Squeak-dev November 2019

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23 participants
232 discussions

[BUG(s)] in Context control (#jump, #runUntilErrorOrReturnFrom:)
by Thiede, Christoph 17 May '21

17 May '21

Hi all, I would like to report a bug I found related to debugging the debugger. I actually found the issue when debugging the context simulation of "Over", but let's start with a simple example. Scenario 1 Steps to reproduce: * (Save your image, if it contained any valuable information.) * Type the following into a Workspace: x := 5. thisContext insertSender: (Context contextEnsure: [x := 4]). * Debug it and step: * (into) #contextEnsure * (through) #ensure: * (into) #jump * step over the implementation, and press (into) while returning. Expected behavior: The same should happen as if you would not debug, but normally do the code: It should run without raising any error, and x should finally contain the value 4. Actual behavior: * In Trunk: * An infinite chain of debuggers appears, making it impossible to reuse the image. If you gain the chance to see any debugger, or to receive a non-empty debug log, you can see there is #errorSubscriptBounds: called from within a context. However, it is not possible to find out the complete stack of this error. (At least, I did not manage after a few attempts.) * In Squeak 5.1 (Note: You will need to replace here with MethodContext, for compatibility): * The same error is raised, but instead of endless debuggers, you get endless emergency evaluators: [cid:2c2ee09f-1f81-4969-a2af-0fac1c093119] Workaround: Modify the #contextEnsure: implementation in the following way: [cid:02411c12-9a78-40fe-a3b3-c7f8357c133d] Reason: As the comment in Context>>#jump states, the receiver context "MUST BE a top context (ie. a suspended context or a abandoned [sic] context that was jumped out of)", which, in particular, "already has its return value on its stack".1 However, in the #contextEnsure: example, ctxt is not a top context because is it still running, and on its top, it does not have a return value but the closure vector2 {ctxt. chain}. This leads to the fact that #jump pops away this closure vector so that any attempt to access this vector will result in Context>>#at: to call #errorSubscriptBounds:. I'm not sure where this attempt is made actually, but I suppose each debugger's ContextVariableInspector could do this and so raise another debugger and so forth ... Considerations: A simple solution would be the workaround presented above. However, we would not only need to patch #contextOn:do: the same way, we also wondered why the same problem does not also has had any visible impacts on the other senders of #jump in past, which are #restart and #runUntilErrorOrReturnFrom:. The first refreshes the context and then jumps into it, and from theory, I think it should be possible to call it from a foreign sender in a similar minimal example in order to invalidate the context register. However, I did not manage to construct an appropriate example yet. The same goes for #runUntilErrorOrReturnFrom:, because when "here jump" is executed, "here" again is neither a sender of the block context, nor it has is return value on stack. In a nutshell, to us, it has been keeping an open question so far whether the other senders of #jump are legitime. Should we maybe add a method like "Context >> jumpWith: aReturnValue" which would push aReturnValue on the receiver first and then perform the jump? Or could this have any negative impacts if there is indeed already a return value on stack of the receiver? Scenario 2 Steps to reproduce: The same as Scenario 1, but instead of stepping into #jump, just step over it. Expected behavior: The same expected behavior as in Scenario 1. Actual behavior: (diff to Actual behavior of Scenario 1 highlighted for ease of reading) * In Trunk: * An infinite chain of debuggers appears, making it impossible to reuse the image. If you gain the chance to see any debugger, or to receive a non-empty debug log, you can see there is #cannotReturn:to: called from within a new process. * In Squeak 5.1 (Note: You will need to replace here with MethodContext, for compatibility): * The same error is raised, but instead of endless debuggers, you get endless emergency evaluators: [cid:f7412be3-907b-441a-8a7e-889cbc88f1cd] Note: This issue continues to exist after applying the workaround patch from Scenario 1. Reason: No idea. After applying the workaround from above, I tried to debug #doStep before stepping over the #jump per button, but this lead me to some kind of infinite loop: When I debug the whole debugging logic via Process>>#completeStep: and Process>>#complete: down to Context>>#runUntilErrorOrReturnFrom: and there step *into* the "self jump" statement, the error does not occur. When I step *over* this line instead, the same error occurs. I also tried to debug that #doStep in the second debugger window again, but this bug seems to be a real Heisenbug - it only occurs when you do *not* step into the relevant #jump call. Considerations: As mentioned above, we also could not yet explain whether all calls to #jump in #runUntilErrorOrReturnFrom: are valid with regard to the "return value on stack" precondition. Maybe there is a connection? We will keep investigating the issue, but any help is appreciated, of course! 1 I'm afraid the example method "Interpreter>>primitiveSuspend" further mentioned in the comment does no longer exist. 2 Is "closure vector" an official term? If not, what would be the official term? :) Best, Christoph

