Add ability to do an unconstrained scroll on a ScrollView
https://bugs.webkit.org/show_bug.cgi?id=53249
Reviewed by Dave Hyatt.
* platform/ScrollView.cpp:
(WebCore::ScrollView::ScrollView):
Initialize m_constrainsScrollingToContentEdge to true.
(WebCore::ScrollView::setScrollOffset):
Only constrain the offset if the m_constrainsScrollingToContentEdge is set.
(WebCore::ScrollView::updateScrollbars):
Simplify expression converting an IntSize to an IntPoint.
(WebCore::ScrollView::paint):
Paint the overhang if there is any.
(WebCore::ScrollView::calculateOverhangAreasForPainting):
Calculate the overhang in viewport coordinates for painting.
* platform/ScrollView.h:
(WebCore::ScrollView::constrainsScrollingToContentEdge):
(WebCore::ScrollView::setConstrainsScrollingToContentEdge):
Add bit to control whether the scroll position should be constrained
to the content edge when set.
* platform/ScrollbarThemeComposite.cpp:
(WebCore::usedTotalSize):
(WebCore::ScrollbarThemeComposite::thumbPosition):
(WebCore::ScrollbarThemeComposite::thumbLength):
* platform/mac/ScrollbarThemeMac.mm:
(WebCore::ScrollbarThemeMac::paint):
Improve calculations of thumb size and position to take overhang into account.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@76831 268f45cc-cd09-0410-ab3c-d52691b4dbfc
5 files changed
