDeltaFor: spaceCount))) -
currentX) max: 0)].^ true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"Before arriving at the cursor location, the selection hasencountered an
end of run. Answer false if the selection continues, trueotherwise. Set
up indexes for building the appropriate CharacterBlock."| runLength lineStop |(((characterIndex ~~ nil and:[runStopIndex < characterIndex and: [runStopIndex < textsize]])
or: [characterIndex == nil and: [lastIndex <line last]]) or: [
((lastIndex < line last)and: [((text at: lastIndex) leadingChar ~=(text at: lastIndex+1)
leadingChar)
and: [lastIndex ~=characterIndex]])])
ifTrue: ["We're really at the end of a real run."runLength := (text runLengthFor:(lastIndex := lastIndex + 1)).
characterIndex ~~ nilifTrue: [lineStop :=characterIndex "scanning for index"]
ifFalse: [lineStop := linelast "scanning for point"].
(runStopIndex := lastIndex + (runLength -1)) > lineStop
ifTrue: [runStopIndex :=lineStop].
self setStopConditions.^false].lastCharacter := text at: lastIndex.characterPoint := destX @ destY.((lastCharacter = Space and: [alignment = Justified])or: [lastCharacter = Tab and: [lastSpaceOrTabExtentnotNil]])
ifTrue: [lastCharacterExtent := lastSpaceOrTabExtent].characterIndex ~~ nilifTrue: ["If scanning for an index and we've stopped onthat index,
then we back destX off by the width of thecharacter stopped on
(it will be pointing at the right side ofthe character) and return"
runStopIndex = characterIndexifTrue: [self characterPointSetX:destX - lastCharacterExtent x.
^true]."Otherwise the requested index was greaterthan the length of the
string. Return string size + 1 as index,indicate further that off
the
string by setting character to nil and theextent to 0."
lastIndex := lastIndex + 1.lastCharacter := nil.self lastCharacterExtentSetX: 0.^true]."Scanning for a point and either off the end of the line or offthe end
of the string."
runStopIndex = text sizeifTrue: ["off end of string"lastIndex := lastIndex + 1.lastCharacter := nil.self lastCharacterExtentSetX: 0.^true]."just off end of line without crossing x"lastIndex := lastIndex + 1.^true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>indentationLevel: (in
category
'scanning') -----
- indentationLevel: anInteger
super indentationLevel: anInteger.nextLeftMargin := leftMargin.indentationLevel timesRepeat: [nextLeftMargin := textStyle nextTabXFrom: nextLeftMarginleftMargin: leftMarginrightMargin: rightMargin]!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>lastCharacterExtentSetX: (in
category 'private') -----
- lastCharacterExtentSetX: xVal
lastCharacterExtent := xVal @ lastCharacterExtent y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>lastSpaceOrTabExtentSetX:
(in
category 'private') -----
- lastSpaceOrTabExtentSetX: xVal
lastSpaceOrTabExtent := xVal @ lastSpaceOrTabExtent y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>paddedSpace (in category
'stop
conditions') -----
- paddedSpace
"When the line is justified, the spaces will not be the same as thefont's
space character. A padding of extra space must be considered intrying
to find which character the cursor is pointing at. Answer whetherthe
scanning has crossed the cursor."| pad |pad := 0.spaceCount := spaceCount + 1.pad := line justifiedPadFor: spaceCount.lastSpaceOrTabExtent := lastCharacterExtent copy.self lastSpaceOrTabExtentSetX: spaceWidth + pad.(destX + lastSpaceOrTabExtent x) >= characterPoint xifTrue: [lastCharacterExtent := lastSpaceOrTabExtent copy.^self crossedX].lastIndex := lastIndex + 1.destX := destX + lastSpaceOrTabExtent x.^ false- !
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>placeEmbeddedObject: (in
category 'scanning') -----
- placeEmbeddedObject: anchoredMorph
"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false].specialWidth := anchoredMorph width.^ true!Item was removed:
- ----- Method:
MultiCharacterBlockScanner>>scanMultiCharactersCombiningFr
om:to:in:rightX:stopConditions:kern:
(in category 'scanning') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| encoding f nextDestX maxAscii startEncoding char charValue |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
char := (sourceString at: lastIndex).charValue := char charCode.charValue > maxAscii ifTrue: [charValue := maxAscii].(encoding = 0 and: [(stopConditions at: charValue + 1) ~~nil]) ifTrue:
[
^ stops at: charValue + 1].nextDestX := destX + (self widthOf: char inFont: font).nextDestX > rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>setFont (in category 'stop
conditions') -----
- setFont
specialWidth := nil.super setFont!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>setStopConditions (in
category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (alignment = Justified ifTrue:[#paddedSpace]).
- !
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>tab (in category 'stop
conditions') -----
- tab
| currentX |currentX := (alignment == Justified and: [self leadingTab not])ifTrue: "imbedded tabs in justified text are weird"[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStylenextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin].lastSpaceOrTabExtent := lastCharacterExtent copy.self lastSpaceOrTabExtentSetX: (currentX - destX max: 0).currentX >= characterPoint xifTrue:[lastCharacterExtent := lastSpaceOrTabExtent copy.^ self crossedX].destX := currentX.lastIndex := lastIndex + 1.^false!Item was removed:
- Object subclass: #MultiCharacterScanner
instanceVariableNames: 'destX lastIndex xTable destYstopConditions text
textStyle alignment leftMargin rightMargin font line runStopIndex
spaceCount
spaceWidth emphasisCode kern indentationLevel wantsColumnBreaks
presentation
presentationLine numOfComposition baselineY firstDestX'
classVariableNames: 'DefaultStopConditions NilConditionPaddedSpaceCondition SpaceCondition'
poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCharacterScanner class>>initialize (in category
'class
initialization') -----
- initialize
- "
MultiCharacterScanner initialize- "
| a |a := Array new: 258.a at: 1 + 1 put: #embeddedObject.a at: Tab asciiValue + 1 put: #tab.a at: CR asciiValue + 1 put: #cr.a at: EndOfRun put: #endOfRun.a at: CrossedX put: #crossedX.NilCondition := a copy.DefaultStopConditions := a copy.PaddedSpaceCondition := a copy.PaddedSpaceCondition at: Space asciiValue + 1 put: #paddedSpace.SpaceCondition := a copy.SpaceCondition at: Space asciiValue + 1 put: #space.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>addCharToPresentation: (in
category
'multilingual scanning') -----
- addCharToPresentation: char
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>addEmphasis: (in category
'private')
- addEmphasis: code
"Set the bold-ital-under-strike emphasis."emphasisCode := emphasisCode bitOr: code!Item was removed:
- ----- Method: MultiCharacterScanner>>addKern: (in category 'private')
- addKern: kernDelta
"Set the current kern amount."kern := kern + kernDelta!Item was removed:
- ----- Method:
MultiCharacterScanner>>basicScanCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- basicScanCharactersFrom: startIndex to: stopIndex in: sourceString
rightX:
rightX stopConditions: stops kern: kernDelta
"Primitive. This is the inner loop of text display--but seescanCharactersFrom: to:rightX: which would get the string,stopConditions and displaying from the instance. March throughsource
String from startIndex to stopIndex. If any character is flaggedwith a
non-nil entry in stops, then return the corresponding value.Determine
width of each character from xTable, indexed by map.If dextX would exceed rightX, then return stops at: 258.Advance destX by the width of the character. If stopIndex has beenreached, then return stops at: 257. Optional.See Object documentation whatIsAPrimitive."| ascii nextDestX char |<primitive: 103>lastIndex := startIndex.[lastIndex <= stopIndex]whileTrue:[char := (sourceString at: lastIndex).ascii := char asciiValue + 1.(stops at: ascii) == nil ifFalse: [^stops at:ascii].
"Note: The following is querying the font aboutthe width
since the primitive may have failed due to anon-trivial
mapping of characters to glyphs or a non-existingxTable."
nextDestX := destX + (font widthOf: char).nextDestX > rightX ifTrue: [^stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1].lastIndex := stopIndex.^stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterScanner>>columnBreak (in category
'scanning')
- columnBreak
^true!Item was removed:
- ----- Method: MultiCharacterScanner>>combinableChar:for: (in category
'scanner methods') -----
- combinableChar: char for: prevEntity
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>embeddedObject (in category
'scanning') -----
- embeddedObject
| savedIndex |savedIndex := lastIndex.text attributesAt: lastIndex do:[:attr|attr anchoredMorph ifNotNil:["Following may look strange but logic getsreversed.
If the morph fits on this line we're not done(return false for true)
and if the morph won't fit we're done (return truefor false)"
(self placeEmbeddedObject: attr anchoredMorph)ifFalse:[^true]]].
lastIndex := savedIndex + 1. "for multiple(!!) embedded morphs"^false!Item was removed:
- ----- Method: MultiCharacterScanner>>handleIndentation (in category
'scanning') -----
- handleIndentation
self indentationLevel timesRepeat: [self plainTab]!Item was removed:
- ----- Method: MultiCharacterScanner>>indentationLevel (in category
'scanning') -----
- indentationLevel
"return the number of tabs that are currently being placed at thebeginning of each line"
^indentationLevel ifNil:[0]!Item was removed:
- ----- Method: MultiCharacterScanner>>indentationLevel: (in category
'scanning') -----
- indentationLevel: anInteger
"set the number of tabs to put at the beginning of each line"indentationLevel := anInteger!Item was removed:
- ----- Method: MultiCharacterScanner>>initialize (in category
'initialize')
- initialize
destX := destY := leftMargin := 0.!Item was removed:
- ----- Method: MultiCharacterScanner>>initializeFromParagraph:
clippedBy:
(in category 'private') -----
- initializeFromParagraph: aParagraph clippedBy: clippingRectangle
text := aParagraph text.textStyle := aParagraph textStyle.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>initializeStringMeasurer (in
category
'initialize') -----
- initializeStringMeasurer
stopConditions := Array new: 258.stopConditions at: CrossedX put: #crossedX.stopConditions at: EndOfRun put: #endOfRun.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>isBreakableAt:in:in: (in category
'scanner methods') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ encodingClass isBreakableAt: index in: sourceString.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>leadingTab (in category
'scanning')
- leadingTab
"return true if only tabs lie to the left"line first to: lastIndex do:[:i | (text at: i) == Tab ifFalse: [^ false]].^ true!Item was removed:
- ----- Method: MultiCharacterScanner>>measureString:inFont:from:to: (in
category 'scanning') -----
- measureString: aString inFont: aFont from: startIndex to: stopIndex
"WARNING: In order to use this method the receiver has to be setup using
#initializeStringMeasurer"
destX := destY := lastIndex := 0.baselineY := aFont ascent.xTable := aFont xTable.font := aFont. " added Dec 03, 2004 "- " map := aFont characterToGlyphMap."
self scanCharactersFrom: startIndex to: stopIndex in: aStringrightX:
999999 stopConditions: stopConditions kern: 0.
^destX!Item was removed:
- ----- Method: MultiCharacterScanner>>placeEmbeddedObject: (in category
'scanning') -----
- placeEmbeddedObject: anchoredMorph
"Place the anchoredMorph or return false if it cannot be placed.In any event, advance destX by its width."| w |"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].destX := destX + (w := anchoredMorph width).(destX > rightMargin and: [(leftMargin + w) <= rightMargin])ifTrue: ["Won't fit, but would on next line"^ false].lastIndex := lastIndex + 1.self setFont. "Force recalculation of emphasis for next run"^ true!Item was removed:
- ----- Method: MultiCharacterScanner>>plainTab (in category 'scanning')
- plainTab
"This is the basic method of adjusting destX for a tab."destX := (alignment == Justified and: [self leadingTab not])ifTrue: "embedded tabs in justified text are weird"[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStyle nextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin]!Item was removed:
- ----- Method: MultiCharacterScanner>>registerBreakableIndex (in
category
'multilingual scanning') -----
- registerBreakableIndex
"Record left x and character index of the line-wrappable point.The default implementation here does nothing."^ false.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>removeLastCharFromPresentation
(in
category 'multilingual scanning') -----
- removeLastCharFromPresentation
- !
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- scanCharactersFrom: startIndex to: stopIndex in: sourceString rightX:
rightX stopConditions: stops kern: kernDelta
| startEncoding selector |(sourceString isByteString) ifTrue: [^ selfbasicScanCharactersFrom:
startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta.].
(sourceString isWideString) ifTrue: [startIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^stops at:
EndOfRun].
startEncoding := (sourceString at: startIndex)leadingChar.
selector := EncodedCharSet scanSelectorAt: startEncoding.^ self perform: selector withArguments: (Array with:startIndex with:
stopIndex with: sourceString with: rightX with: stopConditions with: kernDelta).
].^ stops at: EndOfRun- !
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanJapaneseCharactersFrom:to:
in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanJapaneseCharactersFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii."xTable := f xTable.maxAscii := xTable size - 2."spaceWidth := f widthOf: Space.] ifFalse: [(font isMemberOf: HostFont) ifTrue: [f := font.maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].].[lastIndex <= stopIndex] whileTrue: ["self halt."encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:(EncodedCharSet
charsetAt: encoding)) ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue: [^stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:
stopConditions:kern:
(in category 'scanner methods') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| charCode encoding f maxAscii startEncoding combining combinedcombiningIndex c |
lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := font widthOf: Space.] ifFalse: [maxAscii := font maxAscii.spaceWidth := font widthOf: Space.].combining := nil.[lastIndex <= stopIndex] whileTrue: [charCode := (sourceString at: lastIndex) charCode.c := (sourceString at: lastIndex).combining ifNil: [combining := CombinedChar new.combining add: c.combiningIndex := lastIndex.lastIndex := lastIndex + 1.] ifNotNil: [(combining add: c) ifFalse: [self addCharToPresentation: (combined :=combining combined).
combining := CombinedChar new.combining add: c.charCode := combined charCode.encoding := combined leadingChar.encoding ~= startEncoding ifTrue:[lastIndex := lastIndex - 1.
(encoding = 0 and:[(stopConditions at: charCode + 1) ~~ nil])
ifTrue: [
^ stops at: charCode + 1] ifFalse: [^ stops at: EndOfRun].].charCode > maxAscii ifTrue: [charCode :=maxAscii].
""(encoding = 0 and: [(stopConditions at:charCode + 1) ~~ nil]) ifTrue:
[
combining ifNotNil: [selfaddCharToPresentation: (combining combined).
].^ stops at: charCode + 1].(self isBreakableAt: lastIndex in:sourceString in: Latin1Environment)
ifTrue: [
self registerBreakableIndex.].destX > rightX ifTrue: [destX ~= firstDestX ifTrue: [lastIndex :=combiningIndex.
selfremoveLastCharFromPresentation.
^ stops at: CrossedX]].combiningIndex := lastIndex.lastIndex := lastIndex + 1.] ifTrue: [lastIndex := lastIndex + 1.numOfComposition := numOfComposition + 1.].].].lastIndex := stopIndex.combining ifNotNil: [combined := combining combined.self addCharToPresentation: combined."assuming that there is always enough space for at leastone character".
destX := destX + (self widthOf: combined inFont: font).].^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- scanMultiCharactersFrom: startIndex to: stopIndex in: sourceString
rightX:
rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [ascii < stopConditions size and:[(stopConditions
at: ascii + 1) ~~ nil]]) ifTrue: [^ stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:Latin1Environment)
ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [destX ~= firstDestX ifTrue: [^stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersR2LFrom:to:
in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanMultiCharactersR2LFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
"Note that 'rightX' really means 'endX' in R2L context. Ie.rightX is
usually smaller than destX."
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:Latin1Environment)
ifTrue: [
self registerBreakableIndex.].nextDestX := destX - (font widthOf: (sourceString at:lastIndex)).
nextDestX < rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX - kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanSimChineseCharactersFrom:
to:in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanSimChineseCharactersFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii."xTable := f xTable.maxAscii := xTable size - 2."spaceWidth := f widthOf: Space.] ifFalse: [(font isMemberOf: HostFont) ifTrue: [f := font.maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].].[lastIndex <= stopIndex] whileTrue: ["self halt."encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:(EncodedCharSet
charsetAt: encoding)) ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue: [^stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterScanner>>setActualFont: (in category
'private') -----
- setActualFont: aFont
"Set the basal font to an isolated font reference."font := aFont!Item was removed:
- ----- Method: MultiCharacterScanner>>setAlignment: (in category
'private')
- setAlignment: style
alignment := style.!Item was removed:
- ----- Method: MultiCharacterScanner>>setConditionArray: (in category
'private') -----
- setConditionArray: aSymbol
aSymbol == #paddedSpace ifTrue: [^stopConditions :=PaddedSpaceCondition
"copy"].
"aSymbol == #space ifTrue: [^stopConditions := SpaceConditioncopy]."
aSymbol == nil ifTrue: [^stopConditions := NilCondition "copy"].self error: 'undefined stopcondition for space character'.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>setFont (in category 'private')
- setFont
| priorFont |"Set the font and other emphasis."priorFont := font.text == nil ifFalse:[emphasisCode := 0.kern := 0.indentationLevel := 0.alignment := textStyle alignment.font := nil.(text attributesAt: lastIndex forStyle: textStyle)do: [:att | att emphasizeScanner: self]].font == nil ifTrue:[self setFont: textStyle defaultFontIndex].font := font emphasized: emphasisCode.priorFont ifNotNil: [destX := destX + priorFont descentKern].destX := destX - font descentKern."NOTE: next statement should be removed when clipping works"leftMargin ifNotNil: [destX := destX max: leftMargin].kern := kern - font baseKern."Install various parameters from the font."spaceWidth := font widthOf: Space.xTable := font xTable.- " map := font characterToGlyphMap."
stopConditions := DefaultStopConditions.!Item was removed:
- ----- Method: MultiCharacterScanner>>setFont: (in category 'private')
- setFont: fontNumber
"Set the font by number from the textStyle."self setActualFont: (textStyle fontAt: fontNumber)!Item was removed:
- ----- Method: MultiCharacterScanner>>text:textStyle: (in category
'private') -----
- text: t textStyle: ts
text := t.textStyle := ts!Item was removed:
- ----- Method: MultiCharacterScanner>>textColor: (in category
'private')
- textColor: ignored
"Overridden in DisplayScanner"!Item was removed:
- ----- Method: MultiCharacterScanner>>wantsColumnBreaks: (in category
'initialize') -----
- wantsColumnBreaks: aBoolean
wantsColumnBreaks := aBoolean!Item was removed:
- ----- Method: MultiCharacterScanner>>widthOf:inFont: (in category
'multilingual scanning') -----
- widthOf: char inFont: aFont
(char isMemberOf: CombinedChar) ifTrue: [^ aFont widthOf: char base.] ifFalse: [^ aFont widthOf: char.].- !
Item was removed:
- MultiCharacterScanner subclass: #MultiCompositionScanner
instanceVariableNames: 'spaceX lineHeight baseline breakableIndexlineHeightAtBreak baselineAtBreak breakAtSpace lastWidth'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCompositionScanner>>addCharToPresentation: (in
category
'multilingual scanning') -----
- addCharToPresentation: char
presentation nextPut: char.lastWidth := self widthOf: char inFont: font.destX := destX + lastWidth.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>columnBreak (in category 'stop
conditions') -----
- columnBreak
"Answer true. Set up values for the text line interval currentlybeing
composed."line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.spaceX := destX.line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin - spaceX.^true!Item was removed:
- ----- Method:
MultiCompositionScanner>>composeFrom:inRectangle:
firstLine:leftSide:rightSide:
(in category 'scanning') -----
- composeFrom: startIndex inRectangle: lineRectangle
firstLine: firstLine leftSide: leftSide rightSide: rightSide"Answer an instance of TextLineInterval that represents the nextline in
the paragraph."
| runLength done stopCondition |"Set up margins"leftMargin := lineRectangle left.leftSide ifTrue: [leftMargin := leftMargin +(firstLine ifTrue:[textStyle firstIndent]
ifFalse:[textStyle restIndent])].
destX := spaceX := leftMargin.firstDestX := destX.rightMargin := lineRectangle right.rightSide ifTrue: [rightMargin := rightMargin - textStylerightIndent].
lastIndex := startIndex. "scanning sets last index"destY := lineRectangle top.lineHeight := baseline := 0. "Will be increased by setFont"self setStopConditions. "also sets font"runLength := text runLengthFor: startIndex.runStopIndex := (lastIndex := startIndex) + (runLength - 1).line := (TextLine start: lastIndex stop: 0 internalSpaces: 0paddingWidth: 0)
rectangle: lineRectangle.presentationLine := (TextLine start: lastIndex stop: 0internalSpaces: 0
paddingWidth: 0)
rectangle: lineRectangle.numOfComposition := 0.spaceCount := 0.self handleIndentation.leftMargin := destX.line leftMargin: leftMargin.presentationLine leftMargin: leftMargin.presentation := TextStream on: (Text fromString: (WideString new:text
size)).
done := false.[done]whileFalse:[stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: text string rightX: rightMarginstopConditions: stopConditions
kern: kern."See setStopConditions for stopping conditions forcomposing."
(self perform: stopCondition)ifTrue: [presentationLine lineHeight:lineHeight + textStyle leading
baseline: baseline
- textStyle leading.
^ line lineHeight:lineHeight + textStyle leading
baseline: baseline
- textStyle leading]]!
Item was removed:
- ----- Method:
MultiCompositionScanner>>composeLine:fromCharacterIndex:inParagraph: (in category 'scanning') -----
- composeLine: lineIndex fromCharacterIndex: startIndex inParagraph:
aParagraph
"Answer an instance of TextLineInterval that represents the nextline in
the paragraph."
| runLength done stopCondition |destX := spaceX := leftMargin := aParagraphleftMarginForCompositionForLine: lineIndex.
destY := 0.rightMargin := aParagraph rightMarginForComposition.leftMargin >= rightMargin ifTrue: [self error: 'No room betweenmargins
to compose'].
lastIndex := startIndex. "scanning sets last index"lineHeight := textStyle lineGrid. "may be increased bysetFont:..."
baseline := textStyle baseline.baselineY := destY + baseline.self setStopConditions. "also sets font"self handleIndentation.runLength := text runLengthFor: startIndex.runStopIndex := (lastIndex := startIndex) + (runLength - 1).line := TextLineIntervalstart: lastIndexstop: 0internalSpaces: 0paddingWidth: 0.presentationLine := TextLineIntervalstart: lastIndexstop: 0internalSpaces: 0paddingWidth: 0.numOfComposition := 0.presentation := TextStream on: (Text fromString: (WideString new:text
size)).
spaceCount := 0.done := false.[done]whileFalse:[stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: text string rightX: rightMarginstopConditions: stopConditions
kern: kern."See setStopConditions for stopping conditions forcomposing."
(self perform: stopCondition)ifTrue: [presentationLine lineHeight:lineHeight + textStyle leading
baseline: baseline
- textStyle leading.
^line lineHeight:lineHeight + textStyle leading
baseline: baseline
- textStyle leading]]!
Item was removed:
- ----- Method: MultiCompositionScanner>>cr (in category 'stop
conditions')
- cr
"Answer true. Set up values for the text line interval currentlybeing
composed."line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.spaceX := destX.line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin - spaceX.^true!Item was removed:
- ----- Method: MultiCompositionScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"There is a word that has fallen across the right edge of thecomposition
rectangle. This signals the need for wrapping which is done to thelast
space that was encountered, as recorded by the space stopcondition."
(breakAtSpace) ifTrue: [spaceCount >= 1 ifTrue:["The common case. First back off to the space atwhich we wrap."
line stop: breakableIndex.presentationLine stop: breakableIndex -numOfComposition.
lineHeight := lineHeightAtBreak.baseline := baselineAtBreak.spaceCount := spaceCount - 1.breakableIndex := breakableIndex - 1."Check to see if any spaces preceding the one atwhich we wrap.
Double space after punctuation, mostlikely."
[(spaceCount > 1 and: [(text at: breakableIndex) =Space])]
whileTrue:[spaceCount := spaceCount - 1."Account for backing over a runwhich might
change width of space."font := text fontAt:breakableIndex withStyle: textStyle.
breakableIndex := breakableIndex -
spaceX := spaceX - (font widthOf:Space)].
line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin -spaceX.
presentationLine internalSpaces: spaceCount.line internalSpaces: spaceCount]ifFalse:["Neither internal nor trailing spaces -- almostnever happens."
lastIndex := lastIndex - 1.[destX <= rightMargin]whileFalse:[destX := destX - (font widthOf:(text at: lastIndex)).
lastIndex := lastIndex - 1].spaceX := destX.line paddingWidth: rightMargin - destX.presentationLine paddingWidth: rightMargin - destX.presentationLine stop: (lastIndex max: line first).line stop: (lastIndex max: line first)].^true].(breakableIndex isNil or: [breakableIndex < line first]) ifTrue: ["Any breakable point in this line. Just wrap lastcharacter."
breakableIndex := lastIndex - 1.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.]."It wasn't a space, but anyway this is where we break the line."line stop: breakableIndex.presentationLine stop: breakableIndex.lineHeight := lineHeightAtBreak.baseline := baselineAtBreak.^ true.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"Answer true if scanning has reached the end of the paragraph.Otherwise step conditions (mostly install potential new font) andanswer
false."| runLength |lastIndex = text sizeifTrue: [line stop: lastIndex.presentationLine stop: lastIndex -numOfComposition.
spaceX := destX.line paddingWidth: rightMargin - destX.presentationLine paddingWidth: rightMargin - destX.^true]ifFalse: ["(text at: lastIndex) charCode = 32 ifTrue: [destX:= destX +
spaceWidth]."
runLength := (text runLengthFor: (lastIndex :=lastIndex + 1)).
runStopIndex := lastIndex + (runLength - 1).self setStopConditions.^false]- !
