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Unified Diff: cc/trees/layer_tree_host_common_unittest.cc

Issue 12552004: Support bottom-right anchored fixed-position elements during a pinch gesture (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: forgot to save the comments. sorry. :( Created 7 years, 9 months ago
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Index: cc/trees/layer_tree_host_common_unittest.cc
diff --git a/cc/trees/layer_tree_host_common_unittest.cc b/cc/trees/layer_tree_host_common_unittest.cc
index 595e08c70237a90ae1e9a942455c80f011c8479a..1c686f39dc62c6512292e30f7caccf4aefcca175 100644
--- a/cc/trees/layer_tree_host_common_unittest.cc
+++ b/cc/trees/layer_tree_host_common_unittest.cc
@@ -148,55 +148,6 @@ void ExecuteCalculateDrawProperties(LayerType* root_layer,
root_layer, device_scale_factor, page_scale_factor, false);
}
-scoped_ptr<LayerImpl> CreateTreeForFixedPositionTests(
- LayerTreeHostImpl* host_impl) {
- scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl->active_tree(), 1);
- scoped_ptr<LayerImpl> child = LayerImpl::Create(host_impl->active_tree(), 2);
- scoped_ptr<LayerImpl> grand_child =
- LayerImpl::Create(host_impl->active_tree(), 3);
- scoped_ptr<LayerImpl> great_grand_child =
- LayerImpl::Create(host_impl->active_tree(), 4);
-
- gfx::Transform IdentityMatrix;
- gfx::PointF anchor;
- gfx::PointF position;
- gfx::Size bounds(100, 100);
- SetLayerPropertiesForTesting(root.get(),
- IdentityMatrix,
- IdentityMatrix,
- anchor,
- position,
- bounds,
- false);
- SetLayerPropertiesForTesting(child.get(),
- IdentityMatrix,
- IdentityMatrix,
- anchor,
- position,
- bounds,
- false);
- SetLayerPropertiesForTesting(grand_child.get(),
- IdentityMatrix,
- IdentityMatrix,
- anchor,
- position,
- bounds,
- false);
- SetLayerPropertiesForTesting(great_grand_child.get(),
- IdentityMatrix,
- IdentityMatrix,
- anchor,
- position,
- bounds,
- false);
-
- grand_child->AddChild(great_grand_child.Pass());
- child->AddChild(grand_child.Pass());
- root->AddChild(child.Pass());
-
- return root.Pass();
-}
-
class LayerWithForcedDrawsContent : public Layer {
public:
LayerWithForcedDrawsContent() : Layer() {}
@@ -1684,699 +1635,6 @@ TEST(LayerTreeHostCommonTest, ForceRenderSurface) {
EXPECT_EQ(1U, render_surface_layer_list.size());
}
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerWithDirectContainer) {
- // This test checks for correct scroll compensation when the fixed-position
- // container is the direct parent of the fixed-position layer.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
-
- child->SetIsContainerForFixedPositionLayers(true);
- grand_child->SetFixedToContainerLayer(true);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_child_transform;
- gfx::Transform expected_grand_child_transform = expected_child_transform;
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-
- // Case 2: scroll delta of 10, 10
- child->SetScrollDelta(gfx::Vector2d(10, 10));
- ExecuteCalculateDrawProperties(root.get());
-
- // Here the child is affected by scroll delta, but the fixed position
- // grand_child should not be affected.
- expected_child_transform.MakeIdentity();
- expected_child_transform.Translate(-10.0, -10.0);
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerWithTransformedDirectContainer) {
- // This test checks for correct scroll compensation when the fixed-position
- // container is the direct parent of the fixed-position layer, but that
- // container is transformed. In this case, the fixed position element
- // inherits the container's transform, but the scroll delta that has to be
- // undone should not be affected by that transform.
- //
- // gfx::Transforms are in general non-commutative; using something like a
- // non-uniform scale helps to verify that translations and non-uniform scales
- // are applied in the correct order.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
-
- // This scale will cause child and grand_child to be effectively 200 x 800
- // with respect to the render target.
