January 2011 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Why Sets need to be rehashed when loading them from an ImageSegment?

by Igor Stasenko

One example: #foo identityHash in one image and same #foo identityHash in another image could be different, because these symbols could be interned in different time(s). So, if you have a identity set or identity dictionary which using symbols as keys, which is often the case , you need to rehash them. Just tried it image 1 #awdqedqwd identityHash 633602048 image 2 #awdqedqwd identityHash 398196736 note that i specifically picked the symbol, which is not yet interned (not exists) in image. Obviously, you cannot change the identityHash of symbol(s) which already present in image, because you don't know where it used outside of object(s) you are loading. On 10 January 2011 10:51, Mariano Martinez Peck <marianopeck(a)gmail.com> wrote: > Hi. I was almost sure that Set instancesÂ that were written in an > ImageSegment,Â needed to be rehashed once they are swap in. And I even > thought I was understanding why. But now, I don't understand at all why is > that. I would really appreciate anyway that can give me a hint. > > So...ImageSegment rehashes all Set instances (at loading time) that were > written in an ImageSegment, and then exported with ReferenceStream. Notice > that this rehash is finally called from ImageSegment >> comeFullyUpOnReload: > smartRefStream. > When you export an ImageSegment with a reference stream, you also serializer > the "outPointers" array. This is usually the case when you want to load the > object subgraph in another image or when do it backups so that to start with > a clean image.Â Notice that the Set rehash only occurs in this case. If we > use ImageSegment just to swap out / in, there is no Set rehash. > So...I think that this has something to do about WHY Set instances need to > be rehashed. > > For each object ImageSegment write into the file, it writes both: object > header + slots.Â Â So....the hash (12 bits in the object header) is copied. > When the object is loaded back, it continues to have the same hash. It > doesn't change. > So...if hash doesn't change, why Set instances need to be rehashes when they > come back from an ImageSegment? > > Thanks in advance, > > Mariano > -- Best regards, Igor Stasenko AKA sig.

Jan. 10, 2011

Re: [Pharo-project] aligning morphs

by Gary Chambers

Hi Doru, #spaceFill constraints are typically only used by table layouts. ScrollPane is designed for fixed size contents, at present. Might be nice to extend it to honour any #spaceFill of its single target morph. This would simplify usage of scrollers quite a bit! Regards, Gary ----- Original Message ----- From: "Tudor Girba" <tudor.girba(a)gmail.com> To: "Pharo-project(a)lists.gforge.inria.fr Development" <pharo-project(a)lists.gforge.inria.fr> Sent: Saturday, January 08, 2011 1:22 AM Subject: [Pharo-project] aligning morphs Hi, I would need help with understanding the magic behind alignment in Morphic. Take the example from below. Could anyone help me with what I should do to have the morph stretch all the way horizontally? | scroll window morph | scroll := ScrollPane new. scroll fillStyle: (SolidFillStyle color: Color blue); vResizing: #spaceFill; hResizing: #spaceFill. morph := PanelMorph new. morph fillStyle: (SolidFillStyle color: Color yellow); changeTableLayout; listDirection: #topToBottom; vResizing: #shrinkWrap; hResizing: #spaceFill; layoutInset: 10. morph addMorphBack: (SimpleButtonMorph new width: 200; height: 200). scroll scroller addMorph: morph. window := SystemWindow new. window addMorph: scroll fullFrame: (LayoutFrame fractions: (0 @ 0 corner: 1 @ 1)). window openInWorld Cheers, Doru -- www.tudorgirba.com "Every thing should have the right to be different."

Jan. 10, 2011

Re: [Pharo-project] additional font size?

by Alain Plantec

Le 10/01/2011 11:26, Alexandre Bergel a Ã©crit : > Hi! > > Apparently, the 1.2 image contains only the size 7, 9 and 12 for Bitmap DejaVu Sans. Can we get additional font sizes? Are there a vectorial font police supported in Pharo? I would like to be able to give any arbitrary font size. Hi Alexandre, Isn't it possible with true type fonts ? you can load them from the setting browser or directly with: FreeTypeFontProvider current updateFromSystem Cheers Alain > Cheers, > Alexandre >

Jan. 10, 2011

[Pharo-project] [update 1.2] #12295

by Marcus Denker

12295 ----- Issue 3521: StringMorphEditor doesnt work Issue 3514: Failing Test: NewTextMorphTests.testAcceptContents -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

Jan. 10, 2011

Re: [Pharo-project] Issue 3514 in pharo: Failing Test: NewTextMorphTests.testAcceptContents

by pharo＠googlecode.com

Updates: Status: Closed Comment #4 on issue 3514 by marcus.denker: Failing Test: NewTextMorphTests.testAcceptContents http://code.google.com/p/pharo/issues/detail?id=3514 12295

Jan. 10, 2011

Re: [Pharo-project] Issue 3521 in pharo: StringMorphEditor doesn't work

by pharo＠googlecode.com

Updates: Status: Closed Comment #2 on issue 3521 by marcus.denker: StringMorphEditor doesn't work http://code.google.com/p/pharo/issues/detail?id=3521 12295

Jan. 10, 2011

Re: [Pharo-project] Origins [poll] Summary

by Olivier Auverlot

Jan. 10, 2011

Re: [Pharo-project] Origins [poll]

by Geert Claes

Jan. 10, 2011

[Pharo-project] How to display an image from an external PNG/JPG file in a Morph?

by Dimitry Golubovsky

Hi, Thanks Alain, this worked for me. Alain Plantec wrote: > (ImageReadWriter formFromFileNamed: 'pharoLogo.jpg') asMorph openInWorld > works also PS Before asking on the list I tried to google on the topic, nothing relevant returned. At least now googling for "pharo display png file" yields this mailing list thread in the first page among other not so relevant results: someone like me will find the answer faster. Thanks again. -- Dimitry Golubovsky Anywhere on the Web

Jan. 10, 2011

[Pharo-project] additional font size?

by Alexandre Bergel

Hi! Apparently, the 1.2 image contains only the size 7, 9 and 12 for Bitmap DejaVu Sans. Can we get additional font sizes? Are there a vectorial font police supported in Pharo? I would like to be able to give any arbitrary font size. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Jan. 10, 2011