March 2012 - Pharo-dev - lists.pharo.org

[Pharo-project] FileURL don't works properly on windows
by Igor Stasenko March 27, 2012

March 27, 2012

Try: (FileDirectory default / 'foo') asUrl retrieveContents -- Best regards, Igor Stasenko.

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[Pharo-project] VM on iOS: still no luck, even with 4.2 and Cmake 2.8.3
by philippe.back＠highoctane.be March 27, 2012

March 27, 2012

Hello, Out of options for 4.3, I downloaded Xcode 4.2 and installed it back alongside 4.3. Then cleaned about everything, regenerated sources (including the IOSPlugin issue). xcode select to go back to 4.2 Then did a cmake -G Xcode . in build/ An Xcode project materialized there. Opening it works,.. well, opens as an empty project in Xcode. There are lots of stuff in the package tough. Viewable and all. But nothing to build... :-( Argh. /Philippe

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[Pharo-project] more Nautilus feed back
by Esteban Lorenzano March 27, 2012

March 27, 2012

Hi, I'm using Nautilus for my current projects since... well... couple of days, and I have some feedback: (yeah... maybe they are dumb reports, but that's because you did a great work with nautilus, I just have some really small observations :) 1) OB had double-click action: show hierarchy. I miss it a lot :( Also, hierarchy button is too far away when I want to see the hierarchy... ok, if you don't want to add double click functionality... can it be a menu option? (show hierarchy (h)) Even worst: it swaps panels which is very confusing... but that leads to point 2 :) 2) swap panel configuration is not working for me in latest pharo 1.4 3) I find "Class", "Instance" buttons very confusing. I liked more the older solution but well, I understand you want to improve visibility of comments, but then, I think class button would be better as a "toggle" button (those buttons who stays pressed) 4) bold for class side method and categories is too strong, I don't see any reason for that, we have panel titles and future ;) toggle button to know which side is. 5) OB had a #browserIcon method on classes who changed class icon on browser. This is really useful for knowing different types/hierarchies like errors, announcements, morphs, etc. Again, this collides with "uncommented" icon, but I would like to have them back... 6) I'm sorry for saying this, but I don't like the icons, nor the colored options (source, bytecode, decompiled, etc.) at the side. I would prefer a combo on button panel... and better looking icons (yes Stef, FamFam icons is ok :) 7) Why we have a button panel (which is in fact a toolbar) in the middle of the browser and not where it belongs: on top? this is a remain of OB, who took this from old Browser... but conceptually (as in usability terms), this is a not-good solution. We could think on change this and place the button bar where it belongs (and add some cool keybindings too) 8) different sized buttons are a really bad concept. Yes... in Smalltalk this is very common: to create buttons with the size of text... but this is bad design because disrupts harmony, and that hurts to the eyes... and when something hurts, you try not to use it :) yeah.. most of my observations are also for any other tool we have, and most are about usability... I humbly recommend (for all people doing GUIs), the lecture of this book: http://en.wikipedia.org/wiki/Don't_Make_Me_Think. It is for web design, but is also a great guide when you want to make things people like. (Also, reading apple design guide is a good way to notice some interesting things... those guys had invest an insanely amount of time and money in development them) best, Esteban

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[Pharo-project] CodeLoader>>startUp: installing World?
by Guillermo Polito March 27, 2012

March 27, 2012

CodeLoader class>>startUp: resuming resuming ifTrue: [ World ifNotNil: [ World install. ActiveHand position: 100@100]. self processUpdates. ]. Is this method ok in this class? I'd expect for World ifNotNil: [ World install. ActiveHand position: 100@100]. to be on PasteUpMorph or so... Guille

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[Pharo-project] Bug in WAMemoryItem>>sizeOfObject
by niko.schwarz＠googlemail.com March 27, 2012