- gfx::Transform non_uniform_scale;
- non_uniform_scale.Scale(2.0, 8.0);
- child->SetTransform(non_uniform_scale);
-
- child->SetIsContainerForFixedPositionLayers(true);
- grand_child->SetFixedToContainerLayer(true);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_child_transform;
- expected_child_transform.PreconcatTransform(non_uniform_scale);
-
- gfx::Transform expected_grand_child_transform = expected_child_transform;
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-
- // Case 2: scroll delta of 10, 20
- child->SetScrollDelta(gfx::Vector2d(10, 20));
- ExecuteCalculateDrawProperties(root.get());
-
- // The child should be affected by scroll delta, but the fixed position
- // grand_child should not be affected.
- expected_child_transform.MakeIdentity();
- expected_child_transform.Translate(-10.0, -20.0); // scroll delta
- expected_child_transform.PreconcatTransform(non_uniform_scale);
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerWithDistantContainer) {
- // This test checks for correct scroll compensation when the fixed-position
- // container is NOT the direct parent of the fixed-position layer.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
- LayerImpl* great_grand_child = grand_child->children()[0];
-
- child->SetIsContainerForFixedPositionLayers(true);
- grand_child->SetPosition(gfx::PointF(8.f, 6.f));
- great_grand_child->SetFixedToContainerLayer(true);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_child_transform;
- gfx::Transform expected_grand_child_transform;
- expected_grand_child_transform.Translate(8.0, 6.0);
-
- gfx::Transform expected_great_grand_child_transform =
- expected_grand_child_transform;
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
-
- // Case 2: scroll delta of 10, 10
- child->SetScrollDelta(gfx::Vector2d(10, 10));
- ExecuteCalculateDrawProperties(root.get());
-
- // Here the child and grand_child are affected by scroll delta, but the fixed
- // position great_grand_child should not be affected.
- expected_child_transform.MakeIdentity();
- expected_child_transform.Translate(-10.0, -10.0);
- expected_grand_child_transform.MakeIdentity();
- expected_grand_child_transform.Translate(-2.0, -4.0);
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerWithDistantContainerAndTransforms) {
- // This test checks for correct scroll compensation when the fixed-position
- // container is NOT the direct parent of the fixed-position layer, and the
- // hierarchy has various transforms that have to be processed in the correct
- // order.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
- LayerImpl* great_grand_child = grand_child->children()[0];
-
- gfx::Transform rotation_about_z;
- rotation_about_z.RotateAboutZAxis(90.0);
-
- child->SetIsContainerForFixedPositionLayers(true);
- child->SetTransform(rotation_about_z);
- grand_child->SetPosition(gfx::PointF(8.f, 6.f));
- grand_child->SetTransform(rotation_about_z);
- // great_grand_child is positioned upside-down with respect to the render
- // target.
- great_grand_child->SetFixedToContainerLayer(true);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_child_transform;
- expected_child_transform.PreconcatTransform(rotation_about_z);
-
- gfx::Transform expected_grand_child_transform;
- expected_grand_child_transform.PreconcatTransform(
- rotation_about_z); // child's local transform is inherited
- // translation because of position occurs before layer's local transform.
- expected_grand_child_transform.Translate(8.0, 6.0);
- expected_grand_child_transform.PreconcatTransform(
- rotation_about_z); // grand_child's local transform
-
- gfx::Transform expected_great_grand_child_transform =
- expected_grand_child_transform;
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
-
- // Case 2: scroll delta of 10, 20
- child->SetScrollDelta(gfx::Vector2d(10, 20));
- ExecuteCalculateDrawProperties(root.get());
-
- // Here the child and grand_child are affected by scroll delta, but the fixed
- // position great_grand_child should not be affected.
- expected_child_transform.MakeIdentity();
- expected_child_transform.Translate(-10.0, -20.0); // scroll delta
- expected_child_transform.PreconcatTransform(rotation_about_z);
-
- expected_grand_child_transform.MakeIdentity();
- expected_grand_child_transform.Translate(
- -10.0, -20.0); // child's scroll delta is inherited
- expected_grand_child_transform.PreconcatTransform(
- rotation_about_z); // child's local transform is inherited
- // translation because of position occurs before layer's local transform.
