void RenderStyle::applyTransform(TransformationMatrix& transform, const IntSize& borderBoxSize, bool includeTransformOrigin) const
{
// transform-origin brackets the transform with translate operations.
// Optimize for the case where the only transform is a translation, since the transform-origin is irrelevant
// in that case.
bool applyTransformOrigin = false;
unsigned s = rareNonInheritedData->m_transform->m_operations.operations().size();
unsigned i;
if (includeTransformOrigin) {
for (i = 0; i < s; i++) {
TransformOperation::OperationType type = rareNonInheritedData->m_transform->m_operations.operations()[i]->getOperationType();
if (type != TransformOperation::TRANSLATE_X &&
type != TransformOperation::TRANSLATE_Y &&
type != TransformOperation::TRANSLATE) {
applyTransformOrigin = true;
break;
}
}
}
if (applyTransformOrigin)
transform.translate(transformOriginX().calcFloatValue(borderBoxSize.width()), transformOriginY().calcFloatValue(borderBoxSize.height()));
for (i = 0; i < s; i++)
rareNonInheritedData->m_transform->m_operations.operations()[i]->apply(transform, borderBoxSize);
if (applyTransformOrigin)
transform.translate(-transformOriginX().calcFloatValue(borderBoxSize.width()), -transformOriginY().calcFloatValue(borderBoxSize.height()));
}
void RenderStyle::applyTransform(TransformationMatrix& transform, const FloatRect& boundingBox, ApplyTransformOrigin applyOrigin) const
{
const Vector<RefPtr<TransformOperation> >& transformOperations = rareNonInheritedData->m_transform->m_operations.operations();
bool applyTransformOrigin = requireTransformOrigin(transformOperations, applyOrigin);
float offsetX = transformOriginX().type() == Percent ? boundingBox.x() : 0;
float offsetY = transformOriginY().type() == Percent ? boundingBox.y() : 0;
if (applyTransformOrigin) {
transform.translate3d(floatValueForLength(transformOriginX(), boundingBox.width()) + offsetX,
floatValueForLength(transformOriginY(), boundingBox.height()) + offsetY,
transformOriginZ());
}
unsigned size = transformOperations.size();
for (unsigned i = 0; i < size; ++i)
transformOperations[i]->apply(transform, boundingBox.size());
if (applyTransformOrigin) {
transform.translate3d(-floatValueForLength(transformOriginX(), boundingBox.width()) - offsetX,
-floatValueForLength(transformOriginY(), boundingBox.height()) - offsetY,
-transformOriginZ());
}
}