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The Inbox: Morphic-ct.1586.mcz
by commits＠source.squeak.org 01 May '21

01 May '21

A new version of Morphic was added to project The Inbox: http://source.squeak.org/inbox/Morphic-ct.1586.mcz ==================== Summary ==================== Name: Morphic-ct.1586 Author: ct Time: 10 November 2019, 4:06:17.228559 pm UUID: d752eb23-2116-0945-b043-aff08fed94fd Ancestors: Morphic-mt.1584 Proposal: Style printIt results as a pluggable link that can be clicked to inspect the result. To enable this behavior, this commit also extends #insertAndSelect:at: to allow for inserting both strings and texts. =============== Diff against Morphic-mt.1584 =============== Item was changed: ----- Method: PluggableTextMorph>>printIt (in category 'menu commands') ----- printIt | oldEditor | textMorph editor selectFrom: selectionInterval first to: selectionInterval last; model: model. "For, eg, evaluateSelection" textMorph handleEdit: [(oldEditor := textMorph editor) evaluateSelectionAndDo: [:result | selectionInterval := oldEditor selectionInterval. textMorph installEditorToReplace: oldEditor. + textMorph handleEdit: [ oldEditor afterSelectionInsertAndSelect: + (oldEditor printTextFor: result)]. - textMorph handleEdit: [oldEditor afterSelectionInsertAndSelect: result printString]. selectionInterval := oldEditor selectionInterval. textMorph editor selectFrom: selectionInterval first to: selectionInterval last. self scrollSelectionIntoView]]! Item was changed: ----- Method: TextEditor>>afterSelectionInsertAndSelect: (in category 'new selection') ----- + afterSelectionInsertAndSelect: aStringOrText - afterSelectionInsertAndSelect: aString + self insertAndSelect: aStringOrText at: self stopIndex ! - self insertAndSelect: aString at: self stopIndex ! Item was changed: ----- Method: TextEditor>>insertAndSelect:at: (in category 'new selection') ----- + insertAndSelect: aStringOrText at: anInteger - insertAndSelect: aString at: anInteger + aStringOrText isString ifTrue: [ + ^ self + insertAndSelect: (Text string: aStringOrText attributes: emphasisHere) + at: anInteger]. - self closeTypeIn. + self closeTypeIn. self selectInvisiblyFrom: anInteger to: anInteger - 1. self openTypeIn. self replace: self selectionInterval + with: (Text string: ' ' attributes: emphasisHere), aStringOrText - with: (Text string: (' ', aString) attributes: emphasisHere) and: []. - self closeTypeIn.! Item was changed: ----- Method: TextEditor>>printIt (in category 'do-its') ----- printIt self evaluateSelectionAndDo: [:result | (model respondsTo: #printIt:result:) ifTrue: [model perform: #printIt:result: with: self selection with: result] + ifFalse: [self afterSelectionInsertAndSelect: (self printTextFor: result)]]! - ifFalse: [self afterSelectionInsertAndSelect: result printString]]! Item was added: + ----- Method: TextEditor>>printTextFor: (in category 'do-its') ----- + printTextFor: anObject + + ^ Text + string: anObject printString + attributes: {PluggableTextAttribute evalBlock: [anObject inspect]}!

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Proposal: Geometry Classes
by patrick.rein＠hpi.uni-potsdam.de 11 Mar '21

