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Copy pathlayer_tree_host_unittest_scroll.cc
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layer_tree_host_unittest_scroll.cc
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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/trees/layer_tree_host.h"
#include "base/bind.h"
#include "base/containers/contains.h"
#include "base/location.h"
#include "base/memory/weak_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "build/build_config.h"
#include "cc/animation/animation_host.h"
#include "cc/base/completion_event.h"
#include "cc/base/features.h"
#include "cc/input/main_thread_scrolling_reason.h"
#include "cc/input/scroll_elasticity_helper.h"
#include "cc/layers/layer.h"
#include "cc/layers/layer_impl.h"
#include "cc/layers/picture_layer.h"
#include "cc/test/fake_content_layer_client.h"
#include "cc/test/fake_layer_tree_host_client.h"
#include "cc/test/fake_picture_layer.h"
#include "cc/test/fake_picture_layer_impl.h"
#include "cc/test/layer_tree_test.h"
#include "cc/test/test_task_graph_runner.h"
#include "cc/test/test_ukm_recorder_factory.h"
#include "cc/trees/clip_node.h"
#include "cc/trees/effect_node.h"
#include "cc/trees/layer_tree_impl.h"
#include "cc/trees/scroll_node.h"
#include "cc/trees/single_thread_proxy.h"
#include "cc/trees/transform_node.h"
#include "components/viz/common/frame_sinks/begin_frame_source.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "ui/events/types/scroll_input_type.h"
#include "ui/gfx/geometry/point_conversions.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/gfx/geometry/test/geometry_util.h"
#include "ui/gfx/geometry/vector2d_conversions.h"
using ::testing::Mock;
using ScrollThread = cc::InputHandler::ScrollThread;
namespace cc {
namespace {
std::unique_ptr<ScrollState> BeginState(const gfx::Point& point,
const gfx::Vector2dF& delta_hint) {
ScrollStateData scroll_state_data;
scroll_state_data.is_beginning = true;
scroll_state_data.position_x = point.x();
scroll_state_data.position_y = point.y();
scroll_state_data.delta_x_hint = delta_hint.x();
scroll_state_data.delta_y_hint = delta_hint.y();
std::unique_ptr<ScrollState> scroll_state(new ScrollState(scroll_state_data));
return scroll_state;
}
std::unique_ptr<ScrollState> UpdateState(const gfx::Point& point,
const gfx::Vector2dF& delta) {
ScrollStateData scroll_state_data;
scroll_state_data.delta_x = delta.x();
scroll_state_data.delta_y = delta.y();
scroll_state_data.position_x = point.x();
scroll_state_data.position_y = point.y();
std::unique_ptr<ScrollState> scroll_state(new ScrollState(scroll_state_data));
return scroll_state;
}
class LayerTreeHostScrollTest : public LayerTreeTest, public ScrollCallbacks {
protected:
LayerTreeHostScrollTest() { SetUseLayerLists(); }
void SetupTree() override {
LayerTreeTest::SetupTree();
Layer* root_layer = layer_tree_host()->root_layer();
// Create an effective max_scroll_offset of (100, 100).
gfx::Size scroll_layer_bounds(root_layer->bounds().width() + 100,
root_layer->bounds().height() + 100);
SetupViewport(root_layer, root_layer->bounds(), scroll_layer_bounds);
layer_tree_host()->property_trees()->scroll_tree.SetScrollCallbacks(
weak_ptr_factory_.GetWeakPtr());
}
// ScrollCallbacks
void DidCompositorScroll(ElementId element_id,
const gfx::Vector2dF& scroll_offset,
const absl::optional<TargetSnapAreaElementIds>&
snap_target_ids) override {
// Simulates cc client (e.g Blink) behavior when handling impl-side scrolls.
