[Patch] consider overflow in selection repaint rectangles

Wed Jun 2 23:28:28 CEST 2004

Hey Leo.

Yeah, we have this bug too.

It's on my list of "things to do" to rewrite selection painting so that  
it really only paints the selection rects that have changed (rather  
than repainting an enclosing containing block).

This is especially bad in current Safaris where I've implemented the  
WinIE quirk of making the <body> fill the viewport.  This quirk means  
any selection you drag inside the <body> now causes the entire viewport  
to repaint!

dave

On Jun 1, 2004, at 3:29 AM, Leo Savernik wrote:

> Hello,
>
> Blocks with an overflowWidth/overflowHeight didn't have their  
> selections
> updated appropriately. I fixed this by using  
> overflowWidth/overflowHeight in
> render_canvas.cpp's enclosingPositionedRect where necessary.
>
> I wonder if this is correct wrt to layers (overflow:scroll).
>
> I furthermore wonder if WebCore suffers from the same problem, or if  
> it solves
> the repaint issue in another way.
>
> Please see the testcase for further information.
>
> mfg
> 	Leo
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