11 Mar '21

Hi everyone, during some recent clean-up an issue with geometry objects came up. As a result the following idea came up which I thereby would like to put out for an initial discussion. In case we find that this might be useful, I would continue by implementing a first prototype of the package as a foundation of a more in-depth discussion later on. Bests Patrick # Squeak Change Proposal - Geometry Package ## Why? Squeak implements basic geometry logic in too many different places. For example intersection of different kinds of geometric objects is implemented all over Morphic, ST80, Balloon, Graphics, and Etoys. Such extensive scattering across packages and classes impedes modularity, that is, readability and extensibility. An example for this recently came up when we discovered an issue with testing for graphical intersections between PolygonMorph and RectangleMorph. It was not possible to compute that overlapping area because the class Rectangle omits to provide an important method. A quick fix would entail unnecessary dependencies (here: Morphic -> Balloon) or duplicated code (see also http://bugs.squeak.org/view.php?id=7872). Consequently, we might want to modularize the geometry objects and operations. As a side effect, dependent packages such as Morphic can be simplified a little bit (more). ## Scope The proposed package should cover basic 2D geometric objects and their operations represented by the following classes: - Point - Line - LineSegment - Polygon - Rectangle (as an optimization as it could be represented as a special Polygon already) Most classes could simply be moved from their previous packages. Afterwards the interfaces would need to be made consistent with each other to allow interoperability of all geometry classes within the new package. ### Affected classes: - All classes in ST80-Paths - LineSegement, Bezier2Segment, Bezier3Segment (Balloon-Geometry) - Rectangle, Quadrangle, Point (Graphics-Primitives) - LineIntersections, LineIntersectionSegment, LineIntersectionEvent (Etoys-Squeakland-Graphics-Tools-Intersection) ## Open questions - Should this become a single new package or a subcategory in the Graphics package? - Should the package contain an Ellipses class? - Should we model curved line segments as BezierLineSegments, CurvedLineSegment, or Arc? ## Risks - This would potentially deprecate the existing ST80 geometry classes (ST80-Paths) - Some of the new classes will cause name clashes with existing classes. For example Line is currently in ST-80 and represents a line segment, and the class LineSegment is a line segment but not in the geometric sense as it also incorporates arcs. Both names might then be used by new classes with different meanings. This might be mitigated by introducing a pre-/postfix for the names of the new classes.

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find original change set
by Javier Orsaria 09 Mar '21

09 Mar '21

Hi, I was trying to use, in VersionsBrowser, the feature "find original change set" for a method. In old versions (3.8 and earlier) this work fine. But in 3.10 and 3.9 don´t. I followed the sequence and detect the problem at MethodChangeRecord-noteNewMethod: noteNewMethod: newMethod "NEVER do this. It is evil." currentMethod _ nil. should be: noteNewMethod: newMethod "NEVER do this. It is evil." currentMethod _ newMethod. This way work as I expect. But with that comment I understand was intentioned. What is the problem with this? I can´t see it... I'm the devil? Thanks, Javier

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[Test][Squeak5.2rc1][SqueakMap] FFI entry in SqueakMap catalog for 5.2?
by H. Hirzel 12 Jan '21

12 Jan '21

Hello All tests Loading FFI into Sque The load script for FFI is 'community supported' in SqueakMap. The relevant FFI entry has as load script is just Installer new merge: #ffiTests This still applies for 5.2. However the last time FFI shows up in the SqueakMap client list for a particular release is version 4.5. Not in 4.6, 5.0 and 5.1 What do I need to do to make it appear in the list for 5.2. Creating a release for 5.2 would be an option but that seems unnecessary as it had not been done for 4.5 either. Suggestions how to proceed? Regards Hannes

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The Inbox: Morphic-ct.1588.mcz
by commits＠source.squeak.org 16 Nov '20