Item was removed:
- ----- Method: MultiCompositionScanner>>forParagraph: (in category
'intialize-release') -----
- forParagraph: aParagraph
"Initialize the receiver for scanning the given paragraph."selfinitializeFromParagraph: aParagraphclippedBy: aParagraph clippingRectangle.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>getPresentation (in category
'multilingual scanning') -----
- getPresentation
^ presentation contents.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>getPresentationLine (in
category
'multilingual scanning') -----
- getPresentationLine
^ presentationLine.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>isBreakableAt:in:in: (in
category
'multilingual scanning') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ encodingClass isBreakableAt: index in: sourceString.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>placeEmbeddedObject: (in
category
'stop conditions') -----
- placeEmbeddedObject: anchoredMorph
| descent |"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: ["It doesn'tfit"
"But if it's the first character then leave it here"lastIndex < line first ifFalse:[line stop: lastIndex-1.^ false]].descent := lineHeight - baseline.lineHeight := lineHeight max: anchoredMorph height.baseline := lineHeight - descent.line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.^ true!Item was removed:
- ----- Method: MultiCompositionScanner>>presentation (in category
'accessing') -----
- presentation
^ presentation.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>presentationLine (in category
'accessing') -----
- presentationLine
^ presentationLine.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>registerBreakableIndex (in
category
'multilingual scanning') -----
- registerBreakableIndex
"Record left x and character index of the line-wrappable point.Used for wrap-around. Answer whether the character has crossed theright edge of the composition rectangle of the paragraph."(text at: lastIndex) = Character space ifTrue: [breakAtSpace := true.spaceX := destX.spaceCount := spaceCount + 1.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.breakableIndex := lastIndex.destX > rightMargin ifTrue: [^self crossedX].] ifFalse: [breakAtSpace := false.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.breakableIndex := lastIndex - 1.].^ false.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>removeLastCharFromPresentation
(in
category 'multilingual scanning') -----
- removeLastCharFromPresentation
presentation ifNotNil: [presentation position: presentation position - 1.].destX := destX - lastWidth.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>rightX (in category
'accessing')
- rightX
"Meaningful only when a line has just been composed -- refers tothe
line most recently composed. This is a subtrefuge to allow for easyresizing of a composition rectangle to the width of the maximumline.
Useful only when there is only one line in the form or when eachline
is terminated by a carriage return. Handy for sizing menus andlists."
breakAtSpace ifTrue: [^ spaceX].^ destX.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>setActualFont: (in category
'scanning') -----
- setActualFont: aFont
"Keep track of max height and ascent for auto lineheight"| descent |super setActualFont: aFont."' ', lastIndex printString, ' ' displayAt: (lastIndex *15)@0."
lineHeight == nilifTrue: [descent := font descent.baseline := font ascent.lineHeight := baseline + descent]ifFalse: [descent := lineHeight - baseline max: fontdescent.
baseline := baseline max: font ascent.lineHeight := lineHeight max: baseline +descent]!
Item was removed:
- ----- Method: MultiCompositionScanner>>setFont (in category 'stop
conditions') -----
- setFont
super setFont.breakAtSpace := false.wantsColumnBreaks == true ifTrue: [stopConditions := stopConditions copy.stopConditions at: TextComposer characterForColumnBreakasciiValue + 1
put: #columnBreak.
].- !
Item was removed:
- ----- Method: MultiCompositionScanner>>setStopConditions (in category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont!Item was removed:
- ----- Method: MultiCompositionScanner>>tab (in category 'stop
conditions')
- tab
"Advance destination x according to tab settings in the paragraph'stextStyle. Answer whether the character has crossed the right edgeof
the composition rectangle of the paragraph."destX := textStylenextTabXFrom: destX leftMargin: leftMarginrightMargin: rightMargin.
destX > rightMargin ifTrue: [^self crossedX].lastIndex := lastIndex + 1.^false- !
Item was removed:
- MultiCharacterScanner subclass: #MultiDisplayScanner
instanceVariableNames: 'bitBlt lineY runX foregroundColorbackgroundColor
fillBlt lineHeight paragraph paragraphColor morphicOffset ignoreColorChanges'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiDisplayScanner class>>defaultFont (in category
'queries') -----
- defaultFont
^ TextStyle defaultFont!Item was removed:
- ----- Method: MultiDisplayScanner>>cr (in category 'stop conditions')
- cr
"When a carriage return is encountered, simply increment thepointer
into the paragraph."lastIndex := lastIndex + 1.^false!Item was removed:
- ----- Method: MultiDisplayScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"This condition will sometimes be reached 'legally' duringdisplay, when,
for instance the space that caused the line to wrap actuallyextends over
the right boundary. This character is allowed to display, eventhough it
is technically outside or straddling the clipping ectangle sinceit is in
the normal case not visible and is in any case appropriatelyclipped by
the scanner."^ true !Item was removed:
- ----- Method: MultiDisplayScanner>>displayLine:offset:leftInRun: (in
category 'scanning') -----
- displayLine: textLine offset: offset leftInRun: leftInRun
"The call on the primitive (scanCharactersFrom:to:in:rightX:)will be
interrupted according to an array of stop conditions passed to the
scanner
at which time the code to handle the stop condition is run and the call
on
the primitive continued until a stop condition returns true (which means
the
line has terminated). leftInRun is the # of characters left to scan in
the
current run; when 0, it is time to call setStopConditions."
| done stopCondition nowLeftInRun startIndex string lastPos |line := textLine.morphicOffset := offset.lineY := line top + offset y.lineHeight := line lineHeight.rightMargin := line rightMargin + offset x.lastIndex := line first.leftInRun <= 0 ifTrue: [self setStopConditions].leftMargin := (line leftMarginForAlignment: alignment) + offset x.destX := runX := leftMargin.fillBlt == nil ifFalse:["Not right"fillBlt destX: line left destY: lineYwidth: line width left height: lineHeight;copyBits].
lastIndex := line first.leftInRun <= 0ifTrue: [nowLeftInRun := text runLengthFor: lastIndex]ifFalse: [nowLeftInRun := leftInRun].baselineY := lineY + line baseline.destY := baselineY - font ascent.runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last.spaceCount := 0.done := false.string := text string.[done] whileFalse:[startIndex := lastIndex.lastPos := destX@destY.stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: string rightX:rightMargin stopConditions: stopConditions
kern: kern.lastIndex >= startIndex ifTrue:[font displayString: string on: bitBltfrom: startIndex"XXXX: The following is an interesting bug. All stopConditionsexept
#endOfRun
have lastIndex past the last character displayed.#endOfRun sets it *on*
the character.
If we display up until lastIndex then we will also displayinvisible
characters like
CR and tab. This problem should be fixed in the scanner(i.e., position
lastIndex
consistently) but I don't want to deal with the falloutright now so we
keep the
fix minimally invasive."to: (stopCondition == #endOfRunifTrue:[lastIndex]
ifFalse:[lastIndex-1])
at: lastPos kern: kern baselineY:baselineY].
"see setStopConditions for stopping conditions fordisplaying."
done := self perform: stopCondition."lastIndex > runStopIndex ifTrue: [done := true]."].^ runStopIndex - lastIndex "Number of characters remaining in thecurrent run"!
Item was removed:
- ----- Method: MultiDisplayScanner>>displayLines:in:clippedBy: (in
category
'MVC-compatibility') -----
- displayLines: linesInterval in: aParagraph clippedBy: visibleRectangle
"The central display routine. The call on the primitive(scanCharactersFrom:to:in:rightX:) will be interrupted accordingto an
array of stop conditions passed to the scanner at which time thecode to
handle the stop condition is run and the call on the primitivecontinued
until a stop condition returns true (which means the line hasterminated)."| runLength done stopCondition leftInRun startIndex string lastPos|
"leftInRun is the # of characters left to scan in the current run;when 0, it is time to call 'self setStopConditions'"morphicOffset := 0@0.leftInRun := 0.self initializeFromParagraph: aParagraph clippedBy:visibleRectangle.
ignoreColorChanges := false.paragraph := aParagraph.foregroundColor := paragraphColor := aParagraph foregroundColor.backgroundColor := aParagraph backgroundColor.aParagraph backgroundColor isTransparentifTrue: [fillBlt := nil]ifFalse: [fillBlt := bitBlt copy. "Blt to fill spaces,tabs, margins"
fillBlt sourceForm: nil; sourceOrigin: 0@0.fillBlt fillColor: aParagraphbackgroundColor].
rightMargin := aParagraph rightMarginForDisplay.lineY := aParagraph topAtLineIndex: linesInterval first.bitBlt destForm deferUpdatesIn: visibleRectangle while: [linesInterval do:[:lineIndex |leftMargin := aParagraphleftMarginForDisplayForLine: lineIndex
alignment: (alignment ifNil:[textStyle alignment]).
destX := (runX := leftMargin).line := aParagraph lines at: lineIndex.lineHeight := line lineHeight.fillBlt == nil ifFalse:[fillBlt destX: visibleRectangle leftdestY: lineY
width: visibleRectangle widthheight: lineHeight; copyBits].
lastIndex := line first.leftInRun <= 0ifTrue: [self setStopConditions. "alsosets the font"
leftInRun := textrunLengthFor: line first].
baselineY := lineY + line baseline.destY := baselineY - font ascent. "Should havehappened in setFont"
runLength := leftInRun.runStopIndex := lastIndex + (runLength - 1) min:line last.
leftInRun := leftInRun - (runStopIndex - lastIndex
- 1).
spaceCount := 0.done := false.string := text string.self handleIndentation.[done] whileFalse:[startIndex := lastIndex.lastPos := destX@destY.stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: string rightX:rightMargin stopConditions: stopConditions
kern: kern.lastIndex >= startIndex ifTrue:[font displayString: string on:bitBlt
from: startIndex to:lastIndex at: lastPos kern: kern baselineY:
baselineY].
"see setStopConditions for stoppingconditions for displaying."
done := self perform: stopCondition].fillBlt == nil ifFalse:[fillBlt destX: destX destY: lineY width:visibleRectangle right-destX
height: lineHeight; copyBits].
lineY := lineY + lineHeight]]!Item was removed:
- ----- Method: MultiDisplayScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"The end of a run in the display case either means that there isactually
a change in the style (run code) to be associated with the stringor the
end of this line has been reached."| runLength |lastIndex = line last ifTrue: [^true].runX := destX.runLength := text runLengthFor: (lastIndex := lastIndex + 1).runStopIndex := lastIndex + (runLength - 1) min: line last.self setStopConditions.^ false!Item was removed:
- ----- Method: MultiDisplayScanner>>initializeFromParagraph:clippedBy:
(in
category 'MVC-compatibility') -----
- initializeFromParagraph: aParagraph clippedBy: clippingRectangle
super initializeFromParagraph: aParagraph clippedBy:clippingRectangle.
bitBlt := BitBlt asGrafPort toForm: aParagraph destinationForm.bitBlt sourceX: 0; width: 0. "Init BitBlt so that the firstcall to a
primitive will not fail"
bitBlt combinationRule: Form paint.bitBlt colorMap:(Bitmap with: 0 "Assumes 1-bit deep fonts"with: (bitBlt destForm pixelValueFor:aParagraph foregroundColor)).
bitBlt clipRect: clippingRectangle.- !
Item was removed:
- ----- Method: MultiDisplayScanner>>isBreakableAt:in:in: (in category
'multilingual scanning') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ false.- !
Item was removed:
- ----- Method: MultiDisplayScanner>>paddedSpace (in category 'stop
conditions') -----
- paddedSpace
"Each space is a stop condition when the alignment is rightjustified.
Padding must be added to the base width of the space according towhich space in the line this space is and according to the amountof
space that remained at the end of the line when it was composed."spaceCount := spaceCount + 1.destX := destX + spaceWidth + (line justifiedPadFor: spaceCount).lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiDisplayScanner>>placeEmbeddedObject: (in category
'scanning') -----
- placeEmbeddedObject: anchoredMorph
anchoredMorph relativeTextAnchorPosition ifNotNil:[anchoredMorph position:anchoredMorph relativeTextAnchorPosition +(anchoredMorph owner textBounds origin x @ 0)- (0@morphicOffset y) + (0@lineY).^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false].anchoredMorph isMorph ifTrue: [anchoredMorph position: ((destX - anchoredMorphwidth)@lineY) -
morphicOffset
] ifFalse: [destY := lineY.baselineY := lineY + anchoredMorph height..runX := destX.anchoredMorphdisplayOn: bitBlt destFormat: destX - anchoredMorph width @ destYclippingBox: bitBlt clipRect].^ true!Item was removed:
- ----- Method: MultiDisplayScanner>>plainTab (in category 'stop
conditions') -----
- plainTab
| oldX |oldX := destX.super plainTab.fillBlt == nil ifFalse:[fillBlt destX: oldX destY: destY width: destX - oldXheight: font
height; copyBits]!
Item was removed:
- ----- Method: MultiDisplayScanner>>presentationText: (in category
'private') -----
- presentationText: t
text := t.- !
Item was removed:
- ----- Method:
MultiDisplayScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:
stopConditions:kern:
(in category 'multilingual scanning') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| encoding f nextDestX maxAscii startEncoding char charValue |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stops at:EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf: TTCFontSet])ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
char := (sourceString at: lastIndex).charValue := char charCode.charValue > maxAscii ifTrue: [charValue := maxAscii].(encoding = 0 and: [(stopConditions at: charValue + 1) ~~nil]) ifTrue:
[
^ stops at: charValue + 1].nextDestX := destX + (self widthOf: char inFont: font).nextDestX > rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiDisplayScanner>>setDestForm: (in category
'private')
- setDestForm: df
bitBlt setDestForm: df.!Item was removed:
- ----- Method: MultiDisplayScanner>>setFont (in category 'private')
- setFont
foregroundColor := paragraphColor.super setFont. "Sets font and emphasis bits, and maybeforegroundColor"
font installOn: bitBlt foregroundColor: foregroundColorbackgroundColor:
Color transparent.
text ifNotNil:[baselineY := lineY + line baseline.destY := baselineY - font ascent].- !
Item was removed:
- ----- Method: MultiDisplayScanner>>setPort: (in category 'private')
- setPort: aBitBlt
"Install the BitBlt to use"bitBlt := aBitBlt.bitBlt sourceX: 0; width: 0. "Init BitBlt so that the firstcall to a
primitive will not fail"
bitBlt sourceForm: nil. "Make sure font installation won't beconfused"
- !
Item was removed:
- ----- Method: MultiDisplayScanner>>setStopConditions (in category
'stop
conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (alignment = Justified ifTrue:[#paddedSpace]).
- "
alignment = Justified ifTrue: [stopConditions == DefaultStopConditionsifTrue:[stopConditions := stopConditions copy].stopConditions at: Space asciiValue + 1 put: #paddedSpace]- "!
Item was removed:
- ----- Method: MultiDisplayScanner>>tab (in category 'stop conditions')
- tab
self plainTab.lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method:
MultiDisplayScanner>>text:textStyle:foreground:background:fillBlt:
ignoreColorChanges:
(in category 'private') -----
- text: t textStyle: ts foreground: foreColor background: backColor
fillBlt:
blt ignoreColorChanges: shadowMode
text := t.textStyle := ts.foregroundColor := paragraphColor := foreColor.(backgroundColor := backColor) isTransparent ifFalse:[fillBlt := blt.fillBlt fillColor: backgroundColor].ignoreColorChanges := shadowMode!Item was removed:
- ----- Method: MultiDisplayScanner>>textColor: (in category 'private')
- textColor: textColor
ignoreColorChanges ifTrue: [^ self].foregroundColor := textColor!Item was removed:
- NewParagraph subclass: #MultiNewParagraph
instanceVariableNames: 'presentationText presentationLines'classVariableNames: ''poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiNewParagraph>>displayOn:using:at: (in category
'fonts-display') -----
- displayOn: aCanvas using: displayScanner at: somePosition
"Send all visible lines to the displayScanner for display"| visibleRectangle offset leftInRun line |visibleRectangle := aCanvas clipRect.offset := somePosition - positionWhenComposed.leftInRun := 0.(self lineIndexForPoint: visibleRectangle topLeft)to: (self lineIndexForPoint: visibleRectangle bottomRight)do: [:i | line := lines at: i.self displaySelectionInLine: line on: aCanvas.line first <= line last ifTrue:[leftInRun := displayScanner displayLine:line
offset:offset leftInRun: leftInRun]].
- !
Item was removed:
- ----- Method: MultiNewParagraph>>displayOnTest:using:at: (in category
'fonts-display') -----
- displayOnTest: aCanvas using: displayScanner at: somePosition
"Send all visible lines to the displayScanner for display"| visibleRectangle offset leftInRun line |(presentationText isNil or: [presentationLines isNil]) ifTrue: [^ self displayOn: aCanvas using: displayScanner at:somePosition.
].visibleRectangle := aCanvas clipRect.offset := somePosition - positionWhenComposed.leftInRun := 0.(self lineIndexForPoint: visibleRectangle topLeft)to: (self lineIndexForPoint: visibleRectangle bottomRight)do: [:i | line := presentationLines at: i.self displaySelectionInLine: line on: aCanvas.line first <= line last ifTrue:[leftInRun := displayScanner displayLine:line
offset:offset leftInRun: leftInRun]].
- !
Item was removed:
- ----- Method:
MultiNewParagraph>>multiComposeLinesFrom:to:delta:into:priorLines:atY:
(in
category 'composition') -----
- multiComposeLinesFrom: start to: stop delta: delta into: lineColl
priorLines: priorLines
atY: startingY"While the section from start to stop has changed, composition mayripple
all the way to the end of the text. However in a rectangular container,
if
we ever find a line beginning with the same character as before (ie corresponding to delta in the old lines), then we can just copy the old lines from there to the end of the container, with adjusted indices and y-values"
| newResult composer presentationInfo |composer := MultiTextComposer new.presentationLines := nil.presentationText := nil.newResult := composermultiComposeLinesFrom: startto: stopdelta: deltainto: lineCollpriorLines: priorLinesatY: startingYtextStyle: textStyletext: textcontainer: containerwantsColumnBreaks: wantsColumnBreaks == true.lines := newResult first asArray.maxRightX := newResult second.presentationInfo := composer getPresentationInfo.presentationLines := presentationInfo first asArray.presentationText := presentationInfo second."maxRightX printString displayAt: 0@0."^maxRightX- !
Item was removed:
- ----- Method: MultiNewParagraph>>presentationLines (in category
'accessing') -----
- presentationLines
^ presentationLines.- !
Item was removed:
- ----- Method: MultiNewParagraph>>presentationText (in category
'accessing') -----
- presentationText
^ presentationText.- !
Item was removed:
- TextComposer subclass: #MultiTextComposer
instanceVariableNames: 'presentation presentationLines'classVariableNames: ''poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiTextComposer>>composeEachRectangleIn: (in category
'as
yet unclassified') -----
- composeEachRectangleIn: rectangles
| myLine lastChar |1 to: rectangles size do: [:i |currCharIndex <= theText size ifFalse: [^false].myLine := scannercomposeFrom: currCharIndexinRectangle: (rectangles at: i)firstLine: isFirstLineleftSide: i=1rightSide: i=rectangles size.lines addLast: myLine.presentationLines addLast: scanner getPresentationLine.presentation ifNil: [presentation := scannergetPresentation]
ifNotNil: [presentation := presentation, scannergetPresentation].
actualHeight := actualHeight max: myLine lineHeight."includes font
changes"
currCharIndex := myLine last + 1.lastChar := theText at: myLine last.lastChar = Character cr ifTrue: [^#cr].wantsColumnBreaks ifTrue: [lastChar = TextComposer characterForColumnBreakifTrue:
[^#columnBreak].
].].^false!Item was removed:
- ----- Method: MultiTextComposer>>getPresentationInfo (in category 'as
yet
unclassified') -----
- getPresentationInfo
^ Array with: presentationLines with: presentation.- !
Item was removed:
- ----- Method:
MultiTextComposer>>multiComposeLinesFrom:to:delta:into:priorLines:atY:
textStyle:text:container:wantsColumnBreaks:
(in category 'as yet unclassified') -----
- multiComposeLinesFrom: argStart to: argStop delta: argDelta into:
argLinesCollection priorLines: argPriorLines atY: argStartY textStyle: argTextStyle text: argText container: argContainer wantsColumnBreaks: argWantsColumnBreaks
wantsColumnBreaks := argWantsColumnBreaks.lines := argLinesCollection.presentationLines := argLinesCollection copy.theTextStyle := argTextStyle.theText := argText.theContainer := argContainer.deltaCharIndex := argDelta.currCharIndex := startCharIndex := argStart.stopCharIndex := argStop.prevLines := argPriorLines.currentY := argStartY.defaultLineHeight := theTextStyle lineGrid.maxRightX := theContainer left.possibleSlide := stopCharIndex < theText size and: [theContainerisMemberOf: Rectangle].
nowSliding := false.prevIndex := 1.scanner := MultiCompositionScanner new text: theText textStyle:theTextStyle.
scanner wantsColumnBreaks: wantsColumnBreaks.isFirstLine := true.self composeAllLines.isFirstLine ifTrue: ["No space in container or empty text"selfaddNullLineWithIndex: startCharIndexandRectangle: (theContainer topLeft extent:0@defaultLineHeight)
] ifFalse: [self fixupLastLineIfCR].^{lines asArray. maxRightX}- !
Found out that probably the following fix has to be made in addition
(see thread MorphicProject subclass: EtoysProject )
SmartRefStream>>initKnownRenames.
OLD initKnownRenames renamed at: #FlasherMorph put: #Flasher; at: #AlansTextPlusMorph put: #TextPlusMorph; at: #Project put: #MorphicProject; at: #Presenter put: #EtoysPresenter; yourself
Should probably be NEW
initKnownRenames renamed at: #FlasherMorph put: #Flasher; at: #AlansTextPlusMorph put: #TextPlusMorph; at: #Project put: #MorphicProject; at: #Presenter put: #EtoysPresenter; at: #MultiNewParagraph put: #NewParagraph; "NEW NEW NEW" yourself
On 10/5/17, Nicolas Cellier nicolas.cellier.aka.nice@gmail.com wrote:
Exactly! Multilingual features have been merged back into regular classes, so we don't need a fork anymore.
2017-10-05 21:03 GMT+02:00 H. Hirzel hannes.hirzel@gmail.com:
Note regarding the thread 'MorphicProject subclass: #EtoysProject'
Answer 'NewParagraph' when asked for a replacement class for 'MultiNewParagraph'
On Sat, 15 Apr 2017 13:45:33 0000, commits@source.squeak.org commits@source.squeak.org wrote:
Nicolas Cellier uploaded a new version of EToys to project The Trunk: http://source.squeak.org/trunk/EToys-nice.292.mcz
==================== Summary ====================
Name: EToys-nice.292 Author: nice Time: 15 April 2017, 3:44:39.800437 pm UUID: 39acfe15-791f-41c6-8aad-d679664643e7 Ancestors: EToys-eem.291
Remove the Multi*Scanner, MultiNewParagraph, MultiComposer because they
have
no additional value.
=============== Diff against EToys-eem.291 ===============
Item was changed: SystemOrganization addCategory: #'Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-CustomEvents'! SystemOrganization addCategory: #'Etoys-Experimental'! SystemOrganization addCategory: #'Etoys-Outliner'! SystemOrganization addCategory: #'Etoys-Protocols'! SystemOrganization addCategory: #'Etoys-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Scripting Tiles'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Base'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Connectors'! SystemOrganization addCategory: #'Etoys-Squeakland-EToys-Kedama'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Calendar'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Debugger'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Help'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Input'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting
Tiles'!
SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-
SpeechBubbles'!
SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Tile
Scriptors'!
SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-External'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Text'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Intersection'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Simplification'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Triangulation'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-AdditionalMorphs'! SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-Charts'!
SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Postscript Filters'! SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-WebCam'!
SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-Widgets'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Basic'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Books'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Components'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Demo'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Experimental'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Games'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Games-Chess'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-GeeMail'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Mentoring'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Navigators'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PartsBin'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PDA'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Windows'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Worlds'! SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-Languages'!
- SystemOrganization addCategory: #'Etoys-Squeakland-
Multilingual-Scanning'!
SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-TextConversion'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Formatter'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-
HTML-Forms'!
SystemOrganization addCategory: #'Etoys-Squeakland-Network-
HTML-Parser'!
SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Parser Entities'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Tokenizer'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-MIME'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-TelNet WordNet'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-UI'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-Url'! SystemOrganization addCategory: #'Etoys-Squeakland-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Interface'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Ogg'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Scores'! SystemOrganization addCategory: #'Etoys-Squeakland-ST80-Morphic'! SystemOrganization addCategory: #'Etoys-Squeakland-SUnit'! SystemOrganization addCategory: #'Etoys-Squeakland-Sugar'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Clipboard-Extended'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Compiler'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Exceptions Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Changes'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Explorer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-File Contents Browser'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Process
Browser'!
SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ObjectVectors'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTreeTransformer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTree-AttributeDefinition'! SystemOrganization addCategory: #'Etoys-Stacks'! SystemOrganization addCategory: #'Etoys-StarSqueak'! SystemOrganization addCategory: #'Etoys-Support'! SystemOrganization addCategory: #'Etoys-Tests'! SystemOrganization addCategory: #'Etoys-Tile Scriptors'! SystemOrganization addCategory: #'Etoys-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-SISS-
Serialization'!
SystemOrganization addCategory: #'Etoys-OLPC-Display'! SystemOrganization addCategory: #'Etoys-ReleaseBuilder'! SystemOrganization addCategory: #'Etoys-UserInterfaceTheme'!
Item was removed:
- ----- Method:
GrafPort>>displayScannerForMulti:foreground:background:
ignoreColorChanges:
(in category '*Etoys-Squeakland-accessing') -----
- displayScannerForMulti: para foreground: foreColor background:
backColor
ignoreColorChanges: shadowMode
((para isMemberOf: MultiNewParagraph) or: [para text stringisByteString]) ifTrue: [
^ (MultiDisplayScanner new text: para presentationTexttextStyle: para
textStyle
foreground: foreColor background:backColor fillBlt: self
ignoreColorChanges: shadowMode)setPort: self clone].^ (DisplayScanner new text: para text textStyle: para textStyleforeground: foreColor background: backColorfillBlt: self
ignoreColorChanges: shadowMode)setPort: self clone- !
Item was removed:
- MultiCharacterScanner subclass: #MultiCanvasCharacterScanner
instanceVariableNames: 'canvas fillBlt foregroundColor runXlineY'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>canvas: (in category
'accessing') -----
- canvas: aCanvas
"set the canvas to draw on"canvas ifNotNil: [ self inform: 'initializing twice!!' ].canvas := aCanvas!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>cr (in category 'stop
conditions') -----
- cr
"When a carriage return is encountered, simply increment thepointer
into the paragraph."lastIndex := lastIndex + 1.^false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>crossedX (in category
'stop conditions') -----
- crossedX
"This condition will sometimes be reached 'legally' duringdisplay, when,
for instance the space that caused the line to wrap actuallyextends over
the right boundary. This character is allowed to display, eventhough it
is technically outside or straddling the clipping ectangle sinceit is in
the normal case not visible and is in any case appropriatelyclipped by
the scanner.""self fillLeading."^ true !Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>
displayLine:offset:leftInRun:
(in category 'scanning') -----
- displayLine: textLine offset: offset leftInRun: leftInRun
| nowLeftInRun done startLoc startIndex stopCondition |"largely copied from DisplayScanner's routine"line := textLine.foregroundColor ifNil: [ foregroundColor := Color black ].leftMargin := (line leftMarginForAlignment: alignment) + offsetx.
rightMargin := line rightMargin + offset x.lineY := line top + offset y.lastIndex := textLine first.leftInRun <= 0ifTrue: [self setStopConditions. "also sets the font"nowLeftInRun := text runLengthFor:lastIndex]
ifFalse: [nowLeftInRun := leftInRun].runX := destX := leftMargin.runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last.spaceCount := 0.done := false.[done] whileFalse: ["remember where this portion of the line starts"startLoc := destX@destY.startIndex := lastIndex."find the end of this portion of the line"stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX:rightMargin stopConditions: stopConditions
kern: kern "displaying:false".
"display that portion of the line"canvas drawString: text stringfrom: startIndex to: lastIndexat: startLocfont: fontcolor: foregroundColor."handle the stop condition"done := self perform: stopCondition].^runStopIndex - lastIndex!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>doesDisplaying (in
category 'private') -----
- doesDisplaying
^false "it doesn't do displaying using copyBits"!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>endOfRun (in category
'stop conditions') -----
- endOfRun
"The end of a run in the display case either means that there isactually
a change in the style (run code) to be associated with the stringor the
end of this line has been reached."| runLength |lastIndex = line last ifTrue: [^true].runX := destX.runLength := text runLengthFor: (lastIndex := lastIndex + 1).runStopIndex := lastIndex + (runLength - 1) min: line last.self setStopConditions.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>paddedSpace (in category
'stop
conditions') -----
- paddedSpace
"Each space is a stop condition when the alignment is rightjustified.
Padding must be added to the base width of the space according towhich space in the line this space is and according to the amountof
space that remained at the end of the line when it was composed."destX := destX + spaceWidth + (line justifiedPadFor: spaceCount).lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>setFont (in category
'private')
- setFont
foregroundColor ifNil: [foregroundColor := Color black].super setFont.baselineY := lineY + line baseline.destY := baselineY - font ascent.!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>setStopConditions (in
category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (textStyle alignment = Justified ifTrue:[#paddedSpace]).
- !
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>tab (in category 'stop
conditions') -----
- tab
destX := (alignment == Justified and: [self leadingTab not])ifTrue: "imbedded tabs in justified text areweird"
[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStyle nextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin].lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>textColor: (in category
'private') -----
- textColor: color
foregroundColor := color!Item was removed:
- MultiCharacterScanner subclass: #MultiCharacterBlockScanner
instanceVariableNames: 'characterPoint characterIndexlastCharacter lastCharacterExtent lastSpaceOrTabExtent nextLeftMargin specialWidth'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>buildCharacterBlockIn: (in
category 'private') -----
- buildCharacterBlockIn: para
| lineIndex runLength lineStop done stopCondition |"handle nullText"(para numberOfLines = 0 or: [text size = 0])ifTrue: [^ CharacterBlock new stringIndex: 1 "like beingoff end of
string"
text: para texttopLeft: (paraleftMarginForDisplayForLine: 1 alignment: (alignment
ifNil:[textStyle alignment]))
@ paracompositionRectangle top
extent: 0 @ textStyle lineGrid]."find the line"lineIndex := para lineIndexOfTop: characterPoint y.destY := para topAtLineIndex: lineIndex.line := para lines at: lineIndex.rightMargin := para rightMarginForDisplay.(lineIndex = para numberOfLines and:[(destY + line lineHeight) < characterPoint y])ifTrue: ["if beyond lastLine, force search tolast
character"
self characterPointSetX:rightMargin]
ifFalse: [characterPoint y < (paracompositionRectangle) top
ifTrue: ["force search tofirst line"
characterPoint := (para compositionRectangle) topLeft].
characterPoint x > rightMarginifTrue: [selfcharacterPointSetX: rightMargin]].
destX := (leftMargin := para leftMarginForDisplayForLine:lineIndex alignment: (alignment ifNil:[textStyle alignment])).
nextLeftMargin := para leftMarginForDisplayForLine: lineIndex+1alignment: (alignment ifNil:[textStyle alignment]).
lastIndex := line first.self setStopConditions. "also sets font"runLength := (text runLengthFor: line first).characterIndex == nilifTrue: [lineStop := line last "characterBlockAtPoint"]ifFalse: [lineStop := characterIndex"characterBlockForIndex"].
(runStopIndex := lastIndex + (runLength - 1)) > lineStopifTrue: [runStopIndex := lineStop].lastCharacterExtent := 0 @ line lineHeight.spaceCount := 0. done := false.self handleIndentation.[done]whileFalse:[stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX: characterPoint xstopConditions: stopConditions kern: kern."see setStopConditions for stopping conditions for characterblock operations."
self lastCharacterExtentSetX: (font widthOf: (text at:lastIndex)).
(self perform: stopCondition) ifTrue:[characterIndex == nilifTrue: ["characterBlockAtPoint"^ CharacterBlock new stringIndex:lastIndex text: text
topLeft: characterPoint +(font descentKern @ 0)
extent:lastCharacterExtent]
ifFalse: ["characterBlockForIndex"^ CharacterBlock new stringIndex:lastIndex text: text
topLeft: characterPoint +((font descentKern) - kern @ 0)
extent:lastCharacterExtent]]]!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockAtPoint:in:
(in
category 'scanning') -----
- characterBlockAtPoint: aPoint in: aParagraph
"Answer a CharacterBlock for character in aParagraph at pointaPoint. It
is assumed that aPoint has been transformed into coordinatesappropriate
to the text's destination form rectangle and the compositionrectangle."
self initializeFromParagraph: aParagraph clippedBy: aParagraphclippingRectangle.
characterPoint := aPoint.^self buildCharacterBlockIn: aParagraph!Item was removed:
- ----- Method:
MultiCharacterBlockScanner>>characterBlockAtPoint:index:
in:
(in category 'scanning') -----
- characterBlockAtPoint: aPoint index: index in: textLine
"This method is the Morphic characterBlock finder. It combinesMVC's characterBlockAtPoint:, -ForIndex:, andbuildCharcterBlock:in:"
| runLength lineStop done stopCondition |line := textLine.rightMargin := line rightMargin.lastIndex := line first.self setStopConditions. "also sets font"characterIndex := index. " == nil means scanning for point"characterPoint := aPoint.(characterPoint isNil or: [characterPoint y > line bottom])ifTrue: [characterPoint := line bottomRight].(text isEmpty or: [(characterPoint y < line top or:[characterPoint x <
line left])
or: [characterIndex notNil and:[characterIndex < line first]]])
ifTrue: [^ (CharacterBlock new stringIndex: line firsttext: text
topLeft: line leftMargin@line topextent: 0 @ textStyle lineGrid)
textLine: line].destX := leftMargin := line leftMarginForAlignment: alignment.destY := line top.runLength := text runLengthFor: line first.characterIndexifNotNil: [lineStop := characterIndex "scanningfor
index"]
ifNil: [lineStop := line last "scanning for point"].runStopIndex := lastIndex + (runLength - 1) min: lineStop.lastCharacterExtent := 0 @ line lineHeight.spaceCount := 0.done := false.[done] whileFalse:[stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX: characterPoint xstopConditions: stopConditions kern: kern."see setStopConditions for stopping conditions forcharacter block
operations."
self lastCharacterExtentSetX: (specialWidthifNil: [font widthOf: (text at: lastIndex)]ifNotNil: [specialWidth]).(self perform: stopCondition) ifTrue:[characterIndexifNil: ["Result forcharacterBlockAtPoint:
"
(stopCondition ~~ #cr and: [lastIndex == line last
and: [ aPoint x >((characterPoint x) + (lastCharacterExtent x / 2))
]])
ifTrue: ["Correct
for right half of last character in line"
^(CharacterBlock new stringIndex: lastIndex + 1
text: text
topLeft: characterPoint + (lastCharacterExtent x @ 0) + (fontdescentKern @ 0)
extent: 0 @ lastCharacterExtent y)
textLine: line ].
^ (CharacterBlock newstringIndex: lastIndex
text: texttopLeft: characterPoint + (font descentKern @ 0)
extent:lastCharacterExtent - (font baseKern @ 0))
textLine: line]
ifNotNil: ["Result forcharacterBlockForIndex: "
^ (CharacterBlock newstringIndex: characterIndex
text: texttopLeft: characterPoint + ((font descentKern) - kern @
extent:lastCharacterExtent)
textLine: line]]]!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockForIndex:in:
(in
category 'scanning') -----
- characterBlockForIndex: targetIndex in: aParagraph
"Answer a CharacterBlock for character in aParagraph attargetIndex. The
coordinates in the CharacterBlock will be appropriate to theintersection
of the destination form rectangle and the composition rectangle."selfinitializeFromParagraph: aParagraphclippedBy: aParagraph clippingRectangle.characterIndex := targetIndex.characterPoint :=aParagraph rightMarginForDisplay @(aParagraph topAtLineIndex:(aParagraph lineIndexOfCharacterIndex:characterIndex)).
^self buildCharacterBlockIn: aParagraph!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterPointSetX: (in
category
'private') -----
- characterPointSetX: xVal
characterPoint := xVal @ characterPoint y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>cr (in category 'stop
conditions') -----
- cr
"Answer a CharacterBlock that specifies the current location ofthe mouse
relative to a carriage return stop condition that has just beenencountered. The ParagraphEditor convention is to denoteselections by
CharacterBlocks, sometimes including the carriage return (cursoris at
the end) and sometimes not (cursor is in the middle of thetext)."
((characterIndex ~= niland: [characterIndex > text size])or: [(line last = text size)and: [(destY + line lineHeight) <characterPoint y]])
ifTrue: ["When off end of string, give data for nextcharacter"
destY := destY + line lineHeight.baselineY := line lineHeight.lastCharacter := nil.characterPoint := (nextLeftMargin ifNil:[leftMargin]) @ destY.
lastIndex := lastIndex + 1.self lastCharacterExtentSetX: 0.^ true].lastCharacter := CR.characterPoint := destX @ destY.self lastCharacterExtentSetX: rightMargin - destX.^true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"Text display has wrapping. The scanner just found a characterpast the x
location of the cursor. We know that the cursor is pointing at acharacter
or before one."| leadingTab currentX |characterIndex == nil ifFalse: ["If the last character of the last line is a space,and it crosses the right margin, then locatingthe character block after it is impossible without thishack."
characterIndex > text size ifTrue: [lastIndex := characterIndex.characterPoint := (nextLeftMargin ifNil:[leftMargin]) @ (destY + line
lineHeight).
^true]].characterPoint x <= (destX + (lastCharacterExtent x // 2))ifTrue: [lastCharacter := (text at: lastIndex).characterPoint := destX @ destY.^true].lastIndex >= line lastifTrue: [lastCharacter := (text at: line last).characterPoint := destX @ destY.^true]."Pointing past middle of a character, return the next character."lastIndex := lastIndex + 1.lastCharacter := text at: lastIndex.currentX := destX + lastCharacterExtent x + kern.self lastCharacterExtentSetX: (font widthOf: lastCharacter).characterPoint := currentX @ destY.lastCharacter = Space ifFalse: [^ true]."Yukky if next character is space or tab."alignment = Justified ifTrue:[self lastCharacterExtentSetX:(lastCharacterExtent x + (linejustifiedPadFor: (spaceCount + 1))).
^ true].true ifTrue: [^ true]."NOTE: I find no value to the following code, and so havedefeated it -
DI"
"See tabForDisplay for illumination on the following awfulness."leadingTab := true.line first to: lastIndex - 1 do:[:index | (text at: index) ~= Tab ifTrue: [leadingTab :=false]].
(alignment ~= Justified or: [leadingTab])ifTrue: [self lastCharacterExtentSetX: (textStylenextTabXFrom: currentX
leftMargin: leftMarginrightMargin: rightMargin) -
currentX]ifFalse: [self lastCharacterExtentSetX:(((currentX + (textStyle
tabWidth -
(linejustifiedTabDeltaFor: spaceCount))) -
currentX) max:0)].
^ true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"Before arriving at the cursor location, the selection hasencountered an
end of run. Answer false if the selection continues, trueotherwise. Set
up indexes for building the appropriate CharacterBlock."| runLength lineStop |(((characterIndex ~~ nil and:[runStopIndex < characterIndex and: [runStopIndex < textsize]])
or: [characterIndex == nil and: [lastIndex <line last]]) or: [
((lastIndex < line last)and: [((text at: lastIndex) leadingChar~=
(text at: lastIndex+1)
leadingChar)
and: [lastIndex ~=characterIndex]])])
ifTrue: ["We're really at the end of a real run."runLength := (text runLengthFor:(lastIndex := lastIndex + 1)).
characterIndex ~~ nilifTrue: [lineStop :=characterIndex "scanning for index"]
ifFalse: [lineStop := linelast "scanning for point"].
(runStopIndex := lastIndex + (runLength -1)) > lineStop
ifTrue: [runStopIndex :=lineStop].
self setStopConditions.^false].lastCharacter := text at: lastIndex.characterPoint := destX @ destY.((lastCharacter = Space and: [alignment = Justified])or: [lastCharacter = Tab and: [lastSpaceOrTabExtentnotNil]])
ifTrue: [lastCharacterExtent := lastSpaceOrTabExtent].characterIndex ~~ nilifTrue: ["If scanning for an index and we've stopped onthat index,
then we back destX off by the width ofthe
character stopped on
(it will be pointing at the right side ofthe character) and return"
runStopIndex = characterIndexifTrue: [self characterPointSetX:destX - lastCharacterExtent x.
^true]."Otherwise the requested index wasgreater
than the length of the
string. Return string size + 1 as index,indicate further that off
the
string by setting character to nil andthe
extent to 0."
lastIndex := lastIndex + 1.lastCharacter := nil.self lastCharacterExtentSetX: 0.^true]."Scanning for a point and either off the end of the line or offthe end
of the string."
runStopIndex = text sizeifTrue: ["off end of string"lastIndex := lastIndex + 1.lastCharacter := nil.self lastCharacterExtentSetX: 0.^true]."just off end of line without crossing x"lastIndex := lastIndex + 1.^true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>indentationLevel: (in
category
'scanning') -----
- indentationLevel: anInteger
super indentationLevel: anInteger.nextLeftMargin := leftMargin.indentationLevel timesRepeat: [nextLeftMargin := textStyle nextTabXFrom: nextLeftMarginleftMargin: leftMarginrightMargin: rightMargin]!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>lastCharacterExtentSetX:
(in category 'private') -----
- lastCharacterExtentSetX: xVal
lastCharacterExtent := xVal @ lastCharacterExtent y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>lastSpaceOrTabExtentSetX:
(in
category 'private') -----
- lastSpaceOrTabExtentSetX: xVal
lastSpaceOrTabExtent := xVal @ lastSpaceOrTabExtent y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>paddedSpace (in category
'stop
conditions') -----
- paddedSpace
"When the line is justified, the spaces will not be the same asthe font's
space character. A padding of extra space must be considered intrying
to find which character the cursor is pointing at. Answer whetherthe
scanning has crossed the cursor."| pad |pad := 0.spaceCount := spaceCount + 1.pad := line justifiedPadFor: spaceCount.lastSpaceOrTabExtent := lastCharacterExtent copy.self lastSpaceOrTabExtentSetX: spaceWidth + pad.(destX + lastSpaceOrTabExtent x) >= characterPoint xifTrue: [lastCharacterExtent := lastSpaceOrTabExtentcopy.
^self crossedX].lastIndex := lastIndex + 1.destX := destX + lastSpaceOrTabExtent x.^ false- !
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>placeEmbeddedObject: (in
category 'scanning') -----
- placeEmbeddedObject: anchoredMorph
"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false].specialWidth := anchoredMorph width.^ true!Item was removed:
- ----- Method:
MultiCharacterBlockScanner>>scanMultiCharactersCombiningFr
om:to:in:rightX:stopConditions:kern:
(in category 'scanning') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| encoding f nextDestX maxAscii startEncoding char charValue |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
char := (sourceString at: lastIndex).charValue := char charCode.charValue > maxAscii ifTrue: [charValue := maxAscii].(encoding = 0 and: [(stopConditions at: charValue + 1) ~~nil]) ifTrue:
[
^ stops at: charValue + 1].nextDestX := destX + (self widthOf: char inFont: font).nextDestX > rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>setFont (in category 'stop
conditions') -----
- setFont
specialWidth := nil.super setFont!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>setStopConditions (in
category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (alignment = Justified ifTrue:[#paddedSpace]).
- !
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>tab (in category 'stop
conditions') -----
- tab
| currentX |currentX := (alignment == Justified and: [self leadingTab not])ifTrue: "imbedded tabs in justified text areweird"
[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStylenextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin].lastSpaceOrTabExtent := lastCharacterExtent copy.self lastSpaceOrTabExtentSetX: (currentX - destX max: 0).currentX >= characterPoint xifTrue:[lastCharacterExtent := lastSpaceOrTabExtentcopy.
^ self crossedX].destX := currentX.lastIndex := lastIndex + 1.^false!Item was removed:
- Object subclass: #MultiCharacterScanner
instanceVariableNames: 'destX lastIndex xTable destYstopConditions text
textStyle alignment leftMargin rightMargin font line runStopIndex
spaceCount
spaceWidth emphasisCode kern indentationLevel wantsColumnBreaks
presentation
presentationLine numOfComposition baselineY firstDestX'
classVariableNames: 'DefaultStopConditions NilConditionPaddedSpaceCondition SpaceCondition'
poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCharacterScanner class>>initialize (in category
'class
initialization') -----
- initialize
- "
MultiCharacterScanner initialize- "
| a |a := Array new: 258.a at: 1 + 1 put: #embeddedObject.a at: Tab asciiValue + 1 put: #tab.a at: CR asciiValue + 1 put: #cr.a at: EndOfRun put: #endOfRun.a at: CrossedX put: #crossedX.NilCondition := a copy.DefaultStopConditions := a copy.PaddedSpaceCondition := a copy.PaddedSpaceCondition at: Space asciiValue + 1 put: #paddedSpace.SpaceCondition := a copy.SpaceCondition at: Space asciiValue + 1 put: #space.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>addCharToPresentation: (in
category
'multilingual scanning') -----
- addCharToPresentation: char
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>addEmphasis: (in category
'private')
- addEmphasis: code
"Set the bold-ital-under-strike emphasis."emphasisCode := emphasisCode bitOr: code!Item was removed:
- ----- Method: MultiCharacterScanner>>addKern: (in category 'private')
- addKern: kernDelta
"Set the current kern amount."kern := kern + kernDelta!Item was removed:
- ----- Method:
MultiCharacterScanner>>basicScanCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- basicScanCharactersFrom: startIndex to: stopIndex in: sourceString
rightX:
rightX stopConditions: stops kern: kernDelta
"Primitive. This is the inner loop of text display--but seescanCharactersFrom: to:rightX: which would get the string,stopConditions and displaying from the instance. March throughsource
String from startIndex to stopIndex. If any character is flaggedwith a
non-nil entry in stops, then return the corresponding value.Determine
width of each character from xTable, indexed by map.If dextX would exceed rightX, then return stops at: 258.Advance destX by the width of the character. If stopIndex hasbeen
reached, then return stops at: 257. Optional.See Object documentation whatIsAPrimitive."| ascii nextDestX char |<primitive: 103>lastIndex := startIndex.[lastIndex <= stopIndex]whileTrue:[char := (sourceString at: lastIndex).ascii := char asciiValue + 1.(stops at: ascii) == nil ifFalse: [^stops at:ascii].
"Note: The following is querying the font aboutthe width
since the primitive may have failed due to anon-trivial
mapping of characters to glyphs or a non-existingxTable."
nextDestX := destX + (font widthOf: char).nextDestX > rightX ifTrue: [^stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1].lastIndex := stopIndex.^stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterScanner>>columnBreak (in category
'scanning')
- columnBreak
^true!Item was removed:
- ----- Method: MultiCharacterScanner>>combinableChar:for: (in category
'scanner methods') -----
- combinableChar: char for: prevEntity
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>embeddedObject (in category
'scanning') -----
- embeddedObject
| savedIndex |savedIndex := lastIndex.text attributesAt: lastIndex do:[:attr|attr anchoredMorph ifNotNil:["Following may look strange but logic getsreversed.
If the morph fits on this line we're not done(return false for true)
and if the morph won't fit we're done (returntrue
for false)"
(self placeEmbeddedObject: attr anchoredMorph)ifFalse:[^true]]].
lastIndex := savedIndex + 1. "for multiple(!!) embedded morphs"^false!Item was removed:
- ----- Method: MultiCharacterScanner>>handleIndentation (in category
'scanning') -----
- handleIndentation
self indentationLevel timesRepeat: [self plainTab]!Item was removed:
- ----- Method: MultiCharacterScanner>>indentationLevel (in category
'scanning') -----
- indentationLevel
"return the number of tabs that are currently being placed at thebeginning of each line"
^indentationLevel ifNil:[0]!Item was removed:
- ----- Method: MultiCharacterScanner>>indentationLevel: (in category
'scanning') -----
- indentationLevel: anInteger
"set the number of tabs to put at the beginning of each line"indentationLevel := anInteger!Item was removed:
- ----- Method: MultiCharacterScanner>>initialize (in category
'initialize')
- initialize
destX := destY := leftMargin := 0.!Item was removed:
- ----- Method: MultiCharacterScanner>>initializeFromParagraph:
clippedBy:
(in category 'private') -----
- initializeFromParagraph: aParagraph clippedBy: clippingRectangle
text := aParagraph text.textStyle := aParagraph textStyle.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>initializeStringMeasurer (in
category
'initialize') -----
- initializeStringMeasurer
stopConditions := Array new: 258.stopConditions at: CrossedX put: #crossedX.stopConditions at: EndOfRun put: #endOfRun.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>isBreakableAt:in:in: (in
category 'scanner methods') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ encodingClass isBreakableAt: index in: sourceString.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>leadingTab (in category
'scanning')
- leadingTab
"return true if only tabs lie to the left"line first to: lastIndex do:[:i | (text at: i) == Tab ifFalse: [^ false]].^ true!Item was removed:
- ----- Method: MultiCharacterScanner>>measureString:inFont:from:to:
(in category 'scanning') -----
- measureString: aString inFont: aFont from: startIndex to: stopIndex
"WARNING: In order to use this method the receiver has to be setup using
#initializeStringMeasurer"
destX := destY := lastIndex := 0.baselineY := aFont ascent.xTable := aFont xTable.font := aFont. " added Dec 03, 2004 "- " map := aFont characterToGlyphMap."
self scanCharactersFrom: startIndex to: stopIndex in: aStringrightX:
999999 stopConditions: stopConditions kern: 0.
