February 2015 - Pharo-users

Canvas Transform Goes Haywire if Scaled
by Sean P. DeNigris Feb. 7, 2015

Feb. 7, 2015

The following works as I expect: morph := Morph new topLeft: 200@400; openInWorld. outputRect := morph fullBounds. canvas := Display defaultCanvasClass extent: outputRect extent depth: Display depth. scale := 1. t := MorphicTransform offset: outputRect topLeft angle: 0 scale: scale. clipRect := outputRect translateBy: outputRect topLeft negated. canvas transformBy: t clippingTo: clipRect during: [ :aCanvas | aCanvas fullDrawMorph: morph ]. canvas form asMorph openInWindow. "morph delete." but if I change scale even a little bit (e.g. 0.95), things quickly go south. Check out scale = 1 vs scale = 0.95 below: <http://forum.world.st/file/n4803830/Screenshot_2015-02-05_00.png> Obviously they differ by more than I expected. If I change scale to 0.5, the morph disappears from view in the canvas completely. I had both translation and scale working in a spike by translating with FormCanvas>>#translateBy:during: and then magifying with "canvas form magnifyBy: 0.5", but I want to do this in my morph's drawing method, so I want to do both with the canvas. Where am I going wrong here? ----- Cheers, Sean -- View this message in context: http://forum.world.st/Canvas-Transform-Goes-Haywire-if-Scaled-tp4803830.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

5 10

[ANN] Pharo Consortium New Academic Partner: REVEAL University of Lugano
by Marcus Denker Feb. 7, 2015

Feb. 7, 2015

The Pharo Consortium is very happy to announce that the REVEAL research group of the University of Lugano has joined the Consortium as an Academic Partner. The REVEAL (Reverse Engineering, Visualization, Evolution Analysis Lab) group carries out research in diverse aspects of how to ease the comprehension and evolution of large and complex software systems. Current research is focused on software visualization, mining software repositories, collaborative development, and novel integrated development environments. About - REVEAL: http://www.inf.usi.ch/faculty/lanza/reveal.html - University of Lugano: http://www.usi.ch/en/index.htm - Pharo Consortium: http://consortium.pharo.org The goal of the Pharo Consortium is to allow companies and institutions to support the ongoing development and future of Pharo. Individuals can support Pharo via the Pharo Association: http://association.pharo.org

1 0

Slides PharoDays...
by Marcus Denker Feb. 7, 2015

Feb. 7, 2015

Hi, Slides are online: http://www.slideshare.net/pharoproject/presentations <http://www.slideshare.net/pharoproject/presentations> (thanks to Santiago for collecting and uploading!) Videos soonâ¦ need to put titles and cross links to slides. Marcus

1 0

DateAndTime>>fromJavaScriptTime:
by Sebastian Sastre Feb. 7, 2015

Feb. 7, 2015

Hi guys, When you have a JavaScript date number like: new Date(1412279266711) for Thu Oct 02 2014 16:47:46 GMT-0300 (BRT) It would be really great to be able to do in Pharo something like: DateAndTime fromJavaScriptTime: 1412279266711 Do we have something that can do that?

2 1

Cleaning code completition's namespace
by Laura Risani Feb. 7, 2015

Feb. 7, 2015

Hi all, Code completition tools show class/method old names i've changed and no longer use. How can i remove all unused (occurring nowhere in source code) or unimplemented names? Best, Laura

7 12

Relationship between Morph and Canvas
by nacho Feb. 6, 2015

Feb. 6, 2015

Hi, I've been digging and inspecting all the classes related to Morphic. But there's something that I don't happen to figure out. Morph has a method drawOn: aCanvas aCanvas fillRectangle: self bounds fillStyle: self fillStyle borderStyle: self borderStyle Which if it's not overridden by a subclass of Morph makes it possible to still instantiate a Morph -the classic blue rectangle. Now aCanvas is obviously an instance of FormCanvas or some other subclasses of Canvas. But the question is, where does Morph create such instance of FormCanvas? How does this work? I'm getting all wrong? I read the documentation available but I can't grasp it from what I have read. Thanks in advance for your help best Nacho ----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/Relationship-between-Morph-and-Canvas-tp4804251.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

