Squeak-dev April 2007

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151 participants
201 discussions

The Weekly Juan #10: "Cheap, High Quality Fonts in Squeak"
by Steve Moffitt 28 Apr '07

28 Apr '07

Hi Juan -- nice work but I had trouble using OmniBrowser with the change set. The letters were interesting to say the least.I am using Damien's 115 dev environment with unix vm 3.9-7. Steve

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[ANN] GemStone BOF at Smalltalk Solutions 2007
by Martin McClure 28 Apr '07

28 Apr '07

Come to the GemStone BOF at Smalltalk Solutions in room 201B from 5:30 until 7:00 on Monday Apr 30th. You can meet the GemStone/S team, learn what's new in GS/S-64 2.2, discuss the GemStone port of Seaside and Monticello, and witness the unveiling of an edition of GemStone/S that's free -- even for commercial use. (If you can't attend, you can watch for the announcement in your inbox.) If you're in the Toronto area, you're welcome to drop in even if you're not attending the conference. -Martin

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Squackers meeting 2007-05-02
by Craig Latta 28 Apr '07

28 Apr '07

Hi all-- If you're in the San Francisco Bay Area, please come to the next gathering of the Squeak Hackers ("Squackers"). It'll be on Wednesday, 2 May, from 8pm to 10pm pacific time at my place, with a potluck dinner at 7pm. RSVP to me for directions. We usually meet the first Wednesday of each month. We'll screen the "Squeakers" movie, and I'll show off recent work with object memory visualization[1], the Spoon release[2], and the Spoon book[3]. If you have something you'd like to show on the big screen, please let me know! The meeting will also be accessible live online through Skype; call me there at "threnkeldwingnut". see you then! -C [1] http://netjam.org/spoon/viz [2] http://netjam.org/spoon/releases/current [3] http://netjam.org/spoon/the%20Spoon%20book.pdf -- Craig Latta improvisational musical informaticist www.netjam.org Smalltalkers do: [:it | All with: Class, (And love: it)]

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Pending Mac Carbon VM 3.8.17b3
by John M McIntosh 27 Apr '07

27 Apr '07

I've pushed out a 3.8.17b3 VM that includes Bert Freudenberg's work on large cursor support for OLPC, plus it includes a bug fix for cursor tracking. This VM does work on os-x 10.2.8 forward, however 10.2 does not actually support cursors bigger than 16x16 in case anyone in the world still uses 10.2.8 and tries a OLPC image. The 3.8.17b3 VM is in the experimental directory at. http://www.smalltalkconsulting.com/squeak.html For the curious I'll note the OLPC image is at. http://etoys.laptop.org/src/etoys-image-and-pr.zip 3.8.17b3 Oops no-one check large cursors on powerpc. NSCursorWrappers.m Ensure works on powerpc, also confirm does not work on 10.2.x (not supported) 3.8.17b2 bug fix cursor tracking was not correct, used local coordinates, needed global. Add large cursor support via unix code for OLPC image sqMacUIEventsUniversal.c large cursor support, switch cursors back on window entry and app activation. sqMacHostWindow.c Fix cursor tracking sqMacWIndowUniversal.c small cursor logic has to set flag that it's not large cursor so reset cursor knows which cursor to use NSCursorWrappers.m new NSCursorWrappers.h new -- ======================================================================== === John M. McIntosh <johnmci(a)smalltalkconsulting.com> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ======================================================================== ===

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ESUG 2997 Call for Contributors
by stephane ducasse 27 Apr '07

27 Apr '07

Please note: this call contains several related but different announcements. Please distribute it widely. ********************************************************************** Call for contributions for the 14th International Smalltalk Conference Monday 4th - Friday 8 September 2006 Prague, Czech Republic http://www.esug.org For the past 14 years, the European Smalltalk User Group (ESUG) has organized the International Smalltalk Conference, a lively forum on cutting edge software technologies that attract people from both academia and industry for a whole week. Every year, around half of attendees are engineers using Smalltalk in business while the rest of attendees are students and teachers using Smalltalk for both their research and courses. As every year, this year's edition of the event will include the regular technical program with high quality invited speakers. In addition, we'll have a research track with an excellent program committee, a business day about successful use of Smalltalk in the market place, and a technology award event where prizes will be distributed to authors of best pieces of Smalltalk-related software. THIS YEAR we are looking for YOUR EXPERIENCE Reports using Smalltalk, so please come and tell others about your experience and projects Here is a non exhaustive list of topics we are interested in: - XP practices - Development tools - Experience reports - Model driven development - Web development - Team management - Meta-Modeling - Security - New libraries - New UI frameworks - Educational material - Embedded systems ---------------------------------- ESUG Developers Conference -http://www.esug.org/conferences/ 14thinternationalsmalltalkconference2006/developersconference/ -Submissions due on 30th of May 2006 -Notification of acceptance on 15 of June 2006 How to apply? Pay attention the places are limited and do not wait the last minute to apply. Prospective presenters should submit a request to esug-info(a)esug.org following the template below. Pay attention to follow the template since the email will be automatically treated! Subject: [ESUG 2006 Presentations] + your name First Name: Last Name: Email where you can always be reached: Title: Abstract: Bio: Any presentation not respecting this form will be discarded automatically ---------------------------------- ESUG Research Conference -http://www.esug.org/conferences/ 14thinternationalsmalltalkconference2006/researchconference/ - Paper of 25 pages max - Submissions Deadline: Sunday 28th May, 0hrs CET - Notification of acceptance: 15 of July 2006 - Final version: 1st of August ---------------------------------- Innovation Technology Awards -http://www.esug.org/conferences/ 14thinternationalsmalltalkconference2006/innovationtechnologyawards/ - 3 pages max describing the software + URL to download the software - Submissions due on 30th of june 2006 - Notifications of elegibility on 15th of july 2006 ---------------------------------- Are you a student, and do you want to attend ESUG (the premier European Conference on Smalltalk)? This year, ESUG again has a student volunteer program you can apply for. Your duties will be few, and you will have to help the local organizers. ESUG does not pay travel costs, but the conference will be free. Depending on the number of students the hosting will possibly also be free. http://www.esug.org/conferences/ 14thinternationalsmalltalkconference2006/ esug2006studentvolunteersprogram/ Prof. Stéphane DUCASSE [ | ] http://www.iam.unibe.ch/~ducasse/ "if you knew today was your last day on earth, what would you do different? ... especially if, by doing something different, today might not be your last day on earth" Calvin&Hobbes Open Source Smalltalks: http://www.squeak.org, http://www.gnu.org/ software/smalltalk/smalltalk.html Free books for Universities at http://www.esug.org/sponsoring/ promotionProgram.html Online Free Books at http://www.iam.unibe.ch/~ducasse/WebPages/ FreeBooks.html _______________________________________________ Esug mailing list Esug(a)lists.esug.org http://lists.esug.org/listinfo/esug