^destX!Item was removed:
- ----- Method: MultiCharacterScanner>>placeEmbeddedObject: (in
category 'scanning') -----
- placeEmbeddedObject: anchoredMorph
"Place the anchoredMorph or return false if it cannot be placed.In any event, advance destX by its width."| w |"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].destX := destX + (w := anchoredMorph width).(destX > rightMargin and: [(leftMargin + w) <= rightMargin])ifTrue: ["Won't fit, but would on next line"^ false].lastIndex := lastIndex + 1.self setFont. "Force recalculation of emphasis for next run"^ true!Item was removed:
- ----- Method: MultiCharacterScanner>>plainTab (in category
'scanning')
- plainTab
"This is the basic method of adjusting destX for a tab."destX := (alignment == Justified and: [self leadingTab not])ifTrue: "embedded tabs in justified text areweird"
[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStyle nextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin]!Item was removed:
- ----- Method: MultiCharacterScanner>>registerBreakableIndex (in
category
'multilingual scanning') -----
- registerBreakableIndex
"Record left x and character index of the line-wrappable point.The default implementation here does nothing."^ false.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>removeLastCharFromPresentation
(in
category 'multilingual scanning') -----
- removeLastCharFromPresentation
- !
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- scanCharactersFrom: startIndex to: stopIndex in: sourceString rightX:
rightX stopConditions: stops kern: kernDelta
| startEncoding selector |(sourceString isByteString) ifTrue: [^ selfbasicScanCharactersFrom:
startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta.].
(sourceString isWideString) ifTrue: [startIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^stops at:
EndOfRun].
startEncoding := (sourceString at: startIndex)leadingChar.
selector := EncodedCharSet scanSelectorAt: startEncoding.^ self perform: selector withArguments: (Array with:startIndex with:
stopIndex with: sourceString with: rightX with: stopConditions with: kernDelta).
].^ stops at: EndOfRun- !
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanJapaneseCharactersFrom:to:
in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanJapaneseCharactersFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii."xTable := f xTable.maxAscii := xTable size - 2."spaceWidth := f widthOf: Space.] ifFalse: [(font isMemberOf: HostFont) ifTrue: [f := font.maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].].[lastIndex <= stopIndex] whileTrue: ["self halt."encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:(EncodedCharSet
charsetAt: encoding)) ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue:[^
stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:
stopConditions:kern:
(in category 'scanner methods') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| charCode encoding f maxAscii startEncoding combining combinedcombiningIndex c |
lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := font widthOf: Space.] ifFalse: [maxAscii := font maxAscii.spaceWidth := font widthOf: Space.].combining := nil.[lastIndex <= stopIndex] whileTrue: [charCode := (sourceString at: lastIndex) charCode.c := (sourceString at: lastIndex).combining ifNil: [combining := CombinedChar new.combining add: c.combiningIndex := lastIndex.lastIndex := lastIndex + 1.] ifNotNil: [(combining add: c) ifFalse: [self addCharToPresentation: (combined :=combining combined).
combining := CombinedChar new.combining add: c.charCode := combined charCode.encoding := combined leadingChar.encoding ~= startEncoding ifTrue:[lastIndex := lastIndex - 1.
(encoding = 0 and:[(stopConditions at: charCode + 1) ~~ nil])
ifTrue: [
^ stops at: charCode + 1] ifFalse: [^ stops at: EndOfRun].].charCode > maxAscii ifTrue: [charCode :=maxAscii].
""(encoding = 0 and: [(stopConditions at:charCode + 1) ~~ nil]) ifTrue:
[
combining ifNotNil: [selfaddCharToPresentation: (combining combined).
].^ stops at: charCode + 1].(self isBreakableAt: lastIndex in:sourceString in: Latin1Environment)
ifTrue: [
self registerBreakableIndex.].destX > rightX ifTrue: [destX ~= firstDestX ifTrue: [lastIndex :=combiningIndex.
selfremoveLastCharFromPresentation.
^ stops at: CrossedX]].combiningIndex := lastIndex.lastIndex := lastIndex + 1.] ifTrue: [lastIndex := lastIndex + 1.numOfComposition := numOfComposition + 1.].].].lastIndex := stopIndex.combining ifNotNil: [combined := combining combined.self addCharToPresentation: combined."assuming that there is always enough space for at leastone character".
destX := destX + (self widthOf: combined inFont: font).].^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- scanMultiCharactersFrom: startIndex to: stopIndex in: sourceString
rightX:
rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [ascii < stopConditions size and:[(stopConditions
at: ascii + 1) ~~ nil]]) ifTrue: [^ stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:Latin1Environment)
ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [destX ~= firstDestX ifTrue:[^
stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersR2LFrom:to:
in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanMultiCharactersR2LFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
"Note that 'rightX' really means 'endX' in R2L context. Ie.rightX is
usually smaller than destX."
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:Latin1Environment)
ifTrue: [
self registerBreakableIndex.].nextDestX := destX - (font widthOf: (sourceString at:lastIndex)).
nextDestX < rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX - kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanSimChineseCharactersFrom:
to:in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanSimChineseCharactersFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii."xTable := f xTable.maxAscii := xTable size - 2."spaceWidth := f widthOf: Space.] ifFalse: [(font isMemberOf: HostFont) ifTrue: [f := font.maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].].[lastIndex <= stopIndex] whileTrue: ["self halt."encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:(EncodedCharSet
charsetAt: encoding)) ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue:[^
stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterScanner>>setActualFont: (in category
'private') -----
- setActualFont: aFont
"Set the basal font to an isolated font reference."font := aFont!Item was removed:
- ----- Method: MultiCharacterScanner>>setAlignment: (in category
'private')
- setAlignment: style
alignment := style.!Item was removed:
- ----- Method: MultiCharacterScanner>>setConditionArray: (in category
'private') -----
- setConditionArray: aSymbol
aSymbol == #paddedSpace ifTrue: [^stopConditions :=PaddedSpaceCondition
"copy"].
"aSymbol == #space ifTrue: [^stopConditions := SpaceConditioncopy]."
aSymbol == nil ifTrue: [^stopConditions := NilCondition "copy"].self error: 'undefined stopcondition for space character'.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>setFont (in category 'private')
- setFont
| priorFont |"Set the font and other emphasis."priorFont := font.text == nil ifFalse:[emphasisCode := 0.kern := 0.indentationLevel := 0.alignment := textStyle alignment.font := nil.(text attributesAt: lastIndex forStyle: textStyle)do: [:att | att emphasizeScanner: self]].font == nil ifTrue:[self setFont: textStyle defaultFontIndex].font := font emphasized: emphasisCode.priorFont ifNotNil: [destX := destX + priorFont descentKern].destX := destX - font descentKern."NOTE: next statement should be removed when clipping works"leftMargin ifNotNil: [destX := destX max: leftMargin].kern := kern - font baseKern."Install various parameters from the font."spaceWidth := font widthOf: Space.xTable := font xTable.- " map := font characterToGlyphMap."
stopConditions := DefaultStopConditions.!Item was removed:
- ----- Method: MultiCharacterScanner>>setFont: (in category 'private')
- setFont: fontNumber
"Set the font by number from the textStyle."self setActualFont: (textStyle fontAt: fontNumber)!Item was removed:
- ----- Method: MultiCharacterScanner>>text:textStyle: (in category
'private') -----
- text: t textStyle: ts
text := t.textStyle := ts!Item was removed:
- ----- Method: MultiCharacterScanner>>textColor: (in category
'private')
- textColor: ignored
"Overridden in DisplayScanner"!Item was removed:
- ----- Method: MultiCharacterScanner>>wantsColumnBreaks: (in category
'initialize') -----
- wantsColumnBreaks: aBoolean
wantsColumnBreaks := aBoolean!Item was removed:
- ----- Method: MultiCharacterScanner>>widthOf:inFont: (in category
'multilingual scanning') -----
- widthOf: char inFont: aFont
(char isMemberOf: CombinedChar) ifTrue: [^ aFont widthOf: char base.] ifFalse: [^ aFont widthOf: char.].- !
Item was removed:
- MultiCharacterScanner subclass: #MultiCompositionScanner
instanceVariableNames: 'spaceX lineHeight baseline breakableIndexlineHeightAtBreak baselineAtBreak breakAtSpace lastWidth'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCompositionScanner>>addCharToPresentation: (in
category
'multilingual scanning') -----
- addCharToPresentation: char
presentation nextPut: char.lastWidth := self widthOf: char inFont: font.destX := destX + lastWidth.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>columnBreak (in category 'stop
conditions') -----
- columnBreak
"Answer true. Set up values for the text line interval currentlybeing
composed."line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.spaceX := destX.line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin - spaceX.^true!Item was removed:
- ----- Method:
MultiCompositionScanner>>composeFrom:inRectangle:
firstLine:leftSide:rightSide:
(in category 'scanning') -----
- composeFrom: startIndex inRectangle: lineRectangle
firstLine: firstLine leftSide: leftSide rightSide: rightSide"Answer an instance of TextLineInterval that represents the nextline in
the paragraph."
| runLength done stopCondition |"Set up margins"leftMargin := lineRectangle left.leftSide ifTrue: [leftMargin := leftMargin +(firstLine ifTrue:[textStyle firstIndent]
ifFalse:[textStyle restIndent])].
destX := spaceX := leftMargin.firstDestX := destX.rightMargin := lineRectangle right.rightSide ifTrue: [rightMargin := rightMargin - textStylerightIndent].
lastIndex := startIndex. "scanning sets last index"destY := lineRectangle top.lineHeight := baseline := 0. "Will be increased by setFont"self setStopConditions. "also sets font"runLength := text runLengthFor: startIndex.runStopIndex := (lastIndex := startIndex) + (runLength - 1).line := (TextLine start: lastIndex stop: 0 internalSpaces: 0paddingWidth: 0)
rectangle: lineRectangle.presentationLine := (TextLine start: lastIndex stop: 0internalSpaces: 0
paddingWidth: 0)
rectangle: lineRectangle.numOfComposition := 0.spaceCount := 0.self handleIndentation.leftMargin := destX.line leftMargin: leftMargin.presentationLine leftMargin: leftMargin.presentation := TextStream on: (Text fromString: (WideString new:text
size)).
done := false.[done]whileFalse:[stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: text string rightX: rightMarginstopConditions: stopConditions
kern: kern."See setStopConditions for stopping conditionsfor
composing."
(self perform: stopCondition)ifTrue: [presentationLine lineHeight:lineHeight + textStyle leading
baseline:baseline
- textStyle leading.
^ line lineHeight:lineHeight + textStyle leading
baseline:baseline
- textStyle leading]]!
Item was removed:
- ----- Method:
MultiCompositionScanner>>composeLine:fromCharacterIndex:inParagraph: (in category 'scanning') -----
- composeLine: lineIndex fromCharacterIndex: startIndex inParagraph:
aParagraph
"Answer an instance of TextLineInterval that represents the nextline in
the paragraph."
| runLength done stopCondition |destX := spaceX := leftMargin := aParagraphleftMarginForCompositionForLine: lineIndex.
destY := 0.rightMargin := aParagraph rightMarginForComposition.leftMargin >= rightMargin ifTrue: [self error: 'No room betweenmargins
to compose'].
lastIndex := startIndex. "scanning sets last index"lineHeight := textStyle lineGrid. "may be increased bysetFont:..."
baseline := textStyle baseline.baselineY := destY + baseline.self setStopConditions. "also sets font"self handleIndentation.runLength := text runLengthFor: startIndex.runStopIndex := (lastIndex := startIndex) + (runLength - 1).line := TextLineIntervalstart: lastIndexstop: 0internalSpaces: 0paddingWidth: 0.presentationLine := TextLineIntervalstart: lastIndexstop: 0internalSpaces: 0paddingWidth: 0.numOfComposition := 0.presentation := TextStream on: (Text fromString: (WideString new:text
size)).
spaceCount := 0.done := false.[done]whileFalse:[stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: text string rightX: rightMarginstopConditions: stopConditions
kern: kern."See setStopConditions for stopping conditionsfor
composing."
(self perform: stopCondition)ifTrue: [presentationLine lineHeight:lineHeight + textStyle leading
baseline:baseline
- textStyle leading.
^line lineHeight:lineHeight + textStyle leading
baseline:baseline
- textStyle leading]]!
Item was removed:
- ----- Method: MultiCompositionScanner>>cr (in category 'stop
conditions')
- cr
"Answer true. Set up values for the text line interval currentlybeing
composed."line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.spaceX := destX.line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin - spaceX.^true!Item was removed:
- ----- Method: MultiCompositionScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"There is a word that has fallen across the right edge of thecomposition
rectangle. This signals the need for wrapping which is done tothe
last
space that was encountered, as recorded by the space stopcondition."
(breakAtSpace) ifTrue: [spaceCount >= 1 ifTrue:["The common case. First back off to the space atwhich we wrap."
line stop: breakableIndex.presentationLine stop: breakableIndex -numOfComposition.
lineHeight := lineHeightAtBreak.baseline := baselineAtBreak.spaceCount := spaceCount - 1.breakableIndex := breakableIndex - 1."Check to see if any spaces preceding the one atwhich we wrap.
Double space after punctuation, mostlikely."
[(spaceCount > 1 and: [(text at: breakableIndex)=
Space])]
whileTrue:[spaceCount := spaceCount - 1."Account for backing over a runwhich might
change width of space."font := text fontAt:breakableIndex withStyle: textStyle.
breakableIndex := breakableIndex
spaceX := spaceX - (font widthOf:Space)].
line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin -spaceX.
presentationLine internalSpaces: spaceCount.line internalSpaces: spaceCount]ifFalse:["Neither internal nor trailing spaces -- almostnever happens."
lastIndex := lastIndex - 1.[destX <= rightMargin]whileFalse:[destX := destX - (font widthOf:(text at: lastIndex)).
lastIndex := lastIndex - 1].spaceX := destX.line paddingWidth: rightMargin - destX.presentationLine paddingWidth: rightMargin -destX.
presentationLine stop: (lastIndex max: linefirst).
line stop: (lastIndex max: line first)].^true].(breakableIndex isNil or: [breakableIndex < line first]) ifTrue:[
"Any breakable point in this line. Just wrap lastcharacter."
breakableIndex := lastIndex - 1.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.]."It wasn't a space, but anyway this is where we break the line."line stop: breakableIndex.presentationLine stop: breakableIndex.lineHeight := lineHeightAtBreak.baseline := baselineAtBreak.^ true.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"Answer true if scanning has reached the end of the paragraph.Otherwise step conditions (mostly install potential new font) andanswer
false."| runLength |lastIndex = text sizeifTrue: [line stop: lastIndex.presentationLine stop: lastIndex -numOfComposition.
spaceX := destX.line paddingWidth: rightMargin - destX.presentationLine paddingWidth: rightMargin -destX.
^true]ifFalse: ["(text at: lastIndex) charCode = 32 ifTrue:[destX
:= destX +
spaceWidth]."
runLength := (text runLengthFor: (lastIndex :=lastIndex + 1)).
runStopIndex := lastIndex + (runLength - 1).self setStopConditions.^false]- !
Item was removed:
- ----- Method: MultiCompositionScanner>>forParagraph: (in category
'intialize-release') -----
- forParagraph: aParagraph
"Initialize the receiver for scanning the given paragraph."selfinitializeFromParagraph: aParagraphclippedBy: aParagraph clippingRectangle.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>getPresentation (in category
'multilingual scanning') -----
- getPresentation
^ presentation contents.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>getPresentationLine (in
category
'multilingual scanning') -----
- getPresentationLine
^ presentationLine.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>isBreakableAt:in:in: (in
category
'multilingual scanning') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ encodingClass isBreakableAt: index in: sourceString.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>placeEmbeddedObject: (in
category
'stop conditions') -----
- placeEmbeddedObject: anchoredMorph
| descent |"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: ["It doesn'tfit"
"But if it's the first character then leave it here"lastIndex < line first ifFalse:[line stop: lastIndex-1.^ false]].descent := lineHeight - baseline.lineHeight := lineHeight max: anchoredMorph height.baseline := lineHeight - descent.line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.^ true!Item was removed:
- ----- Method: MultiCompositionScanner>>presentation (in category
'accessing') -----
- presentation
^ presentation.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>presentationLine (in category
'accessing') -----
- presentationLine
^ presentationLine.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>registerBreakableIndex (in
category
'multilingual scanning') -----
- registerBreakableIndex
"Record left x and character index of the line-wrappable point.Used for wrap-around. Answer whether the character has crossedthe
right edge of the composition rectangle of the paragraph."(text at: lastIndex) = Character space ifTrue: [breakAtSpace := true.spaceX := destX.spaceCount := spaceCount + 1.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.breakableIndex := lastIndex.destX > rightMargin ifTrue: [^self crossedX].] ifFalse: [breakAtSpace := false.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.breakableIndex := lastIndex - 1.].^ false.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>removeLastCharFromPresentation
(in
category 'multilingual scanning') -----
- removeLastCharFromPresentation
presentation ifNotNil: [presentation position: presentation position - 1.].destX := destX - lastWidth.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>rightX (in category
'accessing')
- rightX
"Meaningful only when a line has just been composed -- refers tothe
line most recently composed. This is a subtrefuge to allow foreasy
resizing of a composition rectangle to the width of the maximumline.
Useful only when there is only one line in the form or when eachline
is terminated by a carriage return. Handy for sizing menus andlists."
breakAtSpace ifTrue: [^ spaceX].^ destX.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>setActualFont: (in category
'scanning') -----
- setActualFont: aFont
"Keep track of max height and ascent for auto lineheight"| descent |super setActualFont: aFont."' ', lastIndex printString, ' ' displayAt: (lastIndex *15)@0."
lineHeight == nilifTrue: [descent := font descent.baseline := font ascent.lineHeight := baseline + descent]ifFalse: [descent := lineHeight - baseline max: fontdescent.
baseline := baseline max: font ascent.lineHeight := lineHeight max: baseline +descent]!
Item was removed:
- ----- Method: MultiCompositionScanner>>setFont (in category 'stop
conditions') -----
- setFont
super setFont.breakAtSpace := false.wantsColumnBreaks == true ifTrue: [stopConditions := stopConditions copy.stopConditions at: TextComposer characterForColumnBreakasciiValue + 1
put: #columnBreak.
].- !
Item was removed:
- ----- Method: MultiCompositionScanner>>setStopConditions (in category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont!Item was removed:
- ----- Method: MultiCompositionScanner>>tab (in category 'stop
conditions')
- tab
"Advance destination x according to tab settings in theparagraph's
textStyle. Answer whether the character has crossed the rightedge
of
the composition rectangle of the paragraph."destX := textStylenextTabXFrom: destX leftMargin:leftMargin
rightMargin: rightMargin.
destX > rightMargin ifTrue: [^self crossedX].lastIndex := lastIndex + 1.^false- !
Item was removed:
- MultiCharacterScanner subclass: #MultiDisplayScanner
instanceVariableNames: 'bitBlt lineY runX foregroundColorbackgroundColor
fillBlt lineHeight paragraph paragraphColor morphicOffset ignoreColorChanges'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiDisplayScanner class>>defaultFont (in category
'queries') -----
- defaultFont
^ TextStyle defaultFont!Item was removed:
- ----- Method: MultiDisplayScanner>>cr (in category 'stop conditions')
- cr
"When a carriage return is encountered, simply increment thepointer
into the paragraph."lastIndex := lastIndex + 1.^false!Item was removed:
- ----- Method: MultiDisplayScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"This condition will sometimes be reached 'legally' duringdisplay, when,
for instance the space that caused the line to wrap actuallyextends over
the right boundary. This character is allowed to display, eventhough it
is technically outside or straddling the clipping ectangle sinceit is in
the normal case not visible and is in any case appropriatelyclipped by
the scanner."^ true !Item was removed:
- ----- Method: MultiDisplayScanner>>displayLine:offset:leftInRun: (in
category 'scanning') -----
- displayLine: textLine offset: offset leftInRun: leftInRun
"The call on the primitive (scanCharactersFrom:to:in:rightX:)will be
interrupted according to an array of stop conditions passed to the
scanner
at which time the code to handle the stop condition is run and the call
on
the primitive continued until a stop condition returns true (which means
the
line has terminated). leftInRun is the # of characters left to scan in
the
current run; when 0, it is time to call setStopConditions."
| done stopCondition nowLeftInRun startIndex string lastPos |line := textLine.morphicOffset := offset.lineY := line top + offset y.lineHeight := line lineHeight.rightMargin := line rightMargin + offset x.lastIndex := line first.leftInRun <= 0 ifTrue: [self setStopConditions].leftMargin := (line leftMarginForAlignment: alignment) + offsetx.
destX := runX := leftMargin.fillBlt == nil ifFalse:["Not right"fillBlt destX: line left destY: lineYwidth: line width left height: lineHeight;copyBits].
lastIndex := line first.leftInRun <= 0ifTrue: [nowLeftInRun := text runLengthFor: lastIndex]ifFalse: [nowLeftInRun := leftInRun].baselineY := lineY + line baseline.destY := baselineY - font ascent.runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last.spaceCount := 0.done := false.string := text string.[done] whileFalse:[startIndex := lastIndex.lastPos := destX@destY.stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: string rightX:rightMargin stopConditions: stopConditions
kern: kern.lastIndex >= startIndex ifTrue:[font displayString: string on: bitBltfrom: startIndex"XXXX: The following is an interesting bug. All stopConditionsexept
#endOfRun
have lastIndex past the last character displayed.#endOfRun sets it *on*
the character.
If we display up until lastIndex then we will alsodisplay
invisible
characters like
CR and tab. This problem should be fixed in the scanner(i.e., position
lastIndex
consistently) but I don't want to deal with the falloutright now so we
keep the
fix minimally invasive."to: (stopCondition == #endOfRunifTrue:[lastIndex]
ifFalse:[lastIndex-1])
at: lastPos kern: kern baselineY:baselineY].
"see setStopConditions for stopping conditions fordisplaying."
done := self perform: stopCondition."lastIndex > runStopIndex ifTrue: [done := true]."].^ runStopIndex - lastIndex "Number of characters remaining inthe current run"!
Item was removed:
- ----- Method: MultiDisplayScanner>>displayLines:in:clippedBy: (in
category
'MVC-compatibility') -----
- displayLines: linesInterval in: aParagraph clippedBy:
visibleRectangle
"The central display routine. The call on the primitive(scanCharactersFrom:to:in:rightX:) will be interrupted accordingto an
array of stop conditions passed to the scanner at which time thecode to
handle the stop condition is run and the call on the primitivecontinued
until a stop condition returns true (which means the line hasterminated)."| runLength done stopCondition leftInRun startIndex stringlastPos
|
"leftInRun is the # of characters left to scan in the currentrun;
when 0, it is time to call 'self setStopConditions'"morphicOffset := 0@0.leftInRun := 0.self initializeFromParagraph: aParagraph clippedBy:visibleRectangle.
ignoreColorChanges := false.paragraph := aParagraph.foregroundColor := paragraphColor := aParagraph foregroundColor.backgroundColor := aParagraph backgroundColor.aParagraph backgroundColor isTransparentifTrue: [fillBlt := nil]ifFalse: [fillBlt := bitBlt copy. "Blt to fill spaces,tabs, margins"
fillBlt sourceForm: nil; sourceOrigin:0@0.
fillBlt fillColor: aParagraphbackgroundColor].
rightMargin := aParagraph rightMarginForDisplay.lineY := aParagraph topAtLineIndex: linesInterval first.bitBlt destForm deferUpdatesIn: visibleRectangle while: [linesInterval do:[:lineIndex |leftMargin := aParagraphleftMarginForDisplayForLine: lineIndex
alignment: (alignment ifNil:[textStyle alignment]).
destX := (runX := leftMargin).line := aParagraph lines at: lineIndex.lineHeight := line lineHeight.fillBlt == nil ifFalse:[fillBlt destX: visibleRectangle leftdestY: lineY
width: visibleRectangle widthheight: lineHeight; copyBits].
lastIndex := line first.leftInRun <= 0ifTrue: [self setStopConditions. "alsosets the font"
leftInRun := textrunLengthFor: line first].
baselineY := lineY + line baseline.destY := baselineY - font ascent. "Should havehappened in setFont"
runLength := leftInRun.runStopIndex := lastIndex + (runLength - 1) min:line last.
leftInRun := leftInRun - (runStopIndex -lastIndex
- 1).
spaceCount := 0.done := false.string := text string.self handleIndentation.[done] whileFalse:[startIndex := lastIndex.lastPos := destX@destY.stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: stringrightX:
rightMargin stopConditions: stopConditions
kern: kern.lastIndex >= startIndex ifTrue:[font displayString: string on:bitBlt
from: startIndex to:lastIndex at: lastPos kern: kern baselineY:
baselineY].