3 2

CFP - IWST 2015
by jannik laval Feb. 6, 2015

Feb. 6, 2015

[Please accept our apologies if you receive multiple copies of this call] [Please send to interested colleagues / mailing-lists] ************************************************************************************************************ CALL FOR PAPERS IWST15 â International Workshop on Smalltalk Technologies Brescia, Italy; July 15, 2015 http://www.esug.org/wiki/pier/Conferences/2015/International-Workshop-IWST_… ************************************************************************************************************ ------------------- Goals and scopes ------------------- The goals of the workshop is to create a forum around advances or experience in Smalltalk and to trigger discussions and exchanges of ideas. The topics of your paper can be on all aspect of Smalltalk, theoretical as well as practical. Participants are invited to submit research articles or industrial papers. This year we want to open two different tracks: one research track and one industrial track with less scientific constraints. We expect papers of three kinds: Short position papers describing emerging ideas Long research papers with deeper description of experiments and of research results. Industrial papers with presentation of real and innovative Smalltalk applications; this kind of paper should enlighten why Smalltalk is really appropriate for your application. We will not enforce any length restriction. -------------------- Important Dates -------------------- Submission deadline: April 10th, 2015 Notification deadline: May 20th, 2015 Workshop : July 15th, 2015 All accepted papers will be published in ACM DL (To be confirmed) ------------------- Topics ------------------- We welcome contributions on all aspects, theoretical as well as practical, of Smalltalk related topics such as: -Aspect-oriented programming, -Design patterns, -Experience reports, -Frameworks, -Implementation, new dialects or languages implemented in Smalltalk, -Interaction with other languages, -Meta-programming and Meta-modeling, -Tools ------------------- Best Paper Award ------------------- To encourage the submission of high-quality papers, the IWST organizing committee is very proud to announce a Best Paper Award for this edition of IWST. We thank the Lam Research Corporation for its financial contribution which makes it possible for prizes for the three best papers: 1000 USD for first place, 600 USD for second place and 400 USD for third place. The ranking will be decided by the program committee during the review process. The awards will be given during the ESUG conference social event. The Best Paper Award will take place only with a minimum of six submissions. Notice also that to be illegible, a paper must be presented at the workshop by one of the author and that the presenting author must be registered at the ESUG conference. ------------------- Publication ------------------- Both submissions and final papers must be prepared using the ACM SIGPLAN 10 point format. Templates for Word and LaTeX are available at http://www.acm.org/sigs/sigplan/authorInformation.htm. This site also contains links to useful informations on how to write effective submissions. ------------------- Submission ------------------- All submissions must be sent via easychair: https://easychair.org/conferences/?conf=iwst2015 ------------------- Program chairs ------------------- Anne Etien (UniversitÃ© de Lille 1, France) Jannik Laval (Ecole des Mines de Douai, France) -- ~~Jannik Laval~~ Ãcole des Mines de Douai Enseignant-chercheur http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info http://car.mines-douai.fr/

1 0

spotter preview
by Tudor Girba Feb. 6, 2015

Feb. 6, 2015

Hi, The Glamorous Team is happy to present a new feature in Spotter: preview (you toggle it with Cmd+p). We think this boosts the usefulness of the Spotter interface significantly. [image: Inline image 1] For more details, please take a look at: http://www.humane-assessment.com/blog/boosting-gtspotter-with-preview This is available in the Moose image, and it will soon be integrated in the Pharo one. Please let us know what you think. Cheers, Doru -- www.tudorgirba.com "Every thing has its own flow"

8 12

Re: [Pharo-users] Question on Morphic drawOn: method.
by Stephan Eggermont Feb. 6, 2015

Feb. 6, 2015

Hilaire wrote >Read the Pharo by example Morphic chapter, it is written for beginner The chapter is a good introduction. Also read the LaserGame Tutorial. The problems come after that. What is a good way of distributing responsibilities? How do I find which Morph already does (nearly) what I need. There are 347 Morph subClasses in my currently open image. When I want to resize my Morph, should I be looking at one of the AbstractResizerMorph subClasses, at Halo or perhaps at Handle? Or should I do it like PolygonMorph? In the LaserGame, the whole game is one Morph (embedded in a window with a few buttons). I find it is possible to create very elegant solutions using Morphic, and finding the right approach is difficult. Stephan

1 0

Question on Morphic drawOn: method.
by nacho Feb. 6, 2015

Feb. 6, 2015

Hi, I have the following question: I want to draw a bouncing ball. First thing I do is create a class: EllipseMorph subclass: #Ball instanceVariableNames: 'position' classVariableNames: '' category: 'PBE-BouncingBall' Then an initialization method that mostly do a super initialize. Then the drawOn: drawOn: aCanvas aCanvas borderWidth:10; borderColor: Color green. And finally a position method: position: aPoint super position: aPoint. position ^ position. Finally in a Playground I do: | aBall | aBall := Ball new. aBall position: ( 10@10 ). aBall openInWorld. But I get a red box with two crossing yellow lines. What I'm missing? Thanks in advance. Nacho ----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/Question-on-Morphic-drawOn-method-tp4803695.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

6 16