Squeak-dev March 2000

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131 participants
580 discussions

RE: How to determine screen depth?
by Doug Way 02 Mar '00

02 Mar '00

On Wed, 1 Mar 2000, Tim Rowledge wrote: > > > Also, is there some way to change the host display > depth/screen size? > > > (ie for a multimedia presentation which requires 640@480) > > > > Or will I need to roll my own plugin? > > Screen depth: <Display depth> tells you, <Display newDepth: 8> tells it - 1,2,4,8,16 & 32 are usually acceptable. > Screen size: <DisplayScreen actualScreenSize> tells you, and primitive 92 (which is not yet referred to in 2.7) would try to set the screen mode, depth etc. > No need to worry about strange scripts. Er, I think by "host display" they meant the host operating system display depth/size, not the Squeak display depth/size. (Although I could be wrong.) I'm nearly positive that you'd need to roll your own pluggable primitive to set the host screen's depth or size. (Not only that, but doing this from an application is often frowned upon, even for applications with much greater native OS access than Squeak.) - Doug Way EAI/Transom Technologies, Ann Arbor, MI http://www.transom.com dway(a)mat.net, @eai.com

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RE: [BUG] Interval Copy
by agree＠carltonfields.com 02 Mar '00

02 Mar '00

> The fix is to define shallowCopy in class Interval. But the > only way that I can think of to get the version in class > Object, is to write > > shallowCopy > ^ self perform: #shallowCopy withArguments: #() > inSuperclass: Object. This is, of course, an example discussed during the "superDuperSuper" discussion in another thread. I think we uniformly concluded that recourse to superSuper, whether directly or by indirect means indicates that something deeper is broken, requiring more careful refactoring. Thus, I conclude that the ugliness is probably more than skin-deep here, and requires deeper thinking. Recall that the redefinition of "species" (defined as the preferred class for reconstruction) implies that messing with shallowCopy might yield some undesireable results. In the meanwhile, and presuming that modifying shallowCopy would not break things, perhaps the following will do: shallowCopy ^ self class from: start to: stop by: step

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[BUG] ? Cursor wait keeps comming back
by Stewart MacLean 02 Mar '00

02 Mar '00

I have wrapped some code within Cusor wait showWhile: [...]. I have been doing some debugging within the block, so sometimes it gets confused. So I Cursor normal beCursor. Which changes the cursor for a while, until I activate another Squeak window, when it turns back into the waiting Cursor. Useless for pointing with! Its really frustrating and I was wondering if this due to something I'm doing or is something which could be fixed? Thanks, Stewart

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Re: who's who on swiki
by Aran Lunzer 02 Mar '00

02 Mar '00

> I don't think I did anything strange... I'm using Netscape 4.7 for > SGI... I tend to have the character set preference on "Japanese"... > er... what else might be relevant?? By checking using a PC I've found that it does seem to be a character-set problem. The text loaded into the text field when you ask to edit is truncated at the o-umlaut in Goran Hultgren's entry. Using the PC, I've rebuilt the list from the previous version. In fact, the o-umlaut doesn't display correctly on any of the systems I have here - Goran's name appears as `G " an'. Is anyone else having trouble with this kind of character? (Sorry to have temporarily truncated you, Goran :-) Aran -- Aran Lunzer aran(a)bigfoot.com Meme Media Laboratory lab: +81 11 706 7262 / fax 7808 Hokkaido University Sapporo 060-8628, JAPAN http://ca.meme.hokudai.ac.jp/people/aran/

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RE: How to determine screen depth?
by Raab, Andreas 02 Mar '00

02 Mar '00

Russel, > Let me rephrase the minimum of what I am looking for: a way to > automatically change Squeak's <Display depth> to match the > depth of the display of the host OS. What you're probably looking for is the equivalent of DisplayScreen>>actualScreenSize (returning the size of the OS window) just as DisplayScreen>>actualScreenDepth. > >I'm nearly positive that you'd need to roll your own > >pluggable primitive to set the host screen's depth or size. > >(Not only that, but doing this from an application is often > >frowned upon, even for applications with much > >greater native OS access than Squeak.) This certainly depends - I've never seen anyone frowning at games in this respect. And for a 'player mode' this makes a lot of sense since you can test out how things will look at certain display resolutions. In the end it's always a question of what the application is doing and while it may not be very well received for a 'programming environment' it's perfectly okay for others. > Most multimedia software that has an option to take over the > screen like Squeak either offers a "letterbox" mode, where eg > a 640@480 screen sits in the middle of a black expanse, or a > "fullscreen" mode where the host OS display is changed to match > the required 640@480. > > Squeak can do the "letterbox" mode, but only by either (a) > shipping as an 8bit image (with resulting loss of display > quality) or (b) asking the user to switch to an 8bit depth > if necessary. It can't do the "fullscreen" mode without getting > the user to switch their own host OS display settings before > running. Right now this is true. I am, however, planning to put some effort in making this work for playing with 3D hardware accelleration (in which case you may have to switch to a lower resolution due to limited VRAM on the graphics card). It's actually not very hard to do (at least on Win/Mac systems). Andreas

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A Squeak ORB
by Ranjan Bagchi 02 Mar '00

02 Mar '00

Hi -- I'm increasingly becoming interested in CORBA and I'd think that it's a fairly easy way to expose Squeak within applications where it really excels (back-end stuff with a good deal of complexity). Does anyone know of an ORB written in Squeak, or perhaps an effort to bolt one of the more popular ORBS (Mico, TAO) onto Squeak? Thanks, Ranjan Bagchi __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

