Squeak-dev March 2004

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179 participants
629 discussions

[BUG][FIX] PostscriptCharacterScanner DNU #setAlignment:
by Richard Staehli 04 Jun '04

04 Jun '04

This bug has been around a while, but I just discovered the workaround someone posted on the swiki. The problem can be reproduced simply: - in 3.6 image, open a new StackMorph - add a TextMorph to the first page - set text alignment to centered - from the Stack's red "menu" halo button, select "copy & print" -> "print Postscript to file" and accept defaults. - a walkback appears: "PostscriptCharacterScanner doesNotUnderstand: #setAlignment:?" This problem can be fixed by the suggestion posted on the swiki's "Postscript support" page. The fix is to modify the class 'PostscriptCharacterScanner' to be a subclass of 'CharacterScanner' and remove from the former the instance variable 'font'. I do not know if this fix causes other problems. Here is the change to PostscriptCharacterScanner: CharacterScanner subclass: #PostscriptCharacterScanner instanceVariableNames: 'canvas paragraph bounds curPos foregroundColor emphasis ' classVariableNames: '' poolDictionaries: '' category: 'Morphic-Postscript Canvases'

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[BUG][FIX]MouseMoveEvtStartPos-ar
by Eddie Cottongim 04 Jun '04

04 Jun '04

>From Preamble: "Change Set: MouseMoveEvtStartPos-ar Date: 18 August 2003 Author: Eddie Cottongim Fixes a bug where MouseMoveEvents would not report their startPosition correctly. Change by Andreas Raab." To observe this bug, execute "HandMorph showEvents: true" and observe the starting point for mouse moves. Its usually wrong - most of the time, start point = end point. It makes much more sense after the patch. The change makes sense to me. startPosition is now set to the hand's current position. Since the hand hasn't yet been moved in response to the event being formed, it makes sense that the hand's current position will the the starting point for the next mouse move event. Someone should see if this helps/hurts Genie - Genie uses the start position for mouse moves. I'm suprised it would work at all given the old, broken behavior. Thanks, Eddie

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RSS library?
by Brent Vukmer 04 Jun '04

04 Jun '04

Anybody got a RSS library available in Squeak, that they're willing to share?

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[BUGFIX] Point>>reciprocal
by Trygve Reenskaug 03 Jun '04

03 Jun '04

I have a simple Morph structure: SlideRM(BorderedMorph) TransformMorphRM(TransformMorph) SlideInnerRM(PasteUpMorph) The Transform scale was aPoint. I got error when computing the inverse transform because Point does not understand reciprocal, see attached bug report. A simple fix could be a new method to Point: reciprocal " Answer a Point with coordinates that are the reciprocals of mine. " " Method was missing from release. " " 20040301 20:50:35 TRee(Squeak3.6-5429-tree07.38) " ^ x reciprocal @ y reciprocal. --Trygve -- Trygve Reenskaug mailto: trygver(a)ifi.uio.no Morgedalsvn. 5A http://heim.ifi.uio.no/~trygver N-0378 Oslo Tel: (+47) 22 49 57 27 Norway

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[BUG] ExceptionTester>>simpleOuterTest fails
by Marcus Denker 29 May '04

29 May '04

ExceptionTester>>simpleOuterTest fails (3.6beta 5395) Reproduce with (ExceptionTester is part of the BaseImage Test Package): ExceptionTester new runTest: #simpleOuterTest) suiteLog Here's the test: simpleOuterTest "uses #resume" [[self doSomething. MyTestNotification signal. self doSomethingElse] on: MyTestNotification do: [:ex | ex outer]] on: MyTestNotification do: [:ex | self doYetAnotherThing. ex resume] -- Marcus Denker marcus(a)ira.uka.de -- Squeak! http://squeak.de

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[ENH] new String modifier: String>>asPlural
by Norton, Chris 24 May '04

24 May '04

Hi Folks. Here's the preamble from my changeset: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "OK. You could say that this is a silly crusade, but I like my Squeak messages to be in proper English (at least when the language you're using is English). I was messing around with the HangMan file-in and I got a walkback that had the following title: 'Error: HangManPhrases classs are not indexable'. I just couldn't stand the extra 's' on 'class', so I created a nifty new String method called asPlural and I modified the sender of the odd string to use the new String modifier. Take it or leave it, but I think this makes auto-generated text just a little easier to read." ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I hope you find this new String modifier useful too. Cheers! ---==> Chris <<PluralStrings-ccn.cs>>

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mac vm 3.7.0b2
by John M McIntosh 15 May '04

