Beginners April 2010

beginners@lists.squeakfoundation.org

36 participants
42 discussions

Re: Is there a reason why this RadioButton group doesn't ever call the callback?
by Andy Burnett 28 Apr '10

28 Apr '10

John McKeon wrote: <<< Hey Andy I have a radio group defined like this (using your code): renderContentOn:html | group | html form: [ html radioGroup [ :rg | rg radioButton submitOnClick; selected: self contact isMale; callback: [self halt]; with: [html text:'male']. rg radioButton...etc ] Hope that helps John >>> Thanks John, That does fix part of the problem. Initially the radio buttons weren't actually in concert - the code in the Seaside book wasn't producing 'name="something"' code. I wonder whether that code would ever work? Anyway, unfortunately, the callbacks are still not working. It is very odd. The form renders properly, it is just that the callbacks never fire. The code below shows two version - radio button and select statement. The select version works perfectly. I would be really interested to know how to go about debugging this. renderContentOn:html html form: [ html radioGroup: [ :rg | rg radioButton selected: self contact isMale; callback: [self contact beMale]; with: [html text:'male']. rg radioButton selected: self contact isFemale; callback: [self contact beFemale]; with: [html text:'female']. ]. html select list: #(#Male #Female); selected: self contact gender; callback: [:value| (value=#Male) ifTrue:[self contact beMale] ifFalse:[self contact beFemale]]. html submitButton on: #save of:self. ] Cheers Andy

2 2

Is there a reason why this RadioButton group doesn't ever call the callback?
by Andy Burnett 27 Apr '10

27 Apr '10

Hello I am sure I am missing something very obvious - hence the posting on the beginners' list. I am working through the seaside book, and everything has been fine, until I tried to replace my select item with a radio group. The form renders correctly, but never fires the callbacks. Could someone poke me with a clue stick? By the way, the self halts are in there because when I put the halt commands in the beMale beFemale methods, they never fired either. So I was working my way back up the chain. The strange thing is that the other text input boxes (removed in this snippet) updated the model correctly. renderContentOn:html | group | html form: [ group := html radioGroup. html text:'male'. html radioButton group: group; selected: self contact isMale; callback: [self halt]. html text: 'female'. html radioButton group: group; selected: self contact isFemale; callback: [self halt]. html submitButton on: #save of:self. ] Cheers Andy

2 1

Inserting graphics made with Squeak into a web page?
by Pascale Julia 26 Apr '10

26 Apr '10

Hello, I just installed Squeak on Ubuntu Karmic. I'd like to find a way of making web pages made of various graphics. Say I get wild with my niece one afternoon and we draw and make animations with Squeak, and family picture albums and all kinds of things graphic that do things (and that fit into a web page). Apparently I can save this as a "project". (By the way, I have no idea where my doodles ended up on my Linux, still looking for them. How do I save those projects and can I insert them into a web page (and of course, keep the animations and such). I'd be very thankful to get an idea of whether this is at all possible. Thank you very much in advance, --Pascale

3 2

Re: [Newbies] Inserting graphics made with Squeak into a web page?
by Jerome Peace 25 Apr '10

25 Apr '10

--- On Sat, 4/24/10, Pascale Julia <pascale.julia(a)gmail.com> wrote: From: Pascale Julia <pascale.julia(a)gmail.com> Subject: [Newbies] Inserting graphics made with Squeak into a web page? To: beginners(a)lists.squeakfoundation.org Date: Saturday, April 24, 2010, 7:31 PM Okay. Fasten your seatbelts. There are ways and ways. First we are talking static pictures here. Animations are an advanced topic. Saving a picture of your morph: First and easiest you can save a snapshot of any morph. Do the halo click. >From the red menu>export then select gif jpg png or bmp. Usually I choose png. Getting a morph you want to save: >From the world menu>new morph>grab rectangle from screen.. Will give you a cursors for choosing the top left then bottom right corners. The image in that rectangle becomes the basis for a sketchMorph. Then go to "First"ly. That should be pretty much what you need. Yet theres more. You can get an image snapshot of any morph by Doing the halo click. Hold the shift down while pressing the viewer(light blue center left) handle. This image can be resized, combined with other morphs, resnapshoted until you have something you want. Then go to "First"ly. The useful thing about this is the ability to get an image from just the morph you selected after you have designed it just the way you wanted. So there you have probably a little more than you really wanted to know. Hth, Yours in curiosity and service, --Jerome Peace Hello, I just installed Squeak on Ubuntu Karmic. I'd like to find a way of making web pages made of various graphics. Say I get wild with my niece one afternoon and we draw and make animations with Squeak, and family picture albums and all kinds of things graphic that do things (and that fit into a web page). Apparently I can save this as a "project". (By the way, I have no idea where my doodles ended up on my Linux, still looking for them. How do I save those projects and can I insert them into a web page (and of course, keep the animations and such). I'd be very thankful to get an idea of whether this is at all possible. Thank you very much in advance, --Pascale -----Inline Attachment Follows----- _______________________________________________ Beginners mailing list Beginners(a)lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners