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Re: [BUG] "method source with it" broken in 2.8alpha
by Bob Arning 02 Mar '00

02 Mar '00

On Wed, 1 Mar 2000 17:26:39 -0500 (EST) Doug Way <dway(a)mat.net> wrote: >By the way, is there some way to get a hold of the text of a debugger's >error stack? >From the file SqueakDebug.log, assuming you have the preference logDebuggerStackToFile set to true. Cheers, Bob

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Re: [VIRUS WARNING] Re: Check this
by Paul FitzGerald 02 Mar '00

02 Mar '00

Has anyone thought about how one would write a virus for squeak? I only bring this up because the best way to protect yourself is to know your enemy. Hey, maybe we could have a virus writing contest!?? Paul FitzGerald ---------- >From: "Jecel Assumpcao Jr." <jecel(a)merlintec.com> > I found this very offensive - any viruses on this list should be written in > Squeak (or Python, at the very least!), don't you think? > > -- Jecel

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[ENH][FIX] URL arguments
by Michael Rueger 02 Mar '00

02 Mar '00

Change Set: URL-mir Date: 3 August 1999 Author: Michael Rueger Adds a method to build a list of URL args without encoding the arguments. Usefull if you have args already containing special characters. Also adds a class URLArgumentList which does not change the order of arguments. -- "To improve is to change, to be perfect is to change often." Winston Churchill +------------------------------------------------------------+ | Michael Rueger | | Phone: ++1 (818) 623 3283 Fax: ++1 (818) 623 3559 | +---------- Michael.Rueger.-ND(a)corp.go.com ------------------+ "Change Set: URL-mir Date: 3 August 1999 Author: Michael Rueger Adds a method to build a list of URL args without encoding the arguments. Usefull if you have args already containing special characters. Also adds a class URLArgumentList which does not change the order of arguments. "! !HTTPSocket class methodsFor: 'utilities' stamp: 'mir 7/28/1999 15:52'! argStringUnencoded: args "Return the args in a long string, as encoded in a url" | argsString first | args class == String ifTrue: ["sent in as a string, not a dictionary" ^ (args first = $? ifTrue: [''] ifFalse: ['?']), args]. argsString _ WriteStream on: String new. argsString nextPut: $?. first _ true. args associationsDo: [ :assoc | assoc value do: [ :value | first ifTrue: [ first _ false ] ifFalse: [ argsString nextPut: $& ]. argsString nextPutAll: assoc key. argsString nextPut: $=. argsString nextPutAll: value. ] ]. ^ argsString contents ! ! OrderedCollection subclass: #UrlArgumentList instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Network-Url'! !UrlArgumentList methodsFor: 'enumerating' stamp: 'mir 7/27/1999 16:01'! associationsDo: aBlock self do: [:each | aBlock value: each]! ! !UrlArgumentList methodsFor: 'private' stamp: 'mir 7/27/1999 16:20'! argumentNamed: argName ^self detect: [:each | each key = argName] ifNone: [nil]! ! !UrlArgumentList methodsFor: 'adding' stamp: 'mir 7/27/1999 16:19'! add: argName value: argValue | argAssociation | argAssociation _ self argumentNamed: argName. argAssociation isNil ifTrue: [self add: (argName -> (OrderedCollection with: argValue))] ifFalse: [argAssociation value add: argValue]! ! "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "! UrlArgumentList class instanceVariableNames: ''! !UrlArgumentList class methodsFor: 'instance creation' stamp: 'mir 7/27/1999 16:25'! with: argAssoc | argList | argList _ self new. argList add: argAssoc key value: argAssoc value. ^argList! ! !UrlArgumentList class methodsFor: 'instance creation' stamp: 'mir 7/27/1999 16:26'! with: firstArgAssoc with: secondArgAssoc | argList | argList _ self with: firstArgAssoc. argList add: secondArgAssoc key value: secondArgAssoc value. ^argList! ! !UrlArgumentList class methodsFor: 'instance creation' stamp: 'mir 7/27/1999 16:26'! with: firstArgAssoc with: secondArgAssoc with: thirdArgAssoc | argList | argList _ self with: firstArgAssoc with: secondArgAssoc. argList add: thirdArgAssoc key value: thirdArgAssoc value. ^argList! !

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[ENH] Thread safe Transcript
by Michael Rueger 02 Mar '00

02 Mar '00

Change Set: Transcript-safe-mir Date: 1 March 2000 Author: Michael Rueger, Andreas Raab Makes the Transcript thread safe. -- "To improve is to change, to be perfect is to change often." Winston Churchill +------------------------------------------------------------+ | Michael Rueger | | Phone: ++1 (818) 623 3283 Fax: ++1 (818) 623 3559 | +---------- Michael.Rueger.-ND(a)corp.go.com ------------------+ "Change Set: Transcript-safe-mir Date: 1 March 2000 Author: Michael Rueger, Andreas Raab Makes the Transcript thread safe. "! WriteStream subclass: #TranscriptStream instanceVariableNames: '' classVariableNames: 'AccessSema ' poolDictionaries: '' category: 'Collections-Streams'! !TranscriptStream methodsFor: 'stream extensions' stamp: 'mir 1/11/2000 11:41'! endEntry "Display all the characters since the last endEntry, and reset the stream" self semaphore critical:[ self changed: #appendEntry. self reset. ].! ! !TranscriptStream methodsFor: 'private' stamp: 'mir 1/11/2000 11:41'! semaphore ^AccessSema ifNil:[AccessSema _ Semaphore forMutualExclusion]! !

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