Squeak-dev November 2010

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77 participants
254 discussions

Sophie MPEG Player
by Chris Cunnington 28 Dec '10

28 Dec '10

OK, I've pulled the MPEG player from Sophie. It looks worlds better. http://smalltalktelevision.com/player2.jpg It's also at http://www.squeaksource.com/MultiMedia.html It opens with: MPEGMoviePlayerMorph new openInWorld Chris

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Open Cobalt on Squeak 4.1 is available
by Matthew Fulmer 12 Dec '10

12 Dec '10

Hi. Open Cobalt now runs mostly as it should on Squeak 4.1. It is not a finished port, but it is definitely enough to start playing with, testing out OpenGL, packaging it up for installation into current images, or whatever. Up to date instructions are kept at http://cobalt.cs.duke.edu/pub/INSTALLING.txt Reply with any questions. Current copy of installation instructions reproduced below. ----------------------------------------------------------------- Welcome to the beta version of Cobalt ported to Squeak 4.1 To run me, you will need: - the latest cobalt-trunk.*.zip file from http://cobalt.cs.duke.edu/pub/ - the latest opencobalt-1.0alpha*.zip from http://www.cs.duke.edu/~jdougan/downloads/1.0alpha1/ - A recent VM from http://squeakvm.org - http://ftp.squeak.org/sources_files/SqueakV39.sources.gz 1. Unzip the opencobalt-1.0alpha*.zip folder somewhere 2. Unzip the cobalt-trunk.*.zip file inside the opencobalt-1.0alpha* folder. It contains 3 files: cobalt-trunk.*.image cobalt-trunk.*.changes config/cobalt-browser.conf 3. unzip SqueakV39.sources.gz and put SqueakV39.sources into the opencobalt-1.0alpha* folder 4. run cobalt-trunk.*.image using your VM 5. Do this: CProjectMorph open: CobaltModularPanel 6. Click the menu item Cobalt > Start Cobalt == About this image == This image is a trunk image from November 2009, updated to the latest code in the trunk repository, except where that conflicts with Cobalt. Feel free to make a better image based on the current, 4.1 images. Known issues are listed at http://cobalt.cs.duke.edu/pub/cobalt41todo.txt -- Matthew Fulmer (a.k.a. Tapple)

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Book - A Mentoring Course on Smalltalk
by recursive68＠gmail.com 09 Dec '10

09 Dec '10

Thinking of buy this book, anybody read it ? Is it a basic st book or more advanced and is it any good ? TIA Jon

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Re: [squeak-dev] refactoring browser in Squeak?
by Tim Felgentreff 04 Dec '10

04 Dec '10

Hello There are currently two packages in the inbox (Kernel-topa.508, Compiler-tfel.175) which enable AST, Refactoring-*, VB-Regex and the useful OB packages (Standard, Core, Morphic, Regex, Refactory, Shout) to load in trunk. Attached you will find a ChangeSet that, if applied after loading all of the packages, fixes all but 12 failures and 1 error in the aforementioned packages' tests. Regards Tim On Oct 25, 2010, at 5:58 PM, Lawson English wrote: > On 10/25/10 8:38 AM, Tim Felgentreff wrote: >> We're currently compiling a set of changes that will allow OB and Refactory to work again in their latest respective versions. I'll test them and put them up on the ML/Inbox later today. >> >> I talked with Lukas today about a possible OB-SqueakCompat package, what would the community think about that? >> >> Regards >> Tim >> > I don't know if you saw my recent comment about the browser behavior. In Squeak 4.1 the version of OmniBrowser loaded by this script: > > Installer squeaksource >> project: 'MetacelloRepository'; >> install: 'ConfigurationOfOmniBrowser'. >> (Smalltalk at: #ConfigurationOfOmniBrowser) project lastVersion load: #( Dev ). > > > works differently when PRDistribution or subclasses of PRDistribtion are highlighted. > > Like as not, its part of other issues you are already working on, but just in case it's not... > > > Lawson > > >

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Debugger bug: disappearing contents
by Frank Shearar 02 Dec '10

02 Dec '10

Hi, I've been chasing down a strange bug these past few days: http://bugs.squeak.org/view.php?id=7569 The executive summary is this: when viewing a method in the debugger that refers to an instvar deleted after the Debugger instantiated, the CodePane shows the correct source for a fraction of a second, and then goes blank. What I'd expected to see was the source of the method rendered as per usual, and the reference to the missing instvar coloured red, to indicate a problem. (Just like what you'd see if you opened up a Browser on the method.) The CodePane goes blank because the Debugger's contents instvar is nilled out. CodeHolder>>setContentsToForceRefresh nils the instvar because CodeHolder>>didCodeChangeElsewhere returns true. That method returns true because the Debugger's currentCompiledMethod instvar and the compiled method according to "aClass compiledMethodAt: aSelector" aren't the same object. And now I'm a bit stuck. I know the behaviour I'd expect, I know why the bug's happening, but how do I fix it? Does CodeHolder (or Debugger) need a better way of knowing whether the viewed method's changed? (For instance, comparing the two CompiledMethods' asCommaString shows identical contents.) frank

