March 2015 - Pharo-dev - lists.pharo.org

Dead link to the bluebook
by kilon alios March 7, 2015

March 7, 2015

This link is dead http://stephane.ducasse.free.fr/FreeBooks/BlueBook/

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PharoLauncher and update 40538-405340
by Torsten Bergmann March 7, 2015

March 7, 2015

In PharoLauncher I'm only able to download up to image version #40537 now - but we are already at 405340. Is this because file.pharo.org is now mirrored or is something wrong in the build pipe? Thx T.

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[ANN AthensSketch] A playground for drawings with Athens.
by Nicolai Hess March 7, 2015

March 7, 2015

The main purpose of this packages is to ease the creation of simple drawings and provide a rich set of examples for Athens drawing API. -------------- Gofer new smalltalkhubUser: 'NicolaiHess' project: 'AthensSketch'; configuration; load. ConfigurationOfAthensSketch loadDevelopment. AthensSketchBrowser open. ----------------- This is a simple playground for Athens drawings. Just subclass AthensSketch and define your own sketch drawing in the #drawStepOn: method. It provides basic frame based animation (play/pause/stop). Open a player with ASketchExampleColors openPlayer', or a simple viewer morph with ASketchExampleColors openView (start and stop rendering from the morph menu) The AthensSketchBrowser lists all defined AthensSketch subclasses. (Basic examples from package AthensSketch and some more examples from package ASketchExamples). You can step through the list of examples, start and stop the drawing, or view and edit the drawing code. It is great that we have now a vector based drawing API. The (old) Canvas API is already great for pixel based drawings. A rich API and many good things if you discover it. And Athens is a addition that can increase our possibilities. There were some questions about Athens, what it is and what it is used for, maybe this helps. nicolai

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[pharo-project/pharo-core]
by GitHub March 7, 2015

March 7, 2015

Branch: refs/tags/40540 Home: https://github.com/pharo-project/pharo-core

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[pharo-project/pharo-core] cd1f15: 40540
by GitHub March 7, 2015

March 7, 2015

Branch: refs/heads/4.0 Home: https://github.com/pharo-project/pharo-core Commit: cd1f15d0708b6758fa44f16ef67096540414f68e https://github.com/pharo-project/pharo-core/commit/cd1f15d0708b6758fa44f16e… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2015-03-07 (Sat, 07 Mar 2015) Changed paths: M Manifest-CriticBrowser.package/SingleCodeCriticResultList.class/instance/initialization/setTextModelForClassOrMethod_.st R ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script539.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - scripts/script540.st R ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40539.st A ScriptLoader40.package/ScriptLoader.class/instance/pharo - updates/update40540.st M ScriptLoader40.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st M Slot.package/HiddenInstanceVariableSlot.class/README.md M Slot.package/PropertyBaseSlot.class/instance/initalize/initialize.st M Slot.package/Slot.class/README.md M Spec-Examples.package/ProtocolViewer.class/README.md M Spec-Examples.package/ProtocolViewer.class/instance/initialization/initializePresenter.st M Spec-Examples.package/ProtocolViewer.class/instance/initialization/initializeWidgets.st Log Message: ----------- 40540 15082 Some typos in comments of Slots https://pharo.fogbugz.com/f/cases/15082 15011 update spec example ProtocolViewer https://pharo.fogbugz.com/f/cases/15011 15077 CriticBrowser MNU Trait>>methodClass https://pharo.fogbugz.com/f/cases/15077 http://files.pharo.org/image/40/40540.zip

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About Spec menu:
by stepharo March 7, 2015

March 7, 2015

Hi I would like to get your point of view about this code ListModel>>menu: aBlock "<api: #block getter: #menu registration: #whenMenuChanged:>" "Set the block used to defined the menu" menuHolder value: aBlock I have problem to see a case where the end programmer would like to get notify when the menu is changed. I'm thinking that I will remove the valueHolder holder blocks that create menu. Stef

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Athens: Slow image paint (was: [ANN AthensSketch] A playground for drawings with Athens.
by Nicolai Hess March 6, 2015

March 6, 2015

2015-03-07 0:02 GMT+01:00 Nicolai Hess <nicolaihess(a)web.de>: > > One thing that is really slow is painting an image with Athens, because > the cairo backend creates a new surface for this image and uses this > image as a pattern paint. The slow part is copying and converting the > image data into the surface. > I already proposed an alternative, (it's a bit like cheating), we can use > the bitblt to copy and convert the image data into the surface, this again > is much faster. > > For example this code with AthensSceneView (this is not optimized, because I can create the AthensPaint outside of the render block or cache the paint like it is done in ImageMorph>>drawOnAthensCanvas:, but consider the paint has to be created in the render loop) | view form angle | view := AthensSceneView new. form := (ZnEasy getJpeg:' http://upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Kheops-Pyramid.jpg…' ). angle := 0. view scene: [:canvas | canvas surface clear: Color black. canvas pathTransform translateBy: form extent /2.0. canvas pathTransform rotateByDegrees: angle. canvas pathTransform translateBy: form extent /2.0 negated. canvas setPaint: form. canvas drawShape: (0@0 corner:320@197). angle := angle+10. ]. view openInWindow. The rotation is quite slow. Now change the implementation of AthensCairoSurface class>>#fromForm: fromForm: aForm | form surface | form := aForm unhibernate; asFormOfDepth: 32. surface := self extent: aForm extent. (BitBlt destForm: surface asForm sourceForm: aForm fillColor: nil combinationRule: 24 destOrigin: 0 @ 0 sourceOrigin: 0 @ 0 extent: aForm extent clipRect: (0 @ 0 extent: aForm extent)) copyBits. surface markDirty. ^ surface This is a bit like cheating, the original code computes a new form with premultiplied alpha and copies the data into the surface. This one uses BitBlt to copy the data, but AFAIK this paint combination rule (24) does not create a premultiplied alpha form. But this one is much faster.

