- Pharo-users - lists.pharo.org

Re: [Pharo-users] Porting Voss to Pharo

by Paul DeBruicker

What is VOSS? stepharo wrote > Hi guys > > if some of you are interested to drive porting VOSS to Pharo, let me know > John sent me the code and I can give it to you. > There is a dual license > - LGPL > - commercial > Now I do not know the prices for business. > > Stef > > > Begin forwarded message: > > From: "John Clapperton" < > jc@ > > > Subject: VOSS Porting Tips 001 > Date: 24 Feb 2015 11:30:37 GMT+1 > To: 'StÃ©phane Ducasse' < > stephane.ducasse@ > > > > Hi Stephane, > > I strongly recommend first installing VOSS in VA Smalltalk and working > through the tutorial to get the feel of it; then single-step in the > debugger > through the essential functionality to see how it works, in particular the > way messages sent to VORef proxies are forwarded to virtual objects > instantiated in the virtual space's VOCache after loading from disk. > > The public face of a virtual space is an instance of VOManager, which > knows > the file pathname etc, and which references an instance of > VOStorageManager, > which is wrapped in a mutual exclusion VOSMShell, so that only one > Smalltalk > process is allowed in at a time. > > Inside the VOStorageManager is an instance of VOCache (subclass of > VOOrderedDictionary, subclass of Dictionary), which contains all the > virtual > objects (in that virtual space) currently instantiated in the image. > > VORef has three instance variables 'voManager id association '. Any > message > sent to a VORef which is not understood by it (i.e. most of them, it's a > proxy) is forwarded to the VORef's VOManager, where it waits for exclusive > access to the VOStorageManager. > > In there, it (the process) looks for that object's id in the VOCache (if > not > there it's loaded from disk), the object's fixed length (21 bytes) > descriptor record in the sparse index file myspace.vot is locked (against > other images on other machines), and its VOCacheAssociation is locked into > the process's current VOTransaction (which contains a VOOrderedSet of > VORefs) against access by other processes in that image, and is assigned > to > the VORef's 'association' instance variable. > > The process then returns out of the VOStorageManager, out of the mutual > exclusion shell, and back in the context of the VOManager the instantiated > virtual object (referenced by the locked VOCacheAssociation's 'value' > instvar) is told to perform the message, and whatever that returns is > returned to the original sender (if it returns self, then the VORef is > returned to the sender). > > I seem to have got rather deep rather quickly there; let me know which > bits > you want to know about first. > > Probably the most Pharo-specific part of the porting will be the new base > image Collection subclasses. The VOSS Btree collections > (VOLargeOrderedCollection and subclasses) are pretty well self-contained. > > I realise this morning that you weren't asking whether there was a non-VA > implementation, you just meant is it available in chunk format, rather > than > VA library (.dat) format - yes it's attached hereto. But nevertheless, I > strongly recommend having a working version to examine throughout the > porting. > > The current version of VAST is 8.6.1, and VOSS 3.150.14 will object to > that > when you try to run it, expecting VA 8.6. I've looked at the VA86 to VA861 > migration notes, and as far as I can see it's only the version checking > code > (in VODEVUUU module) which needs to be tweaked. I'll do that and upload to > voss.logicarts.com > > Regards, > John -- View this message in context: http://forum.world.st/Porting-Voss-to-Pharo-tp4810019p4810088.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 6, 2015

Re: [Pharo-users] Programatically abandoning

by Laura Risani

Hi Ben , hi Alexandre , Excellent! I wasn't aware of the fact that the exception handling bubbles back to senders. Should reread that chapter. Love, Laura On Thu, Mar 5, 2015 at 8:22 PM, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > Hi! > > Simply put a block [ â¦ ] on: Error do: [ ] > > For example: > > 10 timesRepeat: [ [ 1 / 0 ] on: Error do: [ "do nothing" ] ] > > Cheers, > Alexandre > > > > On Mar 5, 2015, at 5:52 PM, Laura Risani <laura.risani(a)gmail.com> wrote: > > > > Hi all, > > > > How can i within a method, programatically produce the same effect that > would have abandoning a raised debug window? > > > > > > Best, > > Laura > > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > >

