Beginners November 2008

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54 participants
49 discussions

Aw: Re: [Newbies] TextMorph
by pascal.vollmer＠nexgo.de 05 Nov '08

05 Nov '08

Hi Mark, Thanks for your advice. But the behavior I experience seems not to depend on extent:. Let me show an example: 1.) a := TextMorph borderedPrototype. a openInWorld. 2.) b := TextMorph borderedPrototype. b newContents: ''; openInWorld. 1.) shows a text 'abc' with big font. When getting focus you will see a big cursor. You may start to change it. 2.) shows nothing. When getting focus you will see a small cursor. And when you start to change it you will see small font text. This does not change when you add b extent: 100@100. There is an additional observation. If you take code snippet 1.) and edit it you will loose vertical size of cursor and text when you walk from 1 character to 0 character and 1 character again. But pay attention: this is true for character deletion with the Del-key. It is not true for the Backspace-key. If anyone can give me a clue on this I would be grateful. You may find my TimesTable app on SqueakSource. Kind regards Pascal ----- Original Nachricht ---- Von: Mark Volkmann <mark(a)ociweb.com> An: "A friendly place to get answers to even the most basic questions about Squeak." <beginners(a)lists.squeakfoundation.org> Datum: 04.11.2008 00:00 Betreff: Re: [Newbies] TextMorph > On Nov 3, 2008, at 4:51 PM, pascal.vollmer(a)nexgo.de wrote: > > > Hello, > > > > I write a times table application for children: a question, an > > equals sign, an answer. For the answer field I would like to see a > > TextMorph. It should be empty, prepared for big size figures and > > with a big size cursor waiting for input. > > > > I tested TextMorph>>borderedPrototype the contents of which is > > initialized to 'abc'. Now, when I change 'abc' to an empty string... > > cursor size is reduced and the first figure that is typed by the > > user will be small size. > > > > Why this different behavior? > > > I think the issue is that if you want the TextMorph to be larger than > the text inside it (in your case none), you have to set its extent. > Here's some code that works for me. Note how I set the extent height > of "textField" based on the font size of the StringMorph. I set the > extent width to a fixed value of 100 pixels. > > spaceBetweenMorphs := 10. > spaceInsideContainer := 10. > > container := Morph new. > container > layoutPolicy: TableLayout new; > listDirection: #leftToRight; > hResizing: #shrinkWrap; > vResizing: #shrinkWrap; > layoutInset: spaceInsideContainer; > cellInset: spaceBetweenMorphs; > width: 200. > > label := StringMorph contents: 'I''m a label.'. > font := label font. > margin := 4. > height := font lineGrid + (margin * 2). > container addMorphBack: label. > > textField := TextFieldMorph new. > textField extent: 100@height. "text doesn't display if insufficient > height" > container addMorphBack: textField. > > --- > Mark Volkmann > > > > > _______________________________________________ > Beginners mailing list > Beginners(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/beginners > Pascal Vollmer Email: pascal.vollmer(a)ieee.org Jetzt komfortabel bei Arcor-Digital TV einsteigen: Mehr Happy Ends, mehr Herzschmerz, mehr Fernsehen! Erleben Sie 50 digitale TV Programme und optional 60 Pay TV Sender, einen elektronischen Programmführer mit Movie Star Bewertungen von TV Movie. Außerdem, aktuelle Filmhits und spannende Dokus in der Arcor-Videothek. Infos unter www.arcor.de/tv

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characters like tilde, etc.
by TooMany Secrets 04 Nov '08

04 Nov '08

Hi! I need to know how to configure Squeak (vm 3.10.x) to obtain spanish characters like: á, í, ú, etc. I have Squeak configured to Spanish language, and characters like "ñ" works fine, but the tilde "accent" doesn't work. My OS platform is openSUSE 11.0 (GNU/Linux). Thank you very much. -- Have a nice day ;-) TooManySecrets ============================ Dijo Confucio: "Exígete mucho a ti mismo y espera poco de los demás. Así te ahorrarás disgustos." ============================

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RE: [Newbies] Morphic Layout
by Gauland, Michael 04 Nov '08

