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[Pharo-project] [Pharo-Project] About new TxText text model
by Denis Kudriashov Nov. 25, 2012

Nov. 25, 2012

Hello. I look deep at TxText package where Igor and Camillo introduced new text model. Text model based on sequence of span objects. There are now two kind of spans: CharacterSpan and LineSeparator. Each span has reference to next and previous spans. There is TxSelection object which contains cursor. So you can insert new text at cursor, you can cut selection, replace selection with another text. Such maniulation changes text model structure. It can create new span objects. It can split current span at cursor position, It can remove selected spans. Also you can move cursor up, down, left, right. Cursor always know about current span and span position. I like design :). And I want use this package. And I have questions and suggestions: 1) Cursor is end of selection object. So now when you move cursor selection changed, because start of selection stay same. Am I right? I think cursor movement should always reset selection. It is what we see with basic text editors. But cursor now is just instance of TxPosition which implements simple position protocol (move left, up...). It just change current span and span position by movement. TxPosition knows nothing about TxSelection object. That's why I think Cursor class should be introduced here which alway reset text selection by any move. And if you want to change selection bounds just get explicitly start or end of selection and use position api. What do you think? 2) Next question about changes notification of text model. First I want Cursor and Selection objects are annnouncers. So I can implement CursorPresenter and SelectionPresenter to show such objects and handle changes. For example when CursorMovedAnnouncement happen I can move cursor caret morph at appropriate position. Another idea is make span objects announcers. Maybe it is not good idea but I want to subscribe at SpanAdded, SpanRemoved. SpanChanged, SpanSplitted. With such events I can make very simple implementation of TextEditor as list of SpanMorph's. Maybe it is not optimized solution but I think it is most simple thing. So I want to try it. 3) What about auto wrap behaviour? If you have auto wrap option at text editors you have line width restriction. And you should spit real lines of text to visual lines which satisfed this restriction. And text mode should know about such restriction because any text insertion can require new visual lines creation. I think insertion single line text at span position should be executed by special "restriction object". It should return new characters of span which satisfied that restriction. And it should return new span object (or just remains characters) which will present new visual lines. Then this "remains characters" should be inserted to next span at 0 position. When wrap behavior not needed "restriction object" just inserts new text into current characters at given position and returns result. If you agree about such logic please suggest good name for such "restriction object" and instance variable where it will placed (at TxModel I think) Ok, now what do you think about all this? I want implement all my suggestions. But first I want listen your opinions. Best regards, Denis

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[Pharo-project] ProfStef on steroids (was: Athens OpenGL backend - what does it mean?)
by Sebastian Nozzi Nov. 25, 2012

Nov. 25, 2012

Interesting... can you share some details about it already? Or is it too soon...? When I read your past discussion about the help-system not being able to show "figures" (I think Igor pointed it out) I thought: "wait a second, why is it not possible to "embed" Morphs into the text?". I thought I had seen something like that in the past before... (in Squeak). 2012/11/25 dimitris chloupis <thekilon(a)yahoo.co.uk>: > As a first part I am in the process of creating a tutorial generator which > will be ProfStef on steroids for at first offering tutorial for Athens and > later used for any kind of Pharo tutorial.

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Re: [Pharo-project] Athens OpenGL backend - what does it mean?
by Sebastian Nozzi Nov. 25, 2012

Nov. 25, 2012

> sure thing i want as many as we want. Excellent! > we need to change VM, to let image be in better control of host system windows. > once we will have that, having multiple windows & effects will not > pose any problems anymore. :) Now when you say "host system windowS" you mean... that the plan is to have *many* host windows, not just one as is the case? :-O I was just referring to the Morphic class SystemWindow... Cheers, Sebastian

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Re: [Pharo-project] Athens OpenGL backend - what does it mean?
by dimitris chloupis Nov. 25, 2012