March 6, 2015

Re: [Pharo-users] Fixed tool bar in pharo, similar to the one in Squeak

by Offray Vladimir Luna CÃ¡rdenas

Thanks Nicolai. That is exactly what I was looking for. Cheers, Offray El 05/03/15 a las 03:23, Nicolai Hess escribiÃ³: > 2015-03-05 3:49 GMT+01:00 Offray Vladimir Luna CÃ¡rdenas <offray(a)riseup.net > <mailto:offray@riseup.net>>: > > Hi, > > I would like to add a fixed tool bar in the upper side of the word in > Pharo, similar to the one that is in Squeak. I think that having this kind > of fixed places with tools help newbies to find help and launch stuff. There > is any place where I can install or look for a functionality like this one? > > Thanks, > > Offray > > > There is DockingBarMorph, for example: > > |d| > "World deleteDockingBars." > d:= > DockingBarMorph new. > World worldMenu items copy select:[:i| i hasSubMenu] thenDo:[:i| > d > add: i contents > icon: i icon > help: i contents > subMenu: i subMenu]. > d adhereToTop; > openInWorld. > > > Although this does not work at the moment due to issue > 14829 <https://pharo.fogbugz.com/default.asp?14829> > Spec MenuModel submenu not working >

March 6, 2015

Re: [Pharo-users] [Pharo-dev] [ANN AthensSketch] A playground for drawings with Athens.

by Juraj Kubelka

This is great work! Thanks! Juraj > 6. 3. 2015 v 6:14, Nicolai Hess <nicolaihess(a)web.de>: > > 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

March 6, 2015

Notebook/slideshow morph

by blake

Hey, all-- I've used Squeak successfully in the past to replace PowerPoint (and provide some interactivity in a presentation). Does Pharo have a similar navigable notebook tool like Squeak had? I'm looking for something like a notebook I can add pages to, write some text on, paste some pictures or objects on, etc. ===Blake===

March 6, 2015

Re: [Pharo-users] [Pharo-dev] [ANN AthensSketch] A playground for drawings with Athens.

by Alexandre Bergel

This is really good that you are diving into Athens. It deserves it! Alexandre > On Mar 6, 2015, at 10:20 AM, Nicolai Hess <nicolaihess(a)web.de> wrote: > > There is a "play" button in the SketchBrowser. > And if you open just the simple sketch view: > ASketchExampleColors openView > you'll have to start the drawing from the morph menu. > > In a prior version I had some "autoplay" option, but sometimes this throws > a NativeBoost error, if it is the first time it loads the cairo library. > > Maybe I should add the autoplay again. > > > > > 2015-03-06 16:03 GMT+01:00 Torsten Bergmann <astares(a)gmx.de>: > For me all the samples stay black. But the Athens tiger demo works... > > Is this a driver problem? > > Bye > T. > > Gesendet: Freitag, 06. MÃ¤rz 2015 um 10:14 Uhr > Von: "Nicolai Hess" <nicolaihess(a)web.de> > An: "Pharo Development List" <pharo-dev(a)lists.pharo.org>, "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org> > Betreff: [Pharo-dev] [ANN AthensSketch] A playground for drawings with Athens. > > 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 > -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

March 6, 2015

Re: [Pharo-users] [ANN AthensSketch] A playground for drawings with Athens.

by Werner Kassens

Hi Nicolai, very funny and very interesting indeed, i had no idea that athens has that many possibilities and methods. in a way a very instructive docu. werner

March 6, 2015

[ANN (Toy)]: Chord Keyboard

by Sean P. DeNigris

I was watching this great video about Doug Engelbart https://www.youtube.com/watch?v=vdFejSdS9fs and got inspired to write a little chord keyboard simulator :) It's just a proof-of-concept but was fun building! ## Warning N.B. only load this in a throwaway image because it hijacks event handling and it's easy to get into trouble ## Installing: Gofer it smalltalkhubUser: 'SeanDeNigris' project: 'SeansPlayground'; package: 'ChordKeyboard'; load CkChordKeyboard uniqueInstance enable. ## Help "These next two commented lines are to get you out of trouble: CkChordKeyboard uniqueInstance disable. CkChordKeyboard reset. " ## Usage Smalltalk tools openWorkspace. Now use your chord keyboard to type in the workspace... Bit Key 5 a 4 s 3 d 2 f 1 space So to type hi, type: $s = 01000 = 8 = $h $s + Character space = 01001 = 9 = $i ----- Cheers, Sean -- View this message in context: http://forum.world.st/ANN-Toy-Chord-Keyboard-tp4810044.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 6, 2015

