Squeak-dev February 2007

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161 participants
240 discussions

Re: iPhone Holography (was: Sophie, Croquet; Croquet, Sophie)
by Brent Fulgham 23 Feb '07

23 Feb '07

Daniel Lanovaz wrote: > > ... Tim suggested that it might be more interesting to embed > > Croquet within Sophie than vice versa. > > A short commercial I created entitled "iPhone Holography" > is located here: > > http://web.mac.com/iphone2007/iWeb/Site/iphone.html > > It would have been interesting to create this > in a Croquet/Sophie combination, which I mentioned > to Tim Rowledge some time ago prior to the start of This was really cool! What software did you use to create the animation? -Brent

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Mock Objects for Squeak
by Serge Stinckwich 23 Feb '07

23 Feb '07

Hi all, i'm looking for a Mock Objects implementation in Squeak. On SqueakSource, there seems to be 2 implementations : Techable and MockObjects. Which one works ? There is another implementation, call SmallMock : http://www.adaptionsoft.com/downloads.html but the download page is no more available ... -- oooo Dr. Serge Stinckwich OOOOOOOO Université de Caen>CNRS UMR 6072>GREYC>MAD OOESUGOO http://purl.org/net/SergeStinckwich oooooo Smalltalkers do: [:it | All with: Class, (And love: it)] \ / ##

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Looking for old Smalltalks for DOS
by David Faught 23 Feb '07

23 Feb '07

Aaron wrote: >But I did have >another version of Smalltalk for DOS that worked entirely with text >windows, though I can't remember the precise name/version of the >software- Smalltalk/V 286 perhaps? > >Anyway, if you have a copy of this, could you please send it my way? > >In addition, I am very interested in any old version of Smalltalk for >various OSes, though only for Mac and PC hardware. I'd love to see a >real version of Smalltalk-80 running on an old Mac, for instance. >Please email me if you can help me out with this! There was a version of Timothy Budd's Little Smalltalk that used text windowing, but it is not a full Smalltalk-80 implementation by any means. Check out the other versions of Smalltalk at this link too. http://www.smalltalk.org/versions/LittleSmalltalk.html

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sweep failed to find exact end of memory
by Jens Lincke 23 Feb '07

23 Feb '07

Hi, On my machine doing a: f1 := Form extent: 800 @ 600 * 4 depth: 32. f2 := Form extent: 800 @ 600 * 4 depth: 32. f3 := Form extent: 800 @ 600 * 4 depth: 32. f4 := Form extent: 800 @ 600 * 4 depth: 32. results into an: "sweep failed to find exact end of memory" - vm crash both under the squeak 3.9-8 and 3.7-3 unix vms. my system: ubuntu i386 1GB RAM 1GB Swap Any ideas, why this happens? - Jens -

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Rootless Squeak on OS X?
by Aaron Reichow 23 Feb '07

23 Feb '07

John and the list- I'm wondering if we can get a rootless Squeak VM for Mac OS X created. I'm of the mind we could do it quite quickly and relatively easily. For a photo of what this looks like on Windows, see: http://www.d.umn.edu/~areichow/squeak/rootless/rootless-squeak.gif I was digging through some old Squeak files, and I happened upon a little gem that I've not seen many people use, which is a shame. That little gem of a goodie is Win32 Rootless! Basically, it sets the background color of Squeak to something with full transparency and then goes full-screen. It gives the working illusion that all your Squeak windows and naked morphs are just floating there, not encased in an inner world. It isn't perfect, and it is far from the power you'd get with real OS windows or that project ... But, it still is awesome and with a small bit of code does a lot of good toward bringing Squeak more into the fold of the host OS environment, but without having to make the sacrifices of other more OS-specific Smalltalks (e.g. Smalltalk MT). Like I said, it's basically making Squeak full screen and makings Squeak's background transparent and having the OS realize that. Which means all Squeak windows are on one layer, just like if you had a maximized Squeak window, in relation to other OS windows. You can't have a Squeak workspace and class browser with a Firefox window sandwiched between, or see various Squeak windows from the Windows taskbar That said, it really doesn't make a difference. The biggest thing I used rootless Squeak for was for widgets, just like with OS X's Dashboard. I generally did my main development in a regular image for various reasons, but I always had Squeak running with a few widgets of my own devising- a clock/weather thing, a program launcher, a menu of scripts I ran a lot, some things like that. As a Squeaker, I was able to implement this in Squeak 10x quicker than I could've writing HTML/JavaScript/CSS to create an OS X or Yahoo! widget. There has to be a way to do this on OS X! I'm hoping that John or someone else on the list might be willing to tackle it or be willing to tell me where to look myself. I'm quite handy with anything in Smalltalk, but when it comes to the workings of the VM or FFI calls into C I'm lost. It seems that this should be pretty easy to implement, if only because a) Mac OS X can do transparency too and b) the Windows version manages to be implemented in a measly ~5 pages of code, looking at the fileout. When you actually file it in, it's a tiny bit of code, relatively. It uses FFI to work its magic and doesn't require a plugin. As you see if you download the zip below, it was created for Squeak 3.0, however I've used it on newer Squeaks (at least up to 3.6, possibly 3.7 IIRC) with no problems or patches. For anyone interested in trying it, get it here: http://www.d.umn.edu/~areichow/squeak/Win32-Rootless.zip It only works with Windows 2000 and up, though I've never tried it on Vista. Anything older than Win2k doesn't support alpha channels. You just need to load in those two file-ins, and there is a class comment telling you what to evaluate. I used it on Windows XP quite a bit and never noticed any flakiness as a result. Regards, Aaron

