April 2012 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Unresponsive 1.4 image

by Igor Stasenko

So, this is related to thread-safe transcript code.. which using semaphore to synchronize access to transcript stream. I guess what happens is that a semaphore is blocked in another process, but for some strange reason never released. This leads to situation, that any other process which will attempt to write to transcript will be blocked as well.. forever. 2012/4/21 Janko MivÅ¡ek <janko.mivsek(a)eranova.si>: > Hi guys, > > It seems that writing to Transcript from background process causes my > freeze after restart. And yes, I have Transcript window open. > > This is a code snippet in question: > > AIDASite class>>imageSnapshot > Â ... > Â elapsed := Time millisecondsToRun: > Â Â [SmalltalkImage current saveSession]. > Â Transcript show: ' in ', (elapsed // 1000) printString, 's '. > > > If I comment out the last line, snapshot doesn't block the image after > restart. > > This is not necessary 1.4 specific problem, because I noticed similar > problem in 1.3 also. Just that on 1.3 input freezes immediately while on > 1.4 it freezes after restart. > > Let me investigate a bit further, what if Transcript window is not open? > > Best regards > Janko > > > > Dne 20. 04. 2012 21:42, piÅ¡e StÃ©phane Ducasse: >> Ok may be nautilus bug. It should be different than janko problem. >> >> Stef >> >> On Apr 20, 2012, at 9:39 PM, Sean P. DeNigris wrote: >> >>> >>> StÃ©phane Ducasse wrote >>>> >>>> on which os? >>>> >>> >>> Mac Lion 10.7.3 >>> >>> -- >>> View this message in context: http://forum.world.st/Unresponsive-1-4-image-tp4574693p4575049.html >>> Sent from the Pharo Smalltalk mailing list archive at Nabble.com. >>> >> >> >> > > -- > Janko MivÅ¡ek > Aida/Web > Smalltalk Web Application Server > http://www.aidaweb.si > -- Best regards, Igor Stasenko.

April 21, 2012

Re: [Pharo-project] strange logic

by Igor Stasenko

Nice! :) On 21 April 2012 09:56, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > 2840 in mine for 4 icons > O_o > > And of course doing a lot of bad string comparisonsâ¦.. > > Stef > > > On Apr 21, 2012, at 12:05 AM, Alain Rastoul wrote: > >> Bringing up the World menu ends up with more than 1000 'icon' messages in >> the Transcript >> 8-o >> >> >> "StÃ©phane Ducasse" <stephane.ducasse(a)inria.fr> a Ã©crit >> dans le message de news: BAF0C354-2FD4-4AD0-B24E-EABE17ADE36D(a)inria.fr... >> Hi >> >> I added a simple transcript into the following method. >> >> icon >> "Answer the receiver's icon. Handle legacy case >> of wording-based mechanism." >> >> |state| >> Transcript show: 'icon'; cr. >> ^^^^^^^^^^^^^^^^^^^^^^ >> self getStateSelector ifNil: [^super icon]. >> state := (MessageSend receiver: self target selector: self getStateSelector) >> valueWithEnoughArguments: self arguments . >> (state = true or: [state isString and: [(state beginsWith: '<yes>') or: >> [state beginsWith: '<on>']]]) >> ifTrue: [^self onIcon]. >> (state = false or: [state isString and: [(state beginsWith: '<no>') or: >> [state beginsWith: '<off>']]]) >> ifTrue: [^self offIcon]. >> ^super icon >> >> Then I brought up the monticello menu which has 4 toggleMenus and Â I got a >> lot and a lot and a lot >> of processing in the transcript >> >> It looks to me that there is a wrong logic in the system >> Stef >> >> >> >> > > -- Best regards, Igor Stasenko.