SetScrollOffsetFromImplSide(layer_tree_host()->LayerByElementId(element_id),
scroll_offset);
if (element_id ==
layer_tree_host()->OuterViewportScrollLayerForTesting()->element_id()) {
DidScrollOuterViewport(scroll_offset);
}
if (snap_target_ids.has_value()) {
ScrollNode* scroller_node =
layer_tree_host()
->property_trees()
->scroll_tree.FindNodeFromElementId(element_id);
scroller_node->snap_container_data.value().SetTargetSnapAreaElementIds(
snap_target_ids.value());
}
}
void DidChangeScrollbarsHidden(ElementId, bool) override {}
virtual void DidScrollOuterViewport(const gfx::Vector2dF& scroll_offset) {
num_outer_viewport_scrolls_++;
}
int num_outer_viewport_scrolls_ = 0;
private:
base::WeakPtrFactory<LayerTreeHostScrollTest> weak_ptr_factory_{this};
};
class LayerTreeHostScrollTestScrollSimple : public LayerTreeHostScrollTest {
public:
LayerTreeHostScrollTestScrollSimple()
: initial_scroll_(10, 20), second_scroll_(40, 5), scroll_amount_(2, -1) {}
void BeginTest() override {
SetScrollOffset(layer_tree_host()->OuterViewportScrollLayerForTesting(),
initial_scroll_);
PostSetNeedsCommitToMainThread();
}
void UpdateLayerTreeHost() override {
Layer* scroll_layer =
layer_tree_host()->OuterViewportScrollLayerForTesting();
if (!layer_tree_host()->SourceFrameNumber()) {
EXPECT_VECTOR2DF_EQ(initial_scroll_,
GetTransformNode(scroll_layer)->scroll_offset);
} else {
EXPECT_VECTOR2DF_EQ(initial_scroll_ + scroll_amount_,
GetTransformNode(scroll_layer)->scroll_offset);
// Pretend like Javascript updated the scroll position itself.
SetScrollOffset(scroll_layer, second_scroll_);
}
}
void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
LayerImpl* root = impl->active_tree()->root_layer();
LayerImpl* scroll_layer =
impl->active_tree()->OuterViewportScrollLayerForTesting();
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollDelta(scroll_layer));
scroll_layer->SetBounds(
gfx::Size(root->bounds().width() + 100, root->bounds().height() + 100));
scroll_layer->ScrollBy(scroll_amount_);
switch (impl->active_tree()->source_frame_number()) {
case 0:
EXPECT_VECTOR2DF_EQ(initial_scroll_, ScrollOffsetBase(scroll_layer));
EXPECT_VECTOR2DF_EQ(scroll_amount_, ScrollDelta(scroll_layer));
PostSetNeedsCommitToMainThread();
break;
case 1:
EXPECT_VECTOR2DF_EQ(second_scroll_, ScrollOffsetBase(scroll_layer));
EXPECT_VECTOR2DF_EQ(scroll_amount_, ScrollDelta(scroll_layer));
EndTest();
break;
}
}
void AfterTest() override { EXPECT_EQ(1, num_outer_viewport_scrolls_); }
private:
gfx::Vector2dF initial_scroll_;
gfx::Vector2dF second_scroll_;
gfx::Vector2dF scroll_amount_;
};
MULTI_THREAD_TEST_F(LayerTreeHostScrollTestScrollSimple);
class LayerTreeHostScrollTestScrollMultipleRedraw
: public LayerTreeHostScrollTest {
public:
LayerTreeHostScrollTestScrollMultipleRedraw()
: initial_scroll_(40, 10), scroll_amount_(-3, 17) {}
void BeginTest() override {
scroll_layer_ = layer_tree_host()->OuterViewportScrollLayerForTesting();
SetScrollOffset(scroll_layer_.get(), initial_scroll_);
PostSetNeedsCommitToMainThread();
}
void BeginCommitOnThread(LayerTreeHostImpl* impl) override {
switch (impl->sync_tree()->source_frame_number()) {
case 0:
EXPECT_VECTOR2DF_EQ(initial_scroll_,
CurrentScrollOffset(scroll_layer_.get()));
break;
case 1:
case 2:
EXPECT_VECTOR2DF_EQ(initial_scroll_ + scroll_amount_ + scroll_amount_,
CurrentScrollOffset(scroll_layer_.get()));
break;
}
}
void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
LayerImpl* scroll_layer =
impl->active_tree()->LayerById(scroll_layer_->id());
if (impl->active_tree()->source_frame_number() == 0 &&
impl->SourceAnimationFrameNumberForTesting() == 1) {
// First draw after first commit.
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollDelta(scroll_layer));
scroll_layer->ScrollBy(scroll_amount_);
EXPECT_VECTOR2DF_EQ(scroll_amount_, ScrollDelta(scroll_layer));
EXPECT_VECTOR2DF_EQ(initial_scroll_, ScrollOffsetBase(scroll_layer));
PostSetNeedsRedrawToMainThread();
} else if (impl->active_tree()->source_frame_number() == 0 &&
impl->SourceAnimationFrameNumberForTesting() == 2) {
// Second draw after first commit.
