Beginners October 2011

beginners@lists.squeakfoundation.org

14 participants
9 discussions

PipeableOSProcess incremental output
by Sean P. DeNigris 28 Nov '11

28 Nov '11

How do I get the output and error of a PipeableOSProcess command line-by-line as it comes, like CommandShell does? I found #setNonBlockingOutput for the output, but "pipeFromError setNonBlocking" doesn't seem to do the same for the errors. Thanks. Sean -- View this message in context: http://forum.world.st/PipeableOSProcess-incremental-output-tp3946435p394643… Sent from the Squeak - Beginners mailing list archive at Nabble.com.

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Is there a tandard way to attach context menus
by Herbert König 04 Nov '11

04 Nov '11

Hello all, is there a standard way to attach a context menu to a morph? It's fairly easy to do by checking for yellowButtonPressed and manually firing up a MenuMorph. But it is sufficient to implement #addCustomMenuItems:hand: to get an enhanced Halo menu while #addYellowButtonMenuItemsTo:event: and #hasYellowButtonMenu don't help. So is there a predefined way without everybody doing his own? Thanks, Herbert mailto:herbertkoenig@gmx.net

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Drawing with Morphic Transforms
by Jeff G 18 Oct '11

18 Oct '11

Hi Everyone, My question concerns how to correctly use transforms when drawing in Morphic. I have created a morph and overridden its drawOn: method so that I can convert the canvas passed in to a BalloonCanvas so I can get anti-aliasing when I draw, and subsequently to a clipping canvas so that I can draw figures outside the bounds of the morph without actually drawing past the morph and onto the Display. One of the things that I would like to do is allow for shapes I am drawing to be given an arbitrary scale, translation, and rotation. Each shape would have an associated transform so that when they are asked to draw they would set their transform on the canvas and draw as though they are situated at the origin and the transform will take care of having the actual rendering occur in the correct location. Ie if a rectangle has size of 20@20 and the morph has its bounds starting from 500@400 (topLeft) then ultimately the rectangle will start drawing from 500@400 to 520@420, and thus will display correctly in the morph. My problem is that I cannot seem to get the canvas to actually take into account the transform that I am setting during drawing. I can call transformBy: or transformBy:clipTo:during: passing in either a MatrixTransform2x3 or a MorphicTransform, with both being given an offset of the Morph's topLeft. I then draw a rectangle at 0@0 with a extent of 100@100. My experience with other vector drawing toolkits would lead me to believe that this should cause the rectangle to draw in the top left corner of the morph no matter where it is onscreen, but alas the rectangle only appears when I move the morph to the top left of the display, meaning that the transform isn't causing an offset to take place during the drawing. Any pointers that could be offered to allow me to get my drawing up and fully transformed would be greatly appreciated as I would like to work on a simple asteroids game after this, and I will be using transforms of basic shapes extensively as they travel around the screen. Thanks for your help, Jeff G.

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Squeak SSL
by Prashanth Hebbar 17 Oct '11

17 Oct '11

Hello, I have modified SqueakSSL>>google: method to access google charts. I am getting a bytestring in return. What I want is to capture the image encapsulated in that bytestring. After much search, I am still unclear how to do this. Can someone please help. I am using Squeak4.2 (and Windows 7). Also a more wider question: when I get a MIME document in return, I do not know how to extract individual component such as images. Any pointers will help. Thanks and Regards, -- Prashanth Hebbar Bangalore

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[ANN] Language of Languages Demo at SPLASH '11
by Nick Chen 17 Oct '11

17 Oct '11

Dear Smalltalkers Jamie Douglass, Ralph Johnson and I are working on an experimental language workbench called Language of Languages (LoLs) that focuses on unifying concepts (meta-models) across different notations. This affords the user greater flexibility for editing the model in a variety of different notations while maintaining consistency. We are building this language workbench on top of Pharo Smalltalk[1] and we are using the Glamour engine[2] to build some of the language browsers. If anyone is attending SPLASH[3] this year, we'd like to invite you to one of our demo sessions. You can find a schedule of our demos at http://languageoflanguages.org/news. You can find more information about LoLs from our website at http://www.languageoflanguages.org. Hope to see you at SPLASH '11! -- Nick University of Illinois at Urbana-Champaign [1] http://www.pharo-project.org/home [2] http://www.moosetechnology.org/tools/glamour [3] http://splashcon.org/2011/ -- View this message in context: http://forum.world.st/ANN-Language-of-Languages-Demo-at-SPLASH-11-tp3910819… Sent from the Squeak - Beginners mailing list archive at Nabble.com.

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OSProcess example
by Prashanth Hebbar 13 Oct '11

13 Oct '11

Hi, I am trying to trigger a ruby script from within Squeak. I loaded OSProcess but none of the examples are working. Are there any pointers on how to use OSProcess correctly. I am using a 3.8 stable version. Regards, -- Prashanth Hebbar Bangalore

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Spreadsheet object
by Jonathan Wright 12 Oct '11

12 Oct '11

Hello, I remember there being a spreadsheet object in the opencroquet project, however I can't seem to find it on squeaksource. I would try to fileout the class but I can't get croquet working on my linux box. Does anyone know of a good spreadsheet object (but not necessarily full application) for Squeak? Thanks in advance. -Jonathan

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[] whileTrue: [] implementation
by Erlis Vidal 06 Oct '11

06 Oct '11

Hi all, I was looking at the implementation of some of the flow control methods and I have a question with the method *whileTrue*. First of all, I can see two identical implementation in the classes * BlockClosure* and *BlockContext* the implementation is this *whileTrue*: aBlock "Ordinarily compiled in-line, and therefore not overridable. This is in case the message is sent to other than a literal block. Evaluate the argument, aBlock, as long as the value of the receiver is true." ^ [self value] whileTrue: [aBlock value] I'm assuming here that there's another class *Block* I'm missing (something like the literal block mentioned in the comment) which is the one that contains the logic I was looking for. But I'm not able to find any other whileTrue method in my image. What's the difference between BlockClosure and BlockContext? Thanks, Erlis

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Squeakmap Package Loader Image 4.2
by dtelford 04 Oct '11

04 Oct '11

Hello, When I bring up the Squeakmap Package Loader, it shows 3 out of the 775 packages. How can I view the other 772 packages? Regards, Doug -- View this message in context: http://forum.world.st/Squeakmap-Package-Loader-Image-4-2-tp3871593p3871593.… Sent from the Squeak - Beginners mailing list archive at Nabble.com.

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Beginners October 2011