April 21, 2012

Re: [Pharo-project] One-click Windows comment

by Igor Stasenko

On 21 April 2012 10:48, phil(a)highoctane.be <phil(a)highoctane.be> wrote: > Inno Setup would be a good thing to use for creating a Windows installer. > > http://www.jrsoftware.org/isinfo.php > > I use it regularly. Interested in a sample? > Since we're using automated builds, it is important that install packaging tools can run from command line and don't require any user interaction(s) in order to create an output. is inno installer allows to do that? > Phil > > > 2012/4/21 Marcus Denker <marcus.denker(a)inria.fr> >> >> >> On Apr 20, 2012, at 11:49 AM, Herby VojÄÃk wrote: >> >> > The ideal way would probably that .bat (or .cmd or .vbs) creates the >> > .lnk by some ActiveX magic, runs it and quits; subseuqntly .lnk could be >> > clicked directly. >> > >> We are planning of having installers for the three platforms... so we can >> make them more in the style that people expect. >> >> But this will be done step by step and slowly (like everything :-) >> >> For the meantime, I added a catch-all tracker for ideas how to improve the >> one-click: >> >> Â Â Â Â http://code.google.com/p/pharo/issues/detail?id=5643 >> >> >> -- >> Marcus Denker -- http://marcusdenker.de >> >> > > > > -- > Philippe Back > "Helping you hit the top 3 outcomes you really want to achieve" > > Mob: +32(0) 478 650 140 | Fax: +32 (0) 70 408 027 Mail: phil(a)highoctane.be | > Web: http://philippeback.eu | Blog: > http://philippeback.be > > High Octane SPRL > rue cour Boisacq 101 > 1301 Bierges > -- Best regards, Igor Stasenko.

April 21, 2012

Re: [Pharo-project] Nautilus

by Helene Bilbo

Mariano Martinez Peck wrote > > Anyway, I agree we should document Nautilus somewhere :( > I stumbled upon a sketch of a Nautilus documentation some time ago :) https://github.com/Ezial/Nautilus Please continue to write it and publish it! And i really begin to like Nautilus a lot, especially the possibility to write plugins. What i would love to learn/read more about was RPackage and Ring (perhaps on a blogpost on http://marianopeck.wordpress.com/ ;). -- View this message in context: http://forum.world.st/Nautilus-tp4575388p4576187.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

