Squeak-dev January 2021

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38 participants
172 discussions

UK Smalltalk User Group meeting - Wednesday, January 27th
by Giovanni Corriga 15 Jan '21

15 Jan '21

The next meeting of the UK Smalltalk User Group will be on Wednesday, January 27th. For this presentation, guest speaker Michael Engel will bring us back to basics with a bare-metal Smalltalk-80 system for the Raspberry Pi. In 2020, the Xerox PARC research laboratory celebrated its 50th anniversary. One of the most important developments coming out of PARC is the Smalltalk system, which integrates a programming language, operating system and graphical user interface. Today, most of the Smalltalk systems run in hosted mode on a conventional operating system. This contradicts Dan Ingalls' idea that "an operating system is a collection of things that don't fit inside a language; there shouldn't be one". Accordingly, original Smalltalk systems, e.g. for the Alto workstation, ran on the bare metal of the computer. In this talk, we will discuss an approach to create a bare-metal Smalltalk-80 implementation for the Raspberry Pi ( https://www.raspberrypi.org/ ), a popular family of ARM-based systems. Interesting aspects that will be investigated are the overhead involved in bringing the system to life and debugging it, adapting the system to different Raspberry Pi models, and constraints due to properties of the hardware and the Smalltalk-80 VM. Michael Engel ( https://multicores.org/ ) is associate professor for compiler design at the Norwegian University of Science and Technology (NTNU) in Trondheim/Norway. His research interests lie on the intersection of compilers, operating systems and modern hardware. In previous positions, Michael worked at different German Universities as well as Oracle Labs Cambridge and Leeds Beckett University. He also was founder and CTO of kernel concepts, the first German company working with embedded Linux systems in 1999. Given the current COVID-19 restrictions, this will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/UKSTUG/events/cbklbrycccbkc/ ) to receive the meeting details. Don’t forget to bring your laptop and drinks!

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Squeak and Sound
by Bruce O'Neel 14 Jan '21

14 Jan '21

Hi, I just installed Mint 20.1, which is based on the most recent Ubuntu, on a x86-64 system ran apt install libpulse-dev and then built the VM at the git HEAD, and unlike before sound works perfectly. This is with a 5.3 image. Off to try this on my PI 400... cheers bruce

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[ANN] Update on my current work
by Stéphane Rollandin 14 Jan '21

14 Jan '21

Hello all, I have just released an updated image of my current work, including the development snapshot of a 2.5D adventure game engine: http://www.zogotounga.net/comp/squeak/rogue.htm See details and demos in the image. -- New stuff (that I can think of right now): improved controls tactical navigation a different representation for dark areas incremental floor textures nicer baobabs! many more monsters, better animated spiders and rock golems a recursive dungeon floor spawner terrains (water, lava) doors utility methods for color tweaking, better gradient fills dice-rolling improvements again, this is all described or demo-ed in the image itself -- Best, Stef

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The Trunk: Morphic-mt.1717.mcz
by commits＠source.squeak.org 13 Jan '21

13 Jan '21

Marcel Taeumel uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-mt.1717.mcz ==================== Summary ==================== Name: Morphic-mt.1717 Author: mt Time: 13 January 2021, 4:41:17.950847 pm UUID: 7b18d879-1009-e04b-b0b2-fe5ad7fe4376 Ancestors: Morphic-mt.1716 Improves documentation to maybe avoid issues such as the ones fixes in EToys-mt.416 and MorphicExtras-mt.282. =============== Diff against Morphic-mt.1716 =============== Item was changed: ----- Method: Morph>>minimumHeight (in category 'geometry - layout') ----- minimumHeight + "Wrapper for layout-specific function to avoid confusion. Please configure through #minimumHeight: or #minHeight: or by overriding #minHeight. Please do not override #minimumHeight since the layout mechanism will not call it." - "Wrapper for layout-specific function to avoid confusion." ^ self minHeight! Item was changed: ----- Method: Morph>>minimumWidth (in category 'geometry - layout') ----- minimumWidth + "Wrapper for layout-specific function to avoid confusion. Please configure through #minimumWidth: or #minWidth: or by overriding #minWidth. Please do not override #minimumWidth since the layout mechanism will not call it." - "Wrapper for layout-specific function to avoid confusion." ^ self minWidth!

