Squeak-dev November 1999

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[UPDATES] 2.7alpha news, testers wanted
by Dan Ingalls 27 Nov '99

27 Nov '99

--============_-1268436672==_============ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =46olks - Worlds in Worlds Those of you who follow updates closely will have detected several minor= tremors in the last few hours. The latest update, 1656 (thanks to Andrew= C. Greenberg), fixes the last problem of which I'm aware associated with= the Worlds-in-Worlds changes. AlignmentMorph Changes I have just made some changes to AlignmentMorph that significantly improves= performance of Morphic Viewers and FreeCell, to name two applications. = Since this is a widely-used and widely-subclassed kernel class, I would= like your help in testing the changes, especially if you have some of your= own code that uses AlignmentMorphs. The new alignment code is attached. Please let me know by private mail of= any interesting experiences, positive or negative. Thanks in advance - Dan --============_-1268436672==_============ Content-Type: text/plain; name="AlignmentTweaks.1.cs" ; x-mac-type="54455854" ; x-mac-creator="522A6368" Content-Disposition: attachment; filename="AlignmentTweaks.1.cs" Content-Transfer-Encoding: imap_stub 0,1718,2,3222,89, --============_-1268436672==_============--

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Re: [UPDATES] 2.7alpha news, testers wanted
by Bob Arning 27 Nov '99

27 Nov '99

On Sat, 27 Nov 1999 15:43:42 +0100 (MET) Bert Freudenberg <bert(a)isgnw.CS.Uni-Magdeburg.De> wrote: >I only played with it a little bit, but the world menu of inner worlds >behaves strangely. For example, a "restore display" seems to set the >display bounds to the inner world, so after this part of the outer world >aren't updated anymore. Or, choosing "set desktop color" brings up the >color palette at the upper left corner of the outer world, so if the inner >world window doesn't cover that part of the screen, it's invisible. Or, >choosing "previous project" from the inner world and reentering the >project does restore the inner world as outer world - if you have >something important in the outer world, you should save your image before >trying that. Here are fixes for the first two. The third I'm not sure about. The inner world isn't a "project" world. It could either punt these messages to the outermost world or not offer the choices at all. Cheers, Bob =========== 'From Squeak2.7alpha of 9 November 1999 [latest update: #1656] on 27 November 1999 at 11:09:34 am'! PasteUpMorph subclass: #WiWPasteUpMorph instanceVariableNames: 'parentWorld hostWindow pendingEvent displayDepthOnEntry displayExtentOnEntry ' classVariableNames: 'Debug ' poolDictionaries: '' category: 'Morphic-WiW'! !ColorPickerMorph methodsFor: 'other' stamp: 'RAA 11/27/1999 10:08'! bestPositionNear: box inWorld: world | points b | points _ #(topCenter rightCenter bottomCenter leftCenter). "possible anchors" 1 to: 4 do: [:i | "Try the four obvious anchor points" b _ self bounds align: (self bounds perform: (points at: i)) with: (box perform: (points atWrap: i + 2)). (world bounds containsRect: b) ifTrue: [^ b topLeft" Yes, it fits"]]. ^ world bounds origin + (20@20) "when all else fails" ! ! !DisplayScreen methodsFor: 'private' stamp: 'RAA 11/27/1999 11:09'! setExtent: aPoint depth: bitsPerPixel "DisplayScreen startUp" "This method is critical. If the setExtent fails, there will be no proper display on which to show the error condition..." "ar 5/1/1999: ... and that is exactly why we check for the available display depths first." (depth == bitsPerPixel and: [aPoint = self extent and: [self supportsDisplayDepth: bitsPerPixel]]) ifFalse: [ bits _ nil. "Free up old bitmap in case space is low" (self supportsDisplayDepth: bitsPerPixel) ifTrue:[super setExtent: aPoint depth: bitsPerPixel] ifFalse:["Search for a suitable depth" super setExtent: aPoint depth: self findAnyDisplayDepth]. ]. clippingBox _ super boundingBox! ! !WiWPasteUpMorph methodsFor: 'activation' stamp: 'RAA 11/27/1999 11:02'! becomeTheActiveWorldWith: evt | outerWorld | World == self ifTrue: [^ self]. self damageRecorder reset. "since we may have moved, old data no longer valid" hostWindow setStripeColorsFrom: Color green. self canvas: nil. "safer to start from scratch" displayDepthOnEntry _ Display depth. displayExtentOnEntry _ Display extent. "Messy stuff to clear flaps from outer world" Utilities globalFlapTabs do: [:f | f changed]. outerWorld _ World. World _ self. self installFlaps. World _ outerWorld. outerWorld displayWorld. World _ self. self viewBox: hostWindow panelRect. self startSteppingSubmorphsOf: self. self changed. pendingEvent _ nil. evt ifNotNil: [self primaryHand handleEvent: (evt setHand: self primaryHand)]. ! ! !WiWPasteUpMorph methodsFor: 'activation' stamp: 'RAA 11/27/1999 11:07'! revertToParentWorldWithEvent: evt self damageRecorder reset. "Terminate local display" World _ parentWorld. World assuredCanvas. World installFlaps. hostWindow setStripeColorsFrom: Color red. (displayDepthOnEntry = Display depth and: [displayExtentOnEntry = Display extent]) ifFalse: [ World fullRepaintNeeded ]. evt ifNotNil: [World restartWorldCycleWithEvent: evt]. ! ! !WiWPasteUpMorph methodsFor: 'drawing' stamp: 'RAA 11/27/1999 11:08'! restoreDisplay self == World ifTrue: "Else we're a morphic world-window in an mvc worldState and the restoreDisplay was, unusually, issued from the world's menu rather than from the mvc screen menu" [DisplayScreen startUp. self handsDo: [:h | h endDisplaySuppression]. self restoreFlapsDisplay]. self fullRepaintNeeded! !

