Squeak-dev October 2017

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40 participants
132 discussions

StringHolder subclass: FileList?
by H. Hirzel 05 Oct '17

05 Oct '17

Hello Tim R. asked about the FileList hierarchy [1] (see FileList2>listForPattern(s): and MessageSend abuse thread) On 10/4/17 9:27 PM, tim Rowledge wrote: >> Don’t suppose you recall anything about why it is subclassed from StringHolder? >> That really does seem odd... Bob A: >Well, the whole point is to provide a view of the contents of a file which you can read, edit >and save. The rest is just how to get that content in the first place. So, it's a StringHolder >with some extra buttons attached. Pharo directly subclasses Model [2] I think the current solution of subclassing StringHolder is OK. Interesting to note that if you select an image file in the file list you get the dimensions of the image file plus a thumbnail view of it. Very nice. I agree that a complete rewrite of FileList (and subclasses) is a worthwhile thing to do. Regards Hannes [1] FileList printHierarchy ' ProtoObject #() Object #() Model #(''dependents'') StringHolder #(''contents'') FileList #(''fileName'' ''directory'' ''volList'' ''volListIndex'' ''list'' ''listIndex'' ''pattern'' ''sortMode'' ''brevityState'' ''directoryCache'' ''lastGraphicsExtent'') FileList2 #(''showDirsInFileList'' ''currentDirectorySelected'' ''fileSelectionBlock'' ''dirSelectionBlock'' ''optionalButtonSpecs'' ''modalView'' ''directoryChangeBlock'' ''ok'') FileChooser #(''view'' ''caption'' ''captionMorph'' ''captionBox'' ''cancelButton'' ''okButton'' ''buttonPane'' ''captionPane'' ''directoryPane'' ''filePane'' ''showShortFileNames'') PluggableFileList #(''accepted'' ''fileFilterBlock'' ''canAcceptBlock'' ''validateBlock'' ''newFiles'' ''prompt'' ''resultBlo [2] FileList in Pharo6: ProtoObject #() Object #() Model #(#dependents #announceur) FileList #(#reference #volumeList #volumeListIndex #list #listIndex #pattern #brevityState #dirSelectionBlock #modalView #ok #contents #optionalButtonSpecs #grid #fileEncoding #sortBlock #baseLabel #configuredServices #sourceTextModel)

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About missing services in FileServices initialize
by H. Hirzel 05 Oct '17

05 Oct '17

Hello Edgar In March 2017 there was a topic 'Dropping a morph gives me a funny menu' [7] in which you took part. The solution then was to execute FileServices unregisterFileReader: CornerGripMorph to solve the issue. The discussion lead to the discovery that the initialization of FileServices initialize [8] needs attention. And there is no class comment for FileServices. FileList uses FileServices. So the rewrite of FileList may be taken as an opportunity to fix the few remaining issues with FileServices. Kind regards Hannes ---------------------------------- [4] FileList class registeredFileReaderClasses FileReaderRegistry := nil. "wipe it out" ^FileServices registeredFileReaderClasses [5] FileServices -- http://wiki.squeak.org/squeak/1001 [6] Which file reader classes are not touched by "FileServices initialize"? -- http://wiki.squeak.org/squeak/1023 Note: What [4] FileList class registeredFileReaderClasses says is that in the olden days FileList acted as a file registry. This is now done by FileServices [5] but is does not do it for all cases [6]. [7] Unregister a file service http://forum.world.st/Dropping-a-morph-gives-me-a-funny-menu-tt4939787.html… [8] FileServices http://wiki.squeak.org/squeak/1001

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The Trunk: ToolBuilder-Morphic-mt.197.mcz
by commits＠source.squeak.org 05 Oct '17