1 0

Adding method to Smallinteger class
by noobie 24 Apr '10

24 Apr '10

Hello, I literally just installed squeak about an hour ago. After looking at some tutorials and playing around I have a basic understanding of the environment. Im now trying to figure out how to add a method to the smallinteger class. I have found some examples but they are a little too complex for me to understand.....sorrry im being dumb...... the method I would like to add would be called larger and would return larger of receiver and parameter. Could someone please walk me through this step by step. for example. 10 larger: 6 evaluates to 10 thanks for your help in advance. -- View this message in context: http://forum.world.st/Adding-method-to-Smallinteger-class-tp2062877p2062877… Sent from the Squeak - Beginners mailing list archive at Nabble.com.

6 8

Array questions
by noobie 24 Apr '10

24 Apr '10

I have a few questions about writing methods dealing with arrays.... Firstly, how would i make a method that returns true or false if the receiver is in the array. example 1 inArray: #(1 2 3 4) should return to true Second, how would i make a method that will return the number of integers in the array different from the integer parameter anArray howmany: 5 should return how many elements in the array are different from the number thanks again. -- View this message in context: http://forum.world.st/Array-questions-tp2063011p2063011.html Sent from the Squeak - Beginners mailing list archive at Nabble.com.

4 4

Camera plugins was Re: Video Media in Squeak
by David Corking 22 Apr '10

22 Apr '10

Bert Freudenberg wrote: > There is VideoFlow which is pretty cool (scroll down to the screenshots): > http://wiki.squeak.org/squeak/2411 > If it's just for playback, the only cross-plattform option right now is MPEG > for which we have a general plugin. For Mac and Windows, the Sophie folks > made nice players via FFI, based on QuickTime I think. On Linux there is a > GStreamer plugin. > For camera access, there is Scratch's x-platform CameraPlugin. Etoys on > Linux uses a V4L plugin. For Windows there is a "DShowVideoDecoderPlugin". I think most things that Bert mentions are open source, apart perhaps from the Scratch plugin. As it is cross-platform, the Scratch CameraPlugin sounds great for future versions of Squeak or Etoys, except that it may possibly be released under the Scratch or Scratch source licenses, which forbid commercial use. Anyone know if that is true?

3 3

[4.1] How do I change the screen background?
by Hannes Hirzel 22 Apr '10

22 Apr '10

Hello How do I change the screen background? I was searching for 'background' 'screen' 'world' in the preferences browser but did not find anything. Nothing in the 'Extras' menu either. So it must be a code snippet, which one? Hannes

3 2

[4.1] How do I copy the stack trace to the clipboard?
by Hannes Hirzel 22 Apr '10

22 Apr '10

Hello I want to copy the message list in the debugger window to the clipboard. There used to be a menu entry I think, but I can't find it anymore. Any suggestions? Hannes

2 1

[4.1] How do I use ToolBuilder to construct a three pane browser?
by Hannes Hirzel 20 Apr '10

20 Apr '10

Hello I would like to construct a three pane browser to inspect a dictionary of dictionaries (see data structure example code below). How do I do this using the ToolBuilder? I would like to learn to use it. The class comment of ToolBuilder "I am a tool builder, that is an object which knows how to create concrete widgets from abstract specifications. Those specifications are used by tools which want to be able to function in diverse user interface paradigms, such as MVC, Morphic, Tweak, wxWidgets etc" What I have done so far it to construct a two pane browser for browsing a dictionary showing only the keys not the instance variables. I did this by subclassing DictionaryInspector and overriding 4 methods. (see screen shot) I assume for the Three pane browser I'd have to construct a three pane browser from scratch using ToolBuilder. myLessons := Dictionary new. myLessons at: 'lesson1' put: ((((Dictionary new at: 'section1' put: 'the string for section 1 of lesson01'; yourself) at: 'section2' put: 'the string for section 2 of lesson01'; yourself) at: 'section3' put: 'the string for section 3 of lesson01'; yourself)). myLessons at: 'lesson2' put: (((((Dictionary new at: 'section1' put: 'the string for section 1 of lesson2'; yourself) at: 'section2' put: 'the string for section 2 of lesson2'; yourself) at: 'section3' put: 'the string for section 3 of lesson2'; yourself)) at: 'section4' put: 'the string for section 4 of lesson2'; yourself). myLessons at: 'lesson3' put: ((((Dictionary new at: 'section1' put: 'the string for section 1 of lesson3'; yourself) at: 'section2' put: 'the string for section 2 of lesson3'; yourself) at: 'section3' put: 'the string for section 3 of lesson3'; yourself)). myLessons explore Thank you for suggestions/hints or maybe just the answer in advance. For me this is an example for constructing more complex things. Hannes

2 5

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

Beginners April 2010