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Bug 1111995 - Clip buttons to their border area for event hit testing. r=roc

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This commit is contained in:
Mats Palmgren 2014-12-20 20:19:12 +00:00
parent aac41f8e45
commit ad530d745a
1 changed files with 12 additions and 1 deletions
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13
layout/forms/nsHTMLButtonControlFrame.cpp
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@ -96,6 +96,17 @@ nsHTMLButtonControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
// Clip to our border area for event hit testing.
Maybe<DisplayListClipState::AutoSaveRestore> eventClipState;
const bool isForEventDelivery = aBuilder->IsForEventDelivery();
if (isForEventDelivery) {
eventClipState.emplace(aBuilder);
nsRect rect(aBuilder->ToReferenceFrame(this), GetSize());
nscoord radii[8];
bool hasRadii = GetBorderRadii(radii);
eventClipState->ClipContainingBlockDescendants(rect, hasRadii ? radii : nullptr);
}
nsDisplayList onTop;
if (IsVisibleForPainting(aBuilder)) {
mRenderer.DisplayButton(aBuilder, aLists.BorderBackground(), &onTop);
@ -104,7 +115,7 @@ nsHTMLButtonControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
nsDisplayListCollection set;
// Do not allow the child subtree to receive events.
if (!aBuilder->IsForEventDelivery()) {
if (!isForEventDelivery) {
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
if (IsInput() || StyleDisplay()->mOverflowX != NS_STYLE_OVERFLOW_VISIBLE) {