2008-12-06 Simon Fraser <simon.fraser@apple.com>
Reviewed by Dave Hyatt
https://bugs.webkit.org/show_bug.cgi?id=15671
Fix caret rendering to behave correctly with transforms:
* Rename caretRect() methods to localCaretRect() and
absoluteCaretBounds() as appropriate
* Fix localCaretRect() methods to return a rect in the
appropriate coordinates.
* Pass tx, ty down through the paintCaret() methods, after fixing them
up to account for differences between contents coords, and renderer-local
coords (via RenderBlock::offsetForContents()).
* Remove m_caretPositionOnLayout from SelectionController, and instead
call invalidateSelection() from RenderLayer::scrollToOffset(), because
we can no longer assume simple x/y offsets from scrolling with transforms.
* Move the logic to compute which RenderObject actually paints the caret into
SelectionController::caretRenderer(), rather than having it in RenderBlock.
* SelectionController now computes and caches a local caret rect. For invalidation,
it computes the absolute bounds of that (possibly transformed) local rect.
The local rect is computed in the coordinate system of the RenderObject that
will paint the caret (this may require offsetting from the actual renderer
at the start of the selection).
* Fix LayoutState(RenderObject* root) to take transforms into account
* Make offsetFromContainer() a virtual method on RenderObject, and implement
the RenderObject version. It's used to map from selection start renderer
to caret renderer.
Test: fast/transforms/transformed-caret.html
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@39069 268f45cc-cd09-0410-ab3c-d52691b4dbfc
41 files changed
