September 2008 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] about morphic analysis done at ESUG

by Marcus Denker

On 05.09.2008, at 09:11, StÃ©phane Ducasse wrote: > Marcus do you have a smalll notes we took when we perform the > morphic analysis > so that we can turn into instance variables some of the ugly valuesAt: > Morph>>fillStyle is called on every mouse-move event. these are called either on mouse-move or repaint: hasDropShadow shadowOffset hasRolloverBorder shadowColor MorphExtension>>layoutFrame layoutPolicy I'm sure there are more... Morphic spends >30% of it's time in property/dictionary code. > Then do you think that we should turn the Dictionary in extension > into "RBFastDictionary"? I tried that once, would be interesting to experiment with that again. RBSmallDictionary, it's part of the AST package: RBSmallDictionary is a special dictionary optimized for small collections. In addition to the normal dictionary protocol, it also supports an #empty message which "empties" the collection but may hang on to the original elements (so it could collect garbage). Without #empty we would either need to create a new dictionary or explicitly remove everything from the dictionary. Both of these take more time and #empty. Or implement the properties in MorphExtension directly with an array. Ned Konz did that in the past and claimed a 20% speedup... > > If yes can you point me to that class? and better open an issue? > To really fix this will be some work. Some properties should be instance variables, and the property code needs to be checked if it can be improved for performance. With the amount of properties used in morphic, one wonders why they never put that into the language as a first class (and fast) concept? Marcus -- Marcus Denker -- denker(a)iam.unibe.ch http://www.iam.unibe.ch/~denker

Sept. 5, 2008

[Pharo-project] About UI enhancements

by StÃ©phane Ducasse

Questions ======== - Why the UITheme is responsible to open widgets. Why this is not the UIManager subclass because now a lot of the interface has to be duplicated in UITheme. Answer because the theme is a variation which requires more subtle controls. Now I have the impression that it means that the UIManager is not well done then. - Why in the following method basicNew is used and not new (which would call initialize anyway)? chooseDirectoryIn: aThemedMorph title: title path: path "Answer the result of a file dialog with the given title, choosing directories only." |fd| fd := FileDialogWindow basicNew initialize; title: title; answerDirectory. path ifNotNil: [fd selectPathName: path]. ^(aThemedMorph openModal: fd) answer To support better integration: ======================= We could merge UIManager subclasses MorphicUIManager and PSUIManager PSPluggableListSpec should be merged into PluggableListSpec I tried to understand the difference between standardWindow and pluggableWindow to see if it would make sense to merge them. I started to check all the extensions and yes there are some work but ideally removing the override would be good. Stef

Sept. 5, 2008

[Pharo-project] about morphic analysis done at ESUG

by StÃ©phane Ducasse

Marcus do you have a smalll notes we took when we perform the morphic analysis so that we can turn into instance variables some of the ugly valuesAt: Then do you think that we should turn the Dictionary in extension into "RBFastDictionary"? If yes can you point me to that class? and better open an issue? Stef

Sept. 5, 2008

[Pharo-project] How to contribute

by StÃ©phane Ducasse

Hi all if you want to help pharo, it would be good to: - go over some of the messages I sent to the mailinglist and turn some of the points as issue - from memory I see the extensions of keith of kernel - the fixes of nicolas - fixing Author initials to get real name instead + a license - enhance DrDoc. - Run SmallLint on some packages. - take some issues and fix them. - helping for the integration server. This afternoon I will empty the inbox. Marcus how can we help for the NewCompiler? Do you have a roadmap? Stef

Sept. 5, 2008

[Pharo-project] Arguments to simply remove ComponentLikeModel

by StÃ©phane Ducasse

ComponentLikeModel seems quite out of sync Left over from the fabrik experiment. After a good code reading I think that we can remove this class. duplicate:from: -> no sender addPinFromSpec: PinMorph was removed previously so let us remove it. :) choosePartName is duplicated choosePartName is only invoked by some menus It seems that the internalName of the debugMenu of the debug halo is somehow change the instance variable name of the selected object. There is no implementors of copySlotMethodsFrom: so : delete init* methods are about pin nameMeIn: is only invoked from init* method I imagine that you are convinced that removing this class is good. Stef

Sept. 4, 2008

[Pharo-project] Crashing the image with polymorph in one line :)

by StÃ©phane Ducasse

Hi gary I wanted to remove the class ComponentLikeMorph from the system. So I redefined ScrollPane to be a subclass of the superclass of ComponentLikeMorph MorphicModel subclass: #ScrollPane instanceVariableNames: 'scrollBar scroller retractableScrollBar scrollBarOnLeft getMenuSelector getMenuTitleSelector scrollBarHidden hasFocus hScrollBar' classVariableNames: '' poolDictionaries: '' category: 'Morphic-Windows' it works in pharo 64 but it crashes systematically the vm when polymorph is loaded. Stef