"see setStopConditions for stoppingconditions for displaying."
done := self perform: stopCondition].fillBlt == nil ifFalse:[fillBlt destX: destX destY: lineY width:visibleRectangle right-destX
height: lineHeight; copyBits].
lineY := lineY + lineHeight]]!Item was removed:
- ----- Method: MultiDisplayScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"The end of a run in the display case either means that there isactually
a change in the style (run code) to be associated with the stringor the
end of this line has been reached."| runLength |lastIndex = line last ifTrue: [^true].runX := destX.runLength := text runLengthFor: (lastIndex := lastIndex + 1).runStopIndex := lastIndex + (runLength - 1) min: line last.self setStopConditions.^ false!Item was removed:
- ----- Method: MultiDisplayScanner>>initializeFromParagraph:clippedBy:
(in
category 'MVC-compatibility') -----
- initializeFromParagraph: aParagraph clippedBy: clippingRectangle
super initializeFromParagraph: aParagraph clippedBy:clippingRectangle.
bitBlt := BitBlt asGrafPort toForm: aParagraph destinationForm.bitBlt sourceX: 0; width: 0. "Init BitBlt so that the firstcall to a
primitive will not fail"
bitBlt combinationRule: Form paint.bitBlt colorMap:(Bitmap with: 0 "Assumes 1-bit deep fonts"with: (bitBlt destForm pixelValueFor:aParagraph foregroundColor)).
bitBlt clipRect: clippingRectangle.- !
Item was removed:
- ----- Method: MultiDisplayScanner>>isBreakableAt:in:in: (in category
'multilingual scanning') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ false.- !
Item was removed:
- ----- Method: MultiDisplayScanner>>paddedSpace (in category 'stop
conditions') -----
- paddedSpace
"Each space is a stop condition when the alignment is rightjustified.
Padding must be added to the base width of the space according towhich space in the line this space is and according to the amountof
space that remained at the end of the line when it was composed."spaceCount := spaceCount + 1.destX := destX + spaceWidth + (line justifiedPadFor: spaceCount).lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiDisplayScanner>>placeEmbeddedObject: (in category
'scanning') -----
- placeEmbeddedObject: anchoredMorph
anchoredMorph relativeTextAnchorPosition ifNotNil:[anchoredMorph position:anchoredMorph relativeTextAnchorPosition +(anchoredMorph owner textBounds origin x @ 0)- (0@morphicOffset y) + (0@lineY).^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false].anchoredMorph isMorph ifTrue: [anchoredMorph position: ((destX - anchoredMorphwidth)@lineY) -
morphicOffset
] ifFalse: [destY := lineY.baselineY := lineY + anchoredMorph height..runX := destX.anchoredMorphdisplayOn: bitBlt destFormat: destX - anchoredMorph width @ destYclippingBox: bitBlt clipRect].^ true!Item was removed:
- ----- Method: MultiDisplayScanner>>plainTab (in category 'stop
conditions') -----
- plainTab
| oldX |oldX := destX.super plainTab.fillBlt == nil ifFalse:[fillBlt destX: oldX destY: destY width: destX - oldXheight: font
height; copyBits]!
Item was removed:
- ----- Method: MultiDisplayScanner>>presentationText: (in category
'private') -----
- presentationText: t
text := t.- !
Item was removed:
- ----- Method:
MultiDisplayScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:
stopConditions:kern:
(in category 'multilingual scanning') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| encoding f nextDestX maxAscii startEncoding char charValue |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
char := (sourceString at: lastIndex).charValue := char charCode.charValue > maxAscii ifTrue: [charValue := maxAscii].(encoding = 0 and: [(stopConditions at: charValue + 1) ~~nil]) ifTrue:
[
^ stops at: charValue + 1].nextDestX := destX + (self widthOf: char inFont: font).nextDestX > rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiDisplayScanner>>setDestForm: (in category
'private')
- setDestForm: df
bitBlt setDestForm: df.!Item was removed:
- ----- Method: MultiDisplayScanner>>setFont (in category 'private')
- setFont
foregroundColor := paragraphColor.super setFont. "Sets font and emphasis bits, and maybeforegroundColor"
font installOn: bitBlt foregroundColor: foregroundColorbackgroundColor:
Color transparent.
text ifNotNil:[baselineY := lineY + line baseline.destY := baselineY - font ascent].- !
Item was removed:
- ----- Method: MultiDisplayScanner>>setPort: (in category 'private')
- setPort: aBitBlt
"Install the BitBlt to use"bitBlt := aBitBlt.bitBlt sourceX: 0; width: 0. "Init BitBlt so that the firstcall to a
primitive will not fail"
bitBlt sourceForm: nil. "Make sure font installation won't beconfused"
- !
Item was removed:
- ----- Method: MultiDisplayScanner>>setStopConditions (in category
'stop
conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (alignment = Justified ifTrue:[#paddedSpace]).
- "
alignment = Justified ifTrue: [stopConditions == DefaultStopConditionsifTrue:[stopConditions := stopConditions copy].stopConditions at: Space asciiValue + 1 put:#paddedSpace]
- "!
Item was removed:
- ----- Method: MultiDisplayScanner>>tab (in category 'stop
conditions')
- tab
self plainTab.lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method:
MultiDisplayScanner>>text:textStyle:foreground:background:fillBlt:
ignoreColorChanges:
(in category 'private') -----
- text: t textStyle: ts foreground: foreColor background: backColor
fillBlt:
blt ignoreColorChanges: shadowMode
text := t.textStyle := ts.foregroundColor := paragraphColor := foreColor.(backgroundColor := backColor) isTransparent ifFalse:[fillBlt := blt.fillBlt fillColor: backgroundColor].ignoreColorChanges := shadowMode!Item was removed:
- ----- Method: MultiDisplayScanner>>textColor: (in category 'private')
- textColor: textColor
ignoreColorChanges ifTrue: [^ self].foregroundColor := textColor!Item was removed:
- NewParagraph subclass: #MultiNewParagraph
instanceVariableNames: 'presentationText presentationLines'classVariableNames: ''poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiNewParagraph>>displayOn:using:at: (in category
'fonts-display') -----
- displayOn: aCanvas using: displayScanner at: somePosition
"Send all visible lines to the displayScanner for display"| visibleRectangle offset leftInRun line |visibleRectangle := aCanvas clipRect.offset := somePosition - positionWhenComposed.leftInRun := 0.(self lineIndexForPoint: visibleRectangle topLeft)to: (self lineIndexForPoint: visibleRectanglebottomRight)
do: [:i | line := lines at: i.self displaySelectionInLine: line on: aCanvas.line first <= line last ifTrue:[leftInRun := displayScanner displayLine:line
offset:offset leftInRun: leftInRun]].
- !
Item was removed:
- ----- Method: MultiNewParagraph>>displayOnTest:using:at: (in category
'fonts-display') -----
- displayOnTest: aCanvas using: displayScanner at: somePosition
"Send all visible lines to the displayScanner for display"| visibleRectangle offset leftInRun line |(presentationText isNil or: [presentationLines isNil]) ifTrue: [^ self displayOn: aCanvas using: displayScanner at:somePosition.
].visibleRectangle := aCanvas clipRect.offset := somePosition - positionWhenComposed.leftInRun := 0.(self lineIndexForPoint: visibleRectangle topLeft)to: (self lineIndexForPoint: visibleRectanglebottomRight)
do: [:i | line := presentationLines at: i.self displaySelectionInLine: line on: aCanvas.line first <= line last ifTrue:[leftInRun := displayScanner displayLine:line
offset:offset leftInRun: leftInRun]].
- !
Item was removed:
- ----- Method:
MultiNewParagraph>>multiComposeLinesFrom:to:delta:into:priorLines:atY:
(in
category 'composition') -----
- multiComposeLinesFrom: start to: stop delta: delta into: lineColl
priorLines: priorLines
atY: startingY"While the section from start to stop has changed, compositionmay
ripple
all the way to the end of the text. However in a rectangular container,
if
we ever find a line beginning with the same character as before (ie corresponding to delta in the old lines), then we can just copy the old lines from there to the end of the container, with adjusted indices and y-values"
| newResult composer presentationInfo |composer := MultiTextComposer new.presentationLines := nil.presentationText := nil.newResult := composermultiComposeLinesFrom: startto: stopdelta: deltainto: lineCollpriorLines: priorLinesatY: startingYtextStyle: textStyletext: textcontainer: containerwantsColumnBreaks: wantsColumnBreaks == true.lines := newResult first asArray.maxRightX := newResult second.presentationInfo := composer getPresentationInfo.presentationLines := presentationInfo first asArray.presentationText := presentationInfo second."maxRightX printString displayAt: 0@0."^maxRightX- !
Item was removed:
- ----- Method: MultiNewParagraph>>presentationLines (in category
'accessing') -----
- presentationLines
^ presentationLines.- !
Item was removed:
- ----- Method: MultiNewParagraph>>presentationText (in category
'accessing') -----
- presentationText
^ presentationText.- !
Item was removed:
- TextComposer subclass: #MultiTextComposer
instanceVariableNames: 'presentation presentationLines'classVariableNames: ''poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiTextComposer>>composeEachRectangleIn: (in category
'as
yet unclassified') -----
- composeEachRectangleIn: rectangles
| myLine lastChar |1 to: rectangles size do: [:i |currCharIndex <= theText size ifFalse: [^false].myLine := scannercomposeFrom: currCharIndexinRectangle: (rectangles at: i)firstLine: isFirstLineleftSide: i=1rightSide: i=rectangles size.lines addLast: myLine.presentationLines addLast: scanner getPresentationLine.presentation ifNil: [presentation := scannergetPresentation]
ifNotNil: [presentation := presentation, scannergetPresentation].
actualHeight := actualHeight max: myLine lineHeight."includes font
changes"
currCharIndex := myLine last + 1.lastChar := theText at: myLine last.lastChar = Character cr ifTrue: [^#cr].wantsColumnBreaks ifTrue: [lastChar = TextComposer characterForColumnBreakifTrue:
[^#columnBreak].
].].^false!Item was removed:
- ----- Method: MultiTextComposer>>getPresentationInfo (in category 'as
yet
unclassified') -----
- getPresentationInfo
^ Array with: presentationLines with: presentation.- !
Item was removed:
- ----- Method:
MultiTextComposer>>multiComposeLinesFrom:to:delta:into:priorLines:atY:
textStyle:text:container:wantsColumnBreaks:
(in category 'as yet unclassified') -----
- multiComposeLinesFrom: argStart to: argStop delta: argDelta into:
argLinesCollection priorLines: argPriorLines atY: argStartY textStyle: argTextStyle text: argText container: argContainer wantsColumnBreaks: argWantsColumnBreaks
wantsColumnBreaks := argWantsColumnBreaks.lines := argLinesCollection.presentationLines := argLinesCollection copy.theTextStyle := argTextStyle.theText := argText.theContainer := argContainer.deltaCharIndex := argDelta.currCharIndex := startCharIndex := argStart.stopCharIndex := argStop.prevLines := argPriorLines.currentY := argStartY.defaultLineHeight := theTextStyle lineGrid.maxRightX := theContainer left.possibleSlide := stopCharIndex < theText size and: [theContainerisMemberOf: Rectangle].
nowSliding := false.prevIndex := 1.scanner := MultiCompositionScanner new text: theText textStyle:theTextStyle.
scanner wantsColumnBreaks: wantsColumnBreaks.isFirstLine := true.self composeAllLines.isFirstLine ifTrue: ["No space in container or empty text"selfaddNullLineWithIndex: startCharIndexandRectangle: (theContainer topLeft extent:0@defaultLineHeight)
] ifFalse: [self fixupLastLineIfCR].^{lines asArray. maxRightX}- !
On 08.10.2017, at 22:02, H. Hirzel hannes.hirzel@gmail.com wrote:
Found out that probably the following fix has to be made in addition
(see thread MorphicProject subclass: EtoysProject )
Or this:
SmartRefStream>>multiNewParagraphttfclpomsswfpp0
^ NewParagraph
But note that In Etoys MultiNewParagraph looks like this:
ProtoObject #() Object #() NewParagraph #('text' 'textStyle' 'firstCharacterIndex' 'container' 'lines' 'positionWhenComposed' 'offsetToEnd' 'maxRightX' 'selectionStart' 'selectionStop' 'wantsColumnBreaks' 'focused') MultiNewParagraph #('presentationText' 'presentationLines') While in Squeak5/trunk it looks like that:
ProtoObject #() Object #() NewParagraph #('text' 'textStyle' 'firstCharacterIndex' 'container' 'lines' 'positionWhenComposed' 'offsetToEnd' 'maxRightX' 'selectionStart' 'selectionStop' 'wantsColumnBreaks' 'focused' 'caretRect' 'showCaret' 'caretColor' 'selectionColor' 'unfocusedSelectionColor')
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
Best regards -Tobias
SmartRefStream>>initKnownRenames.
OLD initKnownRenames renamed at: #FlasherMorph put: #Flasher; at: #AlansTextPlusMorph put: #TextPlusMorph; at: #Project put: #MorphicProject; at: #Presenter put: #EtoysPresenter; yourself
Should probably be NEW
initKnownRenames renamed at: #FlasherMorph put: #Flasher; at: #AlansTextPlusMorph put: #TextPlusMorph; at: #Project put: #MorphicProject; at: #Presenter put: #EtoysPresenter; at: #MultiNewParagraph put: #NewParagraph; "NEW NEW NEW" yourself
On 10/5/17, Nicolas Cellier nicolas.cellier.aka.nice@gmail.com wrote:
Exactly! Multilingual features have been merged back into regular classes, so we don't need a fork anymore.
2017-10-05 21:03 GMT+02:00 H. Hirzel hannes.hirzel@gmail.com:
Note regarding the thread 'MorphicProject subclass: #EtoysProject'
Answer 'NewParagraph' when asked for a replacement class for 'MultiNewParagraph'
On Sat, 15 Apr 2017 13:45:33 0000, commits@source.squeak.org commits@source.squeak.org wrote:
Nicolas Cellier uploaded a new version of EToys to project The Trunk: http://source.squeak.org/trunk/EToys-nice.292.mcz
==================== Summary ====================
Name: EToys-nice.292 Author: nice Time: 15 April 2017, 3:44:39.800437 pm UUID: 39acfe15-791f-41c6-8aad-d679664643e7 Ancestors: EToys-eem.291
Remove the Multi*Scanner, MultiNewParagraph, MultiComposer because they
have
no additional value.
=============== Diff against EToys-eem.291 ===============
Item was changed: SystemOrganization addCategory: #'Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-CustomEvents'! SystemOrganization addCategory: #'Etoys-Experimental'! SystemOrganization addCategory: #'Etoys-Outliner'! SystemOrganization addCategory: #'Etoys-Protocols'! SystemOrganization addCategory: #'Etoys-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Scripting Tiles'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Base'! SystemOrganization addCategory: #'Etoys-Squeakland-BroomMorphs-Connectors'! SystemOrganization addCategory: #'Etoys-Squeakland-EToys-Kedama'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Buttons'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Calendar'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Debugger'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Help'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Input'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Scripting
Tiles'!
SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-
SpeechBubbles'!
SystemOrganization addCategory: #'Etoys-Squeakland-Etoys-Tile
Scriptors'!
SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-External'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Text'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Intersection'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Simplification'! SystemOrganization addCategory: #'Etoys-Squeakland-Graphics-Tools-Triangulation'! SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-AdditionalMorphs'! SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-Charts'!
SystemOrganization addCategory: #'Etoys-Squeakland-MorphicExtras-Postscript Filters'! SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-WebCam'!
SystemOrganization addCategory: #'Etoys-Squeakland-
MorphicExtras-Widgets'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Basic'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Books'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Components'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Demo'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Experimental'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Games'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Games-Chess'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-GeeMail'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Mentoring'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-
Navigators'!
SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PartsBin'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-PDA'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Windows'! SystemOrganization addCategory: #'Etoys-Squeakland-Morphic-Worlds'! SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-Languages'!
- SystemOrganization addCategory: #'Etoys-Squeakland-
Multilingual-Scanning'!
SystemOrganization addCategory: #'Etoys-Squeakland-Multilingual-TextConversion'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Formatter'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-
HTML-Forms'!
SystemOrganization addCategory: #'Etoys-Squeakland-Network-
HTML-Parser'!
SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Parser Entities'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-HTML-Tokenizer'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-MIME'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-TelNet WordNet'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-UI'! SystemOrganization addCategory: #'Etoys-Squeakland-Network-Url'! SystemOrganization addCategory: #'Etoys-Squeakland-Protocols-Type Vocabularies'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Interface'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Ogg'! SystemOrganization addCategory: #'Etoys-Squeakland-Sound-Scores'! SystemOrganization addCategory: #'Etoys-Squeakland-ST80-Morphic'! SystemOrganization addCategory: #'Etoys-Squeakland-SUnit'! SystemOrganization addCategory: #'Etoys-Squeakland-Sugar'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Clipboard-Extended'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Compiler'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Exceptions Kernel'! SystemOrganization addCategory: #'Etoys-Squeakland-System-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Changes'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Explorer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-File Contents Browser'! SystemOrganization addCategory: #'Etoys-Squeakland-Tools-Process
Browser'!
SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ObjectVectors'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTreeTransformer'! SystemOrganization addCategory: #'Etoys-Squeakland-Tweak-Kedama-ParseTree-AttributeDefinition'! SystemOrganization addCategory: #'Etoys-Stacks'! SystemOrganization addCategory: #'Etoys-StarSqueak'! SystemOrganization addCategory: #'Etoys-Support'! SystemOrganization addCategory: #'Etoys-Tests'! SystemOrganization addCategory: #'Etoys-Tile Scriptors'! SystemOrganization addCategory: #'Etoys-Widgets'! SystemOrganization addCategory: #'Etoys-Squeakland-Support'! SystemOrganization addCategory: #'Etoys-Squeakland-SISS-
Serialization'!
SystemOrganization addCategory: #'Etoys-OLPC-Display'! SystemOrganization addCategory: #'Etoys-ReleaseBuilder'! SystemOrganization addCategory: #'Etoys-UserInterfaceTheme'!
Item was removed:
- ----- Method:
GrafPort>>displayScannerForMulti:foreground:background:
ignoreColorChanges:
(in category '*Etoys-Squeakland-accessing') -----
- displayScannerForMulti: para foreground: foreColor background:
backColor
ignoreColorChanges: shadowMode
((para isMemberOf: MultiNewParagraph) or: [para text stringisByteString]) ifTrue: [
^ (MultiDisplayScanner new text: para presentationTexttextStyle: para
textStyle
foreground: foreColor background:backColor fillBlt: self
ignoreColorChanges: shadowMode)setPort: self clone].^ (DisplayScanner new text: para text textStyle: para textStyleforeground: foreColor background: backColorfillBlt: self
ignoreColorChanges: shadowMode)setPort: self clone- !
Item was removed:
- MultiCharacterScanner subclass: #MultiCanvasCharacterScanner
instanceVariableNames: 'canvas fillBlt foregroundColor runXlineY'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>canvas: (in category
'accessing') -----
- canvas: aCanvas
"set the canvas to draw on"canvas ifNotNil: [ self inform: 'initializing twice!!' ].canvas := aCanvas!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>cr (in category 'stop
conditions') -----
- cr
"When a carriage return is encountered, simply increment thepointer
into the paragraph."lastIndex := lastIndex + 1.^false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>crossedX (in category
'stop conditions') -----
- crossedX
"This condition will sometimes be reached 'legally' duringdisplay, when,
for instance the space that caused the line to wrap actuallyextends over
the right boundary. This character is allowed to display, eventhough it
is technically outside or straddling the clipping ectangle sinceit is in
the normal case not visible and is in any case appropriatelyclipped by
the scanner.""self fillLeading."^ true !Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>
displayLine:offset:leftInRun:
(in category 'scanning') -----
- displayLine: textLine offset: offset leftInRun: leftInRun
| nowLeftInRun done startLoc startIndex stopCondition |"largely copied from DisplayScanner's routine"line := textLine.foregroundColor ifNil: [ foregroundColor := Color black ].leftMargin := (line leftMarginForAlignment: alignment) + offsetx.
rightMargin := line rightMargin + offset x.lineY := line top + offset y.lastIndex := textLine first.leftInRun <= 0ifTrue: [self setStopConditions. "also sets the font"nowLeftInRun := text runLengthFor:lastIndex]
ifFalse: [nowLeftInRun := leftInRun].runX := destX := leftMargin.runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last.spaceCount := 0.done := false.[done] whileFalse: ["remember where this portion of the line starts"startLoc := destX@destY.startIndex := lastIndex."find the end of this portion of the line"stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX:rightMargin stopConditions: stopConditions
kern: kern "displaying:false".
"display that portion of the line"canvas drawString: text stringfrom: startIndex to: lastIndexat: startLocfont: fontcolor: foregroundColor."handle the stop condition"done := self perform: stopCondition].^runStopIndex - lastIndex!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>doesDisplaying (in
category 'private') -----
- doesDisplaying
^false "it doesn't do displaying using copyBits"!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>endOfRun (in category
'stop conditions') -----
- endOfRun
"The end of a run in the display case either means that there isactually
a change in the style (run code) to be associated with the stringor the
end of this line has been reached."| runLength |lastIndex = line last ifTrue: [^true].runX := destX.runLength := text runLengthFor: (lastIndex := lastIndex + 1).runStopIndex := lastIndex + (runLength - 1) min: line last.self setStopConditions.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>paddedSpace (in category
'stop
conditions') -----
- paddedSpace
"Each space is a stop condition when the alignment is rightjustified.
Padding must be added to the base width of the space according towhich space in the line this space is and according to the amountof
space that remained at the end of the line when it was composed."destX := destX + spaceWidth + (line justifiedPadFor: spaceCount).lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>setFont (in category
'private')
- setFont
foregroundColor ifNil: [foregroundColor := Color black].super setFont.baselineY := lineY + line baseline.destY := baselineY - font ascent.!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>setStopConditions (in
category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (textStyle alignment = Justified ifTrue:[#paddedSpace]).
- !
Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>tab (in category 'stop
conditions') -----
- tab
destX := (alignment == Justified and: [self leadingTab not])ifTrue: "imbedded tabs in justified text areweird"
[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStyle nextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin].lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiCanvasCharacterScanner>>textColor: (in category
'private') -----
- textColor: color
foregroundColor := color!Item was removed:
- MultiCharacterScanner subclass: #MultiCharacterBlockScanner
instanceVariableNames: 'characterPoint characterIndexlastCharacter lastCharacterExtent lastSpaceOrTabExtent nextLeftMargin specialWidth'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>buildCharacterBlockIn: (in
category 'private') -----
- buildCharacterBlockIn: para
| lineIndex runLength lineStop done stopCondition |"handle nullText"(para numberOfLines = 0 or: [text size = 0])ifTrue: [^ CharacterBlock new stringIndex: 1 "like beingoff end of
string"
text: para texttopLeft: (paraleftMarginForDisplayForLine: 1 alignment: (alignment
ifNil:[textStyle alignment]))
@ paracompositionRectangle top
extent: 0 @ textStyle lineGrid]."find the line"lineIndex := para lineIndexOfTop: characterPoint y.destY := para topAtLineIndex: lineIndex.line := para lines at: lineIndex.rightMargin := para rightMarginForDisplay.(lineIndex = para numberOfLines and:[(destY + line lineHeight) < characterPoint y])ifTrue: ["if beyond lastLine, force search tolast
character"
self characterPointSetX:rightMargin]
ifFalse: [characterPoint y < (paracompositionRectangle) top
ifTrue: ["force search tofirst line"
characterPoint := (para compositionRectangle) topLeft].
characterPoint x > rightMarginifTrue: [selfcharacterPointSetX: rightMargin]].
destX := (leftMargin := para leftMarginForDisplayForLine:lineIndex alignment: (alignment ifNil:[textStyle alignment])).
nextLeftMargin := para leftMarginForDisplayForLine: lineIndex+1alignment: (alignment ifNil:[textStyle alignment]).
lastIndex := line first.self setStopConditions. "also sets font"runLength := (text runLengthFor: line first).characterIndex == nilifTrue: [lineStop := line last "characterBlockAtPoint"]ifFalse: [lineStop := characterIndex"characterBlockForIndex"].
(runStopIndex := lastIndex + (runLength - 1)) > lineStopifTrue: [runStopIndex := lineStop].lastCharacterExtent := 0 @ line lineHeight.spaceCount := 0. done := false.self handleIndentation.[done]whileFalse:[stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX: characterPoint xstopConditions: stopConditions kern: kern."see setStopConditions for stopping conditions for characterblock operations."
self lastCharacterExtentSetX: (font widthOf: (text at:lastIndex)).
