June 2015 - Pharo-users - lists.pharo.org

Morphs automatic repositioning (and resizing)
by Mark Rizun June 25, 2015

June 25, 2015

Hello, everyone! Let's say I have morph which contains few other morphs. Is there any way to reposition all these submorphs (if needed resize, but it's optional), so that they do not intersect with each other? Thanks in advance, Mark -- View this message in context: http://forum.world.st/Morphs-automatic-repositioning-and-resizing-tp4834043… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Proposed fix for RFB. Please review
by Christer Assmundsson June 25, 2015

June 25, 2015

Hi all, I have fixed (?) an issue in RFB server that seems to solve a problem I had with initiating a session. After the fix it works at least with UltraVnc. Still not with tightVnc though, has to be some other problem with that. As I'm not very experienced with pharo I'd like to have somebody elses eyes on it before checking it in to SmaltalkHub (if I even have access to that). Quality status on the fix is "works on my machine" At the start of RFBSession>> sendFramebufferUpdate | updateRegion nRects sendCursor sendPosition | preferredEncoding ifNil: [^self]. "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< new code" self beginUpdate. ... Reasoning: Until we know what encoding to use, we can't send updates. Just discard them. It will be picked up later. Technical: Futher down in the method we call "countRects" which is not set until we set encoding, and therefore the method fails with DNU. Please let me know how I should proceed. Best regards, Christer

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Re: [Pharo-users] Moose
by abdelghani ALIDRA June 24, 2015

June 24, 2015

Hi Actually I am not using a specifc tool to generate feature models. For the moment, I am using XML Files to express features because tools like SPLOT use such format so it would be easy to export it into Moose. It would be nice to have the Frascati feature model file, just to test some new metrics and visualisations and better understand the code :) Abdelghani Â DeÂ : Alexandre Bergel <alexandre.bergel(a)me.com> ÃÂ : abdelghani ALIDRA <alidrandco(a)yahoo.fr> EnvoyÃ© le : Mercredi 24 juin 2015 17h03 ObjetÂ : Re: [Pharo-users] Moose Hi! No, we do not have a particular description of the text file. This was made in a very ad-hoc way, and very close to Familiar. Since I guess you are using your own platform to express features and variability, I guess this text description is not that useful for you. Alexandre --Â _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel Â http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. On Jun 24, 2015, at 8:13 AM, abdelghani ALIDRA <alidrandco(a)yahoo.fr> wrote: Thanks for the document. Since Familiar code is open, I mayÂ want to reuse some parts of it. I noticed there is a FMTexImportCommand class in the Familiar package. This is to load a feature model from a text description or file I gess. What is the structure of such a file? Maybe you have some examples also? Regards.Abdelghani DeÂ : Alexandre Bergel <alexandre.bergel(a)me.com> ÃÂ : abdelghani ALIDRA <alidrandco(a)yahoo.fr> EnvoyÃ© le : Mardi 23 juin 2015 15h39 ObjetÂ : Re: [Pharo-users] Moose What I try to do is to use Moose to model, raisonÂ and do visualizations on feature models (a variability model used to model variability in software product lines) In the feature model there is a concept called crosstree constraints relying two features (fonctionnalities) example: aFeature requires aNotherFeature. The relation goes from aFeature to aNotherFeature. Okay. Interesting topic.We did a bit of work on this, you may want to have a look at it:https://dl.dropboxusercontent.com/u/31543901/MyPapers/Urli15-FeatureComp… Cheers, Alexandre Regards DeÂ : Alexandre Bergel <alexandre.bergel(a)me.com> ÃÂ : abdelghani ALIDRA <alidrandco(a)yahoo.fr>; Any question about pharo is welcome <pharo-users(a)lists.pharo.org> EnvoyÃ© le : Lundi 22 juin 2015 19h41 ObjetÂ : Re: [Pharo-users] Moose Hi! I have never used the previous and next. No idea whether this is used or not.What are you trying to achieve? Cheers,Alexandre --Â _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel Â http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. On Jun 22, 2015, at 12:06 PM, abdelghani ALIDRA <alidrandco(a)yahoo.fr> wrote: Hi everybody, when working with the FAMIX meta model, one must implement the previous, next, from and to methods for each class extending FAMIXAssosiation. What is the diffence between previous/from and next/to?if I make MyFamixClass>>from^previousthe same information is displayed twice in the Moose panel (because both methods are annotated with the MSEProperty in the superclass)Who can one avoid that? Regards Abdelghani

