Hi Chris
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>> I am trying to redraw the canvas but without zooming to the BB. Just
>> forcing a draw mucks up my drawing scale
>
> That shouldn't happen. FloatCanvas.Draw() should jsut re-draw, and not
> mess with the scale or anything -- where are you calling it?
To clarify, the redraw occurs but the screen centre moves to a different
location on the draw. This is how I call it
client.Canvas.ClearAll()
.... work a few objects to be drawn to the canvas
Stick them in a paint list (plist)
for p in plist:
self.dl_AddObjectToCanvas(client,p[2],p[3])
client.Canvas.Draw(True)
p[2] and p[3] are args and kwargs for each object on the canvas.
Because it is a complete redraw of the canvas do I also need to propagate
a centre screen parameter ? I don't want to use zoom to BB because I may be
doing a close in edit when I cause the Draw to occur, by that I mean that I
don't want to have to keep zooming back into the working area every time I
do a change.
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>> and refresh on it’s own gives me a black canvas.
>
> hmm. that's a bit odd too. Refresh() should just re-blit the existing
> buffer.
Oops - my mistake I wasn't doing a Draw or zoom to BB prior to using
refresh.
Thanks in advance
- David
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