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Bug 969250 - Part 1: Implement scroll snapping for scrollbars (v5 Patch). r=roc

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This commit is contained in:
Kearwood (Kip) Gilbert
2015-03-03 17:40:00 +01:00
parent d52a16a476
commit c1456fb0f3
11 changed files with 178 additions and 69 deletions
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12
layout/xul/tree/nsTreeBodyFrame.cpp
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@@ -4200,23 +4200,29 @@ nsTreeBodyFrame::ScrollHorzInternal(const ScrollParts& aParts, int32_t aPosition
}
void
nsTreeBodyFrame::ScrollByPage(nsScrollbarFrame* aScrollbar, int32_t aDirection)
nsTreeBodyFrame::ScrollByPage(nsScrollbarFrame* aScrollbar, int32_t aDirection,
nsIScrollbarMediator::ScrollSnapMode aSnap)
{
// CSS Scroll Snapping is not enabled for XUL, aSnap is ignored
MOZ_ASSERT(aScrollbar != nullptr);
ScrollByPages(aDirection);
}
void
nsTreeBodyFrame::ScrollByWhole(nsScrollbarFrame* aScrollbar, int32_t aDirection)
nsTreeBodyFrame::ScrollByWhole(nsScrollbarFrame* aScrollbar, int32_t aDirection,
nsIScrollbarMediator::ScrollSnapMode aSnap)
{
// CSS Scroll Snapping is not enabled for XUL, aSnap is ignored
MOZ_ASSERT(aScrollbar != nullptr);
int32_t newIndex = aDirection < 0 ? 0 : mTopRowIndex;
ScrollToRow(newIndex);
}
void
nsTreeBodyFrame::ScrollByLine(nsScrollbarFrame* aScrollbar, int32_t aDirection)
nsTreeBodyFrame::ScrollByLine(nsScrollbarFrame* aScrollbar, int32_t aDirection,
nsIScrollbarMediator::ScrollSnapMode aSnap)
{
// CSS Scroll Snapping is not enabled for XUL, aSnap is ignored
MOZ_ASSERT(aScrollbar != nullptr);
ScrollByLines(aDirection);
}