- expected_grand_child_transform.Translate(8.0, 6.0);
- expected_grand_child_transform.PreconcatTransform(
- rotation_about_z); // grand_child's local transform
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerWithMultipleScrollDeltas) {
- // This test checks for correct scroll compensation when the fixed-position
- // container has multiple ancestors that have nonzero scroll delta before
- // reaching the space where the layer is fixed. In this test, each scroll
- // delta occurs in a different space because of each layer's local transform.
- // This test checks for correct scroll compensation when the fixed-position
- // container is NOT the direct parent of the fixed-position layer, and the
- // hierarchy has various transforms that have to be processed in the correct
- // order.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
- LayerImpl* great_grand_child = grand_child->children()[0];
-
- gfx::Transform rotation_about_z;
- rotation_about_z.RotateAboutZAxis(90.0);
-
- child->SetIsContainerForFixedPositionLayers(true);
- child->SetTransform(rotation_about_z);
- grand_child->SetPosition(gfx::PointF(8.f, 6.f));
- grand_child->SetTransform(rotation_about_z);
- // great_grand_child is positioned upside-down with respect to the render
- // target.
- great_grand_child->SetFixedToContainerLayer(true);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_child_transform;
- expected_child_transform.PreconcatTransform(rotation_about_z);
-
- gfx::Transform expected_grand_child_transform;
- expected_grand_child_transform.PreconcatTransform(
- rotation_about_z); // child's local transform is inherited
- // translation because of position occurs before layer's local transform.
- expected_grand_child_transform.Translate(8.0, 6.0);
- expected_grand_child_transform.PreconcatTransform(
- rotation_about_z); // grand_child's local transform
-
- gfx::Transform expected_great_grand_child_transform =
- expected_grand_child_transform;
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
-
- // Case 2: scroll delta of 10, 20
- child->SetScrollDelta(gfx::Vector2d(10, 0));
- grand_child->SetScrollDelta(gfx::Vector2d(5, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- // Here the child and grand_child are affected by scroll delta, but the fixed
- // position great_grand_child should not be affected.
- expected_child_transform.MakeIdentity();
- expected_child_transform.Translate(-10.0, 0.0); // scroll delta
- expected_child_transform.PreconcatTransform(rotation_about_z);
-
- expected_grand_child_transform.MakeIdentity();
- expected_grand_child_transform.Translate(
- -10.0, 0.0); // child's scroll delta is inherited
- expected_grand_child_transform.PreconcatTransform(
- rotation_about_z); // child's local transform is inherited
- expected_grand_child_transform.Translate(-5.0,
- 0.0); // grand_child's scroll delta
- // translation because of position occurs before layer's local transform.
- expected_grand_child_transform.Translate(8.0, 6.0);
- expected_grand_child_transform.PreconcatTransform(
- rotation_about_z); // grand_child's local transform
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionWithIntermediateSurfaceAndTransforms) {
- // This test checks for correct scroll compensation when the fixed-position
- // container contributes to a different render surface than the fixed-position
- // layer. In this case, the surface draw transforms also have to be accounted
- // for when checking the scroll delta.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
- LayerImpl* great_grand_child = grand_child->children()[0];
-
- child->SetIsContainerForFixedPositionLayers(true);
- grand_child->SetPosition(gfx::PointF(8.f, 6.f));
- grand_child->SetForceRenderSurface(true);
- great_grand_child->SetFixedToContainerLayer(true);
- great_grand_child->SetDrawsContent(true);
-
- gfx::Transform rotation_about_z;
- rotation_about_z.RotateAboutZAxis(90.0);
- grand_child->SetTransform(rotation_about_z);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_child_transform;
- gfx::Transform expected_surface_draw_transform;
- expected_surface_draw_transform.Translate(8.0, 6.0);
- expected_surface_draw_transform.PreconcatTransform(rotation_about_z);
- gfx::Transform expected_grand_child_transform;
- gfx::Transform expected_great_grand_child_transform;
- ASSERT_TRUE(grand_child->render_surface());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(
- expected_surface_draw_transform,
- grand_child->render_surface()->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
-
- // Case 2: scroll delta of 10, 30
- child->SetScrollDelta(gfx::Vector2d(10, 30));
- ExecuteCalculateDrawProperties(root.get());
-
- // Here the grand_child remains unchanged, because it scrolls along with the
- // render surface, and the translation is actually in the render surface. But,
- // the fixed position great_grand_child is more awkward: its actually being
- // drawn with respect to the render surface, but it needs to remain fixed with
- // resepct to a container beyond that surface. So, the net result is that,
- // unlike previous tests where the fixed position layer's transform remains
- // unchanged, here the fixed position layer's transform explicitly contains
- // the translation that cancels out the scroll.