Sept. 4, 2008

Re: [Pharo-project] Question about Pharo and Multimedia

by John M McIntosh

For the curious, somewhere along the way the Sophie team decided to go with Quicktime as the primary media source because Apple bundles it with iTunes, and given the iPod/iPhone monopoly why finding Quicktime on a Windows machine now is fully expected. However you must choose your codec carefully some videos formats we would find would be there on Windows, but not there on Macintosh. Also if you use OGG that is not a default Quicktime codec, for that reason we bundled the OGG squeak players with Sophie so that we could fall back to them (part of the Sophie Movie logic) if OGG Quicktime was not installed. On Sep 4, 2008, at 10:50 AM, Michael Rueger wrote: > StÃ©phane Ducasse wrote: >> Normally you should be able to load into pharo 3.9 or 3.8 code. >> Now since nobody cared for a long time on Movies I do not know the >> status >> of such a code. > > The "native" Squeak movie code is very outdated and supports only a > very peculiar mpg.1 video format. So for the future GStreamer and > Quicktime support would be more advantageous. Quicktime is well > integrated into Sophie, but could use some refactoring to bring it > into line with the GStreamer work John did. > > Michael > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project -- = = = ======================================================================== John M. McIntosh <johnmci(a)smalltalkconsulting.com> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com = = = ========================================================================

Sept. 4, 2008

Re: [Pharo-project] Question about Pharo and Multimedia

by GermÃ¡n Arduino

HI StÃ©phane, Michael: 2008/9/4 Michael Rueger <m.rueger(a)acm.org>: > StÃ©phane Ducasse wrote: >> >> Normally you should be able to load into pharo 3.9 or 3.8 code. Not tried with Pharo images (yet). >> Now since nobody cared for a long time on Movies I do not know the status >> of such a code. The movies stuff is natively on Squeak 3.8, and are the 3.8 images that I'm yet using on my production customers (In web but also in desktop things). But the try of generate packages from these categories and install on 3.10 failed, as a lot of other tries. May be my own fault, but ..... not sure, weird errors on 3.10.2. > > The "native" Squeak movie code is very outdated and supports only a very > peculiar mpg.1 video format. Good to know, is a big reason to try GStreamer then. So for the future GStreamer and Quicktime > support would be more advantageous. Quicktime is well integrated into > Sophie, but could use some refactoring to bring it into line with the > GStreamer work John did. > > Michael > GermÃ¡n.

Sept. 4, 2008

Re: [Pharo-project] Question about Pharo and Multimedia

by GermÃ¡n Arduino

Thanks by the advice, I not played yet with GStreamer and I'm under a bit of time pressure. Do you think that I can use easily to play videos and integrate on other framework (as FMA by example)? Cheers. GermÃ¡n. 2008/9/4 John M McIntosh <johnmci(a)smalltalkconsulting.com>: > It would be more advantageous to concentrate on the GStreamer interface as a > way of providing multi-media applications. > > On Sep 3, 2008, at 10:55 PM, GermÃ¡n Arduino wrote: > >> Hi Guys: >> >> Sorry if I'm asking something obvious or already asked, but, until >> now, I used only Squeak. >> >> Some time ago I asked in Squeak list about "Movies" categories I need >> to develop a multimedia app, without responses, neither on ReleaseTeam >> list. >> >> Some (bad) responses on IRC, commenting that, as they not found >> "maintainers", they are leaving behind such things. >> >> Pharo will include multimedia stuffs or is oriented only to web apps? >> >> Thanks in advance by the comments. >> >> Cheers. >> >> -- >> GermÃ¡n S. Arduino >> http://www.arsol.biz >> http://www.arsol.net >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > -- > =========================================================================== > John M. McIntosh <johnmci(a)smalltalkconsulting.com> > Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com > =========================================================================== > > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

Sept. 4, 2008

Re: [Pharo-project] Question about Pharo and Multimedia

by GermÃ¡n Arduino

Hi Serge: 2008/9/4 Serge Stinckwich <serge.stinckwich(a)doesnotunderstand.org>: > 2008/9/3 GermÃ¡n Arduino <garduino(a)gmail.com>: >> Hi Guys: > > Hi GermÃ¡n, > >> Sorry if I'm asking something obvious or already asked, but, until >> now, I used only Squeak. >> >> Some time ago I asked in Squeak list about "Movies" categories I need >> to develop a multimedia app, without responses, neither on ReleaseTeam >> list. >> >> Some (bad) responses on IRC, commenting that, as they not found >> "maintainers", they are leaving behind such things. >> >> Pharo will include multimedia stuffs or is oriented only to web apps? > > What are multimedia stuffs ? EToys ? mpeg support ? > Yes, exactly, in first term I was talking about movies support, but all the multimedia capabilities are importants, I think. > Pharo is not oriented to web apps. The idea is to have a > well-engineered Smalltalk that could serve as a basis > for a lot of differents applications. > Very very good news to me! > -- > Serge Stinckwich > Smalltalkers do: [:it | All with: Class, (And love: it)] > http://blog.doesnotunderstand.org/ > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > Thanks by the response. Cheers. -- GermÃ¡n S. Arduino http://www.arsol.biz http://www.arsol.net

Sept. 4, 2008