16 Nov '20

A new version of Morphic was added to project The Inbox: http://source.squeak.org/inbox/Morphic-ct.1588.mcz ==================== Summary ==================== Name: Morphic-ct.1588 Author: ct Time: 15 November 2019, 2:18:46.719005 pm UUID: cd229fb4-796e-a349-9c09-811159cf9e6e Ancestors: Morphic-mt.1587 TextEditor: Add support for different keyboard layouts, fix the 9-enclosing bug and clean up #enclose: You now can do [Editor defaultKeyboardLayout: #qwertz] to adapt the editing behavior of Squeak to the qwertz layout. Squeakers from all the world, feel free to add further keyboard layouts to #specialShiftKeyMaps! We also had an interesting dicussion concerning the 9-enclosing bug (see http://forum.world.st/When-did-it-become-a-good-idea-for-selected-text-to-b…) and wondered whether there would be really anyone willing to press 9 only, without any modifier key, to enclose the selection with brackets. He or she might press 9 and shift together in future (on a qwertz layout), it would be just incon{sist,veni}ent that 8 and 9 had such different behaviors. Depends on Collections-ct.860. =============== Diff against Morphic-mt.1587 =============== Item was changed: Object subclass: #Editor instanceVariableNames: 'morph selectionShowing' + classVariableNames: 'BlinkingCursor DefaultKeyboardLayout DestructiveBackWord DumbbellCursor EnclosingCharacterMap KeystrokeActions SelectionsMayShrink SpecialShiftKeyMaps' - classVariableNames: 'BlinkingCursor DestructiveBackWord DumbbellCursor KeystrokeActions SelectionsMayShrink' poolDictionaries: '' category: 'Morphic-Text Support'! !Editor commentStamp: 'hjh 9/28/2017 11:37' prior: 0! New text editors. TextEditor provides most of the functionality that used to be in TextMorphEditor. SmalltalkEditor is has Smalltalk code specific features. ! Item was added: + ----- Method: Editor class>>defaultKeyboardLayout (in category 'keyboard shortcut tables') ----- + defaultKeyboardLayout + + ^ DefaultKeyboardLayout ifNil: [#qwerty]! Item was added: + ----- Method: Editor class>>defaultKeyboardLayout: (in category 'keyboard shortcut tables') ----- + defaultKeyboardLayout: aSymbol + + DefaultKeyboardLayout := aSymbol! Item was added: + ----- Method: Editor class>>enclosingCharacterMap (in category 'keyboard shortcut tables') ----- + enclosingCharacterMap + + ^ EnclosingCharacterMap ifNil: [EnclosingCharacterMap := + Dictionary fromKeys: '([<{|"''' values: ')]>}|"''']! Item was changed: ----- Method: Editor class>>initialize (in category 'class initialization') ----- initialize " Editor initialize " self initializeKeystrokeActions. + EnclosingCharacterMap := nil. + SpecialShiftKeyMaps := nil. self allSubclassesDo: [ :c | c initialize ]! Item was added: + ----- Method: Editor class>>specialShiftKeyMaps (in category 'keyboard shortcut tables') ----- + specialShiftKeyMaps + + SpecialShiftKeyMaps ifNotNil: [^ SpecialShiftKeyMaps]. + SpecialShiftKeyMaps := Dictionary new + at: #qwerty put: (Dictionary fromKeys: '[]\'',.90' values: '{}|"<>()'); + at: #qwertz put: (Dictionary fromKeys: '89' values: '()'); + yourself. + ^ SpecialShiftKeyMaps! Item was added: + ----- Method: Editor>>enclosingCharacterFor:ifNone: (in category 'as yet unclassified') ----- + enclosingCharacterFor: openingCharacter ifNone: aBlock + + ^ self enclosingCharacterMap + at: openingCharacter + ifAbsent: aBlock! Item was added: + ----- Method: Editor>>enclosingCharacterMap (in category 'as yet unclassified') ----- + enclosingCharacterMap + + ^ self class enclosingCharacterMap! Item was added: + ----- Method: Editor>>keyboardLayout (in category 'accessing') ----- + keyboardLayout + + ^ self class defaultKeyboardLayout! Item was added: + ----- Method: Editor>>mapSpecialKeyToShift: (in category 'private') ----- + mapSpecialKeyToShift: aCharacter + "Maps special characters such as $[ on a qwerty keyboard to their uppercase equivalent, that would be ${ in this example. Probably required by some VM implementations." + + ^ self specialShiftKeys + at: aCharacter + ifAbsent: [aCharacter]! Item was added: + ----- Method: Editor>>specialShiftKeys (in category 'accessing') ----- + specialShiftKeys + + ^ self class specialShiftKeyMaps at: self keyboardLayout! Item was changed: ----- Method: TextEditor>>enclose: (in category 'editing keys') ----- enclose: aKeyboardEvent "Insert or remove bracket characters around the current selection." + | character left right startIndex stopIndex oldSelection text | - | character left right startIndex stopIndex oldSelection which t | - character := aKeyboardEvent shiftPressed - ifTrue: ['{}|"<>' at: ('[]\'',.' indexOf: aKeyboardEvent keyCharacter) ifAbsent: [aKeyboardEvent keyCharacter]] - ifFalse: [aKeyboardEvent keyCharacter]. self closeTypeIn. + + character := aKeyboardEvent keyCharacter. + (aKeyboardEvent shiftPressed + or: ["Allow Control key in lieu of Alt+Shift for certain special keys." + Preferences cmdKeysInText and: [aKeyboardEvent controlKeyPressed]]) + ifTrue: [character := self mapSpecialKeyToShift: aKeyboardEvent keyCharacter]. startIndex := self startIndex. stopIndex := self stopIndex. oldSelection := self selection. + left := character. + right := self enclosingCharacterFor: left ifNone: [^ false]. + + text := self text. + ((startIndex > 1 and: [stopIndex <= text size]) + and: [ (text at: startIndex - 1) = left and: [(text at: stopIndex) = right]]) - which := '([<{|"''9' indexOf: character ifAbsent: [ ^ false ]. - "Allow Control key in lieu of Alt+Shift for (, {, and double-quote." - left := ((Preferences cmdKeysInText and: [ aKeyboardEvent controlKeyPressed ]) - ifTrue: [ '({<{|""(' ] - ifFalse: ['([<{|"''(']) at: which. - right := ((Preferences cmdKeysInText and: [ aKeyboardEvent controlKeyPressed ]) - ifTrue: [ ')}>}|"")' ] - ifFalse: [')]>}|"'')']) at: which. - t := self text. - ((startIndex > 1 and: [stopIndex <= t size]) - and: [ (t at: startIndex-1) = left and: [(t at: stopIndex) = right]]) ifTrue: ["already enclosed; strip off brackets" + self selectFrom: startIndex - 1 to: stopIndex. - self selectFrom: startIndex-1 to: stopIndex. self replaceSelectionWith: oldSelection] ifFalse: ["not enclosed; enclose by matching brackets" + self replaceSelectionWith: (Text + string: (String with: left), oldSelection string, (String with: right) + attributes: emphasisHere). + self selectFrom: startIndex + 1 to: stopIndex]. + ^ true! - self replaceSelectionWith: - (Text string: (String with: left), oldSelection string, (String with: right) attributes: emphasisHere). - self selectFrom: startIndex+1 to: stopIndex]. - ^true!

