Am 07.12.2008, 20:22 Uhr, schrieb Marcos Duarte <[EMAIL PROTECTED]>:
> I am observing an unstable behavior of FloatCanvas2 (FC2) when I
> manually change the size of the window up to a point where the canvas
> itself disappear.
> After I resize the window again my program (which has some mouse
> drawing and image showing) stops to work: the stuff I draw does not
> appear on the screen anymore.
>
> For example, run the SimpleLineDrawer example in the demo folder of
> FC2, minimize the window until the canvas disappear, release the
> mouse, and resize the window again. You should see that the lines
> can't be drawn anymore.
>
> I also observe a similar problem when I try to implement a
> SplitterWindow; when the width of the FC2 panel is minimized, the
> canvas simply disappear (when I click the refresh button, the image
> appears again but I still have problems with drawing stuff on the
> canvas).
>
> The examples in FloatCanvas (FC) don't show this problem. Is there any
> solution for that in FC2?
>
> By the way, there is a small typo on line 166 of navcanvas.py: it
> should be 'jpg' and not 'png' at the second condition below:
> if not (filename.lower().endswith('png') or
> filename.lower().endswith('png') or filename.lower().endswith('bmp')):
All bugs fixed in svn. Reasons were the size == (0,0) check for creating
bitmaps was not enough, you need to check each component individually. The
other bug was fixed a bit differently than you suggested, but essentially
the same.
Thanks for reporting this!
-Matthias
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