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New Cog VMs available
by Eliot Miranda March 6, 2015

March 6, 2015

Hi All, recent instability seems to have been cured. Please find new VMs at http://www.mirandabanda.org/files/Cog/VM/VM.r3266. For Squeakers, these are close to release candidates for the upcoming 5.0 release. I have one last modification to do with free space handling on start-up in Spur (the current VMs over-allocate free space), and maybe a minor speed-up of the LargeIntegersPlugin; other than that I intend bug fixes only. CogVM binaries as per VMMaker.oscog-eem.1085/r3266 Avoid duplication in fetching active process and scheduler in process-switch machinery. Take advantage of endianness for simpler large integer initialization. Simplify primitiveMakePoint. Include primitiveMethodXray to introspect on Cog state of methods. Refactor positive32BitIntegerFor: and signed32BitIntegerFor: in the realization that these reduce to essentially integerObjectOf: in 64-bit Spur. The idea is to inline if in 64-bit Spur but not if in the 32-bit VMs. Add notOption: processing to allow excluding noInlineSigned32BitIntegerFor: et al. Add hasSixtyFourBitImmediates to no longer assume that wordSize = 8 implies 64-bit immediates. Use positiveMachineIntegerFor: in place of positive32BitIntegerFor: in some plugins. Simplify primitiveDisplayString given isArray:. Simplify two B3DAcceleratorPlugin prims given topRemappableOop and isArray: Slang: Changes to type inferrence/propagation and inlining to better support 64-bit Spur. See change log of VMMaker.oscog in 1067-1085 range for exhaustive details. -- best, Eliot

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Fwd: Re: Example implementation of associations with Slots in Pharo 4.0
by stepharo March 6, 2015

March 6, 2015

The problem is that a relation may be one to one, one to many, many to one or many to many. In each name, the first word refers to upper source multiplicity and the last word to the upper target multiplicity. So according to me RelatedToOne has not the same meaning than OneRelatedTo or ToMany. I am not sure that you want to describe the source multiplicity, so ToOne and ToMany seem more adapted. In Java persistance is specified with the @OneToOne, @OneToMany, @ManyToOne and @ManyToMany annotations. Anne Le 5 mars 2015 Ã 08:10, stepharo <stepharo(a)free.fr <mailto:stepharo@free.fr>> a Ã©crit : > > > > -------- Message transfÃ©rÃ© -------- > Sujet : Re: [Pharo-dev] Example implementation of associations with > Slots in Pharo 4.0 > Date : Wed, 4 Mar 2015 13:20:45 +0800 > De : Ben Coman <btc(a)openInWorld.com> > RÃ©pondre Ã : Pharo Development List <pharo-dev(a)lists.pharo.org> > Pour : Pharo Development List <pharo-dev(a)lists.pharo.org> > > > > Could someone explain why the "ToOne" and "ToMany" are the preferred > semantics for the class names versus OneRelatedTo or RelatedToOne ? > To me, "ToOne" feels like its describing the #directedMovies part. > I guess it makes sense if you are looking in towards #director. > cheers -ben > > On Fri, Feb 27, 2015 at 7:51 PM, Marcus Denker <marcus.denker(a)inria.fr > <mailto:marcus.denker@inria.fr>> wrote: > > > > On 27 Feb 2015, at 11:46, Jan van de Sandt <jvdsandt(a)gmail.com > <mailto:jvdsandt@gmail.com>> wrote: > > > > Hello, > > > > Thanks for your suggestions. I have improved the naming and > definition to this: > > > > Object subclass: #SlotExampleMovie > > slots: { > > #name. > > #year. > > #director => ToOneRelationSlot inverse: > #directedMovies inClass: #SlotExamplePerson. > > #actors => ToManyRelationSlot inverse: > #actedInMovies inClass: #SlotExamplePerson } > > classVariables: { } > > category: 'SlotAssociations-Tests-Example' > > > > Because it is for now just an example I haven't renamed the Slot > classes yet. > > > > Thanks! I will add the associations as examples to Pharo4 (today I > think) > > Marcus > > > > >

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Using Pillar on Windows
by Jean-Christophe Bach March 6, 2015

March 6, 2015

Hi, I was trying to use Pillar on a Windows computer and I discovered that there is no nice script to download and use it as for GNU/Linux. I was wondering if there were Windows users who did it. If so, it would be cool to commit it on Pillar repository. JC

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