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Diffstat (limited to 'ui/gfx/compositor/layer.cc')
| -rw-r--r-- | ui/gfx/compositor/layer.cc | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/ui/gfx/compositor/layer.cc b/ui/gfx/compositor/layer.cc index b9b1cd3..8266bff 100644 --- a/ui/gfx/compositor/layer.cc +++ b/ui/gfx/compositor/layer.cc @@ -328,8 +328,15 @@ void Layer::RecomputeHole() { !IsApproximateMultilpleOf(degrees, 90.0f)) continue; - gfx::Rect candidate_hole = children_[i]->bounds(); - children_[i]->transform().TransformRect(&candidate_hole); + // The reason why we don't just take the bounds and apply the transform is + // that the bounds encodes a position, too, so the effective transformation + // matrix is actually different that the one reported. As well, the bounds + // will not necessarily be at the origin. + gfx::Rect candidate_hole(children_[i]->bounds_.size()); + ui::Transform transform = children_[i]->transform(); + transform.ConcatTranslate(static_cast<float>(children_[i]->bounds_.x()), + static_cast<float>(children_[i]->bounds_.y())); + transform.TransformRect(&candidate_hole); // This layer might not contain the child (e.g., a portion of the child may // be offscreen). Only the portion of the child that overlaps this layer is |