void PaintPropertyTreeBuilder::updatePerspective(
const LayoutObject& object,
PaintPropertyTreeBuilderContext& context) {
const ComputedStyle& style = object.styleRef();
if (object.isBox() && style.hasPerspective()) {
// The perspective node must not flatten (else nothing will get
// perspective), but it should still extend the rendering context as
// most transform nodes do.
TransformationMatrix matrix =
TransformationMatrix().applyPerspective(style.perspective());
FloatPoint3D origin = perspectiveOrigin(toLayoutBox(object)) +
toLayoutSize(context.current.paintOffset);
object.getMutableForPainting().ensurePaintProperties().updatePerspective(
context.current.transform, matrix, origin,
context.current.shouldFlattenInheritedTransform,
context.current.renderingContextID);
} else {
if (auto* properties = object.getMutableForPainting().paintProperties())
properties->clearPerspective();
}
const auto* properties = object.paintProperties();
if (properties && properties->perspective()) {
context.current.transform = properties->perspective();
context.current.shouldFlattenInheritedTransform = false;
}
}
static PassRefPtr<TransformPaintPropertyNode> createPerspectiveIfNeeded(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
{
const ComputedStyle& style = object.styleRef();
if (!object.isBox() || !style.hasPerspective())
return nullptr;
RefPtr<TransformPaintPropertyNode> newTransformNodeForPerspective = TransformPaintPropertyNode::create(
TransformationMatrix().applyPerspective(style.perspective()),
perspectiveOrigin(toLayoutBox(object)) + toLayoutSize(context.paintOffset), context.currentTransform);
context.currentTransform = newTransformNodeForPerspective.get();
return newTransformNodeForPerspective.release();
}
void PaintPropertyTreeBuilder::updatePerspective(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
{
const ComputedStyle& style = object.styleRef();
if (!object.isBox() || !style.hasPerspective())
return;
RefPtr<TransformPaintPropertyNode> perspective = TransformPaintPropertyNode::create(
TransformationMatrix().applyPerspective(style.perspective()),
perspectiveOrigin(toLayoutBox(object)) + toLayoutSize(context.paintOffset),
context.currentTransform);
context.currentTransform = perspective.get();
object.getMutableForPainting().ensureObjectPaintProperties().setPerspective(perspective.release());
}