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problem with squeak crashing on startup
by Keith McKay 27 Nov '99

27 Nov '99

------=_NextPart_000_0010_01BF38B0.54D1D320 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear All I have started to use squeak to learn some pure object orientated = programming prior to starting university course. Installation went = smoothly on my PC but after a few days squeak started to crash on = start-up. I have tried re-installing but I still get the same problem. = The crash.dmp file is below. Any suggestions? 18725316 Set>findElementOrNil: 18725160 Dictionary>at:ifAbsent: 18726248 [] in SystemDictionary>send:toClassesNamedIn: 18725004 OrderedCollection>do: 18724848 SystemDictionary>send:toClassesNamedIn: 18724692 SystemDictionary>processStartUpList 18682644 SystemDictionary>snapshot:andQuit: 18682488 ScreenController>snapshotAndQuit 18682008 ScreenController>yellowButtonActivity 18681852 ScreenController>redButtonActivity 18681344 MouseMenuController>controlActivity 18681188 Controller>controlLoop 18681032 Controller>startUp 18681500 [] in ControlManager>activeController: 18681656 [] in BlockContext>newProcess Keith McKay E-mail: keithmckay(a)cwcom.net ------=_NextPart_000_0010_01BF38B0.54D1D320 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content=3D"text/html; charset=3Diso-8859-1" = http-equiv=3DContent-Type> <META content=3D"MSHTML 5.00.2314.1000" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>Dear All</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>I have started to use squeak to learn = some pure=20 object orientated programming prior to starting university course.  = Installation went smoothly on my PC but after a few days squeak started = to crash=20 on start-up.  I have tried re-installing but I still get the same=20 problem.  The crash.dmp file is below.  Any = suggestions?</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>18725316 = Set>findElementOrNil:<BR>18725160=20 Dictionary>at:ifAbsent:<BR>18726248 [] in=20 SystemDictionary>send:toClassesNamedIn:<BR>18725004=20 OrderedCollection>do:<BR>18724848=20 SystemDictionary>send:toClassesNamedIn:<BR>18724692=20 SystemDictionary>processStartUpList<BR>18682644=20 SystemDictionary>snapshot:andQuit:<BR>18682488=20 ScreenController>snapshotAndQuit<BR>18682008=20 ScreenController>yellowButtonActivity<BR>18681852=20 ScreenController>redButtonActivity<BR>18681344=20 MouseMenuController>controlActivity<BR>18681188=20 Controller>controlLoop<BR>18681032 Controller>startUp<BR>18681500 = [] in=20 ControlManager>activeController:<BR>18681656 [] in=20 BlockContext>newProcess</FONT></DIV> <DIV> </DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>Keith McKay<BR>E-mail: <A=20 href=3D"mailto:keithmckay@cwcom.net">keithmckay(a)cwcom.net</A></FONT></DIV= ></BODY></HTML> ------=_NextPart_000_0010_01BF38B0.54D1D320--

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[BUG] Worlds in Worlds
by Marcus Denker 27 Nov '99

27 Nov '99

Hi! I found a Bug in the new "Worlds in Worlds": -> open a Morphic project -> world menu, select open, select "inner world". -> bring up the halo of the inner world ("playfield"). -> click on the red halo-button (world menu appears) -> click somewhere inside the inner world (menu disappears) -> bring up the halo again. -> click on the red halo again. -> Error: NonBoolean receiver Marcus -- Marcus Denker marcus(a)ira.uka.de phone@home:(0721)614235 @work:(0721)608-2749

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Re: Some questions about Squeak
by Bob Arning 27 Nov '99

