Squeak-dev November 2006

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157 participants
223 discussions

veryDeepCopy, ImageSegments, and actionMaps
by Ned Konz 17 Aug '23

17 Aug '23

Any Object can have dependents whether or not it has an instance variable to keep track of them (these are kept in the DependentsFields class variable of Object). The only class that keeps its own dependents is Model. Any Object can have an actionMap. These are supplied by EventManager class by default, and are stored in the ActionMaps class variable of EventManager. The only class that keeps its own action maps is Morph. When we veryDeepCopy an object we also copy the global dependents (see DeepCopier>>fixDependents). However, we don't copy the actionMap in those cases where it's held by the EventManager class. When we file out an object that uses DependentsFields out into an ImageSegment, we also file out the dependents (see ImageSegment>>dependentsSave:) if it's in a project. We do this by adding a project parameter called #GlobalDependentsInProject. However, we don't file out the actionMap in those cases where it's held by the EventManager class. My question is this: should we fix these behaviors (copying and serialization) to include these "global action maps" just like we already include the "global dependents"? Or should we discourage the use of the "global action maps"? -- Ned Konz http://bike-nomad.com GPG key ID: BEEA7EFE

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Trying to build SerialPlugin for IrDA under MPW (MacOS 8.6)
by Hans-Martin Mosner 24 May '12

24 May '12

Hi, I recently got a serial IrDA adapter and wanted to play around with it under Squeak. This adapter has a baudrate switching mechanism which depends on toggling the DTR and RTS lines in the correct sequence. To support this, I wanted to build a new SerialPlugin with an additional primitive. However, the plugin as built with MPW does not seem to be accepted by the VM, which still uses the internal plugin in all cases. I've tried placing the plugin in a 'Plugins' subfolder of the VM's folder, and then directly into the VM folder, without any success. I have considered placing debug outputs in appropriate places in the VM, but building a complete VM with MPW is not easy - I would have to create an MPW makefile for the whole shebang, which is more work than I can invest at the moment. Does any of you Mac aficionados have an idea where the problem could be? I have appended the plugin and corresponding source files in a ZIP file (it's not big) so if you want to try it out you could do it right now :-) BTW, would it make sense to incorporate support for switching serial port parameters of an open port into the standard plugin? Closing and opening a port just to change the baud rate seems a little overkill... Cheers, Hans-Martin

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TextMorph behavior
by Marcus Pedersén 18 Jan '11

18 Jan '11

Hi! I have been trying class TextMorph out for making an editable textfield for my GUI. One thing I can't figure out is how to make the text "grow" horisontaly when you write instead of verticaly. I am after the behavior similar to the spotlight search text field in mac. If you write loads of text the oldest text "dissapear" (visualy) on the left hand. I have tried autoFit: false and wrapFlag: false without any desired results. Doesn't TextMorph contain this functionality from start? Do I need to subclass and write the function from scratch? Many thanks in advance! Marcus

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Loading the OpenGL package (was: Games with Squeak)
by Diego Fernandez 17 Apr '09

17 Apr '09

On 10/13/06, Andreas Raab <andreas.raab(a)gmx.de> wrote: > Edgar J. De Cleene wrote: > > Andreas, as you see no package said " OpenGL" in the provided link. > > I think you should learn a little about using Squeaksource: "Versions" Ouch! I missed the package too, because in www.squeaksource.com usually there is one MC package per "Project". Anyway, I'm trying to load OpenGL-ar.36.mcz in Squeak 3.9 but I get: Syntax Error: glBindBufferARB(target, buffer) "This method was generated by OGLExtManager" <Argument expected ->apicall: void 'glBindBufferARB' (long ulong)> Any clue on how to solve this error? (It looks that it's created with a "special" compiler) And another question... As I wrote in the previous mail I've started to do some SDL bindings. But I think that maybe it's a waste of time, since today nearly all machines have OpenGL, and Squeak already has objects to deal with sound and joysticks.... so instead of using SDL for 2D graphics is better to use OpenGL for the same thing, what do yo thing about that? Cheers, Diego

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What is the proper way to get the Refactoring Browser in 3.9
by Hilaire Fernandes 07 Dec '07