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TranslucentColor for World: Rendering issue
by Thiede, Christoph 19 Sep '20

19 Sep '20

Hi, should it be a valid state for the World (not an arbitrary PasteUpMorph, but one that #isWorldMorph) to have a transparent TranslucentColor? The current implementation does not forbid this. I know this would not make much sense, but I discovered a quite interesting rendering problem: World color: (Color darkGray alpha: 0.2). MagnifierMorph new openInWorld. bg := BackgroundMorph new addMorph: Morph new; position: 200 @ 100; extent: 128 @ 128; "works" openInWorld. Hover the BackgroundMorph, and the magnifier will work as expected. Now do: bg extent: 128 @ 127. "fails" On my machine (SqueakCog, build 15341b5, on Win1903), the magnifier now does not always display the BackgroundMorph but most of the time its background. I can also perceive some flickering, only few frames are rendered correctly. I also tested other ratios, it seems as if the error occurs iff the BackgroundMorph's bounds area (number of pixels) is lower than 2e14. By debugging the number of unique colors in #magnifiedForm|form, I found out that the defect must occur somewhere in Display>>#copy:. Unfortunately, I could not reproduce it by stepping through the code. As said before, I see that a transparent World color is probably useless, but as I do not understand all relevant code entirely, I thought there could be a more general defect somewhere, beyond this situation. tldr: 1. The given code piece produces a failure. Should we forbid transparent World colors? 2. Where does this weird 2e14 limit come from? 3. By the way: For testing, I turned the conditional in #magnifiedForm off, in order to always call PasteUpMorph>>#patchAt:without:andNothingAbove:. The comment indicates that Display>>#copy: would be faster, but I could not measure any difference in performance. Is this conditional still needed? The #patchAt:without:andNothingAbove: variant also seems not to be affected by the described rendering issue. I would be very happy about your reactions :-) Best, Christoph

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The Inbox: Morphic-ct.1540.mcz
by commits＠source.squeak.org 19 Sep '20

