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-rw-r--r--cc/trees/layer_tree_impl_unittest.cc138
1 files changed, 138 insertions, 0 deletions
diff --git a/cc/trees/layer_tree_impl_unittest.cc b/cc/trees/layer_tree_impl_unittest.cc
index 8db2b95..91bad3e 100644
--- a/cc/trees/layer_tree_impl_unittest.cc
+++ b/cc/trees/layer_tree_impl_unittest.cc
@@ -1117,6 +1117,144 @@ TEST_F(LayerTreeImplTest, HitTestingForMultipleLayersAtVaryingDepths) {
EXPECT_EQ(4, result_layer->id());
}
+TEST_F(LayerTreeImplTest, HitTestingRespectsClipParents) {
+ scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl().active_tree(), 1);
+ gfx::Transform identity_matrix;
+ gfx::Point3F transform_origin;
+ gfx::PointF position;
+ gfx::Size bounds(100, 100);
+ SetLayerPropertiesForTesting(root.get(),
+ identity_matrix,
+ transform_origin,
+ position,
+ bounds,
+ true,
+ false);
+ root->SetDrawsContent(true);
+ {
+ scoped_ptr<LayerImpl> child =
+ LayerImpl::Create(host_impl().active_tree(), 2);
+ scoped_ptr<LayerImpl> grand_child =
+ LayerImpl::Create(host_impl().active_tree(), 4);
+
+ position = gfx::PointF(10.f, 10.f);
+ bounds = gfx::Size(1, 1);
+ SetLayerPropertiesForTesting(child.get(),
+ identity_matrix,
+ transform_origin,
+ position,
+ bounds,
+ true,
+ false);
+ child->SetDrawsContent(true);
+ child->SetMasksToBounds(true);
+
+ position = gfx::PointF(0.f, 40.f);
+ bounds = gfx::Size(100, 50);
+ SetLayerPropertiesForTesting(grand_child.get(),
+ identity_matrix,
+ transform_origin,
+ position,
+ bounds,
+ true,
+ false);
+ grand_child->SetDrawsContent(true);
+ grand_child->SetForceRenderSurface(true);
+
+ // This should let |grand_child| "escape" |child|'s clip.
+ grand_child->SetClipParent(root.get());
+
+ child->AddChild(grand_child.Pass());
+ root->AddChild(child.Pass());
+ }
+
+ host_impl().SetViewportSize(root->bounds());
+ host_impl().active_tree()->SetRootLayer(root.Pass());
+ host_impl().active_tree()->UpdateDrawProperties();
+
+ gfx::Point test_point = gfx::Point(12, 52);
+ LayerImpl* result_layer =
+ host_impl().active_tree()->FindLayerThatIsHitByPoint(test_point);
+ ASSERT_TRUE(result_layer);
+ EXPECT_EQ(4, result_layer->id());
+}
+
+TEST_F(LayerTreeImplTest, HitTestingRespectsScrollParents) {
+ scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl().active_tree(), 1);
+ gfx::Transform identity_matrix;
+ gfx::Point3F transform_origin;
+ gfx::PointF position;
+ gfx::Size bounds(100, 100);
+ SetLayerPropertiesForTesting(root.get(),
+ identity_matrix,
+ transform_origin,
+ position,
+ bounds,
+ true,
+ false);
+ root->SetDrawsContent(true);
+ {
+ scoped_ptr<LayerImpl> child =
+ LayerImpl::Create(host_impl().active_tree(), 2);
+ scoped_ptr<LayerImpl> scroll_child =
+ LayerImpl::Create(host_impl().active_tree(), 3);
+ scoped_ptr<LayerImpl> grand_child =
+ LayerImpl::Create(host_impl().active_tree(), 4);
+
+ position = gfx::PointF(10.f, 10.f);
+ bounds = gfx::Size(1, 1);
+ SetLayerPropertiesForTesting(child.get(),
+ identity_matrix,
+ transform_origin,
+ position,
+ bounds,
+ true,
+ false);
+ child->SetDrawsContent(true);
+ child->SetMasksToBounds(true);
+
+ position = gfx::PointF();
+ bounds = gfx::Size(200, 200);
+ SetLayerPropertiesForTesting(scroll_child.get(),
+ identity_matrix,
+ transform_origin,
+ position,
+ bounds,
+ true,
+ false);
+ scroll_child->SetDrawsContent(true);
+
+ // This should cause scroll child and its descendants to be affected by
+ // |child|'s clip.
+ scroll_child->SetScrollParent(child.get());
+
+ SetLayerPropertiesForTesting(grand_child.get(),
+ identity_matrix,
+ transform_origin,
+ position,
+ bounds,
+ true,
+ false);
+ grand_child->SetDrawsContent(true);
+ grand_child->SetForceRenderSurface(true);
+
+ scroll_child->AddChild(grand_child.Pass());
+ root->AddChild(scroll_child.Pass());
+ root->AddChild(child.Pass());
+ }
+
+ host_impl().SetViewportSize(root->bounds());
+ host_impl().active_tree()->SetRootLayer(root.Pass());
+ host_impl().active_tree()->UpdateDrawProperties();
+
+ gfx::Point test_point = gfx::Point(12, 52);
+ LayerImpl* result_layer =
+ host_impl().active_tree()->FindLayerThatIsHitByPoint(test_point);
+ // The |test_point| should have been clipped away by |child|, the scroll
+ // parent, so the only thing that should be hit is |root|.
+ ASSERT_TRUE(result_layer);
+ ASSERT_EQ(1, result_layer->id());
+}
TEST_F(LayerTreeImplTest, HitTestingForMultipleLayerLists) {
//
// The geometry is set up similarly to the previous case, but