07 Dec '07

I have installed RB and AST from SqueakMap for 3.9, but I have many random problem swith features not working as hierarchy browsing, simple editing in the browser, refactoring tools as renaming methods. These problems happen more or less randomly. Hilaire

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SqF feedback
by stéphane ducasse 21 Jul '07

21 Jul '07

Hi I'm reposting this email since I have the impression that the point was lost in its original thread. ... - Normally after election, politicians do not really listen anymore and I would like to do the inverse. I would really like to know what you expect or would like to see put in place. We have some ideas (bounty system, better process) and I will really listen what the new boarders want to do (I'm even eager to see that :)). We do not have the monopole of good ideas, so if you have some points that you would like to see happening please mention it. Stef

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hash method
by Houssam Fakih 31 Jan '07

31 Jan '07

Hi, When I redefine the = operation for a class I should redefine its hash method. My question is about the definition of the hash method. I read that the method must return a SmallInteger whose value is related to the receiver. I would like to know if there is a general pattern adopted in Squeak for that. I get a look in the Squeak classes but it doesnt help. Thanks, Houssam ____ "Le paradis touche les pieds des mères..." >>> http://csl.ensm-douai.fr/fakih

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What happened to the SqueakDoc swiki ?
by karl 10 Dec '06

10 Dec '06

I was updating links from squeak.org to the new wiki.squeak.org and noticed some links to the old SqueakDoc swiki were dead. http://minnow.cc.gatech.edu/SqueakDoc.11 Anybody have any info or a backup of these documents ? And should we do static backups of all the documents linked in from Georgia Tech but not on the swiki.squeak.org ? Karl

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Squeak and Namespaces
by Aaron Reichow 06 Dec '06

06 Dec '06

Ahoy! I know this might sound like a naive question... But why haven't we implemented namespaces yet? I'm sure there have been some attempts- but what is the status of namespaces in Squeak? I ask because it seems that, to me, it would be relatively easy to implement an intelligent namespace system in Squeak, something we all could decide on. It could even offer backwards compatibility in that, for now, all the classes in the image are just part of the default namespace, that way nothing gets broken. Ideas? Thoughts? Maybe a pointer to a discussion where this was already hashed out? Thanks! Regards, Aaron

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SqueakMap Package Loader UI
by Brian Rice 06 Dec '06

06 Dec '06

Hi all, I spent yesterday evening demo'ing Squeak to a fellow who works with EdUbuntu and OLPC since he wanted to write his educational software in Squeak to save space on the laptop. His kids were there and really got into it after some of the capabilities were made more obvious. I got some great feedback, and it's always cool for me to show off Squeak games (the RTS that Eddie Cottongim made years ago is perhaps the best of the non-EToys style) and coding to kids, since I don't regularly work with them and most developers are such sticks-in-the- mud about the weird UI. Anyway, it occurred to me that just a little bit of effort in the UI design department would quickly improve Squeak's draw. Since I know the SqueakMap package loader and it's Squeak's gateway to the community for newbies as they start up Squeak (or should be), I started there. I've added some buttons to a toolbar at the top and stole MessageNames' search bar to be more clear about the UI. Current Screenshot (doesn't reflect help-balloon cleanups): http://briantrice.com/Images/Squeak/SMLoader1.jpeg With a filter on: http://briantrice.com/Images/Squeak/SMLoader1Filtered.jpeg These are only incremental changes, since I don't want to take on a huge-scope project, and don't own this and other packages, so a huge fork would be politically difficult. The best application code I found for Morphic UI was actually the IRC client, although it is a bit spec-heavy. What do people think of this idea? Particularly the package owners, like Göran, but also whoever is "in charge" of the overall UI face of Squeak (that is, whoever would complain loudest if I wanted to totally re-arrange the world menus). Also, which projects make this kind of effort obsolete or easier? I know about and like the Services/Commands framework and UI, and Tweak's menubar system, but don't know what they seek to replace. What I don't know is whether there is a simple menu-bar or other such system for easily setting up some shared-styled UI features that get the salient features right in front of the user instead of burying them in context menus. Okay, I'll stop here for now. Feedback welcome! -- -Brian http://briantrice.com

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