- expected_child_transform.MakeIdentity();
- expected_child_transform.Translate(-10.0, -30.0); // scroll delta
-
- expected_surface_draw_transform.MakeIdentity();
- expected_surface_draw_transform.Translate(-10.0, -30.0); // scroll delta
- expected_surface_draw_transform.Translate(8.0, 6.0);
- expected_surface_draw_transform.PreconcatTransform(rotation_about_z);
-
- // The rotation and its inverse are needed to place the scroll delta
- // compensation in the correct space. This test will fail if the
- // rotation/inverse are backwards, too, so it requires perfect order of
- // operations.
- expected_great_grand_child_transform.MakeIdentity();
- expected_great_grand_child_transform.PreconcatTransform(
- Inverse(rotation_about_z));
- // explicit canceling out the scroll delta that gets embedded in the fixed
- // position layer's surface.
- expected_great_grand_child_transform.Translate(10.0, 30.0);
- expected_great_grand_child_transform.PreconcatTransform(rotation_about_z);
-
- ASSERT_TRUE(grand_child->render_surface());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(
- expected_surface_draw_transform,
- grand_child->render_surface()->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerWithMultipleIntermediateSurfaces) {
- // This test checks for correct scroll compensation when the fixed-position
- // container contributes to a different render surface than the fixed-position
- // layer, with additional render surfaces in-between. This checks that the
- // conversion to ancestor surfaces is accumulated properly in the final matrix
- // transform.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
- LayerImpl* great_grand_child = grand_child->children()[0];
-
- // Add one more layer to the test tree for this scenario.
- {
- gfx::Transform identity;
- scoped_ptr<LayerImpl> fixed_position_child =
- LayerImpl::Create(host_impl.active_tree(), 5);
- SetLayerPropertiesForTesting(fixed_position_child.get(),
- identity,
- identity,
- gfx::PointF(),
- gfx::PointF(),
- gfx::Size(100, 100),
- false);
- great_grand_child->AddChild(fixed_position_child.Pass());
- }
- LayerImpl* fixed_position_child = great_grand_child->children()[0];
-
- // Actually set up the scenario here.
- child->SetIsContainerForFixedPositionLayers(true);
- grand_child->SetPosition(gfx::PointF(8.f, 6.f));
- grand_child->SetForceRenderSurface(true);
- great_grand_child->SetPosition(gfx::PointF(40.f, 60.f));
- great_grand_child->SetForceRenderSurface(true);
- fixed_position_child->SetFixedToContainerLayer(true);
- fixed_position_child->SetDrawsContent(true);
-
- // The additional rotations, which are non-commutative with translations, help
- // to verify that we have correct order-of-operations in the final scroll
- // compensation. Note that rotating about the center of the layer ensures we
- // do not accidentally clip away layers that we want to test.
