[Webkit-unassigned] [Bug 73920] [Qt] Tiled backing store failing to update view under certain conditions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=73920


Jocelyn Turcotte <jocelyn.turcotte at digia.com> changed:

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--- Comment #4 from Jocelyn Turcotte <jocelyn.turcotte at digia.com>  2012-10-25 07:41:34 PST ---
(From update of attachment 170646)
View in context: https://bugs.webkit.org/attachment.cgi?id=170646&action=review

> Source/WebCore/page/FrameView.cpp:2026
> +        frame()->tiledBackingStore()->removeAllTiles();

This feels quite wrong to drop all tiles just because of an issue edge tiles, the same tiles can be used between pages, and invalidate calls are responsible of triggering a refresh of the tile contents.
There is a call to tiledBackingStoreContentsRect in TiledBackingStore::createTiles that should return a different contents size for the new page. A change of that rect should be responsible of triggering a call to resizeEdgeTiles. Please check around there to fix your issue.

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