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Easy Morphic GUI
by Robert Hawley 22 Feb '07

22 Feb '07

Thanks for this Noury. The interface building side of Morphic needs this kind of thing. On the matter of serialisation, as alternative it would be nice (also) to be able to generate the objects from code but I don't think this is very easy. Morphic is inconsistent between how coding works and how scripting works. (E.g. a morph responds to a forward: command in scripting but coding it involves messing around with (assuring) costumes - also the naming of components doesn't link to variable names very conveniently.) An alternative to byte serialisation could be to generate full Smalltalk initialization code that can build the object fully from scratch - does this sort of code exist? Yours Bob

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Refactoring of the Year?
by Andreas Raab 22 Feb '07

22 Feb '07

Hi Guys - I'm just in a writing mood today so I thought I'd share a short story. Most of you are probably aware how I have been bitching and moaning about "random refactorings" that move things from one corner of the system to the other, rename them incompatibly in the meantime and just generally leave more cruft and problems than they solve? Well, I just had a completely opposite experience that shows Refactoring Done Right. The short version is: We had some serious problems at Qwaq with SocketStream in Croquet (which is a 3.8 variant) that has a variety of problems in it (our main problem was the lock-up you get in next: if a particular sequence of steps occurs). I was finally able to track this down to SocketStream and was ready to start a discussion on Squeak-dev when I -just to confirm it- tried it in 3.9 and noticed that it worked just fine there and that 3.9 has the FastSocketStream version instead of the 3.8 version. So ... okay I thought this is going to break a number of things since really, it's a complete reimplementation so what can you expect. But I was willing to debug it and fix the remaining problems because SocketStream had proven to be simply to unreliable. Filed in SocketStream, immediately ran into two problems (missing methods in Socket that it required) added those. And that was it. I didn't change another line of code other than these (basically internal) changes. It just worked. It has the same interface, it works the same. Only better. Faster. More reliable. Suffice it to say, I was impressed. I had gotten so used to the assumption that a new version of a class (as well as Squeak) is so fundamentally incompatible with previous versions that I stopped porting stuff when we reached 3.9. SocketStream was the nicest exception to that pattern that I've seen in the last two years or so. Can I officially request that we award Goran a medal for the "Refactoring of the Year"? Something that basically nobody noticed but that has a profound impact on network performance and reliability certainly qualifies for that. Cheers, - Andreas

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not a Squeak people person
by Ralph Boland 22 Feb '07

22 Feb '07

I thought I was listed on Squeak People but when I checked today I wasn't there. Do people get removed from this list if they are not active? Thanks Ralph Boland

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Question for Elections
by Giuseppe Luigi Punzi 22 Feb '07

22 Feb '07

I can't login to post a question, and I don't know. Somebody can post it for me? Q:I think improve the image going to a Developers way can benefit us with more developers, companys etc.. supporting Squeak. Squeak is the only Smalltalk flavour opensource thath could be "fight" versus commercial smalltalks. What do you think about this? How you will help to get a good GUI Builder (for example), and other packages very importants to get a more "profesionnal" image (profesionnal on more comercial projects based on..) -- Giuseppe Luigi Punzi - Consultor :: ZYO Consulting :: email: glpunzi(a)zyoconsulting.com tlfno: +34 675 145 912 web: http://www.zyoconsulting.co

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Q: Howto alter list selection colors
by Brian T. Rice 22 Feb '07

22 Feb '07

Quick question: If I create a PluggableListMorph and want the selection to be a high-contrast inversion of color (say, white-on-black/blue) instead of the red-on-grey of the current Squeak, where would I look? How do I control this? Looking through Preferences didn't reveal anything relevant, and PLM doesn't make its internal structure very obvious. Thanks! -- http://briantrice.com

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