05 Oct '17

Marcel Taeumel uploaded a new version of ToolBuilder-Morphic to project The Trunk: http://source.squeak.org/trunk/ToolBuilder-Morphic-mt.197.mcz ==================== Summary ==================== Name: ToolBuilder-Morphic-mt.197 Author: mt Time: 5 October 2017, 8:50:50.594923 am UUID: b60282f3-e8d4-4b4d-86e4-74ab5c91f62b Ancestors: ToolBuilder-Morphic-tpr.196 To avoid confusion with the old "morphic/mvc open" pattern, rename the ToolBuilder-initiated opening for morphs from #morphicOpenWith: to #openAsTool. Drop the argument because that event check for "open window at hand" was really global and the tool builder does not have anything to do with it. Browse #currentEvent if you want to learn more about that. Note that there is no need to hint about "morphic" in that selector because (1) "ToolBuilder-Morphic" is already a Morphic-specific package and (2) all the implementors are actual morphs. =============== Diff against ToolBuilder-Morphic-tpr.196 =============== Item was removed: - ----- Method: DialogWindow>>morphicOpenWith: (in category '*ToolBuilder-Morphic-opening') ----- - morphicOpenWith: aMorphicToolBuilder - - ^ self - moveToHand; - getUserResponse! Item was added: + ----- Method: DialogWindow>>openAsTool (in category '*ToolBuilder-Morphic-opening') ----- + openAsTool + + self flag: #fishy. "mt: Why does the dialog not return its Morphic form but data?" + ^ self + moveToHand; + getUserResponse! Item was removed: - ----- Method: MenuMorph>>morphicOpenWith: (in category '*ToolBuilder-Morphic-opening') ----- - morphicOpenWith: aMorphicToolBuilder - - self popUpInWorld: World. - ^ super morphicOpenWith: aMorphicToolBuilder! Item was added: + ----- Method: MenuMorph>>openAsTool (in category '*ToolBuilder-Morphic-opening') ----- + openAsTool + + self popUpInWorld: World.! Item was removed: - ----- Method: Morph>>morphicOpenWith: (in category '*ToolBuilder-Morphic-opening') ----- - morphicOpenWith: aMorphicToolBuilder - - ^ self openInWorld! Item was added: + ----- Method: Morph>>openAsTool (in category '*ToolBuilder-Morphic-opening') ----- + openAsTool + + self openInWorld.! Item was changed: ----- Method: MorphicToolBuilder>>open: (in category 'opening') ----- open: anObject "Build and open the object. Answer the widget opened." + ^ (self build: anObject) openAsTool! - ^ (self build: anObject) morphicOpenWith: self! Item was removed: - ----- Method: SystemWindow>>morphicOpenWith: (in category '*ToolBuilder-Morphic-opening') ----- - morphicOpenWith: aMorphicToolBuilder - - | morph | - morph := self openInWorldExtent: self extent. - (Project uiManager openToolsAttachedToMouseCursor - and: [ | event | - event := aMorphicToolBuilder currentEvent. - event isMouse and: [event isMouseUp]]) - ifTrue: [ - morph setProperty: #initialDrop toValue: true. - morph hasDropShadow: false. - aMorphicToolBuilder currentHand attachMorph: morph]. - ^ morph - ! Item was added: + ----- Method: SystemWindow>>openAsTool (in category '*ToolBuilder-Morphic-opening') ----- + openAsTool + "Open this window as a tool, that is, honor the preferences such as #reuseWindows and #openToolsAttachedToMouseCursor." + + | meOrSimilarWindow | + meOrSimilarWindow := self openInWorldExtent: self extent. + (Project uiManager openToolsAttachedToMouseCursor + and: [ | event | + event := self currentEvent. + event isMouse and: [event isMouseUp]]) + ifTrue: [ + meOrSimilarWindow setProperty: #initialDrop toValue: true. + meOrSimilarWindow hasDropShadow: false. + self currentHand attachMorph: meOrSimilarWindow]. + ^ meOrSimilarWindow + !

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SqueakSource.com problem - write access and logins currently not working
by David T. Lewis 05 Oct '17

05 Oct '17

We are having a problem with access to squeaksource.com, both from the interactive web interface at http://squeaksource.com, and from MC repositories in your images. Read access is fine, but updates to squeaksource.com will fail with password violation errors. This is a problem in the server image. Cause of the problem is not yet determined, but further information will be found on the box-admins list: http://lists.squeakfoundation.org/pipermail/box-admins/2017-October/date.ht… Write access to squeaksource.com is likely to be disabled for up to 24 hours (just guessing). If necessary, the image will be restored from a known-good backup from 17-Sept-2017, about 2 1/2 weeks ago. If that happens, some recent account changes and new project registrations will be lost, but all actual commits to repositories are stored on disk and will be preserved. Sorry for the inconvenience. Dave

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The Trunk: Compression-dtl.55.mcz
by commits＠source.squeak.org 05 Oct '17