15 May '04

I've pushed a Mac VM 3.7.0b2 for testing to http://homepage.mac.com/johnmci/ Squeak 3.7.0Beta2.app.sit It contains: a) You can alter the application's Info.plist by setting the SqueakEncodingType using the ICANA readable names macintosh - >macRoman UTF-8 -> UTF-8 b) Support for sqSocketListenOnPortBacklogSizeInterface, which allows you to specify the interface to use for the listen should work both for os-x and os-9. c) Usage of VMMaker3-7a2. d) Special change sets: make primitive point x/y internal, and slightly faster activate. -- ======================================================================== === John M. McIntosh <johnmci(a)smalltalkconsulting.com> 1-800-477-2659 Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ======================================================================== ===

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SqueakMap - analysis tools?
by Bill Schwab 14 May '04

14 May '04

Hello all, SqueakMap seems to be taking off nicely, and it is a nice way to grab goodies. However, I still come back to the problem of starting from scratch. Dolphin's commercial origins force the issue with each release, but it's also a nice sanity check on whether or not I know what is in my image. Are there any good tools for deciding what to load into a new image? I encourage and Dolphin-using Squeakers to take a look at Migrate from my Dolphin Goodies - especially the version packaged for D5. I would really like to see something like it for Squeak. The other issue, mentioned before, is that SM seems to favor downloading over locally cached copies. Ideally, it should offer to download updates, but be willing to load packages from the local drive. Has that been addressed? Bill Wilhelm K. Schwab, Ph.D. University of Florida Department of Anesthesiology PO Box 100254 Gainesville, FL 32610-0254 Email: bills(a)anest4.anest.ufl.edu Tel: (352) 846-1285 FAX: (352) 392-7029

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HELP! with plugins
by Eric Scharff 11 May '04

11 May '04

(Apologies for nagging folks again, but I never received answers to any of my plugin questions. While creating plugins may not be nearly as exciting as discussing licensing issues, it is far more important to my current project. :) ) Here is a re-post of my latest plugin question: I have a trivial plugin: TestInterpreterPlugin subclass: #MyPlugin instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Eric-Test' With a "primitive" method I intend to compile to C: innerLoopX: x y: y limit: escape | | self primitive: 'primGuy' parameters: #(SmallInteger SmallInteger SmallInteger) receiver: #Oop. ^ (escape + x + y) asOop: SmallInteger (Note, simplified to do nothing useful, but illustrates the problem) If I execute: MyPlugin doPrimitive: 'innerLoopX:y:limit:' withArguments #(1 1 1) I would expect to get 3. Instead, I get a walkback: Error: attempt to index non-existent element in an ordered collection OrderedCollection(Object)>>error: OrderedCollection>>errorNoSuchElement OrderedCollection>>at: InterpreterProxy>>stackValue: InterpreterProxy>>stackIntegerValue: MyPlugin>>DoItIn: Compiler>>evaluate:in:to:notifying:ifFail: [] in TestTMethod>>simulatePrologInContext: Array(SequenceableCollection)>>keysAndValuesDo: TestTMethod>>simulatePrologInContext: MyPlugin(Object)>>primitive:parameters:receiver: MyPlugin>>innerLoopX:y:limit: MyPlugin class(TestInterpreterPlugin class)>>doPrimitive:withArguments: What am I doing wrong? -Eric

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Enhanced & Extended Serial Port support.
by John M McIntosh 11 May '04

11 May '04

I've push a changeset and macintosh plugins onto the server, they should appear in a few days. The SerialExtendedMacOS9Plugin.sit goes in the mac 3.5 noncarbon plugin location The SerialExtendedUnixPlugin.bundle goes in the mac 3.5 carbon plugin location {yes the name implies unix, but os-x is unix...} The EnhancedSerialPorts-JMM changeset which is the classes and plugin interface logic you need to file in. I suspect usage will be limited but it enables you to do things with serial ports (and file handles, hint any file handle) that you can't do otherwise. I would think to compile this code on your favorite Linux box that would be a snap. Only one platform specific primitive or method exists serialPortFindNamesPlusKeysstorage which on os-x invokes the IOServiceGetMatchingServices() call to get path names to devices that support the serial protocols. This primitive call a common Linux box could be replaced by smalltalk code to iterate over /dev or read some sort of control file etc to figure out the path names to the serial devices. For mac os-9 this functionality was already part of the VM. I'm hoping that no platform specific C code will be required for unix boxes. Alas windows users require someone to do the dirty work if you want windows specific serial calls? Or will unix emulation somewhere/how etc work? Couldn't speak for parallel ports, never even occurred to me to investigate till now. I should point out that Dan Ingalls <Dan(a)SqueakLand.org> was kind enough to actually fund with real USA $ some of the work required to build this plugin, then willing to release it to the public. So enjoy, and thank Dan for motivating ($) me to write the code and for releasing it. PS I won't pass up an opportunity to point out if you've an obscure macintosh specific feature you would like and like Dan have a bit of cash to pay for it, then we should talk. -- ======================================================================== === John M. McIntosh <johnmci(a)smalltalkconsulting.com> 1-800-477-2659 Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ======================================================================== ===

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