FloatQuad LayoutGeometryMap::mapToAncestor(const FloatRect& rect, const LayoutBoxModelObject* ancestor) const
{
FloatQuad result;
if (!hasFixedPositionStep() && !hasTransformStep() && !hasNonUniformStep() && (!ancestor || (m_mapping.size() && ancestor == m_mapping[0].m_layoutObject))) {
result = rect;
result.move(m_accumulatedOffset);
} else {
TransformState transformState(TransformState::ApplyTransformDirection, rect.center(), rect);
mapToAncestor(transformState, ancestor);
result = transformState.lastPlanarQuad();
}
#if ENABLE(ASSERT)
if (m_mapping.size() > 0) {
const LayoutObject* lastLayoutObject = m_mapping.last().m_layoutObject;
FloatRect layoutObjectMappedResult = lastLayoutObject->localToAncestorQuad(rect, ancestor, m_mapCoordinatesFlags).boundingBox();
// Inspector creates layoutObjects with negative width <https://bugs.webkit.org/show_bug.cgi?id=87194>.
// Taking FloatQuad bounds avoids spurious assertions because of that.
ASSERT(enclosingIntRect(layoutObjectMappedResult) == enclosingIntRect(result.boundingBox())
|| layoutObjectMappedResult.mayNotHaveExactIntRectRepresentation()
|| result.boundingBox().mayNotHaveExactIntRectRepresentation());
}
#endif
return result;
}