05 Oct '17

David T. Lewis uploaded a new version of Compression to project The Trunk: http://source.squeak.org/trunk/Compression-dtl.55.mcz ==================== Summary ==================== Name: Compression-dtl.55 Author: dtl Time: 28 September 2017, 8:43:03.046216 pm UUID: 3a42cda4-740b-4ac0-9fe3-2033f5a3177b Ancestors: Compression-dtl.54 Instead of "Error: can't find EOCD position", say "Error: ZipArchive cannot find EOCD position in <name of the file or stream>" =============== Diff against Compression-dtl.54 =============== Item was changed: ----- Method: ZipArchive>>readFrom: (in category 'reading') ----- readFrom: aStreamOrFileName | stream name eocdPosition | stream := aStreamOrFileName isStream ifTrue: [name := aStreamOrFileName name. aStreamOrFileName] ifFalse: [StandardFileStream readOnlyFileNamed: (name := aStreamOrFileName)]. stream binary. eocdPosition := self class findEndOfCentralDirectoryFrom: stream. + eocdPosition <= 0 ifTrue: [self error: self class name, ' cannot find EOCD position in ', aStreamOrFileName name]. - eocdPosition <= 0 ifTrue: [self error: 'can''t find EOCD position']. self readEndOfCentralDirectoryFrom: stream. stream position: eocdPosition - centralDirectorySize. self readMembersFrom: stream named: name!

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What is the task of NullEncoder?
by H. Hirzel 05 Oct '17

05 Oct '17

Hello NullEncoder is subclass of object ([1] for full hierachy). It is a superclass of Canvas. What is the function of NullEncoder. No class comment so far? Regards Hannes ------------------------------------------------------------------------------------------------------------------------------- [1] NullEncoder printHierarchy ' ProtoObject #() Object #() NullEncoder #(''target'' ''filterSelector'') FlattenEncoder #() ByteEncoder #() PrintableEncoder #() PostscriptEncoder #() PostscriptEncoderToDisk #() PropertyListEncoder #() Canvas #() ColorMappingCanvas #(''myCanvas'') AlphaBlendingCanvas #(''alpha'') ShadowDrawingCanvas #(''shadowColor'') FormCanvas #(''origin'' ''clipRect'' ''form'' ''port'' ''shadowColor'') BalloonCanvas #(''transform'' ''colorTransform'' ''engine'' ''aaLevel'' ''deferred'') BlueFormCanvas #() ColorPatchCanvas #(''stopMorph'' ''foundMorph'' ''doStop'') MultiResolutionCanvas #(''deferredMorphs'') PluggableCanvas #() BufferedCanvas #(''remote'' ''previousVersion'' ''lastTick'' ''dirtyRect'' ''mirrorOfScreen'') CachingCanvas #(''cacheCanvas'' ''mainCanvas'') ClippingCanvas #(''canvas'' ''clipRect'') MultiCanvas #(''canvases'' ''extent'' ''depth'') NullCanvas #() PostscriptCanvas #(''origin'' ''clipRect'' ''currentColor'' ''shadowColor'' ''currentFont'' ''morphLevel'' ''gstateStack'' ''fontMap'' ''usedFonts'' ''psBounds'' ''topLevelMorph'' ''initialScale'' ''savedMorphExtent'' ''currentTransformation'' ''printSpecs'' ''pages'') DSCPostscriptCanvas #() DSCPostscriptCanvasToDisk #() EPSCanvas #() RemoteCanvas #(''innerClipRect'' ''outerClipRect'' ''transform'' ''connection'' ''shadowColor'')'

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The Trunk: EToys-topa.307.mcz
by commits＠source.squeak.org 04 Oct '17