Nov. 25, 2012

Oh I have little doubt I am going to regret in many painful ways :D but certainly having someone to offer at least some good advice can go a long way. So yes I am not kidding myself :D But I have come to realise in my life that none of the really fun things in life is easy so I am certainly diving in.Â Thanks Igor you already have helped me more than once getting through smalltalk code and not only. The good news is that you are an open and friendly community that welcomes contribution even from noobs like me and I think that is motivation by itself. ________________________________ From: Igor Stasenko <siguctua(a)gmail.com> To: Pharo-project(a)lists.gforge.inria.fr; dimitris chloupis <thekilon(a)yahoo.co.uk> Sent: Sunday, 25 November 2012, 16:10 Subject: Re: [Pharo-project] Athens OpenGL backend - what does it mean? .. and you can count on me in your quest for excellence :) On 25 November 2012 15:02, dimitris chloupis <thekilon(a)yahoo.co.uk> wrote: > "eye candy" wise this is exactly the focus of my Ephestos project , Morpheas > section. A custom gui , gui designers for easy creating of GUIs by the user > and additional moprh widget with customized look including eye candy. > > I can't make any promises, as I have no clue what kind of obstacles and > technical limitations I am going to find in the process but I can tell you I > am willing to invest years and if all goes well even decades of efforts > since its an area that I love to code for. > > As a first part I am in the process of creating a tutorial generator which > will be ProfStef on steroids for at first offering tutorial for Athens and > later used for any kind of Pharo tutorial. > > I am also interested in helping Athens porting to OpenGL and generally using > NBOpenGL as the next step for Morphic. Excitting stuff the only thing it > worries me is the type of technical blocks / obstacles I may come across but > trying is certainly well worths it. > > > ________________________________ > From: Sebastian Nozzi <sebnozzi(a)gmail.com> > To: Pharo Development <Pharo-project(a)lists.gforge.inria.fr> > Sent: Saturday, 24 November 2012, 17:06 > Subject: [Pharo-project] Athens OpenGL backend - what does it mean? > > Hello Pharo Devs, > > I am really excited about the direction Pharo is taking regarding many > areas - one of them being the graphics. I played with Athens a bit and > it's cool to see anti-aliased vectror graphics coming to Pharo. > > I keep reading about a possible OpenGL back-end in the future... what > would this mean exactly? > > For years I have been "dreaming" about graphic-accelerated "eye-candy" > effects inside of the Smalltalk environment. Like compiz-fusion > effects in Linux, or Quartz-Extreme powerded in OS-X (ExposÃ©, etc.). > > Would this be possible with such a back-end? Or am I misinterpreting > things? I'm not a graphic-dev expert. > > Best regards, > > Sebastian > > > -- Best regards, Igor Stasenko.

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[Pharo-project] [Ann] 4.7 beta
by Tudor Girba Nov. 25, 2012

Nov. 25, 2012

Hi, As a result of the successful Moose Dojo that took place on November 15-16, Moose 4.7 entered the beta state. Some of the outcomes of the Dojo are: - Cleaned a couple of hundred obsolete FAMIX navigation methods (by Robert and Nicolas) - Fixed the major bug when editing code (by Andrei and Stephan) - Fixed several other Glamour bugs (by Erwann) - Worked on improving the PPAllParsersBrowser (by Jan) - Got the GTDebugger to start to work with Bifrost (by Jorge and Andrei) - Got Reloader almost ready to work with Metacello and produce a reloadable version of the complete Moose (by Stephane and me). The 6 remaining issues are listed on the issue tracker: http://code.google.com/p/moose-technology/issues/list?q=milestone%3D4.7 Of these, the most important are: - http://code.google.com/p/moose-technology/issues/detail?id=869 (an unfortunate side effect of getting the code editing fast) - http://code.google.com/p/moose-technology/issues/detail?id=865 (we need to find the way to get the proper loading order of all packages) Anyone want to join efforts on these? Ideally, we should release somewhere at the beginning of December. Afterwards, we move to Pharo 2.0. Cheers, Doru -- www.tudorgirba.com "In a world where everything is moving ever faster, one might have better chances to win by moving slower."

