etoys-dev October 2006

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[Etoys] SqueakMap does not load in OPLC.
by karl 14 Oct '06

14 Oct '06

I get a 'convert to wich modern class' error when I try to open the SqueakMapLoader in the OPLC image. Karl

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[Etoys] Document markup
by Bert Freudenberg 14 Oct '06

14 Oct '06

The OLPC document format ("Crossmark") is being spec'ed out. See http://dev.laptop.org/git.do?p=users/krstic/docformat We need to start thinking about what that means for etoys (after B- test, that is). - Bert - Anfang der weitergeleiteten E-Mail: > Am 14.10.2006 um 13:29 schrieb Ivan Krstić: > >> Bert Freudenberg wrote: >>> Walter Bender <walter(a)media.mit.edu> >>>> >>>> 7. The OLPC document format spec rev2 has support for block macros, >>>> granular tables of contents, and layout hinting. The format is >>>> named >>>> “Crossmark,” and is believed to be highly suitable for >>>> (collaborative) book >>>> writing and editing and use as an e-book format. >> >>> Where could I find that spec, and who is working on it? >> >> I designed the format; rev1 is public, but rev2 hasn't been pushed to >> git yet; it'll be there by the end of the day. > > Found it: > > http://dev.laptop.org/git.do?p=users/krstic/docformat > > Thanks! > > - Bert -

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[Etoys] Font size
by Bert Freudenberg 14 Oct '06

14 Oct '06

Anfang der weitergeleiteten E-Mail: > Von: Walter Bender <walter(a)media.mit.edu> > Datum: 14. Oktober 2006 11:25:11 MESZ > An: community-news(a)laptop.org > Betreff: [Community-news] OLPC News (2006-10-14) > > 4. Display: The new dual-mode panels—with double the reflectance—were > hand-carried back by Mary Lou were installed successfully into the > motherboard-daughter card test-sets at OLPC. With work by Jim > Gettys and > Walter Bender, preliminary optimal font size tests were started. A > 9-point > font (25 pixels) seems ideal for readability as a guideline for > development. Looks like we pretty much came up with the same estimate. We use Accujen18 which is 22 pixels high plus 2 pixels of leading. We might still want to look around for other free large bitmap fonts. In color mode on the actual display, the difference between a bitmap font and an antialiased font is negligible. We want to use bitmap fonts for speed. - Bert -

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[Etoys] File Descriptor release?
by Yoshiki Ohshima 14 Oct '06

14 Oct '06

Hello, Lately I'm moving files back and forth between a Windows PC and an OLPC test board via a USB memory in VFAT. The OLPC test board runs official OLPC kernel (build 94) that is a modified Linux. Here I have a problem to unmount the file system after Squeak opens something on the file system. A typical workflow is: * There are bare minimum stuff running on the board. On X, xterm and twm and that is it. * mount a USB memory on the board: mount -t vfat /dev/sdb1 /mnt * launch Squeak. The binary of VM and image are on a different file system than /dev/sdb1. * open a FileList, and navigate to /mnt. * close the FileList. Do 'purge undo records' (just for the heck of it) and do fullGC couples of times. * go to xterm while Squeak is running and try: umount /mnt I get "device is busy" error. * close Squeak and try unmount again. I can unmount the file system this time. The VM is 3.9-8 that I compiled from the repository. Is this something to do with the Linux VFAT driver, or a problem with the Squeak VM? -- Yoshiki

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[Etoys] Performance improvements form 3.9 (backported) #1
by Marcus Denker 14 Oct '06

14 Oct '06

Hi, attached are some changeset that are in 3.9 which might help a little with perfomance... I have no idea how to properly benchmark this... but starting up the image, run the eToy macrobenchmark. Then I filed in all the changesets and ran the benchmarks again. Result (MacBook pro, Squeak 3.8.12beta5U): Before: #960 memory=20464928 display=1012x700x16 painter=214.8 viewer=186.4 scriptor=139.4 category=232.6 After: #960 memory=22901456 display=1012x700x16 painter=185.4 viewer=173.4 scriptor=132.8 category=214.8 The changesets have been checked and fixed against OLPC-Squeak- latest.zip as downloaded today. More to come later... Marcus

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[Etoys] Caps Lock on OLPC
by Milan Zimmermann 13 Oct '06

13 Oct '06

Hi, Does the OLPC keyboard have a Caps Lock key? If it does, I wonder if it exhibits this problem: http://bugs.impara.de/view.php?id=5107 milan

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[Etoys] Rebecca Allen's example intro to XO made into an Etoy JPEG movie
by Alan Kay 12 Oct '06

12 Oct '06

It would be great to hear how fast this can run on the XO board we have. It easily runs at 20+ frames per second on my Panasonic. Kim/Yoshiki, it would be great if you could tell Becky the frame speed result on the XO board. Cheers, Alan

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[Etoys] Libya agress to HDLT
by Kim Rose 12 Oct '06

12 Oct '06

http://news.bbc.co.uk/2/hi/africa/6040536.stm

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[Etoys] A Progress Report
by Yoshiki Ohshima 12 Oct '06

12 Oct '06

Hello, Too many changesets are flying around and I didn't take time to explain them, but just update your image and you can see what is going on. There are still some mid-size changes are planned, but most of the critical stuff are done. We start more looking at optimizations that won't change the functionality and smaller fixes. I'll update (finally) the "-latest" images on the server for people's convenience. As you may have seen, some people on this list are getting ready to experiment real content making on the system. So, now would be a good time to start making some eToys. Then, please write about bugs, findings new ideas, and also reminder for what you already told us but we forgot^^; These items don't have to be about this "October release", so feel free a bit longer term issues. Thank you so much! -- Yoshiki

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[Etoys] text rendering
by Yoshiki Ohshima 12 Oct '06

12 Oct '06

Alan and everybody, I pushed two change sets that deal with some inefficiency in text rendering. Some are already known issues around the recalculation of some properties and some are a bit or tidying up of code. Most notably, True Type font rendering is much faster now. I still think the use of True Type should be somewhat limited, but for making splash screen or that kind of thing, it should be ok to use it if it doesn't change color of characters in a text (as much), and don't other stuff overlap with text (as much). -- Yoshiki

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etoys-dev October 2006