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The Trunk: MorphicExtras-mt.282.mcz
by commits＠source.squeak.org 13 Jan '21

13 Jan '21

Marcel Taeumel uploaded a new version of MorphicExtras to project The Trunk: http://source.squeak.org/trunk/MorphicExtras-mt.282.mcz ==================== Summary ==================== Name: MorphicExtras-mt.282 Author: mt Time: 13 January 2021, 4:39:27.045847 pm UUID: 95c69503-32a5-6348-89d5-201549e7b662 Ancestors: MorphicExtras-mt.281 Fixes minor layout issue. =============== Diff against MorphicExtras-mt.281 =============== Item was added: + ----- Method: ObjectsTool>>minHeight (in category 'layout') ----- + minHeight + ^(self minimumBottom - self top) max: 280! Item was added: + ----- Method: ObjectsTool>>minWidth (in category 'layout') ----- + minWidth + "Answer a width that assures that the alphabet fits in two rows. For olpc, this is increased in order to make the Connectors category not too absurdly tall." + + ^ 400! Item was removed: - ----- Method: ObjectsTool>>minimumHeight (in category 'layout') ----- - minimumHeight - ^(self minimumBottom - self top) max: 280! Item was removed: - ----- Method: ObjectsTool>>minimumWidth (in category 'layout') ----- - minimumWidth - "Answer a width that assures that the alphabet fits in two rows. For olpc, this is increased in order to make the Connectors category not too absurdly tall." - - ^ 400!

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The Trunk: EToys-mt.416.mcz
by commits＠source.squeak.org 13 Jan '21

13 Jan '21

Marcel Taeumel uploaded a new version of EToys to project The Trunk: http://source.squeak.org/trunk/EToys-mt.416.mcz ==================== Summary ==================== Name: EToys-mt.416 Author: mt Time: 13 January 2021, 4:38:11.621847 pm UUID: 27def810-ffb2-7b47-8af1-c264f29c9bd3 Ancestors: EToys-pre.415 Fixes minor layout issue. =============== Diff against EToys-pre.415 =============== Item was added: + ----- Method: NumericReadoutTile>>minWidth (in category 'misc') ----- + minWidth + ^ 40! Item was removed: - ----- Method: NumericReadoutTile>>minimumWidth (in category 'misc') ----- - minimumWidth - ^ 40! Item was added: + ----- Method: TileMorph>>minWidth (in category 'misc') ----- + minWidth + | aWidth | + aWidth := self basicWidth. + upArrow ifNotNil: [aWidth := aWidth + UpArrowAllowance]. + suffixArrow ifNotNil: [aWidth := aWidth + SuffixArrowAllowance]. + ^ aWidth + ! Item was removed: - ----- Method: TileMorph>>minimumWidth (in category 'misc') ----- - minimumWidth - | aWidth | - aWidth := self basicWidth. - upArrow ifNotNil: [aWidth := aWidth + UpArrowAllowance]. - suffixArrow ifNotNil: [aWidth := aWidth + SuffixArrowAllowance]. - ^ aWidth - !

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The Trunk: HelpSystem-Core-mt.134.mcz
by commits＠source.squeak.org 13 Jan '21

