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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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13
layout/xul/nsSliderFrame.cpp
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@@ -264,7 +264,8 @@ nsSliderFrame::AttributeChanged(int32_t aNameSpaceID,
nsIScrollbarMediator* mediator = scrollbarFrame->GetScrollbarMediator();
scrollbarFrame->SetIncrementToWhole(direction);
if (mediator) {
mediator->ScrollByWhole(scrollbarFrame, direction);
mediator->ScrollByWhole(scrollbarFrame, direction,
nsIScrollbarMediator::ENABLE_SNAP);
}
}
// 'this' might be destroyed here
@@ -1153,6 +1154,14 @@ nsSliderFrame::HandleRelease(nsPresContext* aPresContext,
{
StopRepeat();
nsIFrame* scrollbar = GetScrollbar();
nsScrollbarFrame* sb = do_QueryFrame(scrollbar);
if (sb) {
nsIScrollbarMediator* m = sb->GetScrollbarMediator();
if (m) {
m->ScrollbarReleased(sb);
}
}
return NS_OK;
}
@@ -1261,7 +1270,7 @@ nsSliderFrame::PageScroll(nscoord aChange)
nsIScrollbarMediator* m = sb->GetScrollbarMediator();
sb->SetIncrementToPage(aChange);
if (m) {
m->ScrollByPage(sb, aChange);
m->ScrollByPage(sb, aChange, nsIScrollbarMediator::ENABLE_SNAP);
return;
}
}