Beginners August 2008

beginners@lists.squeakfoundation.org

60 participants
58 discussions

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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Omnibrowser help
by Rob Rothwell 14 Aug '11

14 Aug '11

Are there some tips/documentation somewhere on getting the most out of the OmniBrowser? The MulitpleSelection browser looks interesting (sort of like the tabbed browser in VisualWorks), but I don't quite understand its behaviour and what method it decides to show in which pane when you move around or save changes. On the same topic, can anyone point me toward how I could add a new item to the class context menu in the OmniBrowser? I want to add a new template selection menu item (like "new class template" and "new trait template") because I have created a method that creates TWO classes at the same time for an Aida application (A domain model class AND its associated WebApp class). Thanks, Rob Rothwell

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MonticelloBrowser question
by Ch Lamprecht 23 May '09

23 May '09

Hello, could anybody help me to understand, how to use MonticelloBrowser? (Working with 3.9 #7067) I read SBE and it says: " The right-hand pane lists all of the source-code repositories that Monticello knows about, usually because it has loaded code from them. If you select a package in the left pane, the right pane is filtered to show only those repositories that contain versions of the selected package." However, I don't see that happen. If I select e.g. OmniBrowser in the left pane, the list in the right pane is reduced to a local path on my filesystem (the package-cache). But if I deselect all in the left pane to see all the repositories in the right pane, then select 'http://source.wiresong.ca/ob' and open the repository I get a browser containing lots of newer version of OmniBrowser (and other packages). Now these repository browsers always take some time to load and I have to check different repositories by hand to find the latest version. What is the right way to search (and update) to the latest release of a package? Thanks for your help, Christoph

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Level Playing Field image compression side effect
by Rob Rothwell 30 Sep '08

30 Sep '08

Hello... I have noticed that after installing packages (say for example starting with a dev image and loading everything else you need), my image will swell considerably (as noticed both on the disk after saving, and with MemoryUsage). Garbage collection and saving doesn't seem to fix it, but if I re-run the level playing field script, it seems to clean things up. I'm not sure what it's doing, but I thought it worth passing on... However, if you do this a lot (because you mess things up so badly that you have to unload and re-load packages to get things straightened out, which I can confess to on the Beginners List), make sure you do a Smalltalk condenseChanges every now and then, or it will come back to bite you too! Rob

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Skewing Forms in Squeak V2
by Iulian Wande Radu 23 Sep '08

23 Sep '08

Hi, I'd like to skew the graphics of a Form, is there an easy way to do this in v2 ? What I want is to take the rectangle from a normal form, transform it into an arbitrarily-defined quadrilateral, and then paint on the screen. I saw that WarpBlt does something like this.. but it maps a quadrilateral section of a form onto a rectangle.

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Re: [Newbies] Good practice for modeling model tools
by Marcin Tustin 30 Aug '08

30 Aug '08

Have you looked at Magritte? On Fri, Aug 29, 2008 at 8:04 AM, Anders Janmyr <anders(a)janmyr.com> wrote: > Hi, > > I would like some thought on what is a good way to model "model tools" > in Smalltalk. > > Clarification > The user should be able to create classes. > The classes contain named variables. > The variables can be described (typed) with data such as type (String, > Date, Company) and multiplicity (1, 2..5, 4..) > I also want to attach behavior to the classes. > I would also want to be able to refactor the classes, preferably with > the existing tools > > Example: > Person > name:String:1 > mother:Person:1 > father:Person:1 > children:Person:0.. > > Process > name: ImportPeople > executeMethod: "code for importing people into my model" > > Should I model the users models as Smalltalk objects or should I make > my own parallel hierarchy. > Should the Person above be dynamically created as a smalltalk class: > > Person > name: > mother: > ... > > or should I use > MyClass > name: Person > instVars: #(name mother ...) > > > > Any help will be appreciated. > > Anders > > -- > http://anders.janmyr.com/ > _______________________________________________ > Beginners mailing list > Beginners(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/beginners >

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Good practice for modeling model tools
by Anders Janmyr 29 Aug '08

29 Aug '08

Hi, I would like some thought on what is a good way to model "model tools" in Smalltalk. Clarification The user should be able to create classes. The classes contain named variables. The variables can be described (typed) with data such as type (String, Date, Company) and multiplicity (1, 2..5, 4..) I also want to attach behavior to the classes. I would also want to be able to refactor the classes, preferably with the existing tools Example: Person name:String:1 mother:Person:1 father:Person:1 children:Person:0.. Process name: ImportPeople executeMethod: "code for importing people into my model" Should I model the users models as Smalltalk objects or should I make my own parallel hierarchy. Should the Person above be dynamically created as a smalltalk class: Person name: mother: ... or should I use MyClass name: Person instVars: #(name mother ...) Any help will be appreciated. Anders -- http://anders.janmyr.com/

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Common/Best Practices on (Collaborative) Version Control
by Matthias Korn 27 Aug '08

27 Aug '08

Hi all, we are a small group of people working together on a project in Squeak. Now, I was wondering what the most common workflow for supporting collaborative work in the Squeak environment is. Like normally you would have a central SVN repository where everyone could check their stuff in and than update and merge new stuff with their own local repository... As far as I understand, Monticello does all the versioning and packaging stuff. But I currently do not see the collaborative part in that (without sending mcz-files via eMail). Also, we do not want to publish our project (like on SqueakSource) at this point in time. We are looking for an internal solution. What is generally the most common workflow to do that in Squeak? Thanks, Matthias

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Re: [Newbies] The Bridge Playing example
by Marcin Tustin 26 Aug '08

26 Aug '08

For anyone who's interested, here's an implementation with the cards represented as integers (or wrapping integers). Perhaps this could be the basis of a super-compact representation. In any case, sorting hands becomes simpler, but either dealing (creating a card object) or checking that a play is legal becomes more involved (because at some point you would have to reconstruct the symbolic information regarding suit and rank). Alternatively, if you want to make the deck bridge-specific you could change the undealt variable into an Array or OrderedCollection, and after shuffling treat each of the quarters as belonging to a specific hand. Again, more compact, less simplicity. Taking something out of the hand could be represented by replacing that card's integer with 0 in the deck/hand array. Another alternative would be to use an "ordinary" representation for shuffling etc. then write that into a bit-packed representation with each two bits representing a player, as the original questioner wanted. Some utility classes could go over that to make handling such a thing look like an array of players, and use a formatting method similar to the one used in the attached code.

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Re: [Newbies] Latex + Squeak
by Lukas Renggli 25 Aug '08

25 Aug '08

On 8/23/08, K. K. Subramaniam <subbukk(a)gmail.com> wrote: > On Saturday 23 Aug 2008 6:42:13 pm Lukas Renggli wrote: > > Have a look at Pier-Math package in > > http://source.lukas-renggli.ch/pieraddons, this package enables you to > > embed LaTeX formulas into Pier documents. It does so by creating a > > LaTeX file, and converting that file using the LaTeX tools to a png > > image. > > Hi Lucas, > > I noticed hard-coded paths for latex and dvipng executables. If this was > intentional, wouldn't a single command line be more efficient? e.g. > latex file.tex && dvipng file.dvi Yes, the plugin is not that nicely implemented. I just made it work on a server of a customer of mine. I guess there is some refactoring needed to make it work on other Unixes, Windows, and Mac. Lukas -- Lukas Renggli http://www.lukas-renggli.ch

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Beginners August 2008