April 21, 2012

Re: [Pharo-project] The video about Athens

by Igor Stasenko

On 20 April 2012 22:09, Tudor Girba <tudor(a)tudorgirba.com> wrote: > Hi, > > Ok, I am trying to install Cairo on Mac Lion, but it proves to be a bit too difficult. > > I do "sudo port install cairo +universal" and I get the output as listed below. Any ideas? Is there no simple way to just get the pre-built library from somewhere? you running into similar problems that me.. since cairo having multiple dependencies, and uses other well common libs, they were already existed on my mac, before i tried to install cairo. So i had to rebuild them with +universal flag, because they were built only for 64 bits. btw, this is another answer to your question, about why i cannot just bundle prebuilt cairo library with VM and free you from dubious tasks of building it. because it depends on like 5 or 6 another libraries. So, bundling cairo library will mean bundling it together with all those libs.. So, maintaining such huge amount is not fun, especially taking into account that there are official maintainers for those libraries already, and they know how to deal with problems if one arises (like migrating from one OS version to another or updating them). > > ------------OUTPUT-------------- > > ---> Â Computing dependencies for cairo > ---> Â Dependencies to be installed: expat fontconfig freetype bzip2 zlib libiconv gperf pkgconfig glib2 gettext ncurses libffi perl5 perl5.12 gdbm xz libpixman libpng xorg-xcb-util xorg-libxcb python27 db46 libedit openssl python_select sqlite3 xorg-libXau xorg-xproto xorg-libXdmcp xorg-libpthread-stubs xorg-xcb-proto libxml2 xrender xorg-libX11 xorg-bigreqsproto xorg-inputproto xorg-kbproto xorg-xcmiscproto xorg-xextproto xorg-xf86bigfontproto xorg-xtrans xorg-renderproto > ---> Â Activating expat @2.1.0_0+universal > Error: Target org.macports.activate returned: Image error: /opt/local/bin/xmlwf already exists and does not belong to a registered port. Â Unable to activate port expat. Use 'port -f activate expat' to force the activation. > Error: Failed to install expat > Log for expat is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_textproc_expat/expat/main.log > Error: The following dependencies were not installed: expat fontconfig freetype bzip2 zlib libiconv gperf pkgconfig glib2 gettext ncurses libffi perl5 perl5.12 gdbm xz libpixman libpng xorg-xcb-util xorg-libxcb python27 db46 libedit openssl python_select sqlite3 xorg-libXau xorg-xproto xorg-libXdmcp xorg-libpthread-stubs xorg-xcb-proto libxml2 xrender xorg-libX11 xorg-bigreqsproto xorg-inputproto xorg-kbproto xorg-xcmiscproto xorg-xextproto xorg-xf86bigfontproto xorg-xtrans xorg-renderproto > Error: Status 1 encountered during processing. > To report a bug, see <http://guide.macports.org/#project.tickets> > > > > > Cheers, > Doru > > > On 20 Apr 2012, at 02:48, Fernando Olivero wrote: > >> Hi Tudor, >> >> I'm forwarding the notes and email i've sent when i successfully compiled Cairo. >> (You can check previous mails on this matter also) >> >> Hope it helps! >> >> >> --------------------------------------------------------------------------------------------------------------------------------- >> >> Regarding the build, after a lonnnngg series of errors, i also managed >> to build universal binaries of Cairo, using MacPorts (brew just >> doesn't ease the task of creating 32 bit libraries). >> sudo port cairo +universal, worked for me, taking at least 30 min to build. >> >> ATTENTION: Before entering the port cairo install command, I've had to >> manually install appleGcc4.2, found @ [1] (file name >> gcc-42-5666.3-darwin11.pkg. Given that i have Lion, XCode4.2, and if >> you just allow macports to build appleGcc4.2, it will run a process >> that consumes resources and finally stalls your computer! >> >> I've attached a screen shot that may help somebody else, for setting >> up the examples. Using NativeBoost Cog VM for Mac, downloadable from >> NativeBoost site or Jenkins. >> ..... >> >> Fernando >> [1] http://r.research.att.com/tools/ >> >> >> sudo port install cairo +universal >> >> file /opt/local/lib/libcairo.2.dylib >> /opt/local/lib/libcairo.2.dylib: Mach-O universal binary with 2 architectures >> /opt/local/lib/libcairo.2.dylib (for architecture i386): Â Â Â Â Mach-O >> dynamically linked shared library i386 >> /opt/local/lib/libcairo.2.dylib (for architecture x86_64): Â Â Â Mach-O >> 64-bit dynamically linked shared library x86_64 >> >> >> >> >> On Fri, Apr 20, 2012 at 12:47 AM, Francisco Garau >> <francisco.garau(a)gmail.com> wrote: >>> On 19 April 2012 23:06, Alexis Parseghian <a.parseg(a)gmail.com<mailto:a.parseg@gmail.com>> wrote: >>> On Thu, Apr 19, 2012 at 6:16 PM, Igor Stasenko <siguctua(a)gmail.com<mailto:siguctua@gmail.com>> wrote: >>>> strange.. that video , if streamed from flash.. seems to be without >>>> sound track :( >>>> >>>> but if you click on "download this video" link, then everything is ok.. >>> >>> No such luck here ; no sound whatsoever, in any version, downloaded or streamed. >>> >>> >>> Same for me... no sound :-( >> > > -- > www.tudorgirba.com > > "No matter how many recipes we know, we still value a chef." > > > > > > > -- Best regards, Igor Stasenko.

April 21, 2012

Re: [Pharo-project] Unresponsive 1.4 image

by Janko MivÅ¡ek

Hi guys, It seems that writing to Transcript from background process causes my freeze after restart. And yes, I have Transcript window open. This is a code snippet in question: AIDASite class>>imageSnapshot ... elapsed := Time millisecondsToRun: [SmalltalkImage current saveSession]. Transcript show: ' in ', (elapsed // 1000) printString, 's '. If I comment out the last line, snapshot doesn't block the image after restart. This is not necessary 1.4 specific problem, because I noticed similar problem in 1.3 also. Just that on 1.3 input freezes immediately while on 1.4 it freezes after restart. Let me investigate a bit further, what if Transcript window is not open? Best regards Janko Dne 20. 04. 2012 21:42, piÅ¡e StÃ©phane Ducasse: > Ok may be nautilus bug. It should be different than janko problem. > > Stef > > On Apr 20, 2012, at 9:39 PM, Sean P. DeNigris wrote: > >> >> StÃ©phane Ducasse wrote >>> >>> on which os? >>> >> >> Mac Lion 10.7.3 >> >> -- >> View this message in context: http://forum.world.st/Unresponsive-1-4-image-tp4574693p4575049.html >> Sent from the Pharo Smalltalk mailing list archive at Nabble.com. >> > > > -- Janko MivÅ¡ek Aida/Web Smalltalk Web Application Server http://www.aidaweb.si

