- Pharo-dev - lists.pharo.org

WhatsUp from: 2014-09-15 until: 2014-09-30
by seaside＠rmod.lille.inria.fr Sept. 15, 2014

Sept. 15, 2014

Hi! We're sending this automatic email twice a month, to give the community an opportunity to easily know what's happening and to coordinate efforts. Just answer informally, and feel free to spawn discussions thereafter! ### Here's what I've been up to since the last WhatsUp: - $HEROIC_ACHIEVEMENTS_OR_DISMAL_FAILURES_OR_SIMPLE_BORING_NECESSARY_TASKS ### What's next, until 2014-09-30 (*): - $NEXT_STEPS_TOWARDS_WORLD_DOMINATION (*) we'll be expecting results by then ;)

1 0

[pharo-project/pharo-core]
by GitHub Sept. 14, 2014

Sept. 14, 2014

Branch: refs/tags/40225 Home: https://github.com/pharo-project/pharo-core

1 0

AlphaImageMorph performance
by kilon alios Sept. 14, 2014

Sept. 14, 2014

so I sat down to find a good way to import pngs with transparence in pharo and animate them and I ended up to this code morph:= AlphaImageMorph new. morph openInWorld . form1 :=Form fromFileNamed:'/Users/kilon/Pictures/box.png'. form2 :=Form fromFileNamed:'/Users/kilon/Pictures/box2.png'. [(1 to: 100) do: [ :index| morph image: form1 . (Delay forMilliseconds: 2) wait. morph image: form2 . (Delay forMilliseconds: 2) wait. ]]fork. gave me a basic animation then I did the proper thing and I created my own class subclassing AlphaImageMorphing and used stepping every 40 milliseconds (25 fps) to create an animation of 2 frames , frame 1 is image box.png and frame 2 is image box2.png. Both images are 600x600 and contain transparency. Now one morph is fine , seems to work ok and does not raise my cpu much. However when I kept adding instances of the class I found out that after 3 the animation was considerably slow down, pharo also slow down with slow response to my command , when I reached 6 instance I saw failed redrawing of the moprh which was like it was cutting pieces out of the image for a second or so and pharo interaction was quite slow. The cpu one of the four cores were up to 50%. CPU consumption is not bad at all , I compared with playing a youtube FULL HD video which was the same resolution and it was consuming 30% of the cpu. However I wonder if this the best way to do this. Its clear that there is no way with my current solution I can fully animate a big pharo window that is more than 1200x1200 without serious flickering and ideally I should not animate more than 1000x1000 for smooth animation. So is this all ? Are there any improvements I may apply ? Would Athens be faster in this case ? I did not try because Athens is using Morphic anyway so it should be same if not worse.

2 7

Which Character Encodings do you want/need in Pharo ?
by Sven Van Caekenberghe Sept. 14, 2014

Sept. 14, 2014

Hi, ZnCharacterEncoder and its subclasses in the package Zinc-Character-Encoding-Core (a standard part of Pharo) have the following features: - proper Unicode Character/String to/from byte(s) encoding/decoding - calculation of encoding size per Character/String - proper handling of holes in tables with exceptions (strict/lenient) - properly backing up one character on a binary stream - simple, efficient, documented - convenience API - optimisations for some encodings Together, they support the following encodings: - utf-8 - utf-16 (big/little endian, bom detection) - null - iso-8859-1 (latin-1) - iso-8859-2 (latin-2) - mac-roman - cp1250 - cp1252 - cp1253 - koi8r - iso-8859-7 - iso-8859-15 The question is, what other encodings do you want/need ? There is already a request to add CP1251. New byte encoders are easy to add, based on the official Unicode mappings that can be found here: http://unicode.org/Public/MAPPINGS (these are automagically parsed). Please help us make Pharo more international friendly. Sven

4 10

Pharo breakpoints
by Johan Brichau Sept. 14, 2014

Sept. 14, 2014

Hi guys, As described in this issue on the Seaside tracker [1], it appears that setting a breakpoint on a method simply sends the #break message. As #break is not an uncommon method name, the choice for this makes is a de-facto reserved method in Pharo. Would it not be better to rename #break to #_break ? This will avoid unintended clashes. Johan [1] https://code.google.com/p/seaside/issues/detail?id=829

4 3

Roassal vs Roassal 2
by kilon alios Sept. 14, 2014

Sept. 14, 2014

I see in the roassal.pdf that it refers to roassal but in smalltalkhub there is also Roassal 2. Which of the two I should be using and whats their diffirence ? Will the existing roassal.pdf documentation work with Roassal 2 ?

5 8

Thanks :)
by stepharo Sept. 13, 2014

Sept. 13, 2014

Every time we improve the system with a little change, the system gets better. And in Pharo we do it daily. Thank you all for all your changes and enhancements. **You** make Pharo cool. http://pharoweekly.wordpress.com/2014/09/12/there-is-no-such-thing-as-an-un…

5 4

Re: [Pharo-dev] fosdem 2015
by Stephan Eggermont Sept. 13, 2014

Sept. 13, 2014

Santiage wrote: >Hi people!, Will we have room in next FOSDEM? I will put out a proposal for a devroom, yes. That is no guarantee that we will get one, the amount of space is limited. Stephan

4 3

Starting with Roassal 2
by kilon alios Sept. 12, 2014

Sept. 12, 2014

Ok here comes the first question how I change the background color of RTView ? also when I do this v := RTView new. shape := RTEllipse new size: 20; color: Color red. shape := shape + RTLabel. es := shape elementOn:'hello'. v add: es. line := RTDirectedLine new pointsFrom: 20@20 To: 30@30. es2 := line element.v add: es2. es @ RTDraggable. v @ RTDraggableView . v open. I am getting an error MNU Array >> element why ?

2 9

[pharo-project/pharo-core]
by GitHub Sept. 12, 2014

Sept. 12, 2014

Branch: refs/tags/40224 Home: https://github.com/pharo-project/pharo-core

1 0