04 Nov '08

I've done some poking around with TableLayout, and I'm starting to get a feel for how it works. One that I haven't puzzled out is how to make a morph (I'm using a TextMorph inside a BorderedMorph) expand and contract as its containing morph (in my case, another BorderedMorph) is resized. Any advice on this would be appreciated. Thanks, Mike -----Original Message----- From: beginners-bounces(a)lists.squeakfoundation.org [mailto:beginners-bounces@lists.squeakfoundation.org] On Behalf Of Herbert König Sent: Thursday, 30 October 2008 9:51 a.m. To: A friendly place to get answers to even the most basic questions aboutSqueak. Subject: Re: [Newbies] Morphic Layout Hello Michael, GM> Can anyone help me learn the 'modern' way oflaying out GM> morphs? I'm trying to create a stack-based ('RPN')calculate in GM> So, what is the best way to layout a set of morphs? At GM> leastfor now, all I need is a grid of buttons, that will look GM> sensible when theparent calculator morph is resized. TableLayout is your friend here. The class comment gives some hints. A week or so ago there was a discussion about Morphic table layouts, there you can find hints where to get grid layouts. In general you can send a Morph layoutPolicy: TableLayout new I suggest you create a Morph, add a TableLayout like above, bring up the halo, the red button offers layout. There you can experiment and see the options you have. If you don't look into the thread in Squeak dev, beware TableLayout is no real table layout but a row or column layout. -- Cheers, Herbert _______________________________________________ Beginners mailing list Beginners(a)lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners ********************************************************************** This electronic message together with any attachments is confidential. If you receive it in error: (i) you must not use, disclose, copy or retain it; (ii) please contact the sender immediately by reply email and then delete the emails. Views expressed in this email may not be those of the Airways Corporation of New Zealand Limited **********************************************************************

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TextMorph
by pascal.vollmer＠nexgo.de 04 Nov '08

04 Nov '08

Hello, I write a times table application for children: a question, an equals sign, an answer. For the answer field I would like to see a TextMorph. It should be empty, prepared for big size figures and with a big size cursor waiting for input. I tested TextMorph>>borderedPrototype the contents of which is initialized to 'abc'. Now, when I change 'abc' to an empty string... cursor size is reduced and the first figure that is typed by the user will be small size. Why this different behavior? Kind regards Pascal Pascal Vollmer Email: pascal.vollmer(a)ieee.org Jetzt komfortabel bei Arcor-Digital TV einsteigen: Mehr Happy Ends, mehr Herzschmerz, mehr Fernsehen! Erleben Sie 50 digitale TV Programme und optional 60 Pay TV Sender, einen elektronischen Programmführer mit Movie Star Bewertungen von TV Movie. Außerdem, aktuelle Filmhits und spannende Dokus in der Arcor-Videothek. Infos unter www.arcor.de/tv

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sending an email programmatically
by sergio 03 Nov '08

03 Nov '08

i am peeking around in the smalltalk libraries, and can't figure out how to quickly send an email programmatically... so far, i really like the idea of smalltalk, but it seems to be taking me a very long time to even start thinking about maybe being production with it.. am i just missing some huge "smalltalk cookbook" somewhere? thanks! ___ peace, sergio photographer, journalist, visionary www.village-buzz.com

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concatenation of non-Collections
by Mark Volkmann 03 Nov '08

03 Nov '08

Wouldn't it be convenient if you could do this: msg := 'The number is ', number instead of msg := 'The number is ', number printString Or even this: msg := number, ' is the value you entered.' instead of msg := number printString, ' is the value you entered.' This would require the comma method in Collection to act differently when the argument isn't a Collection and the Number class would need to add a comma method. I'm pretty new at this, so maybe there are reasons this is done. Are there? As some might guess, I'm used to the way Java automatically calls toString on things that aren't strings when one side of a concatenation is a String and the other isn't. --- Mark Volkmann

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another "best practices" question - inject
by Mark Volkmann 03 Nov '08

03 Nov '08

The "Inject:Into:" pattern in "Smalltalk Best Practice Patterns" says "Call the block arguments sum and each." That seems crazy! Why would I name the first argument "sum" if I've trying to do something other than sum the values? The example the book gives is the following. ^self children inject: 0 into: [:sum :each | sum max: each] I think I'd do this. ^self children inject: 0 into: [:maximum :each | maximum max: each] --- Mark Volkmann

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formatting keyword messages
by Mark Volkmann 02 Nov '08

02 Nov '08

I'm reading "Smalltalk Best Practice Patterns". The pattern "Indented Control Flow" recommends putting each keyword on a separated line, indented with a tab. I like that for long messages, but this one example annoys me. array at: 5 put: #abc Earlier the author explains the how conserving vertical space increases readability. This example contradicts that advice. Also, it just seem so verbose compared to the Java equivalent of "array[5] = "abc";". Do experienced Smalltalkers really like this formatting for short messages like at:put: or is the following preferred? array at:5 put: #abc --- Mark Volkmann

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task for squeak?
by sergio 02 Nov '08

02 Nov '08

i am really excited about using smalltalk in some of my day to day programming tasks.. it seems like even for quickie utility projects, it might be a good tool .. i have been asked to write some scripts that massage some adobe indesign xml files and cull some information and draw some conclusions about them.. the beauty is, it only has to read them, not write or edit them... so the i would just slurp them up, and apply some processing to them.. and spit out some stats.. maybe to a web interface.. aside from figuring out how to get squeak to slurp up a file like this into memory.. does squeak have good xml traversing libraries, and does this sound like a feasible tool? thanks! ___ peace, sergio photographer, journalist, visionary www.village-buzz.com

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Beginners November 2008