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quick handling of graphics files
by Ross Boylan 01 Dec '10

01 Dec '10

I have PNG files with document scans, and would like to view them as part of an application. I will also need to scale and/or pan them. One file took over a minute to open when I selected "open graphic in window" from the file browser. (ImageReadWriter formFromFileNamed: 'myfile.png') asMorph openInHand had about the same speed. I'm looking for advice on how to speed that up, or the information that is not possible. I found a similar question on the newbie list, but no one answered it. I'm guessing that it is the initial read and translation of the file that's taking the time, since resizing the image is much faster than loading it. This is really too slow to be practical, and much slower than imagemagick's display command, which opens in under 5 seconds. The image is a 400dpi black and white scan of an 8.5x11" page; the file is 144k bytes. BTW is there any particular reason the file browser opens a SketchMorph while asMorph on the ImageReadWrite result produces an ImageMorph? The former is closer to what I want since it is resizeable and not transluscent; on the other hand, the comment in SketchMorph says they are produced by the PaintBox, which is not true in this case. Squeak 3.10.2 on Linux with 32 bit color in X. I think squeak is using 32 bit color as well, but couldn't find the setting on a quick look (not in preferences browser).

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Using #= for integer comparison instead of #==
by Levente Uzonyi 01 Dec '10

01 Dec '10

Hi, I'm mostly ready with this cleanup, only a few methods left in the image that use #== for integer comparison. Some of them must use #==, others may be changed, but I wasn't sure if the code will work if it's changed or not. If you'd like to check these methods, then evaluate the following in a workspace: | hasMatch visitor | hasMatch := false. visitor := ParseNodeEnumerator ofBlock: [ :node | (node isMessageNode and: [ ((#(== ~~) identityIncludes: node selector key) and: [ node receiver isConstantNumber or: [ node arguments first isConstantNumber ] ]) ]) ifTrue: [ hasMatch := true ] ] select: [ :node | hasMatch not ]. SystemNavigation default browseAllSelect: [ :method | hasMatch := false. method decompile accept: visitor. hasMatch ] Cheers, Levente

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Terse Guide for Squeak (was: [Newbies] How to give numbers/anything to my program?)
by David T. Lewis 30 Nov '10

30 Nov '10

On Fri, Oct 01, 2010 at 06:58:55PM +0530, K. K. Subramaniam wrote: > On Friday 01 Oct 2010 2:58:55 am David T. Lewis wrote: > > On Thu, Sep 30, 2010 at 11:00:48AM +0200, jon jonsen wrote: > > > Does anybody know where to get a list of the (most common) > > > smalltalk-commands and a short description of them? > > > > Hi, > > > > The "Terse Guide to Squeak" provides a handy reference: > > http://wiki.squeak.org/squeak/5699 > UIManager was missing. I added it now. > > I would vote for this to go into the image (help->terse guide) or as an > external file along with the distro. I reformatted the Terse Guide so that it can be loaded into the Squeak help browser, and gave it a few updates and corrections. The result is in the Squeak developers' inbox. Dave

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FFI+Windows+moduleName
by Schwab,Wilhelm K 30 Nov '10

30 Nov '10

I need to connect to a library that by default is installed (on Windows) under ProgramFiles. What is the correct way to handle that? Should I put the full path in #moduleName, or is there a better way to do it? Bill

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Web Services - SoapOpera problems
by Cédrick Béler 30 Nov '10

30 Nov '10

Hi all, I'd like to try some webservice experiments. I loaded the last version of SoapOpera but then, I struggled a lot and I still can't make it work. First, I needed authentication and I didn't found how to do that in SOAP. I managed to make it work by hacking Kom. Does someone knows how to do that properly or if it's not possible? Second, I just can't make it work (whereas I can in PHP and it's dead simple :( with SoapClient). I have an error message saying that the interface is not known... After investigating a bit, I think that the problem is there is no "interpretation" of the wsdl file that describe the set of services. Can people confirm if I'm wrong or not ? What's the current state of SoapOpera development ? Are there alternatives ? TIA ps: in PHP $client = new SoapClient($WSDL, array('login'=> $LOGIN,'password'=> $PASS)); $client->TDOptionsPromotion( "whatever parameters"); in Smalltalk (not the example I tried but something else that nearly works, except I get one value, the last one, instead of an array of five) call := (SoapCallEntry tcpHost: 'footballpool.dataaccess.eu' port: 80) newCall. call targetObjectURI: 'data/info.wso'. call namespace: 'http://footballpool.dataaccess.eu'. call methodName: 'TopGoalScorers'. call addParameterNamed: 'iTopN' value: '5'. call invokeAndReturn.

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