19 Sep '20

A new version of Morphic was added to project The Inbox: http://source.squeak.org/inbox/Morphic-ct.1540.mcz ==================== Summary ==================== Name: Morphic-ct.1540 Author: ct Time: 23 September 2019, 4:44:32.818523 pm UUID: 064f7940-90ea-1646-a6f5-6c0a82c06e91 Ancestors: Morphic-mt.1539 Proposal: Remember & explore provenance of any morph. Sure, this is a performance regression (that's why it's turned off by default), but when you are debugging, I could tell you of so many cases in which this can be a useful utility. Looking at #browseCreatorMethod, we can also use this to allow beginners for quickly browsing the <example> method that created a morph. =============== Diff against Morphic-mt.1539 =============== Item was changed: Object subclass: #Morph instanceVariableNames: 'bounds owner submorphs fullBounds color extension' + classVariableNames: 'HaloForAll IndicateKeyboardFocus MetaMenuForAll PreferredCornerRadius RememberProvenance UseSoftDropShadow' - classVariableNames: 'HaloForAll IndicateKeyboardFocus MetaMenuForAll PreferredCornerRadius UseSoftDropShadow' poolDictionaries: '' category: 'Morphic-Kernel'! !Morph commentStamp: 'klc 3/14/2017 11:30' prior: 0! A Morph (from the Greek "shape" or "form") is an interactive graphical object. General information on the Morphic system can be found at http://wiki.squeak.org/squeak/30. Morphs exist in a tree, rooted at a World (generally a PasteUpMorph). The morphs owned by a morph are its submorphs. Morphs are drawn recursively; if a Morph has no owner it never gets drawn. To hide a Morph and its submorphs, set its #visible property to false using the #visible: method. The World (screen) coordinate system is used for most coordinates, but can be changed if there is a TransformMorph somewhere in the owner chain. My instance variables have accessor methods (e.g., #bounds, #bounds:). Most users should use the accessor methods instead of using the instance variables directly. Structure: instance var Type Description bounds Rectangle A Rectangle indicating my position and a size that will enclose me. owner Morph My parent Morph, or nil for the top-level Morph, which is a or nil world, typically a PasteUpMorph. submorphs Array My child Morphs. fullBounds Rectangle A Rectangle minimally enclosing me and my submorphs. color Color My primary color. Subclasses can use this in different ways. extension MorphExtension Allows extra properties to be stored without adding a or nil storage burden to all morphs. By default, Morphs do not position their submorphs. Morphs may position their submorphs directly or use a LayoutPolicy to automatically control their submorph positioning. Although Morph has some support for BorderStyle, most users should use BorderedMorph if they want borders.! Item was added: + ----- Method: Morph class>>rememberProvenance (in category 'preferences') ----- + rememberProvenance + + <preference: 'Remember provenance of each morph' + categoryList: #(Morphic) + description: 'If enabled, each morph will contain a debug item to view its creator stack. This allows you to explore its provenance later. May affect performance.' + type: #Boolean> + ^ RememberProvenance ifNil: [false]! Item was added: + ----- Method: Morph class>>rememberProvenance: (in category 'preferences') ----- + rememberProvenance: aBoolean + + RememberProvenance := aBoolean.! Item was added: + ----- Method: Morph>>browseCreatorMethod (in category 'debug and other') ----- + browseCreatorMethod + + ^ (self valueOfProperty: #officialCreator) browse! Item was changed: ----- Method: Morph>>buildDebugMenu: (in category 'debug and other') ----- buildDebugMenu: aHand "Answer a debugging menu for the receiver. The hand argument is seemingly historical and plays no role presently" | aMenu aPlayer | aMenu := MenuMorph new defaultTarget: self. aMenu addStayUpItem. (self hasProperty: #errorOnDraw) ifTrue: [aMenu add: 'start drawing again' translated action: #resumeAfterDrawError. aMenu addLine]. (self hasProperty: #errorOnStep) ifTrue: [aMenu add: 'start stepping again' translated action: #resumeAfterStepError. aMenu addLine]. aMenu add: 'inspect morph' translated action: #inspectInMorphic:. aMenu add: 'inspect owner chain' translated action: #inspectOwnerChain. Smalltalk isMorphic ifFalse: [aMenu add: 'inspect morph (in MVC)' translated action: #inspect]. self isMorphicModel ifTrue: [aMenu add: 'inspect model' translated target: self model action: #inspect; add: 'explore model' translated target: self model action: #explore]. (aPlayer := self player) ifNotNil: [aMenu add: 'inspect player' translated target: aPlayer action: #inspect]. aMenu add: 'explore morph' translated target: self selector: #exploreInMorphic:. aMenu addLine. aPlayer ifNotNil: [ aMenu add: 'viewer for Player' translated target: self player action: #beViewed. aMenu balloonTextForLastItem: 'Opens a viewer on my Player -- this is the same thing you get if you click on the cyan "View" halo handle' translated ]. aMenu add: 'viewer for Morph' translated target: self action: #viewMorphDirectly. aMenu balloonTextForLastItem: 'Opens a Viewer on this Morph, rather than on its Player' translated. aMenu addLine. aPlayer ifNotNil: [aPlayer class isUniClass ifTrue: [ aMenu add: 'browse player class' translated target: aPlayer selector: #haveFullProtocolBrowsedShowingSelector: argumentList: #(nil)]]. aMenu add: 'browse morph class' translated target: self selector: #browseHierarchy. + self isMorphicModel - (self isMorphicModel) ifTrue: [aMenu add: 'browse model class' target: self model selector: #browseHierarchy]. + (self valueOfProperty: #officialCreator ifAbsent: [nil]) ifNotNil: [ + aMenu add: 'browse creator method' action: #browseCreatorMethod]. + (self hasProperty: #creatorStack) ifTrue: [ + aMenu add: 'explore creator stack' action: #exploreCreatorStack]. aMenu addLine. self addViewingItemsTo: aMenu. aMenu add: 'make own subclass' translated action: #subclassMorph; add: 'save morph in file' translated action: #saveOnFile; addLine; add: 'call #tempCommand' translated action: #tempCommand; add: 'define #tempCommand' translated action: #defineTempCommand; addLine; add: 'control-menu...' translated target: self selector: #invokeMetaMenu:; add: 'edit balloon help' translated action: #editBalloonHelpText. ^ aMenu! Item was added: + ----- Method: Morph>>exploreCreatorStack (in category 'debug and other') ----- + exploreCreatorStack + + ^ (self valueOfProperty: #creatorStack) explore! Item was changed: ----- Method: Morph>>initialize (in category 'initialization') ----- initialize "initialize the state of the receiver" owner := nil. submorphs := Array empty. bounds := self defaultBounds. + color := self defaultColor. + self class rememberProvenance ifTrue: [ + | creatorStack | + creatorStack := thisContext home stack collect: #method. + self setProperty: #creatorStack toValue: creatorStack. + creatorStack + detect: [:method | method hasPragma: #example] + ifFound: [:method | self setProperty: #officialCreator toValue: method]].! - color := self defaultColor!

