nsIntRegion
LayerPropertiesBase::ComputeDifferences(Layer* aRoot, NotifySubDocInvalidationFunc aCallback,
bool* aGeometryChanged = nullptr)
{
NS_ASSERTION(aRoot, "Must have a layer tree to compare against!");
if (mLayer != aRoot) {
if (aCallback) {
NotifySubdocumentInvalidationRecursive(aRoot, aCallback);
} else {
ClearInvalidations(aRoot);
}
IntRect result = TransformRect(aRoot->GetVisibleRegion().GetBounds(),
aRoot->GetLocalTransform());
result = result.Union(OldTransformedBounds());
if (aGeometryChanged != nullptr) {
*aGeometryChanged = true;
}
return result;
} else {
bool geometryChanged = (aGeometryChanged != nullptr) ? *aGeometryChanged : false;
nsIntRegion invalid = ComputeChange(aCallback, geometryChanged);
if (aGeometryChanged != nullptr) {
*aGeometryChanged = geometryChanged;
}
return invalid;
}
}
nsIntRect
LayerPropertiesBase::ComputeDifferences(Layer* aRoot, NotifySubDocInvalidationFunc aCallback)
{
NS_ASSERTION(aRoot, "Must have a layer tree to compare against!");
if (mLayer != aRoot) {
if (aCallback) {
NotifySubdocumentInvalidationRecursive(aRoot, aCallback);
} else {
ClearInvalidations(aRoot);
}
nsIntRect result = TransformRect(aRoot->GetVisibleRegion().GetBounds(), aRoot->GetTransform());
result = result.Union(OldTransformedBounds());
return result;
} else {
return ComputeChange(aCallback);
}
}