- gfx::Transform rotation_about_z;
- rotation_about_z.Translate(50.0, 50.0);
- rotation_about_z.RotateAboutZAxis(90.0);
- rotation_about_z.Translate(-50.0, -50.0);
- grand_child->SetTransform(rotation_about_z);
- great_grand_child->SetTransform(rotation_about_z);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_child_transform;
-
- gfx::Transform expected_grand_child_surface_draw_transform;
- expected_grand_child_surface_draw_transform.Translate(8.0, 6.0);
- expected_grand_child_surface_draw_transform.PreconcatTransform(
- rotation_about_z);
-
- gfx::Transform expected_grand_child_transform;
-
- gfx::Transform expected_great_grand_child_surface_draw_transform;
- expected_great_grand_child_surface_draw_transform.Translate(40.0, 60.0);
- expected_great_grand_child_surface_draw_transform.PreconcatTransform(
- rotation_about_z);
-
- gfx::Transform expected_great_grand_child_transform;
-
- gfx::Transform expected_fixed_position_child_transform;
-
- ASSERT_TRUE(grand_child->render_surface());
- ASSERT_TRUE(great_grand_child->render_surface());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(
- expected_grand_child_surface_draw_transform,
- grand_child->render_surface()->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(
- expected_great_grand_child_surface_draw_transform,
- great_grand_child->render_surface()->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_fixed_position_child_transform,
- fixed_position_child->draw_transform());
-
- // Case 2: scroll delta of 10, 30
- child->SetScrollDelta(gfx::Vector2d(10, 30));
- ExecuteCalculateDrawProperties(root.get());
-
- expected_child_transform.MakeIdentity();
- expected_child_transform.Translate(-10.0, -30.0); // scroll delta
-
- expected_grand_child_surface_draw_transform.MakeIdentity();
- expected_grand_child_surface_draw_transform.Translate(-10.0,
- -30.0); // scroll delta
- expected_grand_child_surface_draw_transform.Translate(8.0, 6.0);
- expected_grand_child_surface_draw_transform.PreconcatTransform(
- rotation_about_z);
-
- // grand_child, great_grand_child, and great_grand_child's surface are not
- // expected to change, since they are all not fixed, and they are all drawn
- // with respect to grand_child's surface that already has the scroll delta
- // accounted for.
-
- // But the great-great grandchild, "fixed_position_child", should have a
- // transform that explicitly cancels out the scroll delta. The expected
- // transform is: compound_draw_transform.Inverse() * translate(positive scroll
- // delta) * compound_origin_transform from great_grand_childSurface's origin
- // to the root surface.
- gfx::Transform compound_draw_transform;
- compound_draw_transform.Translate(8.0,
- 6.0); // origin translation of grand_child
- compound_draw_transform.PreconcatTransform(
- rotation_about_z); // rotation of grand_child
- compound_draw_transform.Translate(
- 40.0, 60.0); // origin translation of great_grand_child
- compound_draw_transform.PreconcatTransform(
- rotation_about_z); // rotation of great_grand_child
-
- expected_fixed_position_child_transform.MakeIdentity();
- expected_fixed_position_child_transform.PreconcatTransform(
- Inverse(compound_draw_transform));
- // explicit canceling out the scroll delta that gets embedded in the fixed
- // position layer's surface.
- expected_fixed_position_child_transform.Translate(10.0, 30.0);
- expected_fixed_position_child_transform.PreconcatTransform(
- compound_draw_transform);
-
- ASSERT_TRUE(grand_child->render_surface());
- ASSERT_TRUE(great_grand_child->render_surface());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(
- expected_grand_child_surface_draw_transform,
- grand_child->render_surface()->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(
- expected_great_grand_child_surface_draw_transform,
- great_grand_child->render_surface()->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_great_grand_child_transform,
- great_grand_child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_fixed_position_child_transform,
- fixed_position_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerWithContainerLayerThatHasSurface) {
- // This test checks for correct scroll compensation when the fixed-position
- // container itself has a render surface. In this case, the container layer
- // should be treated like a layer that contributes to a render target, and
- // that render target is completely irrelevant; it should not affect the
- // scroll compensation.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
-
- child->SetIsContainerForFixedPositionLayers(true);
- child->SetForceRenderSurface(true);
- grand_child->SetFixedToContainerLayer(true);
- grand_child->SetDrawsContent(true);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_surface_draw_transform;
- expected_surface_draw_transform.Translate(0.0, 0.0);
- gfx::Transform expected_child_transform;
- gfx::Transform expected_grand_child_transform;
- ASSERT_TRUE(child->render_surface());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_surface_draw_transform,
- child->render_surface()->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-
- // Case 2: scroll delta of 10, 10
- child->SetScrollDelta(gfx::Vector2d(10, 10));
- ExecuteCalculateDrawProperties(root.get());
-
- // The surface is translated by scroll delta, the child transform doesn't
- // change because it scrolls along with the surface, but the fixed position
- // grand_child needs to compensate for the scroll translation.
