rectangles, or cavases, or ... ? under Tkinter

Alan G Isaac alan.isaac at gmail.com
Tue Apr 21 05:46:52 CEST 2009


> On Apr 20, 5:29 pm, Alan G Isaac <alan.is... at gmail.com> wrote:
>> I need to display many (e.e., 2000) small squares whose colors are udpated
>> each time a computation is complete.
>>
>> One approach is to put rectangles on a single canvas.
>> Another approach is to put many canvases in a single frame.
>> Another approach is to create an image each iteration,
>> which is placed on a canvas.
>> Other?
>>
>> Are there obvious considerations in the choice?
>> (Right now I do not need to interact with the squares,
>> but in the future I may need to.)




On 4/20/2009 5:52 PM FogleBird apparently wrote:
> First of all, what GUI toolkit are you using?

Tkinter.  (Sorry; I meant to include that in the subject line.



> Secondly, in wxPython I would subclass wx.Panel and handle the
> EVT_PAINT event to just draw the rectangles.  Generally I render to an
> off-screen DC and just blit that in the paint event.

I'm guessing that approach will be fastest.


> What kind of frame rate do you need?

20fps or less.
(Actually, at the moment, much less.)

Thanks,
Alan




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