13 Jan '21

Marcel Taeumel uploaded a new version of HelpSystem-Core to project The Trunk: http://source.squeak.org/trunk/HelpSystem-Core-mt.134.mcz ==================== Summary ==================== Name: HelpSystem-Core-mt.134 Author: mt Time: 13 January 2021, 2:32:57.075665 pm UUID: 3680a1e7-e6e0-4144-a673-66b470bd5235 Ancestors: HelpSystem-Core-mt.133 In a help browser's search results, fixes the issue with title-only matches not showing up. Also show the path to the matched topic. =============== Diff against HelpSystem-Core-mt.133 =============== Item was changed: ----- Method: SearchTopic>>find:in:results: (in category 'searching') ----- find: term in: path results: results + | resultTemplate topic contents index | - | resultTemplate c topic | topic := path last. + resultTemplate := Array new: 6. + resultTemplate at: 1 put: path. + + contents := topic title asString. + (index := contents findString: term startingAt: 1 caseSensitive: false) > 0 ifTrue: [ + resultTemplate at: 2 put: (index to: index + term size) ]. + + contents := topic contents asString withSqueakLineEndings. + (index := contents findString: term startingAt: 1 caseSensitive: false) > 0 ifTrue: [ + | leadingContext trailingContext i | + leadingContext := 0. + trailingContext := 0. + i := index. + [i notNil] whileTrue: [ + (leadingContext = 2 or: [i = 1]) + ifTrue: [ + leadingContext := i = 1 ifTrue: [i] ifFalse: [i+1]. + i := nil] + ifFalse: [ + ((contents at: i) = Character cr) ifTrue: [ + leadingContext := leadingContext + 1]. + i := i - 1] ]. + i := index + term size. + [i notNil] whileTrue: [ + (trailingContext = 2 or: [i >= contents size]) + ifTrue: [ + trailingContext := i = contents size ifTrue: [i] ifFalse: [i-1]. + i := nil] + ifFalse: [ + ((contents at: i) = Character cr) ifTrue: [ + trailingContext := trailingContext + 1]. + i := i + 1] ]. - resultTemplate := Array new: 6. - (topic title asString findString: term startingAt: 1 caseSensitive: false) in: [:index | - index > 0 ifTrue: [resultTemplate at: 2 put: (index to: index + term size)]]. + resultTemplate + at: 3 put: (index - leadingContext + 1 to: index - leadingContext + term size); + at: 4 put: (contents copyFrom: leadingContext to: trailingContext); + at: 5 put: leadingContext; + at: 6 put: (index to: index + term size - 1) ]. - ((c := topic contents asString withSqueakLineEndings) findString: term startingAt: 1 caseSensitive: false) in: [:index | - index > 0 ifTrue: [ - | leadingContext trailingContext i | - leadingContext := 0. - trailingContext := 0. - i := index. - [i notNil] whileTrue: [ - (leadingContext = 2 or: [i = 1]) - ifTrue: [ - leadingContext := i = 1 ifTrue: [i] ifFalse: [i+1]. - i := nil] - ifFalse: [ - ((c at: i) = Character cr) ifTrue: [ - leadingContext := leadingContext + 1]. - i := i - 1] ]. - i := index + term size. - [i notNil] whileTrue: [ - (trailingContext = 2 or: [i >= c size]) - ifTrue: [ - trailingContext := i = c size ifTrue: [i] ifFalse: [i-1]. - i := nil] - ifFalse: [ - ((c at: i) = Character cr) ifTrue: [ - trailingContext := trailingContext + 1]. - i := i + 1] ]. - - resultTemplate - at: 1 put: path; - at: 3 put: (index - leadingContext + 1 to: index - leadingContext + term size); - at: 4 put: (c copyFrom: leadingContext to: trailingContext); - at: 5 put: leadingContext; - at: 6 put: (index to: index + term size - 1). - - self mutex critical: [ results add: resultTemplate ]. - self triggerUpdateContents. - - ] ]. + (resultTemplate second notNil "match in title" or: [resultTemplate third notNil "match in contents"]) ifTrue: [ + self mutex critical: [ results add: resultTemplate ]. + self triggerUpdateContents]. + topic isSearchable ifTrue: [ topic subtopics do: [:t | self find: term in: path, {t} results: results]].! Item was changed: ----- Method: SearchTopic>>printResultEntry: (in category 'private') ----- printResultEntry: entry | resultEntry topic | resultEntry := '' asText. topic := entry first last. entry second notNil ifFalse: [resultEntry append: ( (topic title) asText addAttribute: TextEmphasis bold)] ifTrue: [resultEntry append: ( (topic title) asText addAttribute: TextEmphasis bold; addAttribute: (TextColor color: Color green muchDarker) from: entry second first to: entry second last)]. resultEntry append: (' (open topic)' asText addAttribute: (PluggableTextAttribute evalBlock: [ self changed: #searchResultSelected with: entry first. self changed: #searchResultContentsSelected with: entry sixth])). resultEntry append: String cr. + resultEntry append: ( + ('> ', ((entry first allButLast collect: [:t | t title]) joinSeparatedBy: ' > ')) asText + addAttribute: (TextColor color: (Color gray: 0.7))). + + resultEntry append: String cr. + + entry fourth ifNil: [resultEntry append: '\\' withCRs] ifNotNil: [:contents | - entry fourth in: [:contents | | text | text := contents asText. text addAttribute: (TextColor color: Color green muchDarker) from: entry third first to: entry third last; addAttribute: TextEmphasis bold from: entry third first to: entry third last. resultEntry append: text withBlanksTrimmed; append: '\\' withCRs. ]. ^ resultEntry!