04 Oct '17

Tobias Pape uploaded a new version of EToys to project The Trunk: http://source.squeak.org/trunk/EToys-topa.307.mcz ==================== Summary ==================== Name: EToys-topa.307 Author: topa Time: 4 October 2017, 2:50:50.655952 pm UUID: c75ac142-2eb0-4153-b7f2-d1acd65e66b4 Ancestors: EToys-tpr.306 Fix and Improve WebCamMorph (try it!) FYI: Windows-DLL is at https://github.com/OpenSmalltalk/opensmalltalk-vm/raw/Cog/platforms/win32/p… Aside: make Tetris appear in objects -> games =============== Diff against EToys-tpr.306 =============== Item was added: + ----- Method: Player>>getShowFPS (in category '*Etoys-Squeakland-MorphicExtras-WebCam') ----- + getShowFPS + ^ self getValueFromCostume: #getShowFPS! Item was added: + ----- Method: Player>>getWebCamOrientation (in category '*Etoys-Squeakland-MorphicExtras-WebCam') ----- + getWebCamOrientation + ^ self getValueFromCostume: #getWebCamOrientation! Item was added: + ----- Method: Player>>setShowFPS: (in category '*Etoys-Squeakland-MorphicExtras-WebCam') ----- + setShowFPS: aBoolean + self setCostumeSlot: #setShowFPS: toValue: aBoolean! Item was added: + ----- Method: Player>>setWebCamOrientation: (in category '*Etoys-Squeakland-MorphicExtras-WebCam') ----- + setWebCamOrientation: aSymbol + costume renderedMorph setWebCamOrientation: aSymbol! Item was changed: ----- Method: Tetris class>>descriptionForPartsBin (in category 'parts bin') ----- descriptionForPartsBin ^ self partName: 'Tetris' translatedNoop + categories: {'Games' translatedNoop} - categories: #() documentation: 'Tetris, yes Tetris' translatedNoop! Item was changed: RectangleMorph subclass: #WebCamMorph + instanceVariableNames: 'camNum camIsOn frameExtent displayForm resolution useFrameSize captureDelayMs showFPS framesSinceLastDisplay lastDisplayTime fps orientation' - instanceVariableNames: 'camNum camIsOn frameExtent displayForm resolution useFrameSize captureDelayMs' classVariableNames: '' poolDictionaries: '' category: 'Etoys-Squeakland-MorphicExtras-WebCam'! !WebCamMorph commentStamp: '<historical>' prior: 0! INTRODUCTION ========= WebCamMorph together with CameraPlugin (originally from MIT Scratch) provides an easy and cross platform way to use webcam input in Squeak and Etoys. The first version has been created specifically with Etoys in mind. To view a live feed simply drag a "WebCam" tile from the "WebCam" category in the objects tool. Open up a viewer on the morph and display the "camera settings" category to explore the following basic settings: "camera is on": turn the camera on/off. "camera number": usually the default of "1" is ok but if you have more than one camera connected then adjust between 1 and 9 for other instances of WebCamMorph. "max fps": leave as is for now. It is unusual for webcams to capture at higher than 30fps. See later for further explanation of how fps is controlled. "actual fps": read-only. Indicates the actual fps being achieved which can depend significantly on lighting conditions and capture resolution... "resolution": webcams can have a range of resolutions but for simplicity three are supported: "low" (160x120), "medium" (320x240) and "high" (640x480). Adjust in good lighting to see if "actual fps" increases. "use frame size": the resolution used for capturing can differ from the resolution used for display. If this setting is true then WebCamMorph is resized to match the camera resolution. If false then you are free to resize it however you want (via the "resize" halo button, use shift to preserve aspect ratio) Beyond viewing a live feed WebCamMorph has been designed to support different uses including simple effects, time-lapse photography, stop-motion animation, character recognition, motion detection and more complex processing of every frame for feature detection. The following information is to help you understand how and why WebCamMorph operates so you can adjust it for your particular needs. "FRAMES PER SECOND", LIGHTING & CAMERA RESOLUTION ================================== The maximum possible frame rate depends on many factors, some of which are outside of our control. Frame rates differ between cameras and usually depend significantly on chosen resolution and lighting conditions. To ensure a balance between capturing every available frame and keeping everything else responsive, WebCamMorph dynamically adjusts the delay between capturing one frame and the next (does not apply when in "manual capture" mode, see later). WebCams often include automatic compensation for lighting conditions. In low lighting it takes significantly more time for the camera to get a picture than it does in good lighting conditions. For example 30fps may be possible with good lighting compared to 7fps in low lighting. So for best capture rates ensure you have good lighting!! Cameras have a "native" resolution at which frame rates are usually better than for other resolutions. Note though that the native resolution