April 21, 2012

Re: [Pharo-project] The video about Athens

by Igor Stasenko

On 21 April 2012 03:03, Bernardo Ezequiel Contreras <vonbecmann(a)gmail.com> wrote: > Â Finally, i couldÂ heardÂ it. Download original file (MOV) and use Windows/VLC > but the video has two audio(stereo) tracks so you have to select the one > with the sound, the other one is in silence. > ah, yes.. that might be the problem. i recorded with defaults on, which records mic input and audio input. but since there is no any audio during record , only my voice on mic, it is silent and useless. i will try to recode the video next week with help of Marcus. > > On Fri, Apr 20, 2012 at 7:57 PM, Mark Smith <mark.smith(a)objectbynature.com> > wrote: >> >> +1 for the descriptive names. >> >> Too often I see strange contractions that aren't immediately obvious, and >> or otherwise inconsistent naming (not just in Smalltalk), and it ruins the >> illusion of having a consistent whole :). >> >> It bugs me a little ;). >> >> It would be really cool if we could agree as a community to follow a >> well-defined naming scheme. >> >> I'm rather fond of this book â >> >> Smalltalk With Style >> >> Any thoughts? >> >> Mark >> >> >> On 20 Apr 2012, at 08:47, Igor Stasenko wrote: >> >> On 19 April 2012 18:27, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: >> >> It's so great stuff!!! :)) >> >> >> Is cairo used as athens backend for this demo? >> >> Is it should work with Bitblt backend? >> >> >> In demo I see many usage of angel parameter for transformations. Do you >> >> think about "angel unit objects" like "90 degrees" or "2 radians" instead >> of >> >> raw numbers ? >> >> >> there are two methods - Â rotateByRadians: and rotateByDegrees: >> It makes things more explicit, while if i just have >> rotate: or rotateBy:, then it will be a bit ambiguous, whether >> argument angle is in radians or degrees >> (different frameworks assuming Â different things to be default) >> >> How #scaledBy: works with Point argument (self extend) and Float like >> (frame >> >> / 100 sin abs) at the same time? What' logic? >> >> >> for uniform scale, you provide a sole number, and for non-uniform - a >> point, >> with x and y scale factors separately. >> There is a scaleX:Y: method, while scaleBy: is more for convenience. >> >> Best regards, >> >> Denis >> >> >> >> 2012/4/19 Igor Stasenko <siguctua(a)gmail.com> >> >> >> Hello, all >> >> >> I recorded a small introductory video about Athens. >> >> Here it is: >> >> >> http://vimeo.com/40653315 >> >> >> (about 21 minutes). >> >> >> I explain some basic stuff like drawing things using Athens canvas, >> >> building paths, use of transformation matrices etc. >> >> >> Please note, this is a first video i ever recorded in such context in >> >> my life, so don't be too harsh :) >> >> Also, note that the animations are jagged because of video recording >> >> frame rate, not because it is that slow in reality. >> >> >> There are still a blog post pending about it.. which i plan to finish >> >> when i will finish ;) >> >> >> -- >> >> Best regards, >> >> Igor Stasenko. >> >> >> >> >> >> >> -- >> Best regards, >> Igor Stasenko. >> >> > -- Best regards, Igor Stasenko.

April 21, 2012

Re: [Pharo-project] [ANN] Physical Etoys 2.0 released!