March 27, 2012

Hi guys, I haven't checked if this bug exists already, so please ignore this if it's been reported before. Bug in WAMemoryItem: sizeOfObject: anObject | headerSize instanceSize variableSize | headerSize := anObject class indexIfCompact > 0 ifTrue: [ 4 ] ifFalse: [ 8 ]. instanceSize := anObject class instSize. variableSize := anObject class isBytes ifTrue: [ anObject basicSize ] ifFalse: [ anObject class isWords ifTrue: [ Smalltalk wordSize * anObject basicSize ] ifFalse: [ Smalltalk wordSize * anObject basicSize // 2 ] ]. ^ headerSize + instanceSize + variableSize In this snippet, the units that are added together in the last line are of different units. instanceSize is in unit "number of machine words", whereas variableSize and headerSize are in unit "bytes". The method is fixed here: sizeOfObject: anObject | headerSize instanceSize variableSize | headerSize := anObject class indexIfCompact > 0 ifTrue: [ 4 ] ifFalse: [ 8 ]. instanceSize := anObject class instSize * Smalltalk wordSize. variableSize := anObject class isBytes ifTrue: [ anObject basicSize ] ifFalse: [ anObject class isWords ifTrue: [ Smalltalk wordSize * anObject basicSize ] ifFalse: [ Smalltalk wordSize * anObject basicSize // 2 ] ]. ^ headerSize + instanceSize + variableSize Example: |m| dict := Dictionary new. m := WAMemory new. dict traverseWithMemory: m seen: IdentitySet new. m totalSize This will incorrectly spit out 10, but should return 16, on a 32 bit VM. Niko -- http://scg.unibe.ch/staff/Schwarz twitter.com/nes1983 Tel: +41786126354

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[Pharo-project] how to get a string read stream from filesystem
by Tudor Girba March 27, 2012

March 27, 2012

Hi, I am using Filesystem, and I would like to get a read stream that provides a string instead of bytes. If I do "aReference readStream", I get a FSReadStream which is a byte stream. To get to the string, I now do the ugly: "aReference readStream contents asString" Is there a cleverer way? Cheers, Doru -- www.tudorgirba.com "What we can governs what we wish."

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[Pharo-project] Silly question: how to start up pharo on a given image?
by stefano franchi March 27, 2012

March 27, 2012

Dear all, this may be a silly question, but I can't find the answer in the pharo book or on the list: how do you start pharo on a specific image? in Visualworks, you'd do $vw imagename and from then on, the image and change file would be saved in imagename's directory. But in pharo, it seems the imagename I give on the command line is ignored, and I always start with the default image (which, on my archlinux system, is located at /usr/share/pharo). Since that directory is not writable by default and it contains the change file, I get all sort of errors. Perhaps it is an installation issue? Cheers, Stefano -- __________________________________________________ Stefano Franchi Associate Research Professor Department of Hispanic Studies Â Â Â Â Â Â Ph:Â Â +1 (979) 845-2125 Texas A&M UniversityÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Fax: Â +1 (979) 845-6421 College Station, Texas, USA stefano(a)tamu.edu http://stefano.cleinias.org

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[Pharo-project] [TODO 1.4] 12 issues left
by Marcus Denker March 26, 2012

March 26, 2012

Just 12 issues left that are tagged 1.4: http://code.google.com/p/pharo/issues/list?&q=milestone%3D1.4 -> are any of these not show stoppers? -> are there any other tracker entries that are show stoppers for a release? -- Marcus Denker -- http://marcusdenker.de

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[Pharo-project] 3D from the past
by Schwab,Wilhelm K March 26, 2012

March 26, 2012

Hello all, The attached is something that I cobbled together using Squeak Alice (in Squeak 3.6). Faced with this problem now, I would make 2D drawings in QCad, but at the time, I didn't have that option. So I built some code that made it easy to put actors on "shelves" and then stack same, add some vertical posts, and boom. It allowed me to see that the items in question (medical monitors, a computer, other junk) would actually fit on a cart I was planning to buy - visibility was high, so I didn't want any goof ups. There are buttons to move/look up/down, zoom in/out, and to spin the object. It was a nice way to visualize the pile of junk in question. This is a simple example of things that I would like to be able to do with 3D: create some objects, put meshes on them, and render in a window. Whether the objects are controlled by buttons or are flying around shooting each other would depend on the project and my mood. Bill

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Re: [Pharo-project] Building the iOS VM
by philippe.back＠highoctane.be March 26, 2012

March 26, 2012

Hello, I have spent a fair chunk of my day grinding my teeth at getting this working in Xcode 4.3 Not there yet. I am better at Cmake, Xcode 4.3, iOS5.1 SDK and GenerateSources for sure... The Xcode project gets generated but Xcode doesn't agrees with me opening it. Key findings: * all pathes are different with Xcode 4.3 - there is a patch for Cmake to deal with this, I applied it into my macports install. * several frameworks are not findable as expressed in the cmake config (CoreGraphics, UIKit, ..) * there was a bug in the image, where sqTouch.m is involved. The correct thing is IOSPlugin and not touchplugin as mentioned * a lot of pathes are hardcoded in the image and it for sure doesn't help with the relocation of stuff by Apple It would be great to be able to discuss this in an IM session one of these days. The answer is not far. Attached the cmake stuff from the main dir (there are things in all plugins but they all come from generate sources initially). Kind Regards, Philippe

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