27 Nov '99

On Sat, 27 Nov 1999 09:56:03 +0100 (MET) Stephane Ducasse <ducasse(a)iam.unibe.ch> wrote: >**Long time ago somebody said that I was starting to port the >Refactoring Browser. Is this project still alive? I discussed with >John Brant at OOPSLA and he told me that at the refactoring engine >level he did not see problems. The latest version can be found in http://www.charm.net/~arning/Refactoring%20current/ While the port is not complete, parts of it are quite usable. There is, to my knowledge, no active work on RB at this time. Cheers, Bob

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RE: Some questions about Squeak
by Stephane Ducasse 27 Nov '99

27 Nov '99

Hi Andreas You skip the most interesting of my questions: >For example: it could be really good to have an automatic >initialization protocol like in Clos, to avoid to have to define >everywhere this boring > new > ^ super new initialize > >in CLOS the make-instance method is calling the initialize-instance >for ALL the objects in the system. In Smalltalk, we would just have >to redefine Behavior>>new to call Object>>initialize. >We could let basicNew for emergency purpose. Is there any plans in that direction. ** a stupid question How can I know the color of the background in a morphic world. I'm building a stupid logo turtle (like Pen) and I need to display the turtle and erase it. > > **The mailing list is quite buzy. Is there no plans to have a newgroup? > > I know that some of you think that Squeak is not ready for the mainstream > > people but this would help people that are interested to communicate more > > easily. > > I don't see a difference between having a mailing list and a newsgroup > *except* that having a mailing list avoids a lot of spam (both, to the > newsgroup and to the people posting on it) and that it is a somewhat larger > download. Since I don't mind downloading a bit more stuff and I really hate > spam my personal preference is clearly that of having a mailing list. This is your view for me a newgroup is less linear and I would not be a lot of newgroups if they would be mailing-lists. I prefer mailing for low traffic groups. If you can tell me how I can connect to the European Server I would be REALLY happy. Stef

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[UPDATES] for 2.7 alpha
by Dan Ingalls 27 Nov '99

27 Nov '99

Mostly having to do with worlds within worlds. Enjoy - Dan ------------------------ 1647reburyElvis-sw -- Scott Wallace -- 26 November 1999 After a brief appearance in Squeak, elvis is sent back to the grave." 1648WiWTake3-RAA -- Bob Arning -- 20 November 1999 Fixed the excessive drawing on inner worlds and completed a milestone: Drove the car in a doubly-nested world! Very little is different from the outermost world: - the scripting editor is still reaching for the top of the screen, but you can control-click and grab it to move it down a bit. - putting tiles into a script leaves an artifact copy on the screen that disappears once you move the script a bit. 1649WiWTake4-RAA 1650WiWTake4Tweaks-di -- Dan Ingalls -- 25 November 1999 Done ... [X] World menu now works in MVC (thanks Bob) [X] Flaps are now positioned correctly [X] Converted uses of constainingBounds to viewBox and removed it [X] Fixed bounds of halo name. [X] Collapse point now works for inner windows [X] MVC now provides a menu item for inner morphic worlds [X] Flaps now work in MVC windows [X] Outer flaps continue to show [X] Click on close or collapse box use to need extra click if active - doesn't now. [X] Activate from collapse was flaky -- now consistent Not yet done ... [ ] RealEstateAgent confused about Morphic world in MVC project. Need to pass in world bounds

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Auto Generation of Getters/Setters
by Stewart MacLean 27 Nov '99

27 Nov '99

Hi All, Ignoring the issue as to whether this is a good thing or not (I just want to quickly hack something together) is there an auto generation of getters/setters based on the declared instance variables within Squeak or available as a Goodie? Thanks, Stewart

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A little OT.....about software lifecycle in Smalltalk....
by Piero Campanelli 27 Nov '99

27 Nov '99

Hi. sorry...probably this question is a little off-topic for the list....but I try to send it... Developing with Squeak (and with Smalltalk) are you following this cycle ? 1. A little brainstorming 2. A little design 3. Implement a roughly design ...trying to figure out basic design 4. Refactoring: goto 2 and sometime goto 1 I think that developing with smalltalk is very difficult to figure out the right interaction at the first time...Just to build simple application i change and change design more times.... Thank you...

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[UPDATES] IMPORTANT
by Dan Ingalls 27 Nov '99

27 Nov '99

Folks - Please note that after updates 1648-1650 any Morphic projects in MVC must be converted to a new form. To do this, execute in the 2.7alpha root project (an MVC project) MorphWorldView convertToMVCWiWPasteUpMorph After thing settle down, you may re-collapse the converted windows and all should be fine. NOTE: If you updated in the last hour or so, you should make sure you updated through #1654. Thanks to Dwight Hughes for noticing a problem. - Dan

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