Squeak-dev April 1999

squeak-dev@lists.squeakfoundation.org

130 participants
319 discussions

Re: Thinking about a better UI (managing screen real estate)
by Pennell's 24 Apr '99

24 Apr '99

>(2) Add (2a) a (possibly) stay-put "open windows flap" (somewhat like the task >bar in M$Windows or icon box on some X window managers), or (2b) add all open >and collapsed windows in the current project (and possibly all other projects) >to the desktop menu. (I'm not a great fan of ALT-TAB for switching between >windows.) This would make it easier to have loads of windows open and jump >between them. Can I ask why you don't like ALT-TAB? I've been following this thread and trying to understand my own reasons for using the keyboard exclusively for some operations, the mouse for others and shifting between the two under some conditions for others. I use ALT-TAB when: - my hands are already on the keyboard - the text in the buttons on the task bar isn't enough to tell me which window I need - I'm toggling between two different windows I like the option for "stay-put" flaps, perhaps there can be an option for manually activating a flap. I find automatic flaps very annoying. Perhaps it is my lack of hand-eye coordination, but they always pop up over something else I'm aiming for. -david

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Re: Win32 Sources for Squeak 2.4 VM?
by Peter William Lount 24 Apr '99

24 Apr '99

Hi, The date and time on the Win32Sources.zip file referenced below is: 16-Jan-99 01:43 . In fact almost all of the files in this directory have the same date. Where is there a version for 2.4b? Peter William Lount peter(a)smalltalk.org http://www.smalltalk.org/ ---------- From: Ian Trudel <ian(a)monk.cgocable.ca> To: squeak(a)cs.uiuc.edu Subject: RE: Win32 Sources for Squeak 2.4 VM? Date: April 24, 1999 5:11 AM Here it is http://isgwww.cs.uni-magdeburg.de/~raab/squeak/src/Win32Sources.zip Ian : -----Original Message----- : From: David LeBlanc [mailto:whisper@accessone.com] : Sent: samedi 24 avril 1999 05:56 : To: squeak(a)cs.uiuc.edu : Subject: Win32 Sources for Squeak 2.4 VM? : : : Are they available somewhere? : : Sincerely, : : Dave LeBlanc :

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Win32 Sources for Squeak 2.4 VM?
by David LeBlanc 24 Apr '99

24 Apr '99

Are they available somewhere? Sincerely, Dave LeBlanc

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Squeak 2.4b available
by Dan Ingalls 24 Apr '99

24 Apr '99

Folks - I have just put out what I hope to be the last iteration of the Squeak 2.4 release. It adds a number of small fixes beyond those of 2.4a, including... Restores ability to click in the Getting Started window and browser the SqueakDoc (*) Wiki. Recovers properly if you start up without a sources file in morphic. EventRecorder works again, with voice-over, and across project changes. Has no (count 'em) line-feed characters in the sources file. Adopts the Disney numbering for updates (saves me much time). Fixes a slight problem in the Wacom tablet driver (new Mac VM). You may continue to enjoy your 2.4a images -- just call for updates when you want these changes. - Dan (*) The SqueakDoc swiki has been idle and out of date for some time now. Paul McCullough <paulmc(a)ftconnect.com> has graciously agree to start folding some of the useful information from our mailing list into this database (he will be working back from the present). I will be working with him to establish a reasonable front page and set of categories for this information. Plese visit this server from time to time and tell us what you like and don't. If you have contributions that you would like to see included, please pass them along to us in a message or point us at the source if it's already on the web.

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Re: a question about fonts
by Bruce O'Neel 23 Apr '99