by Ben Coman

Ricardo Moran wrote: > Hi everybody (and sorry if you receive multiple copies), > > I would like to announce a new version of Physical Etoys, now with a lot of > new features: > > 1. First of all, it's based on Etoys 5.0 so it incorporates all the > bug-fixes and new features from the Etoys release. > 2. We are now focusing on the two main hardware platforms: Arduino and > Lego Mindstorms Nxt. For the rest, we will publish a set of "external > modules" that you can install in your Physical Etoys version. > 3. Also, we now support an argentinian version of Arduino, which is > called DuinoBot and it's currently being used in a lot of argentinian > schools. > 4. We added new devices for arduino and now we also support the use of > digital devices attached to analog pins. > 5. We added two new objects that let you graph the input of a variable > across time and save it to a csv file. > 6. We added a new programming mode that lets you compile your scripts > and have them running inside the robot, in contrast to running them in the > computer and communicate with the robot via bluetooth or usb. We believe > this opens a lot of new posibilities for the Physical Etoys users. > 7. And finally, we fixed a lot of bugs that make the software a lot more > stable (or so we hope :). > > I would like to use this opportunity to publicly thank all the people from > the Etoys community for their work on Etoys 5, this latest version is much > better than the last and I encourage you all to try it. > And also, I would like to announce that Physical Etoys 2.0 is going to be > installed by default on all the laptops of the "Conectar igualdad" program, > which is kind of like the argentinian version of OLPC (but for older > students). So we are *really* excited about this! > > Now that you're all as excited as we are :) you can download and try > Physical Etoys 2.0 from our blog: > http://tecnodacta.com.ar/gira/projects/physical-etoys/. > > Cheers, > Richo > > Interfacing with Arduino is very cool. It is high on my list of things to play with (as time permits) Now in case you ever need anything more industrial/powerful (but more costly) here are a couple of things I have been kept a wishful eye on for a couple of years (but I have not yet had time to play with). I share this on the random chance someone gets interested in it before I get a chance to play - hopefully early next year. http://www.embeddedarm.com/products/board-detail.php?product=TS-7350 200MHz ARM9 CPU; 32MB SDRAM (64-128MB opt) 8MB RAM Framebuffer; able to drive TFT-LCDs via custom FPGA 5K LUT FPGA <---------------- Boots Linux 2.6 in about 1 second <---------------- 1 10/100 ethernet port, 2 USB 2.0 (12Mbit/s max), 1 SD Card slot $129 http://www.embeddedarm.com/products/board-detail.php?product=TS-7550 250MHz ARM9 CPU; 64MB DDR-RAM; 256MB SLC XNAND Drive Customizable 5K LUT OpenCore FPGA <---------------- 1 10/100 Ethernet, 33 DIO, SPI and I2C interfaces, 8 TTL UART, 1 CAN bus $89 http://www.embeddedarm.com/about/resource.php?item=628 http://www.embeddedarm.com/documentation/articles/reliability.pdf http://www.embeddedarm.com/products/pc104-peripherals.php cheers -ben

April 21, 2012

Re: [Pharo-project] Can I get a "image save" notification?

by Mariano Martinez Peck

On Sat, Apr 21, 2012 at 10:47 AM, HwaJong Oh <daliot.oh(a)gmail.com> wrote: > My program wants to detect image save event. I couldn't find one, so > changed > SmalltalkImage>>logChanged: or SmalltalkImage>>addSnapshot:andQuit: to > detect the image save and fire my custom notification. > > That makes sense. > Is there a good for doing this like SystemChangeNotification or > SystemAnnouncement? > > The good solution I guess it would be SystemAnnouncement. Anyway, if you want a dirty solution without changing the system, you can have your custom class that adds itself to Smalltalk shutDownList and then it implements #shutDown: this will be called also when saving the image. See senders of #processShutDownList: Cheers HwaJong > > > -- > View this message in context: > http://forum.world.st/Can-I-get-a-image-save-notification-tp4576118p4576118… > Sent from the Pharo Smalltalk mailing list archive at Nabble.com. > > -- Mariano http://marianopeck.wordpress.com

April 21, 2012

Re: [Pharo-project] One-click Windows comment

by phil＠highoctane.be

Inno Setup would be a good thing to use for creating a Windows installer. http://www.jrsoftware.org/isinfo.php I use it regularly. Interested in a sample? Phil 2012/4/21 Marcus Denker <marcus.denker(a)inria.fr> > > On Apr 20, 2012, at 11:49 AM, Herby VojÄÃk wrote: > > > The ideal way would probably that .bat (or .cmd or .vbs) creates the > .lnk by some ActiveX magic, runs it and quits; subseuqntly .lnk could be > clicked directly. > > > We are planning of having installers for the three platforms... so we can > make them more in the style that people expect. > > But this will be done step by step and slowly (like everything :-) > > For the meantime, I added a catch-all tracker for ideas how to improve the > one-click: > > http://code.google.com/p/pharo/issues/detail?id=5643 > > > -- > Marcus Denker -- http://marcusdenker.de > > > -- Philippe Back "Helping you hit the top 3 outcomes you really want to achieve" Mob: +32(0) 478 650 140 | Fax: +32 (0) 70 408 027 Mail: phil(a)highoctane.be| Web: http://philippeback.eu | Blog: http://philippeback.be High Octane SPRL rue cour Boisacq 101 1301 Bierges

April 21, 2012