EXPECT_VECTOR2DF_EQ(ScrollDelta(scroll_layer), scroll_amount_);
scroll_layer->ScrollBy(scroll_amount_);
EXPECT_VECTOR2DF_EQ(scroll_amount_ + scroll_amount_,
ScrollDelta(scroll_layer));
EXPECT_VECTOR2DF_EQ(initial_scroll_,
CurrentScrollOffset(scroll_layer_.get()));
PostSetNeedsCommitToMainThread();
} else if (impl->active_tree()->source_frame_number() == 1) {
// Third or later draw after second commit.
EXPECT_GE(impl->SourceAnimationFrameNumberForTesting(), 3u);
EXPECT_VECTOR2DF_EQ(initial_scroll_ + scroll_amount_ + scroll_amount_,
CurrentScrollOffset(scroll_layer_.get()));
EndTest();
}
}
void AfterTest() override { EXPECT_EQ(1, num_outer_viewport_scrolls_); }
private:
gfx::Vector2dF initial_scroll_;
gfx::Vector2dF scroll_amount_;
scoped_refptr<Layer> scroll_layer_;
};
MULTI_THREAD_TEST_F(LayerTreeHostScrollTestScrollMultipleRedraw);
class LayerTreeHostScrollTestScrollAbortedCommit
: public LayerTreeHostScrollTest {
public:
LayerTreeHostScrollTestScrollAbortedCommit()
: initial_scroll_(50, 60),
impl_scroll_(-3, 2),
second_main_scroll_(14, -3),
impl_scale_(2.f),
num_will_begin_main_frames_(0),
num_did_begin_main_frames_(0),
num_will_commits_(0),
num_did_commits_(0),
num_impl_commits_(0) {}
void BeginTest() override {
SetScrollOffset(layer_tree_host()->OuterViewportScrollLayerForTesting(),
initial_scroll_);
PostSetNeedsCommitToMainThread();
}
void SetupTree() override {
LayerTreeHostScrollTest::SetupTree();
gfx::Size scroll_layer_bounds(200, 200);
layer_tree_host()->OuterViewportScrollLayerForTesting()->SetBounds(
scroll_layer_bounds);
layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.01f, 100.f);
}
void WillBeginMainFrame() override {
num_will_begin_main_frames_++;
Layer* root_scroll_layer =
layer_tree_host()->OuterViewportScrollLayerForTesting();
switch (num_will_begin_main_frames_) {
case 1:
// This will not be aborted because of the initial prop changes.
EXPECT_EQ(0, num_outer_viewport_scrolls_);
EXPECT_EQ(0, layer_tree_host()->SourceFrameNumber());
EXPECT_VECTOR2DF_EQ(initial_scroll_,
CurrentScrollOffset(root_scroll_layer));
EXPECT_EQ(1.f, layer_tree_host()->page_scale_factor());
break;
case 2:
// This commit will be aborted, and another commit will be
// initiated from the redraw.
EXPECT_EQ(1, num_outer_viewport_scrolls_);
EXPECT_EQ(1, layer_tree_host()->SourceFrameNumber());
EXPECT_VECTOR2DF_EQ(initial_scroll_ + impl_scroll_,
CurrentScrollOffset(root_scroll_layer));
EXPECT_EQ(impl_scale_, layer_tree_host()->page_scale_factor());
PostSetNeedsRedrawToMainThread();
break;
case 3:
// This commit will not be aborted because of the scroll change.
EXPECT_EQ(2, num_outer_viewport_scrolls_);
// The source frame number still increases even with the abort.
EXPECT_EQ(2, layer_tree_host()->SourceFrameNumber());
EXPECT_VECTOR2DF_EQ(initial_scroll_ + impl_scroll_ + impl_scroll_,
CurrentScrollOffset(root_scroll_layer));
EXPECT_EQ(impl_scale_ * impl_scale_,
layer_tree_host()->page_scale_factor());
SetScrollOffset(
root_scroll_layer,
CurrentScrollOffset(root_scroll_layer) + second_main_scroll_);
break;
case 4:
// This commit will also be aborted.
EXPECT_EQ(3, num_outer_viewport_scrolls_);
EXPECT_EQ(3, layer_tree_host()->SourceFrameNumber());
gfx::Vector2dF delta =
impl_scroll_ + impl_scroll_ + impl_scroll_ + second_main_scroll_;
EXPECT_VECTOR2DF_EQ(initial_scroll_ + delta,
CurrentScrollOffset(root_scroll_layer));
// End the test by drawing to verify this commit is also aborted.