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Summertalk 2007
by stephane ducasse 27 Apr '07

27 Apr '07

Hi all Please distribute this announce. ESUG is launching SummerTalk 2007 and we are looking for participants. http://www.esug.org/promotionactions/summertalk2007/ Stef

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WarpBlt from 16bpp to 32bpp
by Yoshiki Ohshima 27 Apr '07

27 Apr '07

Hello, I think that this is a known issue, but can't remember when was the last time we discussed this. So, I'm bringing it up in a context I encountered. Here is a sample code to illustate the problem: ------------------- f _ (Form extent: 50@50 depth: 16) fillColor: Color green. g _ Form extent: 100@100 depth: 32. (WarpBlt current toForm: g) sourceForm: f; cellSize: 2; combinationRule: Form over; sourceQuad: (f boundingBox) innerCorners destRect: g boundingBox; warpBits. "g fixAlpha." g colorAt: 50@50 ------------------- First you fill a 16-bit form with green, and then warp blt it onto a 32-bit Form with the "over" rule. You'd expect to get a green-colored form as a result, right? One of the problem is that the alpha channel is set to 0 so it results in "Color transparent". You would imagine to fix it by "g fixAlpha" above. However, if you uncomment the line and execute, you get "(Color r: 0.94 g: 0.0 b: 0.0)" as the result. This is wrong. A part of BitBltSimulation>>warpPickSmoothPixels: nPixels xDeltah: xDeltah yDeltah: yDeltah xDeltav: xDeltav yDeltav: yDeltav sourceMap: sourceMap smoothing: n dstShiftInc: dstShiftInc says: "normalize rgba sums" nPix = 4 "Try to avoid divides for most common n" ifTrue:[r _ r >> 2. g _ g >> 2. b _ b >> 2. a _ a >> 2] ifFalse:[ r _ r // nPix. g _ g // nPix. b _ b // nPix. a _ a // nPix]. rgb _ (a << 24) + (r << 16) + (g << 8) + b. "map the pixel" rgb = 0 ifTrue: [ "only generate zero if pixel is really transparent" (r + g + b + a) > 0 ifTrue: [rgb _ 1]]. rgb _ self mapPixel: rgb flags: cmFlags. With the first assignment, the variable "rgb" holds a 32-bit pixel value. We know the destination is also 32 bit, so we even doesn't have to map the pixel value. However, the invocation of #mapPixel:flags: takes the rgb value as if it is 16-bit and mask and shift again. The right thing is to map the averaged rgb value back to the pixel value in the source depth and then map the color. For a practical need, we can skip mapPixel:flags: if the dest is 32 and there is no color map specified. And, the workaround I use is to use cellSize: 1 for this... But here is another issue, actually. WarpBlt>>cellSize: says: cellSize: s cellSize _ s. cellSize = 1 ifTrue: [^ self]. colorMap _ Color colorMapIfNeededFrom: 32 to: destForm depth. so it trys to install a color map from 32-bit regardless the actuall depth of the source. Why? -- Yoshiki

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Who does use AttributedTextStream?
by Damien Cassou 27 Apr '07

27 Apr '07

Hi, is there any user of AttributedTextStream? What do you use it for? Thank you -- Damien Cassou

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tweak wiki and mailing list
by Jens Lincke 27 Apr '07

27 Apr '07

Hi, where can I find the current tweak wiki and mailing list? I got the following from http://tweakproject.org/: 502 Bad Gateway The proxy server received an invalid response from an upstream server. ------------------------------------------------------------------------ I thought the wiki moved there, where can I find it? - Jens -

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Re: [Newbies] Looking at Squeak
by subbukk 27 Apr '07

27 Apr '07

On Friday 27 April 2007 2:56 pm, Edgar J. De Cleene wrote: > What IS true is what .pr files usually works without problems between same > versions of Squeak. Not being backward compatible is a problem. Active essays shouldnt be bound to its authoring image. Pervasive Technology Labs at Indiana University has some excellent essays written as Squeak projects. But I couldn't get their math model ( http://pervasivetechnologylabs.iu.edu/lab_sda/K-12/math-model-nature.045.pr) project to run in my browser. This project makes use of NCLineMorph and GeeMail which doesnt exist in the SqueakPlugin image and I have no clue which version they used for their project. Regards .. Subbu

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