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Bug 917416 - Make App Renderframe Opaque. r=roc

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This commit is contained in:
Mason Chang 2014-02-24 10:09:55 -05:00
parent df42751df8
commit 709b458cbc
1 changed files with 13 additions and 3 deletions
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16
gfx/layers/composite/ContainerLayerComposite.cpp
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@ -55,12 +55,16 @@ static nsIntRect
GetOpaqueRect(Layer* aLayer)
{
nsIntRect result;
gfx::Matrix matrix;
bool is2D = aLayer->GetBaseTransform().Is2D(&matrix);
// Just bail if there's anything difficult to handle.
if (!aLayer->GetEffectiveTransform().IsIdentity() ||
aLayer->GetEffectiveOpacity() != 1.0f ||
aLayer->GetMaskLayer()) {
if (!is2D || aLayer->GetMaskLayer() ||
aLayer->GetEffectiveOpacity() != 1.0f ||
matrix.HasNonIntegerTranslation()) {
return result;
}
if (aLayer->GetContentFlags() & Layer::CONTENT_OPAQUE) {
result = aLayer->GetEffectiveVisibleRegion().GetLargestRectangle();
} else {
@ -72,10 +76,16 @@ GetOpaqueRect(Layer* aLayer)
result = GetOpaqueRect(refLayer->GetFirstChild());
}
}
// Translate our opaque region to cover the child
gfx::Point point = matrix.GetTranslation();
result.MoveBy(static_cast<int>(point.x), static_cast<int>(point.y));
const nsIntRect* clipRect = aLayer->GetEffectiveClipRect();
if (clipRect) {
result.IntersectRect(result, *clipRect);
}
return result;
}