[Webkit-unassigned] [Bug 78872] [chromium] ScrollbarLayerChromium/CCScrollbarLayerImpl for CC-side scrollbar painting

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=78872





--- Comment #22 from Tien-Ren Chen <trchen at chromium.org>  2012-03-01 18:08:52 PST ---
(In reply to comment #20)
> (In reply to comment #19)
> > > Source/WebCore/platform/graphics/chromium/ScrollbarLayerChromium.h:48
> > > +    RefPtr<Scrollbar> m_scrollbar;
> > 
> > this seems very wrong. the layer shouldn't have any ownership concern with the scrollbar.
> 
> the alternative would be copying everything when creating ScrollbarLayerChromium.

I find this won't work. m_visibleSize and m_totalSize is something very dynamic, we need to update their value on every commits.
I think we might be able to get these information from the layer data, any suggestion?

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