23 Apr '99

Hi, In terms of rasterizers there is a TrueType rasterizer called freetype at http://www.freetype.org. There is a system which uses it with X at http://root.cern.ch and the results are pretty good. cheers bruce >Hi Andreas, Duane, Reiner & other Squeak friends! > >Thanks for the lessons on fonts. After reading your messages, I did a bit >of web browsing and I can summarize what I've learned so far about fonts >(for those lurkers that are interested). > >* There are 2 types of font: Bitmap fonts and Outline fonts >* Bitmap fonts are pre-rendered for a specific platform resolution and >point size. >* Outline fonts (Andreas called them "Vector" fonts) are fonts that are >stored as coordinates that describe the outlines of their characters -- True >Type fonts (invented by Apple & Microsoft) are examples of outline fonts. >* Outline fonts are rendered into Bitmap font formats by rasterizing >software (this connects the dots, draws the curves and fills each character >in) >* Rasterizing software is generally built into most windowing operating >systems >* There are two types of rasterizing - easy and hard >* Easy rasterizing algorithms take the Outline font coordinates and create >Bitmap fonts out if them, but they do not make use of the auxiliary >information (often described as "hints"). >* The more complicated rasterizing algorithms use all available information >from the Outline font definition to make the most "pretty", scaleable font >it can. This process takes longer, so the rendered font is generally cached >(like in the StrikeFont cache). > >[I gather from your notes that Squeak's rasterizing algorithms only do the >"easy" rendering, which is accurate only in larger point sizes] > >There is lots of technical jargon on the web (and in the Squeak sources) >about fonts, and it is no easy task to find documents that describe all of >the terms (I'm still wondering what "kerning", "ligatures" and "splines" >are, although I can guess at their meanings from the context) > >Question: Since OS's apparently come with built in rasterizing software, >couldn't a primitive call be added to Squeak to accomplish the more >difficult rasterizing tasks? If an Outline font could be converted into a >Bitmap font, by passing it with size parameters to the OS rasterizing >routines, then the generated Bitmap font could be converted (if needed) and >cached in the StrikeFont cache. [Note: I still know nothing about >primitives, so this may be a dumb question] > >Observation 1: Even if Squeak's rasterizing algorithms can only handle the >"simple" rasterizing, I think that adding "asStrikeFont" behavior to the >TTSampleFontMorph would be of benefit for at least some point sizes. These >could be used for banners, titles, etc. in our Morphic projects. > >Observation 2: Several people have told me that the full rasterizing >algorithms are also very complex and challenging to write. The general >consensus is: "don't go there". This may be true, but I have found hints >on the web (http://w3c1.inria.fr/Fonts/#type1) that there are specs and free >implementations available that maybe could be ported to Squeak (apparently a >low quality rasterizer is available in Ghostscript, and rasterizing source >is distributed with X). Unfortunately, I am not familiar with either of >these free sources. > >This is a deep pool, but interesting stuff! > >---==> Chris >

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Re: a question about fonts
by Norton, Chris 23 Apr '99

23 Apr '99

Hi Andreas, Duane, Reiner & other Squeak friends! Thanks for the lessons on fonts. After reading your messages, I did a bit of web browsing and I can summarize what I've learned so far about fonts (for those lurkers that are interested). * There are 2 types of font: Bitmap fonts and Outline fonts * Bitmap fonts are pre-rendered for a specific platform resolution and point size. * Outline fonts (Andreas called them "Vector" fonts) are fonts that are stored as coordinates that describe the outlines of their characters -- True Type fonts (invented by Apple & Microsoft) are examples of outline fonts. * Outline fonts are rendered into Bitmap font formats by rasterizing software (this connects the dots, draws the curves and fills each character in) * Rasterizing software is generally built into most windowing operating systems * There are two types of rasterizing - easy and hard * Easy rasterizing algorithms take the Outline font coordinates and create Bitmap fonts out if them, but they do not make use of the auxiliary information (often described as "hints"). * The more complicated rasterizing algorithms use all available information from the Outline font definition to make the most "pretty", scaleable font it can. This process takes longer, so the rendered font is generally cached (like in the StrikeFont cache). [I gather from your notes that Squeak's rasterizing algorithms only do the "easy" rendering, which is accurate only in larger point sizes] There is lots of technical jargon on the web (and in the Squeak sources) about fonts, and it is no easy task to find documents that describe all of the terms (I'm still wondering what "kerning", "ligatures" and "splines" are, although I can guess at their meanings from the context) Question: Since OS's apparently come with built in rasterizing software, couldn't a primitive call be added to Squeak to accomplish the more difficult rasterizing tasks? If an Outline font could be converted into a Bitmap font, by passing it with size parameters to the OS rasterizing routines, then the generated Bitmap font could be converted (if needed) and cached in the StrikeFont cache. [Note: I still know nothing about primitives, so this may be a dumb question] Observation 1: Even if Squeak's rasterizing algorithms can only handle the "simple" rasterizing, I think that adding "asStrikeFont" behavior to the TTSampleFontMorph would be of benefit for at least some point sizes. These could be used for banners, titles, etc. in our Morphic projects. Observation 2: Several people have told me that the full rasterizing algorithms are also very complex and challenging to write. The general consensus is: "don't go there". This may be true, but I have found hints on the web (http://w3c1.inria.fr/Fonts/#type1) that there are specs and free implementations available that maybe could be ported to Squeak (apparently a low quality rasterizer is available in Ghostscript, and rasterizing source is distributed with X). Unfortunately, I am not familiar with either of these free sources. This is a deep pool, but interesting stuff! ---==> Chris

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Re: How can I run a Headless Squeak app?
by Nathan Wallace 23 Apr '99

23 Apr '99

OK, I think I've got the headless VM running... thanks How do I specify what smalltalk code should be run when the image starts up? Thanks, Nathan Ian Piumarta wrote: > > > How can I create and run a headless squeak app? > > I am using Red Hat linux. > > Extract the unix sources, then from the top-level dir (the one > containing "src" "util" etc.) do: > > make mkdir > make CFLAGS+=-DHEADLESS > > If all goes well, the build subdir will contain a VM that has > display support removed. > > Ian