Re: [Pharo-users] [ANN AthensSketch] A playground for drawings with Athens.

by Nicolai Hess

There is a "play" button in the SketchBrowser. And if you open just the simple sketch view: ASketchExampleColors openView you'll have to start the drawing from the morph menu. In a prior version I had some "autoplay" option, but sometimes this throws a NativeBoost error, if it is the first time it loads the cairo library. Maybe I should add the autoplay again. 2015-03-06 16:03 GMT+01:00 Torsten Bergmann <astares(a)gmx.de>: > For me all the samples stay black. But the Athens tiger demo works... > > Is this a driver problem? > > Bye > T. > > Gesendet: Freitag, 06. MÃ¤rz 2015 um 10:14 Uhr > Von: "Nicolai Hess" <nicolaihess(a)web.de> > An: "Pharo Development List" <pharo-dev(a)lists.pharo.org>, "Any question > about pharo is welcome" <pharo-users(a)lists.pharo.org> > Betreff: [Pharo-dev] [ANN AthensSketch] A playground for drawings with > Athens. > > 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 >

March 6, 2015

Porting Voss to Pharo

by stepharo

Hi guys if some of you are interested to drive porting VOSS to Pharo, let me know John sent me the code and I can give it to you. There is a dual license - LGPL - commercial Now I do not know the prices for business. Stef Begin forwarded message: From: "John Clapperton" <jc(a)logicarts.com> Subject: VOSS Porting Tips 001 Date: 24 Feb 2015 11:30:37 GMT+1 To: 'StÃ©phane Ducasse' <stephane.ducasse(a)inria.fr> Hi Stephane, I strongly recommend first installing VOSS in VA Smalltalk and working through the tutorial to get the feel of it; then single-step in the debugger through the essential functionality to see how it works, in particular the way messages sent to VORef proxies are forwarded to virtual objects instantiated in the virtual space's VOCache after loading from disk. The public face of a virtual space is an instance of VOManager, which knows the file pathname etc, and which references an instance of VOStorageManager, which is wrapped in a mutual exclusion VOSMShell, so that only one Smalltalk process is allowed in at a time. Inside the VOStorageManager is an instance of VOCache (subclass of VOOrderedDictionary, subclass of Dictionary), which contains all the virtual objects (in that virtual space) currently instantiated in the image. VORef has three instance variables 'voManager id association '. Any message sent to a VORef which is not understood by it (i.e. most of them, it's a proxy) is forwarded to the VORef's VOManager, where it waits for exclusive access to the VOStorageManager. In there, it (the process) looks for that object's id in the VOCache (if not there it's loaded from disk), the object's fixed length (21 bytes) descriptor record in the sparse index file myspace.vot is locked (against other images on other machines), and its VOCacheAssociation is locked into the process's current VOTransaction (which contains a VOOrderedSet of VORefs) against access by other processes in that image, and is assigned to the VORef's 'association' instance variable. The process then returns out of the VOStorageManager, out of the mutual exclusion shell, and back in the context of the VOManager the instantiated virtual object (referenced by the locked VOCacheAssociation's 'value' instvar) is told to perform the message, and whatever that returns is returned to the original sender (if it returns self, then the VORef is returned to the sender). I seem to have got rather deep rather quickly there; let me know which bits you want to know about first. Probably the most Pharo-specific part of the porting will be the new base image Collection subclasses. The VOSS Btree collections (VOLargeOrderedCollection and subclasses) are pretty well self-contained. I realise this morning that you weren't asking whether there was a non-VA implementation, you just meant is it available in chunk format, rather than VA library (.dat) format - yes it's attached hereto. But nevertheless, I strongly recommend having a working version to examine throughout the porting. The current version of VAST is 8.6.1, and VOSS 3.150.14 will object to that when you try to run it, expecting VA 8.6. I've looked at the VA86 to VA861 migration notes, and as far as I can see it's only the version checking code (in VODEVUUU module) which needs to be tweaked. I'll do that and upload to voss.logicarts.com Regards, John

March 6, 2015