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The Trunk: SystemReporter-eem.47.mcz
by commits＠source.squeak.org 13 Jan '21

13 Jan '21

Eliot Miranda uploaded a new version of SystemReporter to project The Trunk: http://source.squeak.org/trunk/SystemReporter-eem.47.mcz ==================== Summary ==================== Name: SystemReporter-eem.47 Author: eem Time: 12 January 2021, 3:42:22.819678 pm UUID: 440e979a-59dd-4593-8ada-75bc330a6583 Ancestors: SystemReporter-eem.46 Add event tracing mask, VM ticker stats, mixed arithmetic flag, and separate marking time. =============== Diff against SystemReporter-eem.46 =============== Item was changed: ----- Method: SystemReporter>>reportVMParameters: (in category 'reporting') ----- reportVMParameters: aStream | vmParameters isStack isCog isSpur | self header: 'Virtual Machine Parameters' on: aStream. vmParameters := Smalltalk vm getVMParameters. isStack := (vmParameters at: 42 ifAbsent: [0]) ~= 0. "42 = number of stack pages available" isCog := isStack and: [(vmParameters at: 46) ~= 0]. "46 is machine code zone size" isSpur := isStack and: [(vmParameters at: 41) anyMask: 2r10000]. "41 is imageFormatVersion for the VM; bit 16 is the Spur bit" (isSpur ifFalse: [#( 1 'size of old space' 2 'size of young+old space' 3 'size of memory' 4 'allocationCount' 5 'allocations between GCs' 6 'survivor count tenuring threshold')] ifTrue: [#( 1 'size of old space' 2 'used bytes in new space (used eden + used past space)' 3 'size of heap')]), #( 7 'full GCs since startup' 8 'total milliseconds in full GCs since startup'), (isSpur ifFalse: [#( 9 'incremental GCs since startup' 10 'total milliseconds in incremental GCs since startup' 11 'tenures of surving objects since startup'), {12 to: 19. 'specific to the translating VM'}] ifTrue: [#( 9 'scavenging GCs since startup' 10 'total milliseconds in scavenging GCs since startup' + 11 'tenures of surving objects since startup' + 12 'event trace mask (for debugging input events)' + 13 'VM ticker start microseconds (Croquet/QwaqVM)' + 14 'VM ticker count (Croquet/QwaqVM)' + 15 'VM ticker call count (Croquet/QwaqVM)' + 16 'total microseconds in idle since startup' - 11 'tenures of surving objects since startup'), - {12 to: 15. 'reserved for future use'}, - #( 16 'total microseconds in idle since startup' 17 'proportion of code zone available for use (Sista VMs only; read-write)' 18 'total milliseconds in full GC compaction since startup (a portion of parameter 8)' 19 'scavenge threshold; the effective size of eden')]), #( 20 'utc microseconds at startup (if non-zero)' 21 'root/remembered table size (occupancy)' 22 'root/remembered table overflows since startup' 23 'bytes of extra memory to reserve for VM buffers, plugins, etc.' 24 'free memory threshold above which object memory will be shrunk' 25 'memory headroom when growing object memory'), (isStack ifFalse: [#( 26 'interruptChecksEveryNms - force an ioProcessEvents every N milliseconds, in case the image is not calling getNextEvent often')] ifTrue: [#( 26 'heartbeat period (ms; see #58)')]), (isSpur ifFalse: [#( 27 'number of times mark loop iterated for current IGC/FGC includes ALL marking' 28 'number of times sweep loop iterated for current IGC/FGC' 29 'number of times make forward loop iterated for current IGC/FGC' 30 'number of times compact move loop iterated for current IGC/FGC')] ifTrue: [#()]), #( 31 'number of grow memory requests' 32 'number of shrink memory requests'), (isSpur ifFalse: [#( 33 'number of root table entries used for current IGC/FGC' 34 'number of allocations done before current IGC/FGC' 35 'number of survivor objects after current IGC/FGC' 36 'millisecond clock when current IGC/FGC completed' 37 'number of marked objects for Roots of the world, not including Root Table entries for current IGC/FGC' 38 'milliseconds taken by current IGC' 39 'Number of finalization signals for Weak Objects pending when current IGC/FGC completed')] ifTrue: [#( 33 'number of root table entries at last scavenge' 35 'number of survivor objects at last scavenge (if non-zero)' 36 'millisecond clock when current scavenge completed' 38 'milliseconds taken by current scavenge' 39 'Number of finalization signals for Weak Objects pending when current SGC/FGC completed')]), #( 40 'VM word size - 4 or 8'), (isStack ifTrue: [#( 41 'imageFormatVersion for the VM' 42 'number of stack pages available' 43 'desired number of stack pages (stored in image file header, max 65535)' 44 'size of eden, in bytes' 45 'desired size of eden, in bytes (stored in image file header)' 46 'machine code zone size, in bytes (0 in Stack VM)' 47 'desired machine code zone size (0 => default 1Mb to 2Mb depending on processor)'), { 48. 