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Any YAML parser?
by Julien Delplanque June 23, 2015

June 23, 2015

Hi everybody, I googled a bit for a YAML parser in Pharo but I didn't found anything. Does anybody wrote a YAML parser for Pharo? Regards, Julien

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Roasal: Putting a white background instead of a transparent one in word clouds
by Offray Vladimir Luna CÃ¡rdenas June 23, 2015

June 23, 2015

Hi, I have finally finished the first part of my visualization project of political discourses on Twitter. You can see the details here: http://mutabit.com/offray/static/blog/output/posts/visualizing-politiciansp… (As you can see Pharo was not used to extract the data, just to scrap it, structure it and visualize it). The politicians tag cloud look nice if the background is white, because the png background is transparent, but if you share it on Twitter, the black background makes the tag cloud invisible. I could use image editing programs to change the background from transparent to white, but I would like to know if there is a way to make that change inside Pharo/Roasal. Thanks for all your support in making this ideas possible. Cheers, Offray

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Moose
by abdelghani ALIDRA June 23, 2015

June 23, 2015

Hi everybody, when working with the FAMIX meta model, one must implement the previous, next, from and to methods for each class extending FAMIXAssosiation. What is the diffence between previous/from and next/to?if I make MyFamixClass>>from^previousthe same information is displayed twice in the Moose panel (because both methods are annotated with the MSEProperty in the superclass)Who can one avoid that? Regards Abdelghani

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Environment-independent styler?
by Martin Dias June 23, 2015

June 23, 2015

Hello, Suppose that you want to show the diff between the source code of two methods. In the case that both methods are in the same class, and that such class is present in the system, then no problem: In a DiffModel, one can set a context to the smalltalk syntax styler and get a nice output. DiffModel new leftText: (Point >> #x) sourceCode; rightText: (Point >> #y) sourceCode; contextClass: Point; openWithSpec. [image: Inline image 1] But what happens in the case that the class does not exist in the system? If one doesn't set any context to the styler, then the string will be shown all in black, which is not nice. A partial solution could be to set Object as a context, then the styler will color the code, but instance variables are in red: DiffModel new leftText: (Point >> #x) sourceCode; rightText: (Point >> #y) sourceCode; contextClass: Object; openWithSpec. [image: Inline image 2] Which is also not nice. In my opinion, there should be a styler that just colors the code following the syntax, without checking if the variables or classes are present in the system. It would be an environment-independent styler. What do you recommend to implement this? I guess it should be easy to subclass SHTextStylerST80 and override some methods to do not check anything in the environment. What's your opinion? Thanks, Martin

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About generating chapters with Pillar/Pier tools
by HernÃ¡n Morales Durand June 22, 2015

June 22, 2015

Hello, I have experimented several dissapointing errors when working with updated Pillar tools. I am not doing anything special besides working under Windows. Apparently the Pillar CommandLineHandler is not working because OSEnvironment exception (Windows 8.1). When executing Pharo.exe Pillar.image export --to=html BioPharo.pier The attached exception raises. This happens in all the images from: https://ci.inria.fr/pharo-contribution/job/Pillar/PHARO=40,VERSION=stable,V… Pharo4.0 (Latest update: #40614) https://ci.inria.fr/pharo-contribution/job/Pillar/PHARO=40,VERSION=developm… Pharo4.0 (Latest update: #40614) https://ci.inria.fr/pharo-contribution/job/Pillar/PHARO=50,VERSION=stable,V… Pharo5.0 Latest update: #50124 Changing the method #baseDirectory to use %CD% environment variable doesn't fix it even when it works in command line: c:\MySmalltalkProjects\Pillar\pharo-vm>echo %PWD% %PWD% c:\MySmalltalkProjects\Pillar\pharo-vm>echo %CD% c:\MySmalltalkProjects\Pillar\pharo-vm The solution I found was to replace the OSEnvironment line with FileSystem workingDirectory as suggested at: https://pharo.fogbugz.com/f/cases/15356/Pillar-command-line-script-doesn-t-… About instructions given here https://ci.inria.fr/pharo-contribution/job/EnterprisePharoBook/lastSuccessf… you do not need MinGW to export a Pier chapter. See here https://github.com/biosmalltalk/biopharo/blob/develop/doc/pier2tex.bat for an example Another (worst) situation happened when I wanted to convert a generated LaTeX to PDF. I had to remove all tables, annotations and notes from the .pier file because errors reported in pdfLaTeX . For tables : ! Undefined control sequence. l.176 \toprule For notes (i.e. @@note ) ! LaTeX Error: Environment note undefined. See the LaTeX manual or LaTeX Companion for explanation. Type H <return> for immediate help. ... l.178 \begin{note} Finally generated PDF looks different from previous versions. Previous Pillar version: https://github.com/biosmalltalk/biopharo/blob/develop/doc/BioPharo.pier.pdf Current Pillar version (>= 0.56) : https://github.com/biosmalltalk/biopharo/blob/develop/doc/BioPharo.pdf Now I am the only one generating PDF with Pillar in Windows? HernÃ¡n