- expected_surface_draw_transform.MakeIdentity();
- expected_surface_draw_transform.Translate(-10.0, -10.0);
- expected_grand_child_transform.MakeIdentity();
- expected_grand_child_transform.Translate(10.0, 10.0);
-
- ASSERT_TRUE(child->render_surface());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_surface_draw_transform,
- child->render_surface()->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerThatIsAlsoFixedPositionContainer) {
- // This test checks the scenario where a fixed-position layer also happens to
- // be a container itself for a descendant fixed position layer. In particular,
- // the layer should not accidentally be fixed to itself.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
-
- child->SetIsContainerForFixedPositionLayers(true);
- grand_child->SetFixedToContainerLayer(true);
-
- // This should not confuse the grand_child. If correct, the grand_child would
- // still be considered fixed to its container (i.e. "child").
- grand_child->SetIsContainerForFixedPositionLayers(true);
-
- // Case 1: scroll delta of 0, 0
- child->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform expected_child_transform;
- gfx::Transform expected_grand_child_transform;
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-
- // Case 2: scroll delta of 10, 10
- child->SetScrollDelta(gfx::Vector2d(10, 10));
- ExecuteCalculateDrawProperties(root.get());
-
- // Here the child is affected by scroll delta, but the fixed position
- // grand_child should not be affected.
- expected_child_transform.MakeIdentity();
- expected_child_transform.Translate(-10.0, -10.0);
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_child_transform,
- child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-}
-
-TEST(LayerTreeHostCommonTest,
- ScrollCompensationForFixedPositionLayerThatHasNoContainer) {
- // This test checks scroll compensation when a fixed-position layer does not
- // find any ancestor that is a "containerForFixedPositionLayers". In this
- // situation, the layer should be fixed to the viewport -- not the root_layer,
- // which may have transforms of its own.
- FakeImplProxy proxy;
- FakeLayerTreeHostImpl host_impl(&proxy);
- scoped_ptr<LayerImpl> root = CreateTreeForFixedPositionTests(&host_impl);
- LayerImpl* child = root->children()[0];
- LayerImpl* grand_child = child->children()[0];
-
- gfx::Transform rotation_by_z;
- rotation_by_z.RotateAboutZAxis(90.0);
-
- root->SetTransform(rotation_by_z);
- grand_child->SetFixedToContainerLayer(true);
-
- // Case 1: root scroll delta of 0, 0
- root->SetScrollDelta(gfx::Vector2d(0, 0));
- ExecuteCalculateDrawProperties(root.get());
-
- gfx::Transform identity_matrix;
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(identity_matrix, child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(identity_matrix,
- grand_child->draw_transform());
-
- // Case 2: root scroll delta of 10, 10
- root->SetScrollDelta(gfx::Vector2d(10, 20));
- ExecuteCalculateDrawProperties(root.get());
-
- // The child is affected by scroll delta, but it is already implcitly
- // accounted for by the child's target surface (i.e. the root render surface).
- // The grand_child is not affected by the scroll delta, so its draw transform
- // needs to explicitly inverse-compensate for the scroll that's embedded in
- // the target surface.
- gfx::Transform expected_grand_child_transform;
- expected_grand_child_transform.PreconcatTransform(Inverse(rotation_by_z));
- // explicit cancelling out the scroll delta that gets embedded in the fixed
- // position layer's surface.
- expected_grand_child_transform.Translate(10.0, 20.0);
- expected_grand_child_transform.PreconcatTransform(rotation_by_z);
-
- EXPECT_TRANSFORMATION_MATRIX_EQ(identity_matrix, child->draw_transform());
- EXPECT_TRANSFORMATION_MATRIX_EQ(expected_grand_child_transform,
- grand_child->draw_transform());
-}
-
TEST(LayerTreeHostCommonTest, ClipRectCullsRenderSurfaces) {
// The entire subtree of layers that are outside the clip rect should be
// culled away, and should not affect the render_surface_layer_list.
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