'Persistent image header flags\ bit 0: implies Process has threadId as its 4th inst var\ bit 1: if set, methods that are interpreted will have the flag bit set in their header\ bit 2: if set, implies preempting a process does not put it to the back of its run queue\ bit 3: if set, implies the GUI should run on the first thread and event queues should not be accessed from other threads\ bit 4: if set, implies the new finalization scheme where WeakArrays are queued\ bit 5: if set, implies wheel events will be delivered as such and not mapped to arrow key events\ bit 6: if set, implies arithmetic primitives will fail if given arguments of different types (float vs int)\ bit 7: if set, causes times delivered from file primitives to be in UTC rather than local time.' withCRs }, #( 49 'max size the image promises to grow the external semaphore table to'), (isSpur ifFalse: [{ 50 to: 51. 'reserved for VM parameters that persist in the image (such as size of eden above)'. 52 to: 56. 'specific to Spur' }] ifTrue: [{ 50 to: 51. 'reserved for VM parameters that persist in the image (such as size of eden above)' }, #( 52 'root/remembered table capacity' 53 'number of old space segments' 54 'total free old space' 55 'ratio of growth and image size at or above which a GC will be performed post scavenge')]), #( 56 'number of process switches since startup' 57 'number of ioProcessEvents calls since startup' 58 'number of forceInterruptCheck calls since startup' 59 'number of check event calls since startup' 60 'number of stack page overflows since startup' 61 'number of stack page divorces since startup' 62 'compiled code compactions since startup'), (isCog ifFalse: [#()] ifTrue: [#( 63 'total milliseconds in compiled code compactions since startup' 64 'the number of methods that currently have jitted machine-code')]), { 65. 'Cog feature flags\ bit 0: set if the VM supports MULTIPLE_BYTECODE_SETS.\ bit 1: set if the VM supports read-only objects (IMMUTABILITY).\ bit 2: set if the VM has an ITIMER_HEARTBEAT\ bit 3: set if the VM supports cross-platform BIT_IDENTICAL_FLOATING_POINT arithmetic' withCRs. 66. 'the byte size of a stack page'.}, (isSpur ifFalse: [{ 67 to: 69. 'reserved for more Cog-related info' }] ifTrue: [#( 67 'the maximum allowed size of old space (if zero there is no limit)' 68 'the average number of live stack pages when scanned by scavenge/gc/become' 69 'the maximum number of live stack pages when scanned by scavenge/gc/become')]), #( 70 'the vmProxyMajorVersion (the interpreterProxy VM_MAJOR_VERSION)' + 71 'the vmProxyMinorVersion (the interpreterProxy VM_MINOR_VERSION)'), + (isSpur + ifFalse: [#()] + ifTrue: + [#( 72 'milliseconds spent marking since startup' + 73 'reserved for more Spur-related info' + 74 'reserved for more Spur-related info' + 75 'do mixed arithmetic; if false binary arithmetic primitives will fail unless receiver and argument are of the same type')])] - 71 'the vmProxyMinorVersion (the interpreterProxy VM_MINOR_VERSION)')] ifFalse: [#()]) pairsDo: [:idx :desc | | value values | aStream nextPut: $#. idx isInteger ifTrue: [value := vmParameters at: idx. aStream print: idx; tab: (idx < 10 ifTrue: [2] ifFalse: [1]); nextPutAll: ((value isInteger and: [idx ~= 41]) ifTrue: [(desc includesSubstring: 'bit 0:') ifTrue: [value printStringBase: 2 nDigits: value highBit] ifFalse: [value asStringWithCommas]] ifFalse: [value printString])] ifFalse: [value := vmParameters at: idx first. aStream print: idx first; next: 2 put: $.; print: idx last; tab. values := idx collect: [:i| vmParameters at: i]. values asSet size = 1 ifTrue: [aStream print: value] ifFalse: [values do: [:v| aStream print: v] separatedBy: [aStream nextPutAll: ', ']]]. aStream tab; nextPutAll: desc; cr]!