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<example> pragmas and example* methods use-cases
by Torsten Bergmann June 22, 2015

June 22, 2015

Tudor Girba wrote: >We are working on a more elaborate model for examples, but we need a bit >more time to get to a rounder solution. Hi Doru, Sorry - but I think this is not acceptable as a satisfying answer: Remember that the GT extension <gtExample> was developed in parallel a little too bit hidden. It got then integrated as <example> shortly before release although Nautilus already honored <example> similar to exampleXXX methods. We ended up with the broken icon behavior, (over)heated discussion, conflicting code and disagreement. During the discussion you also requested that we should not treat GT as an "Alien". But that requires from your side to involve the community - also in future plans and ideas. Pharo is yours the same as any others. So please elaborate who is "we" and what you are working on/what is the model looking like. Making a plan or contributing to a discussion does not mean to have something instantly ready in good quality to prove own points ... Ben wrote: >Sorry. I'm going to have to play the native english speaker card here. >I could live with it, but "examplar" just doesn't sound right for this. The word comes from latin "exemplum". I'm fine similar to Damien if "sample" better fits english language for the method name prefix and/or pragma: sampleA ^ $A or characterSample <sample> ^ $A Thanks T.

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<example> pragmas and example* methods use-cases
by Torsten Bergmann June 22, 2015

June 22, 2015

Hi Peter, there was no agreement - so we rolled back for Pharo 4 to discuss/decide for Pharo 5. I communicated already how I would solve it to get IMHO a consistent and easy understandable solution: 1. executable example ===================== We talk about executable code here: an "example" in the traditional Smalltalk sense means ONLY a runnable piece of code to demonstrate something. Since a long time and not only in Pharo this is typically done in methods with prefix "example". It is important to note that these methods COULD BUT MUST NOT RETURN an instance. Usually such a method is only there to demonstrate code. These methods with the "example" in the name are currently honored by Nautilus with the clickable icon. See SystemProgressMorph>>exampleChangeLabel or others. => To not be limited to the prefix in the method name I proposed to be able to additionally use the <example> pragma to mark example methods. This way you can choose the method name freely to give an example to others on how to use them. 2. returning examples ===================== While some example methods just demo code and code usage (like "Job example" or "BorderedMorph exampleGradient") a subset of them directly return an instance of the method defining class (like LabelMorph>>example). The idea of the GT Tools is to call these methods and display the return value as inspectable "instances" in the tools, so for instance if you inspect class VirtualMachine or Character you get a tab entitled "E.g." where you can click on these sample instances. GT and (because GT )now latest Pharo currently still uses "gtExample" method prefix or <gtExample> pragma to mark such methods and there is also to wish to remove the "gt" prefix. But with this we would have a clash with the other "exampleXXX" usage. => I would propose to mark the code examples that return an instance with an <exemplar> method. According to Google definition of <exemplar> noun - "a person or thing serving as a typical example or excellent model." Urban dictionary defines <exemplar> as "a typical or standard model or specimen" So I proposed and still propose - "exampleXXX" prefixed methods and <example> pragma for traditional examples as used in other Smalltalks and Pharo before - "exemplarXXX" prefixed methods and <exemplar> pragma (mark code that return an instance always) for the future inspection of exemplars in the tools Thanks Torsten

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