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Re: VM Crash when running squeak2.4 on my notebook...
by Laurence Rozier 23 Apr '99

23 Apr '99

Dan Ingalls wrote: > Pablo and Laurence - > > It is interesting that you both have IDENTICAL crash dumps. I found this alarming, and immediately dove into what exactly is happening in the VM. However what is happening (loading the instVar, 'key' from an assoication in the Smalltalk dictionary) is very simple, and almost impossible to crash, except if accessing a field of a corrupt object. > > Sooo... > > A possible explanation is that this is the first fatal thing that happens when you start up an image that was corrupted by some kind of file conversion (CR/LF in text?), and that you both happen to have had this happen. I would greatly appreciate it if you would attempt to reinstall the Squeak image being careful that every transfer from the original files is done in pure binary mode, and let me know immediately of your results. In both cases, I downloaded the .zip file from http://isgwww.cs.uni-magdeburg.de/~raab/squeak/Squeak.zip That really *should* insulate the image file from corruption. I downloaded this file and installed it successfully on another machine. I then copied that file over my network and installed it on my laptop in a new directory. I get the same crash.dmp result. -Laurence > > > Thanks you in advance. > > - Dan > > > I am having a big problem when I try to run squeak in my notebook. This > >is an IBM thinkpad i-series 1411 and when I try to run the squeak.exe with > >the image the following dump appears: > > > >--------------------------------------------------------------------- > >Thu Apr 22 21:32:20 1999 > > > >Current byte code: 209 > >Primitive index: 264 > >Stack dump follows: > > > >24058060 Dictionary>scanFor: > >24057904 Set>findElementOrNil: > >24057748 Dictionary>at:ifAbsent: > >24058836 [] in SystemDictionary>send:toClassesNamedIn: > >24057592 OrderedCollection>do: > >24057436 SystemDictionary>send:toClassesNamedIn: > >24057280 SystemDictionary>processStartUpList > >24015132 SystemDictionary>snapshot:andQuit: > >24014940 ScreenController>snapshotAndQuit > >24014504 ScreenController>yellowButtonActivity > >24014348 ScreenController>redButtonActivity > >24013840 MouseMenuController>controlActivity > >24013684 Controller>controlLoop > >24013528 Controller>startUp > >24013996 [] in ControlManager>activeController: > >24014152 [] in BlockContext>newProcess > > > >(And the message in the message box that comes up is "Fatal error, CV crash" > >or something like that) > > > >Does anybody know what the problem might be? > > > >Thanks in advance. > > > >Pablo S. Casullo > >mailto:pcasullo@baufest.com > > > >---------------------------------------------------------------------- > >Baufest > >http://www.baufest.com > >NEW Phone : +54-11-4807-8080 > >NEW Fax : +54-11-4801-6146 > >Av. Las Heras 3257 > >(1425) Buenos Aires - Argentina > >----------------------------------------------------------------------

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How can I run a Headless Squeak app?
by Nathan Wallace 23 Apr '99

23 Apr '99

How can I create and run a headless squeak app? I couldn't seem to find any doc... :-) I am using Red Hat linux. Thanks, Nathan

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VM Crash when running squeak2.4 on my notebook...
by Pablo Casullo 23 Apr '99

23 Apr '99

Hello Everybody I am having a big problem when I try to run squeak in my notebook. This is an IBM thinkpad i-series 1411 and when I try to run the squeak.exe with the image the following dump appears: --------------------------------------------------------------------- Thu Apr 22 21:32:20 1999 Current byte code: 209 Primitive index: 264 Stack dump follows: 24058060 Dictionary>scanFor: 24057904 Set>findElementOrNil: 24057748 Dictionary>at:ifAbsent: 24058836 [] in SystemDictionary>send:toClassesNamedIn: 24057592 OrderedCollection>do: 24057436 SystemDictionary>send:toClassesNamedIn: 24057280 SystemDictionary>processStartUpList 24015132 SystemDictionary>snapshot:andQuit: 24014940 ScreenController>snapshotAndQuit 24014504 ScreenController>yellowButtonActivity 24014348 ScreenController>redButtonActivity 24013840 MouseMenuController>controlActivity 24013684 Controller>controlLoop 24013528 Controller>startUp 24013996 [] in ControlManager>activeController: 24014152 [] in BlockContext>newProcess (And the message in the message box that comes up is "Fatal error, CV crash" or something like that) Does anybody know what the problem might be? Thanks in advance. Pablo S. Casullo mailto:pcasullo@baufest.com ---------------------------------------------------------------------- Baufest http://www.baufest.com NEW Phone : +54-11-4807-8080 NEW Fax : +54-11-4801-6146 Av. Las Heras 3257 (1425) Buenos Aires - Argentina ----------------------------------------------------------------------

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