Remove exposedRect from TileController

[Antti Koivisto]

Having two separate visible rectangles is confusing. We should compute one on higher level.

[Antti Koivisto]

Created attachment 228873 [details]
patch

[Simon Fraser (smfr)]

Comment on attachment 228873 [details]
patch

View in context: https://bugs.webkit.org/attachment.cgi?id=228873&action=review

> Source/WebCore/platform/graphics/TiledBacking.h:53
> +    virtual void setTiledScrollingIndicatorPosition(const FloatPoint&) = 0;

Why doesn't this happen automatically when tiles are updated? Don't we have enough data in TileController to choose a good position?

[Tim Horton]

Comment on attachment 228873 [details]
patch

View in context: https://bugs.webkit.org/attachment.cgi?id=228873&action=review

> Source/WebKit2/WebProcess/WebPage/mac/TiledCoreAnimationDrawingArea.mm:454
> +    for (const auto& layer : m_pageOverlayLayers.values())
> +        layer->flushCompositingState(m_scrolledExposedRect);

Do we want to flush these right away? Seems like we should just do this at flush time. In any case, I'm upending the overlay code in https://bugs.webkit.org/show_bug.cgi?id=131353 so I will sort it out.

[Antti Koivisto]

(In reply to comment #2)
> (From update of attachment 228873 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=228873&action=review
> 
> > Source/WebCore/platform/graphics/TiledBacking.h:53
> > +    virtual void setTiledScrollingIndicatorPosition(const FloatPoint&) = 0;
> 
> Why doesn't this happen automatically when tiles are updated? Don't we have enough data in TileController to choose a good position?

I really just punted figuring it out in this patch.

[Tim Horton]

http://trac.webkit.org/changeset/166958