(self perform: stopCondition) ifTrue:[characterIndex == nilifTrue: ["characterBlockAtPoint"^ CharacterBlock new stringIndex:lastIndex text: text
topLeft: characterPoint +(font descentKern @ 0)
extent:lastCharacterExtent]
ifFalse: ["characterBlockForIndex"^ CharacterBlock new stringIndex:lastIndex text: text
topLeft: characterPoint +((font descentKern) - kern @ 0)
extent:lastCharacterExtent]]]!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockAtPoint:in:
(in
category 'scanning') -----
- characterBlockAtPoint: aPoint in: aParagraph
"Answer a CharacterBlock for character in aParagraph at pointaPoint. It
is assumed that aPoint has been transformed into coordinatesappropriate
to the text's destination form rectangle and the compositionrectangle."
self initializeFromParagraph: aParagraph clippedBy: aParagraphclippingRectangle.
characterPoint := aPoint.^self buildCharacterBlockIn: aParagraph!Item was removed:
- ----- Method:
MultiCharacterBlockScanner>>characterBlockAtPoint:index:
in:
(in category 'scanning') -----
- characterBlockAtPoint: aPoint index: index in: textLine
"This method is the Morphic characterBlock finder. It combinesMVC's characterBlockAtPoint:, -ForIndex:, andbuildCharcterBlock:in:"
| runLength lineStop done stopCondition |line := textLine.rightMargin := line rightMargin.lastIndex := line first.self setStopConditions. "also sets font"characterIndex := index. " == nil means scanning for point"characterPoint := aPoint.(characterPoint isNil or: [characterPoint y > line bottom])ifTrue: [characterPoint := line bottomRight].(text isEmpty or: [(characterPoint y < line top or:[characterPoint x <
line left])
or: [characterIndex notNil and:[characterIndex < line first]]])
ifTrue: [^ (CharacterBlock new stringIndex: line firsttext: text
topLeft: line leftMargin@line topextent: 0 @ textStyle lineGrid)
textLine: line].destX := leftMargin := line leftMarginForAlignment: alignment.destY := line top.runLength := text runLengthFor: line first.characterIndexifNotNil: [lineStop := characterIndex "scanningfor
index"]
ifNil: [lineStop := line last "scanning for point"].runStopIndex := lastIndex + (runLength - 1) min: lineStop.lastCharacterExtent := 0 @ line lineHeight.spaceCount := 0.done := false.[done] whileFalse:[stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: text string rightX: characterPoint xstopConditions: stopConditions kern: kern."see setStopConditions for stopping conditions forcharacter block
operations."
self lastCharacterExtentSetX: (specialWidthifNil: [font widthOf: (text at: lastIndex)]ifNotNil: [specialWidth]).(self perform: stopCondition) ifTrue:[characterIndexifNil: ["Result forcharacterBlockAtPoint:
"
(stopCondition ~~ #cr and: [lastIndex == line last
and: [ aPoint x >((characterPoint x) + (lastCharacterExtent x / 2))
]])
ifTrue: ["Correct
for right half of last character in line"
^(CharacterBlock new stringIndex: lastIndex + 1
text: text
topLeft: characterPoint + (lastCharacterExtent x @ 0) + (fontdescentKern @ 0)
extent: 0 @ lastCharacterExtent y)
textLine: line ].
^ (CharacterBlock newstringIndex: lastIndex
text: texttopLeft: characterPoint + (font descentKern @ 0)
extent:lastCharacterExtent - (font baseKern @ 0))
textLine: line]
ifNotNil: ["Result forcharacterBlockForIndex: "
^ (CharacterBlock newstringIndex: characterIndex
text: texttopLeft: characterPoint + ((font descentKern) - kern @
extent:lastCharacterExtent)
textLine: line]]]!
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterBlockForIndex:in:
(in
category 'scanning') -----
- characterBlockForIndex: targetIndex in: aParagraph
"Answer a CharacterBlock for character in aParagraph attargetIndex. The
coordinates in the CharacterBlock will be appropriate to theintersection
of the destination form rectangle and the composition rectangle."selfinitializeFromParagraph: aParagraphclippedBy: aParagraph clippingRectangle.characterIndex := targetIndex.characterPoint :=aParagraph rightMarginForDisplay @(aParagraph topAtLineIndex:(aParagraph lineIndexOfCharacterIndex:characterIndex)).
^self buildCharacterBlockIn: aParagraph!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>characterPointSetX: (in
category
'private') -----
- characterPointSetX: xVal
characterPoint := xVal @ characterPoint y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>cr (in category 'stop
conditions') -----
- cr
"Answer a CharacterBlock that specifies the current location ofthe mouse
relative to a carriage return stop condition that has just beenencountered. The ParagraphEditor convention is to denoteselections by
CharacterBlocks, sometimes including the carriage return (cursoris at
the end) and sometimes not (cursor is in the middle of thetext)."
((characterIndex ~= niland: [characterIndex > text size])or: [(line last = text size)and: [(destY + line lineHeight) <characterPoint y]])
ifTrue: ["When off end of string, give data for nextcharacter"
destY := destY + line lineHeight.baselineY := line lineHeight.lastCharacter := nil.characterPoint := (nextLeftMargin ifNil:[leftMargin]) @ destY.
lastIndex := lastIndex + 1.self lastCharacterExtentSetX: 0.^ true].lastCharacter := CR.characterPoint := destX @ destY.self lastCharacterExtentSetX: rightMargin - destX.^true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"Text display has wrapping. The scanner just found a characterpast the x
location of the cursor. We know that the cursor is pointing at acharacter
or before one."| leadingTab currentX |characterIndex == nil ifFalse: ["If the last character of the last line is a space,and it crosses the right margin, then locatingthe character block after it is impossible without thishack."
characterIndex > text size ifTrue: [lastIndex := characterIndex.characterPoint := (nextLeftMargin ifNil:[leftMargin]) @ (destY + line
lineHeight).
^true]].characterPoint x <= (destX + (lastCharacterExtent x // 2))ifTrue: [lastCharacter := (text at: lastIndex).characterPoint := destX @ destY.^true].lastIndex >= line lastifTrue: [lastCharacter := (text at: line last).characterPoint := destX @ destY.^true]."Pointing past middle of a character, return the next character."lastIndex := lastIndex + 1.lastCharacter := text at: lastIndex.currentX := destX + lastCharacterExtent x + kern.self lastCharacterExtentSetX: (font widthOf: lastCharacter).characterPoint := currentX @ destY.lastCharacter = Space ifFalse: [^ true]."Yukky if next character is space or tab."alignment = Justified ifTrue:[self lastCharacterExtentSetX:(lastCharacterExtent x + (linejustifiedPadFor: (spaceCount + 1))).
^ true].true ifTrue: [^ true]."NOTE: I find no value to the following code, and so havedefeated it -
DI"
"See tabForDisplay for illumination on the following awfulness."leadingTab := true.line first to: lastIndex - 1 do:[:index | (text at: index) ~= Tab ifTrue: [leadingTab :=false]].
(alignment ~= Justified or: [leadingTab])ifTrue: [self lastCharacterExtentSetX: (textStylenextTabXFrom: currentX
leftMargin: leftMarginrightMargin: rightMargin) -
currentX]ifFalse: [self lastCharacterExtentSetX:(((currentX + (textStyle
tabWidth -
(linejustifiedTabDeltaFor: spaceCount))) -
currentX) max:0)].
^ true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"Before arriving at the cursor location, the selection hasencountered an
end of run. Answer false if the selection continues, trueotherwise. Set
up indexes for building the appropriate CharacterBlock."| runLength lineStop |(((characterIndex ~~ nil and:[runStopIndex < characterIndex and: [runStopIndex < textsize]])
or: [characterIndex == nil and: [lastIndex <line last]]) or: [
((lastIndex < line last)and: [((text at: lastIndex) leadingChar~=
(text at: lastIndex+1)
leadingChar)
and: [lastIndex ~=characterIndex]])])
ifTrue: ["We're really at the end of a real run."runLength := (text runLengthFor:(lastIndex := lastIndex + 1)).
characterIndex ~~ nilifTrue: [lineStop :=characterIndex "scanning for index"]
ifFalse: [lineStop := linelast "scanning for point"].
(runStopIndex := lastIndex + (runLength -1)) > lineStop
ifTrue: [runStopIndex :=lineStop].
self setStopConditions.^false].lastCharacter := text at: lastIndex.characterPoint := destX @ destY.((lastCharacter = Space and: [alignment = Justified])or: [lastCharacter = Tab and: [lastSpaceOrTabExtentnotNil]])
ifTrue: [lastCharacterExtent := lastSpaceOrTabExtent].characterIndex ~~ nilifTrue: ["If scanning for an index and we've stopped onthat index,
then we back destX off by the width ofthe
character stopped on
(it will be pointing at the right side ofthe character) and return"
runStopIndex = characterIndexifTrue: [self characterPointSetX:destX - lastCharacterExtent x.
^true]."Otherwise the requested index wasgreater
than the length of the
string. Return string size + 1 as index,indicate further that off
the
string by setting character to nil andthe
extent to 0."
lastIndex := lastIndex + 1.lastCharacter := nil.self lastCharacterExtentSetX: 0.^true]."Scanning for a point and either off the end of the line or offthe end
of the string."
runStopIndex = text sizeifTrue: ["off end of string"lastIndex := lastIndex + 1.lastCharacter := nil.self lastCharacterExtentSetX: 0.^true]."just off end of line without crossing x"lastIndex := lastIndex + 1.^true!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>indentationLevel: (in
category
'scanning') -----
- indentationLevel: anInteger
super indentationLevel: anInteger.nextLeftMargin := leftMargin.indentationLevel timesRepeat: [nextLeftMargin := textStyle nextTabXFrom: nextLeftMarginleftMargin: leftMarginrightMargin: rightMargin]!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>lastCharacterExtentSetX:
(in category 'private') -----
- lastCharacterExtentSetX: xVal
lastCharacterExtent := xVal @ lastCharacterExtent y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>lastSpaceOrTabExtentSetX:
(in
category 'private') -----
- lastSpaceOrTabExtentSetX: xVal
lastSpaceOrTabExtent := xVal @ lastSpaceOrTabExtent y!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>paddedSpace (in category
'stop
conditions') -----
- paddedSpace
"When the line is justified, the spaces will not be the same asthe font's
space character. A padding of extra space must be considered intrying
to find which character the cursor is pointing at. Answer whetherthe
scanning has crossed the cursor."| pad |pad := 0.spaceCount := spaceCount + 1.pad := line justifiedPadFor: spaceCount.lastSpaceOrTabExtent := lastCharacterExtent copy.self lastSpaceOrTabExtentSetX: spaceWidth + pad.(destX + lastSpaceOrTabExtent x) >= characterPoint xifTrue: [lastCharacterExtent := lastSpaceOrTabExtentcopy.
^self crossedX].lastIndex := lastIndex + 1.destX := destX + lastSpaceOrTabExtent x.^ false- !
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>placeEmbeddedObject: (in
category 'scanning') -----
- placeEmbeddedObject: anchoredMorph
"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false].specialWidth := anchoredMorph width.^ true!Item was removed:
- ----- Method:
MultiCharacterBlockScanner>>scanMultiCharactersCombiningFr
om:to:in:rightX:stopConditions:kern:
(in category 'scanning') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| encoding f nextDestX maxAscii startEncoding char charValue |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
char := (sourceString at: lastIndex).charValue := char charCode.charValue > maxAscii ifTrue: [charValue := maxAscii].(encoding = 0 and: [(stopConditions at: charValue + 1) ~~nil]) ifTrue:
[
^ stops at: charValue + 1].nextDestX := destX + (self widthOf: char inFont: font).nextDestX > rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>setFont (in category 'stop
conditions') -----
- setFont
specialWidth := nil.super setFont!Item was removed:
- ----- Method: MultiCharacterBlockScanner>>setStopConditions (in
category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (alignment = Justified ifTrue:[#paddedSpace]).
- !
Item was removed:
- ----- Method: MultiCharacterBlockScanner>>tab (in category 'stop
conditions') -----
- tab
| currentX |currentX := (alignment == Justified and: [self leadingTab not])ifTrue: "imbedded tabs in justified text areweird"
[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStylenextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin].lastSpaceOrTabExtent := lastCharacterExtent copy.self lastSpaceOrTabExtentSetX: (currentX - destX max: 0).currentX >= characterPoint xifTrue:[lastCharacterExtent := lastSpaceOrTabExtentcopy.
^ self crossedX].destX := currentX.lastIndex := lastIndex + 1.^false!Item was removed:
- Object subclass: #MultiCharacterScanner
instanceVariableNames: 'destX lastIndex xTable destYstopConditions text
textStyle alignment leftMargin rightMargin font line runStopIndex
spaceCount
spaceWidth emphasisCode kern indentationLevel wantsColumnBreaks
presentation
presentationLine numOfComposition baselineY firstDestX'
classVariableNames: 'DefaultStopConditions NilConditionPaddedSpaceCondition SpaceCondition'
poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCharacterScanner class>>initialize (in category
'class
initialization') -----
- initialize
- "
MultiCharacterScanner initialize- "
| a |a := Array new: 258.a at: 1 + 1 put: #embeddedObject.a at: Tab asciiValue + 1 put: #tab.a at: CR asciiValue + 1 put: #cr.a at: EndOfRun put: #endOfRun.a at: CrossedX put: #crossedX.NilCondition := a copy.DefaultStopConditions := a copy.PaddedSpaceCondition := a copy.PaddedSpaceCondition at: Space asciiValue + 1 put: #paddedSpace.SpaceCondition := a copy.SpaceCondition at: Space asciiValue + 1 put: #space.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>addCharToPresentation: (in
category
'multilingual scanning') -----
- addCharToPresentation: char
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>addEmphasis: (in category
'private')
- addEmphasis: code
"Set the bold-ital-under-strike emphasis."emphasisCode := emphasisCode bitOr: code!Item was removed:
- ----- Method: MultiCharacterScanner>>addKern: (in category 'private')
- addKern: kernDelta
"Set the current kern amount."kern := kern + kernDelta!Item was removed:
- ----- Method:
MultiCharacterScanner>>basicScanCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- basicScanCharactersFrom: startIndex to: stopIndex in: sourceString
rightX:
rightX stopConditions: stops kern: kernDelta
"Primitive. This is the inner loop of text display--but seescanCharactersFrom: to:rightX: which would get the string,stopConditions and displaying from the instance. March throughsource
String from startIndex to stopIndex. If any character is flaggedwith a
non-nil entry in stops, then return the corresponding value.Determine
width of each character from xTable, indexed by map.If dextX would exceed rightX, then return stops at: 258.Advance destX by the width of the character. If stopIndex hasbeen
reached, then return stops at: 257. Optional.See Object documentation whatIsAPrimitive."| ascii nextDestX char |<primitive: 103>lastIndex := startIndex.[lastIndex <= stopIndex]whileTrue:[char := (sourceString at: lastIndex).ascii := char asciiValue + 1.(stops at: ascii) == nil ifFalse: [^stops at:ascii].
"Note: The following is querying the font aboutthe width
since the primitive may have failed due to anon-trivial
mapping of characters to glyphs or a non-existingxTable."
nextDestX := destX + (font widthOf: char).nextDestX > rightX ifTrue: [^stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1].lastIndex := stopIndex.^stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterScanner>>columnBreak (in category
'scanning')
- columnBreak
^true!Item was removed:
- ----- Method: MultiCharacterScanner>>combinableChar:for: (in category
'scanner methods') -----
- combinableChar: char for: prevEntity
- !
Item was removed:
- ----- Method: MultiCharacterScanner>>embeddedObject (in category
'scanning') -----
- embeddedObject
| savedIndex |savedIndex := lastIndex.text attributesAt: lastIndex do:[:attr|attr anchoredMorph ifNotNil:["Following may look strange but logic getsreversed.
If the morph fits on this line we're not done(return false for true)
and if the morph won't fit we're done (returntrue
for false)"
(self placeEmbeddedObject: attr anchoredMorph)ifFalse:[^true]]].
lastIndex := savedIndex + 1. "for multiple(!!) embedded morphs"^false!Item was removed:
- ----- Method: MultiCharacterScanner>>handleIndentation (in category
'scanning') -----
- handleIndentation
self indentationLevel timesRepeat: [self plainTab]!Item was removed:
- ----- Method: MultiCharacterScanner>>indentationLevel (in category
'scanning') -----
- indentationLevel
"return the number of tabs that are currently being placed at thebeginning of each line"
^indentationLevel ifNil:[0]!Item was removed:
- ----- Method: MultiCharacterScanner>>indentationLevel: (in category
'scanning') -----
- indentationLevel: anInteger
"set the number of tabs to put at the beginning of each line"indentationLevel := anInteger!Item was removed:
- ----- Method: MultiCharacterScanner>>initialize (in category
'initialize')
- initialize
destX := destY := leftMargin := 0.!Item was removed:
- ----- Method: MultiCharacterScanner>>initializeFromParagraph:
clippedBy:
(in category 'private') -----
- initializeFromParagraph: aParagraph clippedBy: clippingRectangle
text := aParagraph text.textStyle := aParagraph textStyle.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>initializeStringMeasurer (in
category
'initialize') -----
- initializeStringMeasurer
stopConditions := Array new: 258.stopConditions at: CrossedX put: #crossedX.stopConditions at: EndOfRun put: #endOfRun.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>isBreakableAt:in:in: (in
category 'scanner methods') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ encodingClass isBreakableAt: index in: sourceString.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>leadingTab (in category
'scanning')
- leadingTab
"return true if only tabs lie to the left"line first to: lastIndex do:[:i | (text at: i) == Tab ifFalse: [^ false]].^ true!Item was removed:
- ----- Method: MultiCharacterScanner>>measureString:inFont:from:to:
(in category 'scanning') -----
- measureString: aString inFont: aFont from: startIndex to: stopIndex
"WARNING: In order to use this method the receiver has to be setup using
#initializeStringMeasurer"
destX := destY := lastIndex := 0.baselineY := aFont ascent.xTable := aFont xTable.font := aFont. " added Dec 03, 2004 "- " map := aFont characterToGlyphMap."
self scanCharactersFrom: startIndex to: stopIndex in: aStringrightX:
999999 stopConditions: stopConditions kern: 0.
^destX!Item was removed:
- ----- Method: MultiCharacterScanner>>placeEmbeddedObject: (in
category 'scanning') -----
- placeEmbeddedObject: anchoredMorph
"Place the anchoredMorph or return false if it cannot be placed.In any event, advance destX by its width."| w |"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].destX := destX + (w := anchoredMorph width).(destX > rightMargin and: [(leftMargin + w) <= rightMargin])ifTrue: ["Won't fit, but would on next line"^ false].lastIndex := lastIndex + 1.self setFont. "Force recalculation of emphasis for next run"^ true!Item was removed:
- ----- Method: MultiCharacterScanner>>plainTab (in category
'scanning')
- plainTab
"This is the basic method of adjusting destX for a tab."destX := (alignment == Justified and: [self leadingTab not])ifTrue: "embedded tabs in justified text areweird"
[destX + (textStyle tabWidth - (linejustifiedTabDeltaFor: spaceCount))
max: destX]
ifFalse:[textStyle nextTabXFrom: destXleftMargin: leftMarginrightMargin: rightMargin]!Item was removed:
- ----- Method: MultiCharacterScanner>>registerBreakableIndex (in
category
'multilingual scanning') -----
- registerBreakableIndex
"Record left x and character index of the line-wrappable point.The default implementation here does nothing."^ false.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>removeLastCharFromPresentation
(in
category 'multilingual scanning') -----
- removeLastCharFromPresentation
- !
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- scanCharactersFrom: startIndex to: stopIndex in: sourceString rightX:
rightX stopConditions: stops kern: kernDelta
| startEncoding selector |(sourceString isByteString) ifTrue: [^ selfbasicScanCharactersFrom:
startIndex to: stopIndex in: sourceString rightX: rightX stopConditions: stops kern: kernDelta.].
(sourceString isWideString) ifTrue: [startIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^stops at:
EndOfRun].
startEncoding := (sourceString at: startIndex)leadingChar.
selector := EncodedCharSet scanSelectorAt: startEncoding.^ self perform: selector withArguments: (Array with:startIndex with:
stopIndex with: sourceString with: rightX with: stopConditions with: kernDelta).
].^ stops at: EndOfRun- !
Item was removed:
- ----- Method:
MultiCharacterScanner>>scanJapaneseCharactersFrom:to:
in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanJapaneseCharactersFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii."xTable := f xTable.maxAscii := xTable size - 2."spaceWidth := f widthOf: Space.] ifFalse: [(font isMemberOf: HostFont) ifTrue: [f := font.maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].].[lastIndex <= stopIndex] whileTrue: ["self halt."encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:(EncodedCharSet
charsetAt: encoding)) ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue:[^
stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:
stopConditions:kern:
(in category 'scanner methods') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| charCode encoding f maxAscii startEncoding combining combinedcombiningIndex c |
lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := font widthOf: Space.] ifFalse: [maxAscii := font maxAscii.spaceWidth := font widthOf: Space.].combining := nil.[lastIndex <= stopIndex] whileTrue: [charCode := (sourceString at: lastIndex) charCode.c := (sourceString at: lastIndex).combining ifNil: [combining := CombinedChar new.combining add: c.combiningIndex := lastIndex.lastIndex := lastIndex + 1.] ifNotNil: [(combining add: c) ifFalse: [self addCharToPresentation: (combined :=combining combined).
combining := CombinedChar new.combining add: c.charCode := combined charCode.encoding := combined leadingChar.encoding ~= startEncoding ifTrue:[lastIndex := lastIndex - 1.
(encoding = 0 and:[(stopConditions at: charCode + 1) ~~ nil])
ifTrue: [
^ stops at: charCode + 1] ifFalse: [^ stops at: EndOfRun].].charCode > maxAscii ifTrue: [charCode :=maxAscii].
""(encoding = 0 and: [(stopConditions at:charCode + 1) ~~ nil]) ifTrue:
[
combining ifNotNil: [selfaddCharToPresentation: (combining combined).
].^ stops at: charCode + 1].(self isBreakableAt: lastIndex in:sourceString in: Latin1Environment)
ifTrue: [
self registerBreakableIndex.].destX > rightX ifTrue: [destX ~= firstDestX ifTrue: [lastIndex :=combiningIndex.
selfremoveLastCharFromPresentation.
^ stops at: CrossedX]].combiningIndex := lastIndex.lastIndex := lastIndex + 1.] ifTrue: [lastIndex := lastIndex + 1.numOfComposition := numOfComposition + 1.].].].lastIndex := stopIndex.combining ifNotNil: [combined := combining combined.self addCharToPresentation: combined."assuming that there is always enough space for at leastone character".
destX := destX + (self widthOf: combined inFont: font).].^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersFrom:to:in:
rightX:stopConditions:kern:
(in category 'scanning') -----
- scanMultiCharactersFrom: startIndex to: stopIndex in: sourceString
rightX:
rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [ascii < stopConditions size and:[(stopConditions
at: ascii + 1) ~~ nil]]) ifTrue: [^ stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:Latin1Environment)
ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [destX ~= firstDestX ifTrue:[^
stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanMultiCharactersR2LFrom:to:
in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanMultiCharactersR2LFrom: startIndex to: stopIndex in: sourceString
rightX: rightX stopConditions: stops kern: kernDelta
"Note that 'rightX' really means 'endX' in R2L context. Ie.rightX is
usually smaller than destX."
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:Latin1Environment)
ifTrue: [
self registerBreakableIndex.].nextDestX := destX - (font widthOf: (sourceString at:lastIndex)).
nextDestX < rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX - kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method:
MultiCharacterScanner>>scanSimChineseCharactersFrom:
to:in:rightX:stopConditions:kern:
(in category 'scanner methods') -----
- scanSimChineseCharactersFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| ascii encoding f nextDestX maxAscii startEncoding |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii."xTable := f xTable.maxAscii := xTable size - 2."spaceWidth := f widthOf: Space.] ifFalse: [(font isMemberOf: HostFont) ifTrue: [f := font.maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].].[lastIndex <= stopIndex] whileTrue: ["self halt."encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
ascii := (sourceString at: lastIndex) charCode.ascii > maxAscii ifTrue: [ascii := maxAscii].(encoding = 0 and: [(stopConditions at: ascii + 1) ~~nil]) ifTrue: [^
stops at: ascii + 1].
(self isBreakableAt: lastIndex in: sourceString in:(EncodedCharSet
charsetAt: encoding)) ifTrue: [
self registerBreakableIndex.].nextDestX := destX + (font widthOf: (sourceString at:lastIndex)).
nextDestX > rightX ifTrue: [firstDestX ~= destX ifTrue:[^
stops at:
CrossedX]].
destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiCharacterScanner>>setActualFont: (in category
'private') -----
- setActualFont: aFont
"Set the basal font to an isolated font reference."font := aFont!Item was removed:
- ----- Method: MultiCharacterScanner>>setAlignment: (in category
'private')
- setAlignment: style
alignment := style.!Item was removed:
- ----- Method: MultiCharacterScanner>>setConditionArray: (in category
'private') -----
- setConditionArray: aSymbol
aSymbol == #paddedSpace ifTrue: [^stopConditions :=PaddedSpaceCondition
"copy"].
"aSymbol == #space ifTrue: [^stopConditions := SpaceConditioncopy]."
aSymbol == nil ifTrue: [^stopConditions := NilCondition "copy"].self error: 'undefined stopcondition for space character'.- !
