virtual nsIntRegion ComputeChangeInternal(NotifySubDocInvalidationFunc aCallback,
bool& aGeometryChanged)
{
ImageLayer* imageLayer = static_cast<ImageLayer*>(mLayer.get());
if (!imageLayer->GetVisibleRegion().IsEqual(mVisibleRegion)) {
aGeometryChanged = true;
IntRect result = NewTransformedBounds();
result = result.Union(OldTransformedBounds());
return result;
}
ImageContainer* container = imageLayer->GetContainer();
if (mContainer != container ||
mFilter != imageLayer->GetFilter() ||
mScaleToSize != imageLayer->GetScaleToSize() ||
mScaleMode != imageLayer->GetScaleMode()) {
aGeometryChanged = true;
if (mIsMask) {
// Mask layers have an empty visible region, so we have to
// use the image size instead.
IntSize size = container->GetCurrentSize();
IntRect rect(0, 0, size.width, size.height);
return TransformRect(rect, mLayer->GetLocalTransform());
} else {
return NewTransformedBounds();
}
}
return IntRect();
}
virtual nsIntRect ComputeChangeInternal(NotifySubDocInvalidationFunc aCallback)
{
ImageLayer* image = static_cast<ImageLayer*>(mLayer);
if (!image->GetVisibleRegion().IsEqual(mVisibleRegion)) {
nsIntRect result = NewTransformedBounds();
result = result.Union(OldTransformedBounds());
return result;
}
if (mContainer != image->GetContainer() ||
mFilter != image->GetFilter() ||
mScaleToSize != image->GetScaleToSize() ||
mScaleMode != image->GetScaleMode()) {
return NewTransformedBounds();
}
return nsIntRect();
}