might be *higher* than the *minimum* resolution available. It pays to experiment with different resolutions to find which one results in the highest frame rate. Use good lighting conditions when experimenting with resolutions. "MANUAL CAPTURE" MODE =============== In simply usage WebCamMorph automatically captures a frame and displays it. To support Etoys scripting a "manual capture" mode is provided where you or your script determines when to capture, when to apply effects (or not) and when to update the display. In between these steps you can do anything you want. Note that frames rates will be lower than that in automatic capture mode and that "skip frames" (described next) will need adjusting at very low capture rates. Tip: In manual mode the camera can be turned off. It will be turned on automatically when required and return to it's previous state after a frame has been captured. For capture periods of five seconds or more turning the camera off may save power, which can especially useful when running off batteries. For smaller periods leaving the camera on will avoid some delays and could help speed up webcam related scripts. "SKIP FRAMES" ======== Webcams and their drivers are typically designed for streaming live video and use internal buffering to help speed things up. At low capture rates the picture can appear to lag real-time because what you see is the next available buffer not the *latest* buffer. So for example if you capture a frame every ten seconds and there are three buffers being used then what you actually see may be thirty seconds old. We have little/no control over the number of buffers used and the actual number can vary between cameras and under different circumstances for the same camera. "skip frames" is provided to compensate for buffering so increase it when doing "manual" capturing until you see what you expect to see. Typically a setting of 8 is enough but I have had to use 20 with one particular camera in low lighting. "SNAPSHOTS" ======== Where as "capturing" is the process of getting an image from the Camera into Squeak/Etoys, a "snapshot" preserves whatever is currently displayed (which may be the captured image after effects have been applied). To store snapshots you need to designate a "holder" which at the moment can be either a "holder" morph or a "movie" morph. Create one of these before proceeding. To assign a holder open up a viewer for WebCamMorph, display the "snapshot" category and click in the box at the right of the entry called "snapshot holder". The cursor will now resemble a cross-hair and can be clicked on the target holder/movie morph. To take a single snapshot at any time click (!!) on the left of "take snapshot". In auto-capture mode WebCamMorph can also be set to take multiple consecutive snapshots . First, before turning the camera on, set a sensible limit using "snapshot limit" (to avoid using all the computers memory) then set "auto snapshot" to true. When the camera is next turned on then s napshots are taken for every frame until "snapshot limit" becomes zero. "snapshot limit" is automatically decremented but not reset to avoid problems (although you are free to reset it manually or via a script). "EFFECTS" - WIP ========= Similar to snapshots, a holder can be designated as the "effects holder". This holder is intended to be populated with "fx" morphs (coming soon) which will operate on captured frames prior to displaying. Stay tuned ;-) CLEARING SNAPSHOT & EFFECTS HOLDERS ========================= Keeping a link to snapshot or effects holders can tie up resources even after the target holders have been deleted and are no longer visible. To ensure this does not happen designate the WebCamMorph itself as the holder (for method see "snapshots" section above). COMING SOON!! ========= - Built-in basic effects such as brightness, contrast and hue. - Image "fx" morphs for effects such as those found in MIT Scratch and many other types of effects/ image processing. - More snapshot options, eg, store to file - Demo projects ! Item was changed: ----- Method: WebCamMorph class>>additionsToViewerCategories (in category 'scripting') ----- additionsToViewerCategories "Answer a list of (<categoryName> <list of category specs>) pairs that characterize the phrases this kind of morph wishes to add to various Viewer categories." ^ #( (#'camera' ( + (slot resolution '160x120, 320x240, 640x480 or 1280x960' - (slot resolution '160x120, 320x240 or 640x480' WebCamResolution readWrite Player getWebCamResolution Player setWebCamResolution:) + (slot orientation 'Natural (mirrored) or navtive (as from the camera' + WebCamOrientation readWrite Player getWebCamOrientation Player setWebCamOrientation:) (slot cameraIsOn 'Whether the camera is on/off' Boolean readWrite Player getWebCamIsOn Player setWebCamIsOn:) (slot useFrameSize 'Resize the player to match the camera''s frame size' Boolean readWrite Player getUseFrameSize Player setUseFrameSize:) (slot lastFrame 'A player with the last frame' Player readOnly Player getLastFrame unused unused) + (slot showFPS 'Whether to show the samera''s frames per second' Boolean readWrite Player getShowFPS Player setShowFPS:) )) ) ! Item was changed: ----- Method: WebCamMorph class>>resolutionFor: (in category 'scripting') ----- resolutionFor: aSymbol + (#(low medium high hd) includes: aSymbol) ifFalse: [^ 320@240]. - (#(#low #medium #high) includes: aSymbol) ifFalse: [^ 320@240]. + ^ {160 @ 120. 