Item was removed:
- ----- Method: MultiCharacterScanner>>setFont (in category 'private')
- setFont
| priorFont |"Set the font and other emphasis."priorFont := font.text == nil ifFalse:[emphasisCode := 0.kern := 0.indentationLevel := 0.alignment := textStyle alignment.font := nil.(text attributesAt: lastIndex forStyle: textStyle)do: [:att | att emphasizeScanner: self]].font == nil ifTrue:[self setFont: textStyle defaultFontIndex].font := font emphasized: emphasisCode.priorFont ifNotNil: [destX := destX + priorFont descentKern].destX := destX - font descentKern."NOTE: next statement should be removed when clipping works"leftMargin ifNotNil: [destX := destX max: leftMargin].kern := kern - font baseKern."Install various parameters from the font."spaceWidth := font widthOf: Space.xTable := font xTable.- " map := font characterToGlyphMap."
stopConditions := DefaultStopConditions.!Item was removed:
- ----- Method: MultiCharacterScanner>>setFont: (in category 'private')
- setFont: fontNumber
"Set the font by number from the textStyle."self setActualFont: (textStyle fontAt: fontNumber)!Item was removed:
- ----- Method: MultiCharacterScanner>>text:textStyle: (in category
'private') -----
- text: t textStyle: ts
text := t.textStyle := ts!Item was removed:
- ----- Method: MultiCharacterScanner>>textColor: (in category
'private')
- textColor: ignored
"Overridden in DisplayScanner"!Item was removed:
- ----- Method: MultiCharacterScanner>>wantsColumnBreaks: (in category
'initialize') -----
- wantsColumnBreaks: aBoolean
wantsColumnBreaks := aBoolean!Item was removed:
- ----- Method: MultiCharacterScanner>>widthOf:inFont: (in category
'multilingual scanning') -----
- widthOf: char inFont: aFont
(char isMemberOf: CombinedChar) ifTrue: [^ aFont widthOf: char base.] ifFalse: [^ aFont widthOf: char.].- !
Item was removed:
- MultiCharacterScanner subclass: #MultiCompositionScanner
instanceVariableNames: 'spaceX lineHeight baseline breakableIndexlineHeightAtBreak baselineAtBreak breakAtSpace lastWidth'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiCompositionScanner>>addCharToPresentation: (in
category
'multilingual scanning') -----
- addCharToPresentation: char
presentation nextPut: char.lastWidth := self widthOf: char inFont: font.destX := destX + lastWidth.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>columnBreak (in category 'stop
conditions') -----
- columnBreak
"Answer true. Set up values for the text line interval currentlybeing
composed."line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.spaceX := destX.line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin - spaceX.^true!Item was removed:
- ----- Method:
MultiCompositionScanner>>composeFrom:inRectangle:
firstLine:leftSide:rightSide:
(in category 'scanning') -----
- composeFrom: startIndex inRectangle: lineRectangle
firstLine: firstLine leftSide: leftSide rightSide: rightSide"Answer an instance of TextLineInterval that represents the nextline in
the paragraph."
| runLength done stopCondition |"Set up margins"leftMargin := lineRectangle left.leftSide ifTrue: [leftMargin := leftMargin +(firstLine ifTrue:[textStyle firstIndent]
ifFalse:[textStyle restIndent])].
destX := spaceX := leftMargin.firstDestX := destX.rightMargin := lineRectangle right.rightSide ifTrue: [rightMargin := rightMargin - textStylerightIndent].
lastIndex := startIndex. "scanning sets last index"destY := lineRectangle top.lineHeight := baseline := 0. "Will be increased by setFont"self setStopConditions. "also sets font"runLength := text runLengthFor: startIndex.runStopIndex := (lastIndex := startIndex) + (runLength - 1).line := (TextLine start: lastIndex stop: 0 internalSpaces: 0paddingWidth: 0)
rectangle: lineRectangle.presentationLine := (TextLine start: lastIndex stop: 0internalSpaces: 0
paddingWidth: 0)
rectangle: lineRectangle.numOfComposition := 0.spaceCount := 0.self handleIndentation.leftMargin := destX.line leftMargin: leftMargin.presentationLine leftMargin: leftMargin.presentation := TextStream on: (Text fromString: (WideString new:text
size)).
done := false.[done]whileFalse:[stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: text string rightX: rightMarginstopConditions: stopConditions
kern: kern."See setStopConditions for stopping conditionsfor
composing."
(self perform: stopCondition)ifTrue: [presentationLine lineHeight:lineHeight + textStyle leading
baseline:baseline
- textStyle leading.
^ line lineHeight:lineHeight + textStyle leading
baseline:baseline
- textStyle leading]]!
Item was removed:
- ----- Method:
MultiCompositionScanner>>composeLine:fromCharacterIndex:inParagraph: (in category 'scanning') -----
- composeLine: lineIndex fromCharacterIndex: startIndex inParagraph:
aParagraph
"Answer an instance of TextLineInterval that represents the nextline in
the paragraph."
| runLength done stopCondition |destX := spaceX := leftMargin := aParagraphleftMarginForCompositionForLine: lineIndex.
destY := 0.rightMargin := aParagraph rightMarginForComposition.leftMargin >= rightMargin ifTrue: [self error: 'No room betweenmargins
to compose'].
lastIndex := startIndex. "scanning sets last index"lineHeight := textStyle lineGrid. "may be increased bysetFont:..."
baseline := textStyle baseline.baselineY := destY + baseline.self setStopConditions. "also sets font"self handleIndentation.runLength := text runLengthFor: startIndex.runStopIndex := (lastIndex := startIndex) + (runLength - 1).line := TextLineIntervalstart: lastIndexstop: 0internalSpaces: 0paddingWidth: 0.presentationLine := TextLineIntervalstart: lastIndexstop: 0internalSpaces: 0paddingWidth: 0.numOfComposition := 0.presentation := TextStream on: (Text fromString: (WideString new:text
size)).
spaceCount := 0.done := false.[done]whileFalse:[stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: text string rightX: rightMarginstopConditions: stopConditions
kern: kern."See setStopConditions for stopping conditionsfor
composing."
(self perform: stopCondition)ifTrue: [presentationLine lineHeight:lineHeight + textStyle leading
baseline:baseline
- textStyle leading.
^line lineHeight:lineHeight + textStyle leading
baseline:baseline
- textStyle leading]]!
Item was removed:
- ----- Method: MultiCompositionScanner>>cr (in category 'stop
conditions')
- cr
"Answer true. Set up values for the text line interval currentlybeing
composed."line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.spaceX := destX.line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin - spaceX.^true!Item was removed:
- ----- Method: MultiCompositionScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"There is a word that has fallen across the right edge of thecomposition
rectangle. This signals the need for wrapping which is done tothe
last
space that was encountered, as recorded by the space stopcondition."
(breakAtSpace) ifTrue: [spaceCount >= 1 ifTrue:["The common case. First back off to the space atwhich we wrap."
line stop: breakableIndex.presentationLine stop: breakableIndex -numOfComposition.
lineHeight := lineHeightAtBreak.baseline := baselineAtBreak.spaceCount := spaceCount - 1.breakableIndex := breakableIndex - 1."Check to see if any spaces preceding the one atwhich we wrap.
Double space after punctuation, mostlikely."
[(spaceCount > 1 and: [(text at: breakableIndex)=
Space])]
whileTrue:[spaceCount := spaceCount - 1."Account for backing over a runwhich might
change width of space."font := text fontAt:breakableIndex withStyle: textStyle.
breakableIndex := breakableIndex
spaceX := spaceX - (font widthOf:Space)].
line paddingWidth: rightMargin - spaceX.presentationLine paddingWidth: rightMargin -spaceX.
presentationLine internalSpaces: spaceCount.line internalSpaces: spaceCount]ifFalse:["Neither internal nor trailing spaces -- almostnever happens."
lastIndex := lastIndex - 1.[destX <= rightMargin]whileFalse:[destX := destX - (font widthOf:(text at: lastIndex)).
lastIndex := lastIndex - 1].spaceX := destX.line paddingWidth: rightMargin - destX.presentationLine paddingWidth: rightMargin -destX.
presentationLine stop: (lastIndex max: linefirst).
line stop: (lastIndex max: line first)].^true].(breakableIndex isNil or: [breakableIndex < line first]) ifTrue:[
"Any breakable point in this line. Just wrap lastcharacter."
breakableIndex := lastIndex - 1.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.]."It wasn't a space, but anyway this is where we break the line."line stop: breakableIndex.presentationLine stop: breakableIndex.lineHeight := lineHeightAtBreak.baseline := baselineAtBreak.^ true.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"Answer true if scanning has reached the end of the paragraph.Otherwise step conditions (mostly install potential new font) andanswer
false."| runLength |lastIndex = text sizeifTrue: [line stop: lastIndex.presentationLine stop: lastIndex -numOfComposition.
spaceX := destX.line paddingWidth: rightMargin - destX.presentationLine paddingWidth: rightMargin -destX.
^true]ifFalse: ["(text at: lastIndex) charCode = 32 ifTrue:[destX
:= destX +
spaceWidth]."
runLength := (text runLengthFor: (lastIndex :=lastIndex + 1)).
runStopIndex := lastIndex + (runLength - 1).self setStopConditions.^false]- !
Item was removed:
- ----- Method: MultiCompositionScanner>>forParagraph: (in category
'intialize-release') -----
- forParagraph: aParagraph
"Initialize the receiver for scanning the given paragraph."selfinitializeFromParagraph: aParagraphclippedBy: aParagraph clippingRectangle.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>getPresentation (in category
'multilingual scanning') -----
- getPresentation
^ presentation contents.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>getPresentationLine (in
category
'multilingual scanning') -----
- getPresentationLine
^ presentationLine.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>isBreakableAt:in:in: (in
category
'multilingual scanning') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ encodingClass isBreakableAt: index in: sourceString.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>placeEmbeddedObject: (in
category
'stop conditions') -----
- placeEmbeddedObject: anchoredMorph
| descent |"Workaround: The following should really use #textAnchorType"anchoredMorph relativeTextAnchorPosition ifNotNil:[^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: ["It doesn'tfit"
"But if it's the first character then leave it here"lastIndex < line first ifFalse:[line stop: lastIndex-1.^ false]].descent := lineHeight - baseline.lineHeight := lineHeight max: anchoredMorph height.baseline := lineHeight - descent.line stop: lastIndex.presentationLine stop: lastIndex - numOfComposition.^ true!Item was removed:
- ----- Method: MultiCompositionScanner>>presentation (in category
'accessing') -----
- presentation
^ presentation.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>presentationLine (in category
'accessing') -----
- presentationLine
^ presentationLine.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>registerBreakableIndex (in
category
'multilingual scanning') -----
- registerBreakableIndex
"Record left x and character index of the line-wrappable point.Used for wrap-around. Answer whether the character has crossedthe
right edge of the composition rectangle of the paragraph."(text at: lastIndex) = Character space ifTrue: [breakAtSpace := true.spaceX := destX.spaceCount := spaceCount + 1.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.breakableIndex := lastIndex.destX > rightMargin ifTrue: [^self crossedX].] ifFalse: [breakAtSpace := false.lineHeightAtBreak := lineHeight.baselineAtBreak := baseline.breakableIndex := lastIndex - 1.].^ false.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>removeLastCharFromPresentation
(in
category 'multilingual scanning') -----
- removeLastCharFromPresentation
presentation ifNotNil: [presentation position: presentation position - 1.].destX := destX - lastWidth.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>rightX (in category
'accessing')
- rightX
"Meaningful only when a line has just been composed -- refers tothe
line most recently composed. This is a subtrefuge to allow foreasy
resizing of a composition rectangle to the width of the maximumline.
Useful only when there is only one line in the form or when eachline
is terminated by a carriage return. Handy for sizing menus andlists."
breakAtSpace ifTrue: [^ spaceX].^ destX.- !
Item was removed:
- ----- Method: MultiCompositionScanner>>setActualFont: (in category
'scanning') -----
- setActualFont: aFont
"Keep track of max height and ascent for auto lineheight"| descent |super setActualFont: aFont."' ', lastIndex printString, ' ' displayAt: (lastIndex *15)@0."
lineHeight == nilifTrue: [descent := font descent.baseline := font ascent.lineHeight := baseline + descent]ifFalse: [descent := lineHeight - baseline max: fontdescent.
baseline := baseline max: font ascent.lineHeight := lineHeight max: baseline +descent]!
Item was removed:
- ----- Method: MultiCompositionScanner>>setFont (in category 'stop
conditions') -----
- setFont
super setFont.breakAtSpace := false.wantsColumnBreaks == true ifTrue: [stopConditions := stopConditions copy.stopConditions at: TextComposer characterForColumnBreakasciiValue + 1
put: #columnBreak.
].- !
Item was removed:
- ----- Method: MultiCompositionScanner>>setStopConditions (in category
'stop conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont!Item was removed:
- ----- Method: MultiCompositionScanner>>tab (in category 'stop
conditions')
- tab
"Advance destination x according to tab settings in theparagraph's
textStyle. Answer whether the character has crossed the rightedge
of
the composition rectangle of the paragraph."destX := textStylenextTabXFrom: destX leftMargin:leftMargin
rightMargin: rightMargin.
destX > rightMargin ifTrue: [^self crossedX].lastIndex := lastIndex + 1.^false- !
Item was removed:
- MultiCharacterScanner subclass: #MultiDisplayScanner
instanceVariableNames: 'bitBlt lineY runX foregroundColorbackgroundColor
fillBlt lineHeight paragraph paragraphColor morphicOffset ignoreColorChanges'
classVariableNames: ''poolDictionaries: ''category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiDisplayScanner class>>defaultFont (in category
'queries') -----
- defaultFont
^ TextStyle defaultFont!Item was removed:
- ----- Method: MultiDisplayScanner>>cr (in category 'stop conditions')
- cr
"When a carriage return is encountered, simply increment thepointer
into the paragraph."lastIndex := lastIndex + 1.^false!Item was removed:
- ----- Method: MultiDisplayScanner>>crossedX (in category 'stop
conditions') -----
- crossedX
"This condition will sometimes be reached 'legally' duringdisplay, when,
for instance the space that caused the line to wrap actuallyextends over
the right boundary. This character is allowed to display, eventhough it
is technically outside or straddling the clipping ectangle sinceit is in
the normal case not visible and is in any case appropriatelyclipped by
the scanner."^ true !Item was removed:
- ----- Method: MultiDisplayScanner>>displayLine:offset:leftInRun: (in
category 'scanning') -----
- displayLine: textLine offset: offset leftInRun: leftInRun
"The call on the primitive (scanCharactersFrom:to:in:rightX:)will be
interrupted according to an array of stop conditions passed to the
scanner
at which time the code to handle the stop condition is run and the call
on
the primitive continued until a stop condition returns true (which means
the
line has terminated). leftInRun is the # of characters left to scan in
the
current run; when 0, it is time to call setStopConditions."
| done stopCondition nowLeftInRun startIndex string lastPos |line := textLine.morphicOffset := offset.lineY := line top + offset y.lineHeight := line lineHeight.rightMargin := line rightMargin + offset x.lastIndex := line first.leftInRun <= 0 ifTrue: [self setStopConditions].leftMargin := (line leftMarginForAlignment: alignment) + offsetx.
destX := runX := leftMargin.fillBlt == nil ifFalse:["Not right"fillBlt destX: line left destY: lineYwidth: line width left height: lineHeight;copyBits].
lastIndex := line first.leftInRun <= 0ifTrue: [nowLeftInRun := text runLengthFor: lastIndex]ifFalse: [nowLeftInRun := leftInRun].baselineY := lineY + line baseline.destY := baselineY - font ascent.runStopIndex := lastIndex + (nowLeftInRun - 1) min: line last.spaceCount := 0.done := false.string := text string.[done] whileFalse:[startIndex := lastIndex.lastPos := destX@destY.stopCondition := self scanCharactersFrom: lastIndex to:runStopIndex
in: string rightX:rightMargin stopConditions: stopConditions
kern: kern.lastIndex >= startIndex ifTrue:[font displayString: string on: bitBltfrom: startIndex"XXXX: The following is an interesting bug. All stopConditionsexept
#endOfRun
have lastIndex past the last character displayed.#endOfRun sets it *on*
the character.
If we display up until lastIndex then we will alsodisplay
invisible
characters like
CR and tab. This problem should be fixed in the scanner(i.e., position
lastIndex
consistently) but I don't want to deal with the falloutright now so we
keep the
fix minimally invasive."to: (stopCondition == #endOfRunifTrue:[lastIndex]
ifFalse:[lastIndex-1])
at: lastPos kern: kern baselineY:baselineY].
"see setStopConditions for stopping conditions fordisplaying."
done := self perform: stopCondition."lastIndex > runStopIndex ifTrue: [done := true]."].^ runStopIndex - lastIndex "Number of characters remaining inthe current run"!
Item was removed:
- ----- Method: MultiDisplayScanner>>displayLines:in:clippedBy: (in
category
'MVC-compatibility') -----
- displayLines: linesInterval in: aParagraph clippedBy:
visibleRectangle
"The central display routine. The call on the primitive(scanCharactersFrom:to:in:rightX:) will be interrupted accordingto an
array of stop conditions passed to the scanner at which time thecode to
handle the stop condition is run and the call on the primitivecontinued
until a stop condition returns true (which means the line hasterminated)."| runLength done stopCondition leftInRun startIndex stringlastPos
|
"leftInRun is the # of characters left to scan in the currentrun;
when 0, it is time to call 'self setStopConditions'"morphicOffset := 0@0.leftInRun := 0.self initializeFromParagraph: aParagraph clippedBy:visibleRectangle.
ignoreColorChanges := false.paragraph := aParagraph.foregroundColor := paragraphColor := aParagraph foregroundColor.backgroundColor := aParagraph backgroundColor.aParagraph backgroundColor isTransparentifTrue: [fillBlt := nil]ifFalse: [fillBlt := bitBlt copy. "Blt to fill spaces,tabs, margins"
fillBlt sourceForm: nil; sourceOrigin:0@0.
fillBlt fillColor: aParagraphbackgroundColor].
rightMargin := aParagraph rightMarginForDisplay.lineY := aParagraph topAtLineIndex: linesInterval first.bitBlt destForm deferUpdatesIn: visibleRectangle while: [linesInterval do:[:lineIndex |leftMargin := aParagraphleftMarginForDisplayForLine: lineIndex
alignment: (alignment ifNil:[textStyle alignment]).
destX := (runX := leftMargin).line := aParagraph lines at: lineIndex.lineHeight := line lineHeight.fillBlt == nil ifFalse:[fillBlt destX: visibleRectangle leftdestY: lineY
width: visibleRectangle widthheight: lineHeight; copyBits].
lastIndex := line first.leftInRun <= 0ifTrue: [self setStopConditions. "alsosets the font"
leftInRun := textrunLengthFor: line first].
baselineY := lineY + line baseline.destY := baselineY - font ascent. "Should havehappened in setFont"
runLength := leftInRun.runStopIndex := lastIndex + (runLength - 1) min:line last.
leftInRun := leftInRun - (runStopIndex -lastIndex
- 1).
spaceCount := 0.done := false.string := text string.self handleIndentation.[done] whileFalse:[startIndex := lastIndex.lastPos := destX@destY.stopCondition := self scanCharactersFrom:lastIndex to: runStopIndex
in: stringrightX:
rightMargin stopConditions: stopConditions
kern: kern.lastIndex >= startIndex ifTrue:[font displayString: string on:bitBlt
from: startIndex to:lastIndex at: lastPos kern: kern baselineY:
baselineY].
"see setStopConditions for stoppingconditions for displaying."
done := self perform: stopCondition].fillBlt == nil ifFalse:[fillBlt destX: destX destY: lineY width:visibleRectangle right-destX
height: lineHeight; copyBits].
lineY := lineY + lineHeight]]!Item was removed:
- ----- Method: MultiDisplayScanner>>endOfRun (in category 'stop
conditions') -----
- endOfRun
"The end of a run in the display case either means that there isactually
a change in the style (run code) to be associated with the stringor the
end of this line has been reached."| runLength |lastIndex = line last ifTrue: [^true].runX := destX.runLength := text runLengthFor: (lastIndex := lastIndex + 1).runStopIndex := lastIndex + (runLength - 1) min: line last.self setStopConditions.^ false!Item was removed:
- ----- Method: MultiDisplayScanner>>initializeFromParagraph:clippedBy:
(in
category 'MVC-compatibility') -----
- initializeFromParagraph: aParagraph clippedBy: clippingRectangle
super initializeFromParagraph: aParagraph clippedBy:clippingRectangle.
bitBlt := BitBlt asGrafPort toForm: aParagraph destinationForm.bitBlt sourceX: 0; width: 0. "Init BitBlt so that the firstcall to a
primitive will not fail"
bitBlt combinationRule: Form paint.bitBlt colorMap:(Bitmap with: 0 "Assumes 1-bit deep fonts"with: (bitBlt destForm pixelValueFor:aParagraph foregroundColor)).
bitBlt clipRect: clippingRectangle.- !
Item was removed:
- ----- Method: MultiDisplayScanner>>isBreakableAt:in:in: (in category
'multilingual scanning') -----
- isBreakableAt: index in: sourceString in: encodingClass
^ false.- !
Item was removed:
- ----- Method: MultiDisplayScanner>>paddedSpace (in category 'stop
conditions') -----
- paddedSpace
"Each space is a stop condition when the alignment is rightjustified.
Padding must be added to the base width of the space according towhich space in the line this space is and according to the amountof
space that remained at the end of the line when it was composed."spaceCount := spaceCount + 1.destX := destX + spaceWidth + (line justifiedPadFor: spaceCount).lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method: MultiDisplayScanner>>placeEmbeddedObject: (in category
'scanning') -----
- placeEmbeddedObject: anchoredMorph
anchoredMorph relativeTextAnchorPosition ifNotNil:[anchoredMorph position:anchoredMorph relativeTextAnchorPosition +(anchoredMorph owner textBounds origin x @ 0)- (0@morphicOffset y) + (0@lineY).^true].(super placeEmbeddedObject: anchoredMorph) ifFalse: [^ false].anchoredMorph isMorph ifTrue: [anchoredMorph position: ((destX - anchoredMorphwidth)@lineY) -
morphicOffset
] ifFalse: [destY := lineY.baselineY := lineY + anchoredMorph height..runX := destX.anchoredMorphdisplayOn: bitBlt destFormat: destX - anchoredMorph width @ destYclippingBox: bitBlt clipRect].^ true!Item was removed:
- ----- Method: MultiDisplayScanner>>plainTab (in category 'stop
conditions') -----
- plainTab
| oldX |oldX := destX.super plainTab.fillBlt == nil ifFalse:[fillBlt destX: oldX destY: destY width: destX - oldXheight: font
height; copyBits]!
Item was removed:
- ----- Method: MultiDisplayScanner>>presentationText: (in category
'private') -----
- presentationText: t
text := t.- !
Item was removed:
- ----- Method:
MultiDisplayScanner>>scanMultiCharactersCombiningFrom:to:in:rightX:
stopConditions:kern:
(in category 'multilingual scanning') -----
- scanMultiCharactersCombiningFrom: startIndex to: stopIndex in:
sourceString rightX: rightX stopConditions: stops kern: kernDelta
| encoding f nextDestX maxAscii startEncoding char charValue |lastIndex := startIndex.lastIndex > stopIndex ifTrue: [lastIndex := stopIndex. ^ stopsat: EndOfRun].
startEncoding := (sourceString at: startIndex) leadingChar.font ifNil: [font := (TextConstants at: #DefaultMultiStyle)fontArray at:
1].
((font isMemberOf: StrikeFontSet) or: [font isKindOf:TTCFontSet]) ifTrue: [
[f := font fontArray at: startEncoding + 1]on: Exception do: [:ex | f := font fontArray at:1].
f ifNil: [ f := font fontArray at: 1].maxAscii := f maxAscii.spaceWidth := f widthOf: Space.] ifFalse: [maxAscii := font maxAscii.].[lastIndex <= stopIndex] whileTrue: [encoding := (sourceString at: lastIndex) leadingChar.encoding ~= startEncoding ifTrue: [lastIndex := lastIndex
- ^ stops
at: EndOfRun].
char := (sourceString at: lastIndex).charValue := char charCode.charValue > maxAscii ifTrue: [charValue := maxAscii].(encoding = 0 and: [(stopConditions at: charValue + 1) ~~nil]) ifTrue:
[
^ stops at: charValue + 1].nextDestX := destX + (self widthOf: char inFont: font).nextDestX > rightX ifTrue: [^ stops at: CrossedX].destX := nextDestX + kernDelta.lastIndex := lastIndex + 1.].lastIndex := stopIndex.^ stops at: EndOfRun!Item was removed:
- ----- Method: MultiDisplayScanner>>setDestForm: (in category
'private')
- setDestForm: df
bitBlt setDestForm: df.!Item was removed:
- ----- Method: MultiDisplayScanner>>setFont (in category 'private')
- setFont
foregroundColor := paragraphColor.super setFont. "Sets font and emphasis bits, and maybeforegroundColor"
font installOn: bitBlt foregroundColor: foregroundColorbackgroundColor:
Color transparent.
text ifNotNil:[baselineY := lineY + line baseline.destY := baselineY - font ascent].- !
