Make scrollBackingStore cross-platform.

• Component: Platform
• Status: RESOLVED FIXED

[Dave Hyatt]

Make scrollBackingStore cross-platform.

[Dave Hyatt]

Created attachment 24028 [details]
Patch

[Sam Weinig]

Comment on attachment 24028 [details]
Patch

+    virtual void scroll(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect) { }
There should not be the "= false"

+    if (canBlitOnScroll()) // The main frame can just blit the WebView window
+       // FIXME: Find a way to blit subframes without blitting overlapping content
+       hostWindow()->scroll(-scrollDelta, scrollViewRect, clipRect);
+    else 
+       // We need to go ahead and repaint the entire backing store.  Do it now before moving the
+       // plugins.
+       hostWindow()->repaint(updateRect, true, false, true); // Invalidate the backing store and repaint it synchronously
This if-else needs braces as the statements + comments are more than 1 line.

r=me

[Dave Hyatt]

Fixed in r37204.