320 @ 240. 640 @ 480. 1280 @ 960} - ^ {160@120. 320@240. 640@480} at: (WebCamResolution resolutions indexOf: aSymbol) ! Item was changed: ----- Method: WebCamMorph>>addCustomMenuItems:hand: (in category 'menu') ----- addCustomMenuItems: aMenu hand: aHandMorph + - | item | super addCustomMenuItems: aMenu hand: aHandMorph. - item := (camIsOn == true) - ifTrue: ['turn camera off' translated] - ifFalse: ['turn camera on' translated]. aMenu + addUpdating: #cameraToggleString action: #toggleCameraOnOff; + addLine; + add: 'resolution...' translated subMenu: ([:menu | + WebCamResolution resolutions do: [:res | + menu + add: (resolution == res ifTrue: ['<on>'] ifFalse: ['<off>']), res translated + selector: #setWebCamResolution: + argument: res]. + menu] value: (aMenu class new defaultTarget: aMenu defaultTarget)); + add: 'orientation...' translated subMenu: ([:menu | + WebCamOrientation orientations do: [:ori | + menu + add: (orientation == ori ifTrue: ['<on>'] ifFalse: ['<off>']), ori translated + selector: #setWebCamOrientation: + argument: ori]. + menu] value: (aMenu class new defaultTarget: aMenu defaultTarget)); + addUpdating: #frameSizeToggleString action: #toggleUseFrameSize; + addUpdating: #showFPSToggleString action: #toggleShowFPS; + yourself + ! - add: item translated - target: self - action: #toggleCameraOnOff. - - - - - ! Item was added: + ----- Method: WebCamMorph>>cameraToggleString (in category 'menu') ----- + cameraToggleString + + ^ camIsOn + ifTrue: ['<on>', 'turn camera off' translated] + ifFalse: ['<off>', 'turn camera on' translated]. + + + + ! Item was added: + ----- Method: WebCamMorph>>decreaseCaptureDelay (in category 'accessing') ----- + decreaseCaptureDelay + + captureDelayMs := (captureDelayMs - 1) min: 200.! Item was changed: ----- Method: WebCamMorph>>delete (in category 'submorphs-add/remove') ----- delete + self class instanceCount > 1 + ifFalse: [self off] + ifTrue: [ + self stopStepping. + camIsOn := false]. - (self class instanceCount > 1) - ifFalse:[self off] - ifTrue:[self stopStepping. camIsOn := false]. super delete.! Item was added: + ----- Method: WebCamMorph>>drawCameraImageOn: (in category 'drawing') ----- + drawCameraImageOn: aCanvas + | scale offset | + offset := 0 @ 0. + scale := 1 @ 1. + bounds extent = displayForm extent + ifFalse: [scale := bounds extent / displayForm extent]. + orientation == #natural + ifTrue: [ + scale := scale x negated @ scale y. + offset := bounds width @ 0]. + 1 @ 1 = scale + ifTrue: [aCanvas drawImage: displayForm at: bounds origin + offset] + ifFalse: [aCanvas + warpImage: displayForm + transform: (MatrixTransform2x3 withScale: scale) + at: bounds origin + offset]. + ! Item was added: + ----- Method: WebCamMorph>>drawFPSOn: (in category 'drawing') ----- + drawFPSOn: aCanvas + showFPS ifFalse: [^self]. + aCanvas + drawString: 'FPS: ', fps asString + at: bounds bottomLeft + (5 @ -20) + font: Preferences windowTitleFont + color: Color white! Item was changed: ----- Method: WebCamMorph>>drawOn: (in category 'drawing') ----- drawOn: aCanvas + useFrameSize ifTrue: [self extent: frameExtent]. + self drawCameraImageOn: aCanvas. + self drawFPSOn: aCanvas. + self drawOverlayTextOn: aCanvas. - aCanvas - drawImage: ( - (self extent = displayForm extent) - ifTrue: [displayForm] - ifFalse: [displayForm scaledToSize: self extent] - ) at: bounds origin. ! Item was added: + ----- Method: WebCamMorph>>drawOverlayTextOn: (in category 'drawing') ----- + drawOverlayTextOn: aCanvas + camIsOn ifTrue: [^self]. + aCanvas + drawString: 'Camera is off' translated + at: bounds origin + (5 @ 2) + font: Preferences windowTitleFont + color: Color white.! Item was added: + ----- Method: WebCamMorph>>frameSizeToggleString (in category 'menu') ----- + frameSizeToggleString + + ^ (useFrameSize ifTrue: ['<on>'] ifFalse: ['<off>']), 'use frame size' translated + + + ! Item was added: + ----- Method: WebCamMorph>>getShowFPS (in category 'e-toy - settings') ----- + getShowFPS + ^ showFPS + ! Item was added: + ----- Method: WebCamMorph>>increaseCaptureDelay (in category 'accessing') ----- + increaseCaptureDelay + + captureDelayMs := (captureDelayMs + 1) max: 10.! Item was changed: ----- Method: WebCamMorph>>initialize (in category 'initialization') ----- initialize super initialize. camNum := 1. camIsOn := false. + showFPS := false. + captureDelayMs := 16. "stepTime" + fps := 60. "guess." + lastDisplayTime := 0. + framesSinceLastDisplay := 0. - captureDelayMs := 0. "stepTime" useFrameSize := false. + resolution := #medium. + orientation := #natural. - resolution := #'medium'. frameExtent := self class resolutionFor: resolution. + self initializeDisplayForm. - displayForm := Form extent: frameExtent depth:32. self extent: frameExtent. self on. ! Item was added: + ----- Method: WebCamMorph>>initializeDisplayForm (in category 'initialization') ----- + initializeDisplayForm + | cameraExtent formExtent | + + cameraExtent := CameraInterface frameExtent: camNum. + cameraExtent isZero + ifTrue: [formExtent := frameExtent] + ifFalse: [ | camRatio frameRatio | + formExtent := cameraExtent. + camRatio := cameraExtent x / cameraExtent y. + frameRatio := frameExtent x / frameExtent y. + camRatio ~= frameRatio ifTrue: [frameExtent := frameExtent x @ (frameExtent x * camRatio reciprocal)]]. + displayForm := Form extent: formExtent depth: 32. + self extent: frameExtent. + ! Item was added: + ----- Method: WebCamMorph>>knownName (in category 'testing') ----- + knownName + + ^ CameraInterface cameraName: camNum ! Item was changed: ----- Method: WebCamMorph>>nextFrame (in category 'stepping and presenter') ----- nextFrame + | frameCount | + frameCount := CameraInterface getFrameForCamera: camNum into: displayForm bits. + frameCount = 0 ifTrue: [self increaseCaptureDelay]. + frameCount > 2 ifTrue: [self decreaseCaptureDelay]. + framesSinceLastDisplay := framesSinceLastDisplay + frameCount! - CameraInterface getFrameForCamera: camNum into: displayForm bits. - ! Item was changed: ----- Method: WebCamMorph>>on (in category 'accessing') ----- on (CameraInterface cameraIsOpen: camNum) ifTrue: [ ^camIsOn := true.]. + (CameraInterface openCamera: camNum width: frameExtent x height: frameExtent y) - (CameraInterface - openCamera: camNum - width: frameExtent x - height: frameExtent y) ifNil: [^false]. + CameraInterface waitForCameraStart: camNum. + self initializeDisplayForm. + self extent: frameExtent. - (Delay forSeconds: 2) wait. - displayForm := Form extent: frameExtent depth:32. camIsOn := true. self startStepping. ! Item was added: + ----- Method: WebCamMorph>>setShowFPS: (in category 'e-toy - settings') ----- + setShowFPS: aBoolean + showFPS := aBoolean + ! Item was added: + ----- Method: WebCamMorph>>setWebCamOrientation: (in category 'e-toy - settings') ----- + setWebCamOrientation: aSymbol + + ((WebCamOrientation orientations) includes: aSymbol) ifFalse: [^ self]. + orientation := aSymbol. + + + ! Item was added: + ----- Method: WebCamMorph>>showFPSToggleString (in category 'menu') ----- + showFPSToggleString + + ^ (showFPS ifTrue: ['<on>'] ifFalse: ['<off>']), 'show fps' translated + + + ! Item was added: + ----- Method: WebCamMorph>>toggleShowFPS (in category 'menu') ----- + toggleShowFPS + + showFPS := showFPS not. + ! Item was added: + ----- Method: WebCamMorph>>toggleUseFrameSize (in category 'menu') ----- + toggleUseFrameSize + + useFrameSize := useFrameSize not. + ! Item was changed: ----- Method: WebCamMorph>>updateDisplay (in category 'stepping and presenter') ----- updateDisplay + camIsOn ifTrue:[self nextFrame]. + self updateFPS. + self changed.! - camIsOn - ifFalse: [displayForm getCanvas - drawString: 'Camera is off' translated - at: 5 @ 2 - font: Preferences windowTitleFont - color: Color white. - ] - ifTrue:[self nextFrame]. - self changed.! Item was added: + ----- Method: WebCamMorph>>updateFPS (in category 'stepping and presenter') ----- + updateFPS + + | now mSecs | + now := Time millisecondClockValue. + mSecs := now - lastDisplayTime. + (mSecs > 500 or: [mSecs < 0 "clock wrap-around"]) + ifTrue: [ + fps := (framesSinceLastDisplay * 1000) // mSecs. + lastDisplayTime := now. + framesSinceLastDisplay := 0].! Item was added: + SymbolListType subclass: #WebCamOrientation + instanceVariableNames: '' + classVariableNames: '' + poolDictionaries: '' + category: 'Etoys-Squeakland-MorphicExtras-WebCam'! Item was added: + ----- Method: WebCamOrientation class>>initialize (in category 'as yet unclassified') ----- + initialize + Vocabulary initialize.! Item was added: + ----- Method: WebCamOrientation class>>orientations (in category 'as yet unclassified') ----- + orientations + ^ #( native natural )! Item was added: + ----- Method: WebCamOrientation>>initialize (in category 'as yet unclassified') ----- + initialize + super initialize. + self vocabularyName: #WebCamOrientation. + + self symbols: self class orientations.! Item was added: + ----- Method: WebCamOrientation>>representsAType (in category 'as yet unclassified') ----- + representsAType + ^true! Item was changed: ----- Method: WebCamResolution class>>initialize (in category 'as yet unclassified') ----- initialize + Vocabulary initialize.! - Vocabulary initialize! Item was changed: ----- Method: WebCamResolution class>>resolutions (in category 'as yet unclassified') ----- resolutions + ^ #(#'low' #'medium' #'high' #'hd') - ^ #(#'low' #'medium' #'high') !