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The Trunk: ToolBuilder-Morphic-mt.271.mcz
by commits＠source.squeak.org 12 Jan '21

12 Jan '21

Marcel Taeumel uploaded a new version of ToolBuilder-Morphic to project The Trunk: http://source.squeak.org/trunk/ToolBuilder-Morphic-mt.271.mcz ==================== Summary ==================== Name: ToolBuilder-Morphic-mt.271 Author: mt Time: 12 January 2021, 2:09:57.073356 pm UUID: b77f7e90-6347-f242-8b9b-921013f06122 Ancestors: ToolBuilder-Morphic-mt.270 Removes the "breathing space" in a list-chooser's preferred extent. Thanks to Chris (cbc) for clarifying the issue with the cellInset in LazyListMorph. Note that I do have a better solution for min/max/preferredExtent in combination with ProportionalLayout and LayoutFrame. Maybe now is the time to invest more time into that. Also note that I will now investigate that 2-pixel-bug that causes the vertical scroll bar to remain after hitting the expand button in a dialog. It is related to the list's and input-field's borderWidth. =============== Diff against ToolBuilder-Morphic-mt.270 =============== Item was changed: ----- Method: ListChooser>>initialExtent (in category 'building') ----- initialExtent | listFont itemCount maxItemSize cellSize | listFont := Preferences standardListFont. itemCount := items size. maxItemSize := items inject: 0 into: [:max :item | max max: item size]. cellSize := (listFont widthOf: $m) @ listFont height. + ^ ((maxItemSize min: 20 max: 10) + @ (itemCount min: 15 max: 5) - ^ ((maxItemSize + 1 "breathing space" min: 20 max: 10) - @ (itemCount + 1 "breathing space" min: 15 max: 5) * cellSize) + (0@ self searchBarHeight)! Item was changed: ----- Method: ListChooser>>preferredExtent (in category 'building') ----- preferredExtent | listFont cellSize | listFont := Preferences standardListFont. cellSize := (listFont widthOf: $m) @ listFont height. ^ ((items inject: 0 into: [:max :item | max max: (listFont widthOfString: item)]) @ (items size * listFont height)) - + ((1@1) * cellSize) "breathing space" + (0@ self searchBarHeight)! Item was changed: ----- Method: ListMultipleChooser>>initialExtent (in category 'toolbuilder') ----- initialExtent | listFont itemCount maxItemSize cellSize | listFont := Preferences standardListFont. itemCount := labels size. maxItemSize := labels inject: 0 into: [:max :item | max max: item size]. cellSize := (listFont widthOf: $m) @ listFont height. + ^ ((maxItemSize min: 20 max: 10) + @ (itemCount min: 15 max: 5) - ^ ((maxItemSize + 1 "breathing space" min: 20 max: 10) - @ (itemCount + 1 "breathing space" min: 15 max: 5) * cellSize)! Item was changed: ----- Method: ListMultipleChooser>>preferredExtent (in category 'toolbuilder') ----- preferredExtent | listFont cellSize | listFont := Preferences standardListFont. cellSize := (listFont widthOf: $m) @ listFont height. ^ ((labels inject: 0 into: [:max :item | max max: (listFont widthOfString: item)]) + @ (labels size * listFont height))! - @ (labels size * listFont height)) - + ((1@1) * cellSize) "breathing space"! Item was changed: ----- Method: PluggableDialogWindow>>expandDialogPane (in category 'running') ----- expandDialogPane + "Expand the dialog pane to its preferred extent, including the pane's extra layout inset used for grips. Then try again to move to the dialog's preferred position." - "Expand the dialog pane to its preferred extent. Honor the visible area in the world." + | extra | + self flag: #preferredExtentWorkaround. "mt: Working with a widget's min, max, and preferred extent is still very awkward using proportional layouts and layout frames. For now, approximate extra spacing to accommodate ListChooser and ListMultipleChooser only." + extra := LazyListMorph new cellInset. extra := extra topLeft + extra bottomRight. - | visibleArea decorationOffset expandedExtent | - visibleArea := self currentWorld visibleClearArea. - decorationOffset := self extent - self paneMorph extent. - expandedExtent := self model preferredExtent + (self paneMorph layoutInset * 2) asPoint. - - self paneMorph extent: (expandedExtent min: visibleArea extent - decorationOffset). + self paneMorph extent: + (self model preferredExtent + + (self paneMorph layoutInset * 2) asPoint + + extra). - self fullBounds. self moveToPreferredPosition.!

