[Customdrawn] VMG. attn Felipe

[Giuliano Colla]

Felipe Monteiro de Carvalho ha scritto:
> 
> Good idea! Indeed GetCursorPos is not implemented for X11!
> 
> Implemented in rev 36571 =)
> 
> Now we can see the motion graphic going.
> 
Very good, as soon as I'm in a suitable platform, I'll try and evaluate. 
Each application is useful to show different areas of 
implementation/optimization.

> 
> But again: Make absolute sure that you are verifying if the window did
> not change it's size. If it did, you need to invalidate the entire
> form and rebuild the native image.
> 

There's still some issue in resizing. During resize, sometimes 
apparently it takes momentarily a wrong scanline, and the image comes 
out distorted.
Without SmartPaint you see this effect for a moment, but then the image 
is repainted, even if the resize is finished, and so it's just a blink. 
With SmartPaint if you stop resizing exactly at that moment the image is 
not repainted, and you see a distorted window. But this is more a issue 
of EvPaint than that of SmartPaint. Maybe it lacks the appropriate locks 
and it updates an image while it's being written. Must investigate further.

> But this optimization is only useful in platforms which keep sending
> us unnecessary repaint messages: X11 and Windows.

Yes it's Backend specific. But Windows and X11 sum up 95% of users!

-- 
Giuliano Colla

Whenever people agree with me, I always feel I must be wrong (O. Wilde)