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[Pharo-project] Re; About new TxText text model
by Stephan Eggermont Nov. 25, 2012

Nov. 25, 2012

Hi Igor, The TxText model to me seems to mix two concerns. The storage of the text and manipulating it? Both cursor positioning and selection manipulation are view dependent, and there might be more than one. Stephan

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[Pharo-project] Pharo 2.0 on Raspberry Pi ?
by Sven Van Caekenberghe Nov. 25, 2012

Nov. 25, 2012

Hi, Does anyone know how to make Pharo 2.0 run on a Raspberry Pi ? I am running an up to date 2012-10-28-wheezy-raspbian (Linux raspberrypi 3.2.27+ #250 PREEMPT Thu Oct 18 19:03:02 BST 2012 armv6l). There seems to be a Stack VM on it, it does run Smalltalk code, but there is some initialization error, a loop of VM: unix - armv7l - linux - THERE_BE_DRAGONS_HERE MessageNotUnderstood: receiver of "do:" is nil 22 November 2012 8:55:09.996 pm in PharoDebug.log. I will (try to) look deeper into this, but if someone knows how to get things working, I would be grateful for any help. It would be really great if we as a community would be able to offer this as an option. Thx, Sven PS: I specifically want to run a (possibly patched) Pharo 2.0 image, not something else. -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

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[Pharo-project] NativeBoost callbacks - status?
by Ciprian Teodorov Nov. 25, 2012

Nov. 25, 2012

Hi Igor, What is the extent to which callbacks are currently supported in NB? On my machine (macos10.6) they do not seem to work properly. The quick sort test crashes the VM. What are the limitations of the current implementation? Thanks Ciprian

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Re: [Pharo-project] Athens OpenGL backend - what does it mean?
by Fernando Olivero Nov. 25, 2012

Nov. 25, 2012

yes! But not only it would enable having multiple windows, because now we "downgrade" all the events to the minimum common denominator, and pass a "raw event" captured from each OS, from the vm to the image. would be nice to do some surgery on the vm, and cut the windowing management and raw event handling away. It belongs in the image, if it can be implemented using NB to the OS UI frameworks, or in a separate app. We just need a surgeon with the time and ability to do soâ¦.i've tried in the past and the related VM code was really hard to understand. Fernando pd: There were some discussion around this idea last year in the mailing list. On Sun, Nov 25, 2012 at 9:40 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > > On Nov 24, 2012, at 5:19 PM, Sebastian Nozzi wrote: > > >> sure thing i want as many as we want. > > > > Excellent! > > > >> we need to change VM, to let image be in better control of host system > windows. > >> once we will have that, having multiple windows & effects will not > >> pose any problems anymore. :) > > > > Now when you say "host system windowS" you mean... that the plan is to > > have *many* host windows, not just one as is the case? :-O > > we would love that. > This is not because there is not something right now that this is > something we do not want. > We just try to make progress and not open too many projects. Finishing is > important to pass to the > next level. > > > > > > I was just referring to the Morphic class SystemWindow... > > > > Cheers, > > > > Sebastian > > > > >

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[Pharo-project] MongoTalk update
by Nicolas Petton Nov. 25, 2012

Nov. 25, 2012

Hi guys, Lately I worked a bit on the Pharo Mongo driver for SmalltalkHub. I made several changes (in the new version 1.4): The query API changed: - MongoCollection>>query: now takes a 1 arg block, improving the API quite a bit. Queries like: aCollection query: (aCollection query query: { 'foo' -> 'bar'} asDictionary; yourself) Is now written: aCollection query: [ :query | query where: { 'foo' -> 'bar'} ] Sending #asDictionary has also been made optional, the query builder will send #asMongoQuery to the query collection. The MongoQueries package: Version 1.4 comes with a new package MongoQueries, a small DSL allowing us to use traditional blocks instead of dictionaries to perform queries. This is optional and backward compatible. Queries like: aCollection select: { '$or' -> { 'name' -> 'foo'. 'age' -> { '$gt' -> 23 } asDictionary } asDictionary } asDictionary can be expressed: aCollection select: [ :each | (each name = 'foo') | (each age > 23) ] The MongoQueries package should support the entire mongo query language (including nested queries), and comes with unit tests. Nico

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