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The Trunk: Morphic-mt.1715.mcz
by commits＠source.squeak.org 12 Jan '21

12 Jan '21

Marcel Taeumel uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-mt.1715.mcz ==================== Summary ==================== Name: Morphic-mt.1715 Author: mt Time: 12 January 2021, 2:04:07.252356 pm UUID: 2641645d-9048-f44f-b6ea-2cd85e2c7ff0 Ancestors: Morphic-mt.1714 Fixes the issue where a dialog with flexible contents was not fully visible in small worlds. Thanks to Chris (cbc) for pointing this out! (Note that I think that we need a better way for this combination of #fullBounds, #extent:, and #translatedToBeWithin: to make sure that a morph is visible in the world. May be also useful for other windows. Not sure about this variation with #center: though.) =============== Diff against Morphic-mt.1714 =============== Item was changed: ----- Method: DialogWindow>>moveToHand (in category 'position') ----- moveToHand + self moveToHand: self currentHand.! - self moveToHand: self activeHand.! Item was changed: ----- Method: DialogWindow>>moveToPreferredPosition (in category 'initialization') ----- moveToPreferredPosition + "Moves the dialog window to its preferred position, which can be a point on the screen or a named widget in the dialog's central pane. Ensure that the dialog is fully visible in the world. Also see #positionOverWidgetNamed:." + + | visibleArea decorationOffset | + self fullBounds. "Compute new layout to have updated bounds." + visibleArea := self currentWorld visibleClearArea. + decorationOffset := self extent - self paneMorph extent. + self paneMorph extent: + (self paneMorph extent min: visibleArea extent - decorationOffset). + self fullBounds. "Compute new layout to have updated bounds." self center: (preferredPosition isPoint ifTrue: [ preferredPosition ] ifFalse: [ self center + self currentHand position - preferredPosition center ]). + self bounds: + (self bounds translatedToBeWithin: visibleArea).! - self bounds: (self bounds translatedToBeWithin: self currentWorld visibleClearArea)!

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