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The Inbox: Sound-ct.70.mcz
by commits＠source.squeak.org 19 Sep '20

19 Sep '20

A new version of Sound was added to project The Inbox: http://source.squeak.org/inbox/Sound-ct.70.mcz ==================== Summary ==================== Name: Sound-ct.70 Author: ct Time: 1 October 2019, 11:24:29.223339 pm UUID: 2f133210-3aa3-7140-96bf-52dc03b1dea6 Ancestors: Sound-eem.66 Add example "Yesterday" for SampledSound This commit is part of reconstruction of Objectland (also known as "The Worlds of Squeak"). For more information, see: http://forum.world.st/The-Inbox-MorphicExtras-ct-267-mcz-td5104764.html =============== Diff against Sound-eem.66 =============== Item was added: + ----- Method: SampledSound class>>exampleYesterday (in category 'examples') ----- + exampleYesterday + "SampledSound exampleYesterday play" + + ^ SampledSound + samples: (SoundBuffer fromByteArray: (Base64MimeConverter mimeDecodeToBytes: + self yesterdaySamples readStream) contents) + samplingRate: 22050! Item was added: + ----- Method: SampledSound class>>yesterdaySamples (in category 'examples') ----- (excessive size, no diff calculated)

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The Inbox: Graphics-ct.419.mcz
by commits＠source.squeak.org 17 Sep '20

17 Sep '20

A new version of Graphics was added to project The Inbox: http://source.squeak.org/inbox/Graphics-ct.419.mcz ==================== Summary ==================== Name: Graphics-ct.419 Author: ct Time: 20 September 2019, 7:45:53.388726 pm UUID: 5deebfce-0321-9645-aebd-0b4bfb428259 Ancestors: Graphics-nice.417 Add Rectangle>>#pointAtFraction: Example: [(5@5 rect: 10@20) pointAtFraction: 0.5@1] will give you 7.5 @ 20. dep:feat-ol =============== Diff against Graphics-nice.417 =============== Item was added: + ----- Method: Rectangle>>pointAtFraction: (in category 'rectangle functions') ----- + pointAtFraction: relativePoint + + ^ self origin + (self extent * relativePoint)!

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