Item was removed:
- ----- Method: MultiDisplayScanner>>setPort: (in category 'private')
- setPort: aBitBlt
"Install the BitBlt to use"bitBlt := aBitBlt.bitBlt sourceX: 0; width: 0. "Init BitBlt so that the firstcall to a
primitive will not fail"
bitBlt sourceForm: nil. "Make sure font installation won't beconfused"
- !
Item was removed:
- ----- Method: MultiDisplayScanner>>setStopConditions (in category
'stop
conditions') -----
- setStopConditions
"Set the font and the stop conditions for the current run."self setFont.self setConditionArray: (alignment = Justified ifTrue:[#paddedSpace]).
- "
alignment = Justified ifTrue: [stopConditions == DefaultStopConditionsifTrue:[stopConditions := stopConditions copy].stopConditions at: Space asciiValue + 1 put:#paddedSpace]
- "!
Item was removed:
- ----- Method: MultiDisplayScanner>>tab (in category 'stop
conditions')
- tab
self plainTab.lastIndex := lastIndex + 1.^ false!Item was removed:
- ----- Method:
MultiDisplayScanner>>text:textStyle:foreground:background:fillBlt:
ignoreColorChanges:
(in category 'private') -----
- text: t textStyle: ts foreground: foreColor background: backColor
fillBlt:
blt ignoreColorChanges: shadowMode
text := t.textStyle := ts.foregroundColor := paragraphColor := foreColor.(backgroundColor := backColor) isTransparent ifFalse:[fillBlt := blt.fillBlt fillColor: backgroundColor].ignoreColorChanges := shadowMode!Item was removed:
- ----- Method: MultiDisplayScanner>>textColor: (in category 'private')
- textColor: textColor
ignoreColorChanges ifTrue: [^ self].foregroundColor := textColor!Item was removed:
- NewParagraph subclass: #MultiNewParagraph
instanceVariableNames: 'presentationText presentationLines'classVariableNames: ''poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiNewParagraph>>displayOn:using:at: (in category
'fonts-display') -----
- displayOn: aCanvas using: displayScanner at: somePosition
"Send all visible lines to the displayScanner for display"| visibleRectangle offset leftInRun line |visibleRectangle := aCanvas clipRect.offset := somePosition - positionWhenComposed.leftInRun := 0.(self lineIndexForPoint: visibleRectangle topLeft)to: (self lineIndexForPoint: visibleRectanglebottomRight)
do: [:i | line := lines at: i.self displaySelectionInLine: line on: aCanvas.line first <= line last ifTrue:[leftInRun := displayScanner displayLine:line
offset:offset leftInRun: leftInRun]].
- !
Item was removed:
- ----- Method: MultiNewParagraph>>displayOnTest:using:at: (in category
'fonts-display') -----
- displayOnTest: aCanvas using: displayScanner at: somePosition
"Send all visible lines to the displayScanner for display"| visibleRectangle offset leftInRun line |(presentationText isNil or: [presentationLines isNil]) ifTrue: [^ self displayOn: aCanvas using: displayScanner at:somePosition.
].visibleRectangle := aCanvas clipRect.offset := somePosition - positionWhenComposed.leftInRun := 0.(self lineIndexForPoint: visibleRectangle topLeft)to: (self lineIndexForPoint: visibleRectanglebottomRight)
do: [:i | line := presentationLines at: i.self displaySelectionInLine: line on: aCanvas.line first <= line last ifTrue:[leftInRun := displayScanner displayLine:line
offset:offset leftInRun: leftInRun]].
- !
Item was removed:
- ----- Method:
MultiNewParagraph>>multiComposeLinesFrom:to:delta:into:priorLines:atY:
(in
category 'composition') -----
- multiComposeLinesFrom: start to: stop delta: delta into: lineColl
priorLines: priorLines
atY: startingY"While the section from start to stop has changed, compositionmay
ripple
all the way to the end of the text. However in a rectangular container,
if
we ever find a line beginning with the same character as before (ie corresponding to delta in the old lines), then we can just copy the old lines from there to the end of the container, with adjusted indices and y-values"
| newResult composer presentationInfo |composer := MultiTextComposer new.presentationLines := nil.presentationText := nil.newResult := composermultiComposeLinesFrom: startto: stopdelta: deltainto: lineCollpriorLines: priorLinesatY: startingYtextStyle: textStyletext: textcontainer: containerwantsColumnBreaks: wantsColumnBreaks == true.lines := newResult first asArray.maxRightX := newResult second.presentationInfo := composer getPresentationInfo.presentationLines := presentationInfo first asArray.presentationText := presentationInfo second."maxRightX printString displayAt: 0@0."^maxRightX- !
Item was removed:
- ----- Method: MultiNewParagraph>>presentationLines (in category
'accessing') -----
- presentationLines
^ presentationLines.- !
Item was removed:
- ----- Method: MultiNewParagraph>>presentationText (in category
'accessing') -----
- presentationText
^ presentationText.- !
Item was removed:
- TextComposer subclass: #MultiTextComposer
instanceVariableNames: 'presentation presentationLines'classVariableNames: ''poolDictionaries: 'TextConstants'category: 'Etoys-Squeakland-Multilingual-Scanning'!Item was removed:
- ----- Method: MultiTextComposer>>composeEachRectangleIn: (in category
'as
yet unclassified') -----
- composeEachRectangleIn: rectangles
| myLine lastChar |1 to: rectangles size do: [:i |currCharIndex <= theText size ifFalse: [^false].myLine := scannercomposeFrom: currCharIndexinRectangle: (rectangles at: i)firstLine: isFirstLineleftSide: i=1rightSide: i=rectangles size.lines addLast: myLine.presentationLines addLast: scanner getPresentationLine.presentation ifNil: [presentation := scannergetPresentation]
ifNotNil: [presentation := presentation, scannergetPresentation].
actualHeight := actualHeight max: myLine lineHeight."includes font
changes"
currCharIndex := myLine last + 1.lastChar := theText at: myLine last.lastChar = Character cr ifTrue: [^#cr].wantsColumnBreaks ifTrue: [lastChar = TextComposer characterForColumnBreakifTrue:
[^#columnBreak].
].].^false!Item was removed:
- ----- Method: MultiTextComposer>>getPresentationInfo (in category 'as
yet
unclassified') -----
- getPresentationInfo
^ Array with: presentationLines with: presentation.- !
Item was removed:
- ----- Method:
MultiTextComposer>>multiComposeLinesFrom:to:delta:into:priorLines:atY:
textStyle:text:container:wantsColumnBreaks:
(in category 'as yet unclassified') -----
- multiComposeLinesFrom: argStart to: argStop delta: argDelta into:
argLinesCollection priorLines: argPriorLines atY: argStartY textStyle: argTextStyle text: argText container: argContainer wantsColumnBreaks: argWantsColumnBreaks
wantsColumnBreaks := argWantsColumnBreaks.lines := argLinesCollection.presentationLines := argLinesCollection copy.theTextStyle := argTextStyle.theText := argText.theContainer := argContainer.deltaCharIndex := argDelta.currCharIndex := startCharIndex := argStart.stopCharIndex := argStop.prevLines := argPriorLines.currentY := argStartY.defaultLineHeight := theTextStyle lineGrid.maxRightX := theContainer left.possibleSlide := stopCharIndex < theText size and: [theContainerisMemberOf: Rectangle].
nowSliding := false.prevIndex := 1.scanner := MultiCompositionScanner new text: theText textStyle:theTextStyle.
scanner wantsColumnBreaks: wantsColumnBreaks.isFirstLine := true.self composeAllLines.isFirstLine ifTrue: ["No space in container or empty text"selfaddNullLineWithIndex: startCharIndexandRectangle: (theContainer topLeft extent:0@defaultLineHeight)
] ifFalse: [self fixupLastLineIfCR].^{lines asArray. maxRightX}- !
On 10/8/17, Bob Arning arning315@comcast.net wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
Seems to be the regular way to do this whereas
SmartRefStream>>initKnownRenames
looks more like a hack. However it is not etoys specific as it is present in Squeak 5.0 (screen shot)
#initKnownRenames is called in
SmartRefStream>>initShapeDicts
It has a flag #bobconv
Looks like unfinished business. Bob, what would you see as the way forward?
initShapeDicts "Initialize me. "
self flag: #bobconv.
"These must stay constant. When structures read in, then things can change." steady := {Array. Dictionary. Association. ByteString. SmallInteger. Character} asSet.
renamed ifNil: [ renamed := Dictionary new. "(old class name symbol -> new class name)" renamedConv := Dictionary new "(oldClassNameSymbol -> conversionSelectorInNewClass)" ]. self initKnownRenames
On 10/8/17 5:33 PM, Tobias Pape wrote:
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
Screen shot
#initKnownRenames
present in a non-etoys 5.0 image.
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
On 10/8/17, Bob Arning arning315@comcast.net wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
Seems to be the regular way to do this whereas
SmartRefStream>>initKnownRenames
looks more like a hack. However it is not etoys specific as it is present in Squeak 5.0 (screen shot)
#initKnownRenames is called in
SmartRefStream>>initShapeDicts
It has a flag #bobconv
Looks like unfinished business. Bob, what would you see as the way forward?
initShapeDicts "Initialize me. "
self flag: #bobconv.
"These must stay constant. When structures read in, then things can change." steady := {Array. Dictionary. Association. ByteString. SmallInteger. Character} asSet.
renamed ifNil: [ renamed := Dictionary new. "(old class name symbol -> new class name)" renamedConv := Dictionary new "(oldClassNameSymbol -> conversionSelectorInNewClass)" ]. self initKnownRenames
On 10/8/17 5:33 PM, Tobias Pape wrote:
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
Tobias refers to
SmartRefStream>>multiNewParagraphttfclpomsswfpp0
^ NewParagraph
I wonder what
#multiNewParagraphttfclpomsswfpp0 is about.
Tobias, what do you mean by "shadow"
" So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'... "
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
Screen shot
#initKnownRenames
present in a non-etoys 5.0 image.
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
On 10/8/17, Bob Arning arning315@comcast.net wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
Seems to be the regular way to do this whereas
SmartRefStream>>initKnownRenames
looks more like a hack. However it is not etoys specific as it is present in Squeak 5.0 (screen shot)
#initKnownRenames is called in
SmartRefStream>>initShapeDicts
It has a flag #bobconv
Looks like unfinished business. Bob, what would you see as the way forward?
initShapeDicts "Initialize me. "
self flag: #bobconv.
"These must stay constant. When structures read in, then things can change." steady := {Array. Dictionary. Association. ByteString. SmallInteger. Character} asSet.
renamed ifNil: [ renamed := Dictionary new. "(old class name symbol -> new class name)" renamedConv := Dictionary new "(oldClassNameSymbol -> conversionSelectorInNewClass)" ]. self initKnownRenames
On 10/8/17 5:33 PM, Tobias Pape wrote:
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
There are no senders of
#multiNewParagraphttfclpomsswfpp0
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
Tobias refers to
SmartRefStream>>multiNewParagraphttfclpomsswfpp0
^ NewParagraphI wonder what
#multiNewParagraphttfclpomsswfpp0 is about.
Tobias, what do you mean by "shadow"
" So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'... "
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
Screen shot
#initKnownRenames
present in a non-etoys 5.0 image.
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
On 10/8/17, Bob Arning arning315@comcast.net wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
Seems to be the regular way to do this whereas
SmartRefStream>>initKnownRenames
looks more like a hack. However it is not etoys specific as it is present in Squeak 5.0 (screen shot)
#initKnownRenames is called in
SmartRefStream>>initShapeDicts
It has a flag #bobconv
Looks like unfinished business. Bob, what would you see as the way forward?
initShapeDicts "Initialize me. "
self flag: #bobconv.
"These must stay constant. When structures read in, then things can change." steady := {Array. Dictionary. Association. ByteString. SmallInteger. Character} asSet.
renamed ifNil: [ renamed := Dictionary new. "(old class name symbol -> new class name)" renamedConv := Dictionary new "(oldClassNameSymbol -> conversionSelectorInNewClass)" ]. self initKnownRenames
On 10/8/17 5:33 PM, Tobias Pape wrote:
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
On 09.10.2017, at 00:23, H. Hirzel hannes.hirzel@gmail.com wrote:
There are no senders of
#multiNewParagraphttfclpomsswfpp0
Yes but look here ("> " form me, "..." left out) SmartRefStream>>mapClass: incoming "..." | cls oldVer sel nm |
nm := renamed at: incoming ifAbsent: [incoming]. "allow pre-mapping around collisions" "> nm = 'MultiNewParagraph'" "..." oldVer := self versionSymbol: (structures at: nm). "> (structure at: nm) = #(0 text textStyle firstCharacterIndex container lines positionWhenComposed offsetToEnd maxRightX selectionStart selectionStop wantsColumnBreaks focused presentationText presentationLines)" "> oldNer = 'ttfclpomsswfpp0' " sel := nm asString. sel at: 1 put: (sel at: 1) asLowercase. "sel = multiNewParagraph sel := sel, oldVer. "i.e. #rectangleoc4" "sel = multiNewParagraphttfclpomsswfpp0" Symbol hasInterned: sel ifTrue: [:symb | (self class canUnderstand: sel asSymbol) ifTrue: [ reshaped ifNil: [reshaped := Dictionary new]. "> HERE IS THE SEND" cls := self perform: sel asSymbol]]. "This class will take responsibility" cls ifNil: [cls := self writeClassRenameMethod: sel was: nm fromInstVars: (structures at: nm). cls isString ifTrue: [cls := nil]]. cls ifNotNil: [renamed at: nm put: cls name]. ^ cls
Also look at all the methods in the *-conversion categories:
abstractStringx0 alansTextPlusMorphbosfcebbmsopssrsggshtt0 bookPageMorphbosfcepcbbfgcc0 clippingMorphbosfcep0 clippingMorphbosfcepc0 componentLikeModelbosfcebbmsop0 currentProjectRefactoringx0 dropShadowMorphbosfces0 layoutMorphbosfcepbbochvimol0 layoutMorphbosfcepcbbochvimol0 morphicEventtcbks0 morphicSoundEventtcbkss0 multiStringx0 multiSymbolx0 myMorphbosfce0 newMorphicEventts0 sMInstallationRegistryiim0 sMMaintainableObjectimcunsucromrf0 scrollControllermvslrrsmsms0 transparentColorrcc0 variableSpacerbosfcebb0 worldMorphbosfcebbfgccpmcpbttloiairfidcuwhavcdsll0
Best regards -Tobias
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
Tobias refers to
SmartRefStream>>multiNewParagraphttfclpomsswfpp0
^ NewParagraphI wonder what
#multiNewParagraphttfclpomsswfpp0 is about.
Tobias, what do you mean by "shadow"
" So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'... "
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
Screen shot
#initKnownRenames
present in a non-etoys 5.0 image.
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
On 10/8/17, Bob Arning arning315@comcast.net wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
Seems to be the regular way to do this whereas
SmartRefStream>>initKnownRenames
looks more like a hack. However it is not etoys specific as it is present in Squeak 5.0 (screen shot)
#initKnownRenames is called in
SmartRefStream>>initShapeDicts
It has a flag #bobconv
Looks like unfinished business. Bob, what would you see as the way forward?
initShapeDicts "Initialize me. "
self flag: #bobconv.
"These must stay constant. When structures read in, then things can change." steady := {Array. Dictionary. Association. ByteString. SmallInteger. Character} asSet.
renamed ifNil: [ renamed := Dictionary new. "(old class name symbol -> new class name)" renamedConv := Dictionary new "(oldClassNameSymbol -> conversionSelectorInNewClass)" ]. self initKnownRenames
On 10/8/17 5:33 PM, Tobias Pape wrote:
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
Thank you Tobias, for this.
contrariwise to what I wrote earlier
#initKnownRenames
is not a hack but part of the regular conversion process.
'renamed' is an instance variable used in the #mapClass method you refer to.
The comment says ' allow for premapping'
mapClass: incoming "See if the old class named nm exists. If so, return it. If not, map it to a new class, and save the mapping in renamed. "
| cls oldVer sel nm |
self flag: #bobconv.
nm := renamed at: incoming ifAbsent: [incoming]. "allow pre-mapping around collisions"
-----------------
So the question is :
Can we handle the replacement
#MultiNewParagraph --> #NewParagraph
with pre-mapping or do we need something more.
On 10/9/17, Tobias Pape Das.Linux@gmx.de wrote:
On 09.10.2017, at 00:23, H. Hirzel hannes.hirzel@gmail.com wrote:
There are no senders of
#multiNewParagraphttfclpomsswfpp0
Yes but look here ("> " form me, "..." left out) SmartRefStream>>mapClass: incoming "..." | cls oldVer sel nm |
nm := renamed at: incoming ifAbsent: [incoming]. "allow pre-mapping around collisions" "> nm = 'MultiNewParagraph'" "..." oldVer := self versionSymbol: (structures at: nm). "> (structure at: nm) = #(0 text textStyle firstCharacterIndex container lines positionWhenComposed offsetToEnd maxRightX selectionStart selectionStop wantsColumnBreaks focused presentationText presentationLines)" "> oldNer = 'ttfclpomsswfpp0' " sel := nm asString. sel at: 1 put: (sel at: 1) asLowercase. "sel = multiNewParagraph sel := sel, oldVer. "i.e. #rectangleoc4" "sel = multiNewParagraphttfclpomsswfpp0" Symbol hasInterned: sel ifTrue: [:symb | (self class canUnderstand: sel asSymbol) ifTrue: [ reshaped ifNil: [reshaped := Dictionary new]. "> HERE IS THE SEND" cls := self perform: sel asSymbol]]. "This class will take responsibility" cls ifNil: [cls := self writeClassRenameMethod: sel was: nm fromInstVars: (structures at: nm). cls isString ifTrue: [cls := nil]]. cls ifNotNil: [renamed at: nm put: cls name]. ^ cls
Also look at all the methods in the *-conversion categories:
abstractStringx0 alansTextPlusMorphbosfcebbmsopssrsggshtt0 bookPageMorphbosfcepcbbfgcc0 clippingMorphbosfcep0 clippingMorphbosfcepc0 componentLikeModelbosfcebbmsop0 currentProjectRefactoringx0 dropShadowMorphbosfces0 layoutMorphbosfcepbbochvimol0 layoutMorphbosfcepcbbochvimol0 morphicEventtcbks0 morphicSoundEventtcbkss0 multiStringx0 multiSymbolx0 myMorphbosfce0 newMorphicEventts0 sMInstallationRegistryiim0 sMMaintainableObjectimcunsucromrf0 scrollControllermvslrrsmsms0 transparentColorrcc0 variableSpacerbosfcebb0 worldMorphbosfcebbfgccpmcpbttloiairfidcuwhavcdsll0
Best regards -Tobias
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
Tobias refers to
SmartRefStream>>multiNewParagraphttfclpomsswfpp0
^ NewParagraphI wonder what
#multiNewParagraphttfclpomsswfpp0 is about.
Tobias, what do you mean by "shadow"
" So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'... "
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
Screen shot
#initKnownRenames
present in a non-etoys 5.0 image.
On 10/9/17, H. Hirzel hannes.hirzel@gmail.com wrote:
On 10/8/17, Bob Arning arning315@comcast.net wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
Seems to be the regular way to do this whereas
SmartRefStream>>initKnownRenames
looks more like a hack. However it is not etoys specific as it is present in Squeak 5.0 (screen shot)
#initKnownRenames is called in
SmartRefStream>>initShapeDicts
It has a flag #bobconv
Looks like unfinished business. Bob, what would you see as the way forward?
initShapeDicts "Initialize me. "
self flag: #bobconv.
"These must stay constant. When structures read in, then things can change." steady := {Array. Dictionary. Association. ByteString. SmallInteger. Character} asSet.
renamed ifNil: [ renamed := Dictionary new. "(old class name symbol -> new class name)" renamedConv := Dictionary new "(oldClassNameSymbol -> conversionSelectorInNewClass)" ]. self initKnownRenames
On 10/8/17 5:33 PM, Tobias Pape wrote: > So 'presentationText' and 'presentationLines' will shadow > 'caretRect' > and > 'showCaret'...
Well, #initKnownRenamescame after my involvement, but there are several options available here:
- #initKnownRenames can specify a class to be substitued for another encountered in the input stream, whether the class in the stream exists in the image or not. So, you can just create something different if you like.
- #multiNewParagraphttfclpomsswfpp0, etc. (in SmartRefStream)) allows specific versions (all the ttfcl... stuff) to be substituted with something different.
- #convertToCurrentVersion:refStream: (in various classes) allows newly created instances to get their inst vars modified to current standards, like if 'name' used to be a String and now it's a Name, you might use this to fix old instances that still have Strings
So, if the issue is about fixing paragraphs or projects coming in from a ref stream, then #convertToCurrentVersion:refStream: will probably let you do what you want.
On 10/8/17 6:17 PM, H. Hirzel wrote:
On 10/8/17, Bob Arning arning315@comcast.net wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
Seems to be the regular way to do this whereas
SmartRefStream>>initKnownRenames
looks more like a hack. However it is not etoys specific as it is present in Squeak 5.0 (screen shot)
#initKnownRenames is called in
SmartRefStream>>initShapeDicts
It has a flag #bobconv
Looks like unfinished business. Bob, what would you see as the way forward?
initShapeDicts "Initialize me. "
self flag: #bobconv.
"These must stay constant. When structures read in, then things can change." steady := {Array. Dictionary. Association. ByteString. SmallInteger. Character} asSet.
renamed ifNil: [ renamed := Dictionary new. "(old class name symbol -> new class name)" renamedConv := Dictionary new "(oldClassNameSymbol -> conversionSelectorInNewClass)" ]. self initKnownRenames
On 10/8/17 5:33 PM, Tobias Pape wrote:
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
Oh, my! Thank you for that pointer.
I was unaware of the conventions for using #objectsForDataStream: and #convertToCurrentVersion:refStream: and instead I did overrides of #storeDataOn: and #readDataFrom:size: in one of my projects (UTCDateAndTime). I guess I had better go take a second look at it.
Thanks, Dave
On Sun, Oct 08, 2017 at 05:46:54PM -0400, Bob Arning wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
On 10/8/17 5:33 PM, Tobias Pape wrote:
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
On 10/9/17, David T. Lewis lewis@mail.msen.com wrote:
Oh, my! Thank you for that pointer.
I was unaware of the conventions for using #objectsForDataStream:
#objectsForDataStream: ?
I do not find this in a 5.0 and a 6.0a image.
and
#convertToCurrentVersion:refStream: and instead I did overrides of #storeDataOn: and #readDataFrom:size: in one of my projects (UTCDateAndTime). I guess I had better go take a second look at it.
SmartRefStream section: Conversion of old objects is done by a method http://wiki.squeak.org/squeak/2317
then refers to
SmartRefStream renaming example http://wiki.squeak.org/squeak/2287
Thanks, Dave
On Sun, Oct 08, 2017 at 05:46:54PM -0400, Bob Arning wrote:
#convertToCurrentVersion:refStream: might be used to fix up such problems
On 10/8/17 5:33 PM, Tobias Pape wrote:
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
slight misspelling
objectForDataStream:
On 10/8/17 6:40 PM, H. Hirzel wrote:
On 10/9/17, David T. Lewislewis@mail.msen.com wrote:
Oh, my! Thank you for that pointer.
I was unaware of the conventions for using #objectsForDataStream:
#objectsForDataStream: ?I do not find this in a 5.0 and a 6.0a image.
On Sun, Oct 8, 2017 at 11:33 PM, Tobias Pape Das.Linux@gmx.de wrote:
On 08.10.2017, at 22:02, H. Hirzel hannes.hirzel@gmail.com wrote:
Found out that probably the following fix has to be made in addition
(see thread MorphicProject subclass: EtoysProject )
Or this:
SmartRefStream>>multiNewParagraphttfclpomsswfpp0
^ NewParagraphBut note that In Etoys MultiNewParagraph looks like this:
ProtoObject #() Object #() NewParagraph #('text' 'textStyle' 'firstCharacterIndex' 'container' 'lines' 'positionWhenComposed' 'offsetToEnd' 'maxRightX' 'selectionStart' 'selectionStop' 'wantsColumnBreaks' 'focused') MultiNewParagraph #('presentationText' 'presentationLines') While in Squeak5/trunk it looks like that:
ProtoObject #() Object #() NewParagraph #('text' 'textStyle' 'firstCharacterIndex' 'container' 'lines' 'positionWhenComposed' 'offsetToEnd' 'maxRightX' 'selectionStart' 'selectionStop' 'wantsColumnBreaks' 'focused' 'caretRect' 'showCaret' 'caretColor' 'selectionColor' 'unfocusedSelectionColor')
So 'presentationText' and 'presentationLines' will shadow 'caretRect' and 'showCaret'...
In theory the loading process will notice that the class structure changed and map inst vars by name, so there should be no shadowing. As Bob wrote, convertToCurrentVersion:refStream: gets a dictionary of variables.
- Bert -
squeak-dev@lists.squeakfoundation.org
-
Bert Freudenberg -
Bob Arning -
commits＠source.squeak.org -
David T. Lewis -
H. Hirzel -
Nicolas Cellier -
Tobias Pape