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The Trunk: Graphics-topa.382.mcz
by commits＠source.squeak.org 04 Oct '17

04 Oct '17

Tobias Pape uploaded a new version of Graphics to project The Trunk: http://source.squeak.org/trunk/Graphics-topa.382.mcz ==================== Summary ==================== Name: Graphics-topa.382 Author: topa Time: 4 October 2017, 2:43:10.503003 pm UUID: 1f8b86d2-e987-40e3-84cd-8c689d87f60f Ancestors: Graphics-mt.381 fix Point>>magnifyBy: to accept points It already pretended to. =============== Diff against Graphics-mt.381 =============== Item was changed: ----- Method: Form>>magnifyBy: (in category 'scaling, rotation') ----- magnifyBy: scale "Answer a Form created as a scaling of the receiver. Scale may be a Float or even a Point, and may be greater or less than 1.0." + | effectiveScale | + effectiveScale := scale isPoint ifTrue: [scale r] ifFalse: [scale]. - ^ self magnify: self boundingBox by: scale + smoothing: (effectiveScale < 1 ifTrue: [2] ifFalse: [1])! - smoothing: (scale < 1 ifTrue: [2] ifFalse: [1])!

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The Trunk: MorphicExtras-hjh.210.mcz
by commits＠source.squeak.org 03 Oct '17

03 Oct '17

David T. Lewis uploaded a new version of MorphicExtras to project The Trunk: http://source.squeak.org/trunk/MorphicExtras-hjh.210.mcz ==================== Summary ==================== Name: MorphicExtras-hjh.210 Author: hjh Time: 30 September 2017, 11:55:17.310454 am UUID: 3a05acb5-0d83-424c-8471-b7b5af288d35 Ancestors: MorphicExtras-tpr.209 A smoke test for Postscript support. =============== Diff against MorphicExtras-tpr.209 =============== Item was added: + TestCase subclass: #EPSCanvasTest + instanceVariableNames: '' + classVariableNames: '' + poolDictionaries: '' + category: 'MorphicExtras-Postscript Canvases'! Item was added: + ----- Method: EPSCanvasTest>>testSmokeTest (in category 'as yet unclassified') ----- + testSmokeTest + | epsCode | + epsCode := (RectangleMorph new asEPS). + + self assert: epsCode lines first = '%!!PS-Adobe-2.0 EPSF-2.0'. + + self assert: (epsCode lines detect: [:line | line beginsWith: '%start morph: a RectangleMorph'] ifNone: [nil]) notNil. + + self assert: epsCode lines last = '%%EOF' + !

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UIManager>chooseFileMatching: etc
by tim Rowledge 03 Oct '17

03 Oct '17

Whilst tinkering around I stumbled across UIManager>chooseFileMatching: etc and was surprised to find that it gets implemented with a filelist derived ui that matches only on file suffixes instead of the patterns that the API specifically calls out. I can’t find much in the way of usage of the root call in the image nor with some googling, so I doubt it will cause any problem if I fix the problem; any objections? I can just substitute proper pattern matching as is already available in the filelist anyway. As an aside, the current visuals suggest to me that the suffix-matching version was originally an EToy thing - is that true? IT’s certainly radically different visually than the other filelist derived file/directory picking UIs. Also, there’s actually a class called FileChooser, which seems to be likewise unused and unloved. Should we unlove it enough to delete it? Or improve it to do proper theme stuff etc? What I want to achieve is an improved UI for the image save as… so it is easier to save your image to a different directory. I want a simple dialog that looks like a plain fillintheblank except for a ‘more’ button that would add a directory chooser view. Of course, that will then require some change to the finding of the .sources, at least wrt the allinone package since the sources are kept with the image, ie deep in the package/Contents/Resources directory. Saving the default new image to a user location instead of the allinone would currently require copying the sources as well as the changes, not really the right thing. Once upon a time the normal place for the sources was gather with the vm but perhaps the requirements of the apple bundle stopped that? tim -- tim Rowledge; tim(a)rowledge.org; http://www.rowledge.org/tim Strange OpCodes: RLBM: Ruin Logic Board Multiple

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