PostSetNeedsRedrawToMainThread();
break;
}
}
void DidBeginMainFrame() override { num_did_begin_main_frames_++; }
void WillCommit(CommitState*) override { num_will_commits_++; }
void DidCommit() override { num_did_commits_++; }
void BeginCommitOnThread(LayerTreeHostImpl* impl) override {
num_impl_commits_++;
}
void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
LayerImpl* root_scroll_layer =
impl->active_tree()->OuterViewportScrollLayerForTesting();
if (impl->active_tree()->source_frame_number() == 0 &&
impl->SourceAnimationFrameNumberForTesting() == 1) {
// First draw
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollDelta(root_scroll_layer));
root_scroll_layer->ScrollBy(impl_scroll_);
EXPECT_VECTOR2DF_EQ(impl_scroll_, ScrollDelta(root_scroll_layer));
EXPECT_VECTOR2DF_EQ(initial_scroll_, ScrollOffsetBase(root_scroll_layer));
EXPECT_EQ(1.f, impl->active_tree()->page_scale_delta());
EXPECT_EQ(1.f, impl->active_tree()->current_page_scale_factor());
impl->active_tree()->SetPageScaleOnActiveTree(impl_scale_);
EXPECT_EQ(impl_scale_, impl->active_tree()->page_scale_delta());
EXPECT_EQ(impl_scale_, impl->active_tree()->current_page_scale_factor());
// To simplify the testing flow, don't redraw here, just commit.
impl->SetNeedsCommit();
} else if (impl->active_tree()->source_frame_number() == 0 &&
impl->SourceAnimationFrameNumberForTesting() == 2) {
// Test a second draw after an aborted commit.
// The scroll/scale values should be baked into the offset/scale factor
// since the main thread consumed but aborted the begin frame.
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollDelta(root_scroll_layer));
root_scroll_layer->ScrollBy(impl_scroll_);
EXPECT_VECTOR2DF_EQ(impl_scroll_, ScrollDelta(root_scroll_layer));
EXPECT_VECTOR2DF_EQ(initial_scroll_ + impl_scroll_,
ScrollOffsetBase(root_scroll_layer));
EXPECT_EQ(1.f, impl->active_tree()->page_scale_delta());
EXPECT_EQ(impl_scale_, impl->active_tree()->current_page_scale_factor());
impl->active_tree()->SetPageScaleOnActiveTree(impl_scale_ * impl_scale_);
EXPECT_EQ(impl_scale_, impl->active_tree()->page_scale_delta());
EXPECT_EQ(impl_scale_ * impl_scale_,
impl->active_tree()->current_page_scale_factor());
impl->SetNeedsCommit();
} else if (impl->active_tree()->source_frame_number() == 1) {
// Commit for source frame 1 is aborted.
NOTREACHED();
} else if (impl->active_tree()->source_frame_number() == 2 &&
impl->SourceAnimationFrameNumberForTesting() == 3) {
// Third draw after the second full commit.
EXPECT_EQ(ScrollDelta(root_scroll_layer), gfx::Vector2dF());
root_scroll_layer->ScrollBy(impl_scroll_);
impl->SetNeedsCommit();
EXPECT_VECTOR2DF_EQ(impl_scroll_, ScrollDelta(root_scroll_layer));
gfx::Vector2dF delta = impl_scroll_ + impl_scroll_ + second_main_scroll_;
EXPECT_VECTOR2DF_EQ(initial_scroll_ + delta,
ScrollOffsetBase(root_scroll_layer));
} else if (impl->active_tree()->source_frame_number() == 2 &&
impl->SourceAnimationFrameNumberForTesting() == 4) {
// Final draw after the second aborted commit.
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollDelta(root_scroll_layer));
gfx::Vector2dF delta =
impl_scroll_ + impl_scroll_ + impl_scroll_ + second_main_scroll_;
EXPECT_VECTOR2DF_EQ(initial_scroll_ + delta,
ScrollOffsetBase(root_scroll_layer));
EndTest();
} else {
// Commit for source frame 3 is aborted.
NOTREACHED();
}
}
void AfterTest() override {
EXPECT_EQ(3, num_outer_viewport_scrolls_);
// Verify that the embedder sees aborted commits as real commits.
EXPECT_EQ(4, num_will_begin_main_frames_);
EXPECT_EQ(4, num_did_begin_main_frames_);
EXPECT_EQ(4, num_will_commits_);
EXPECT_EQ(4, num_did_commits_);
// ...but the compositor thread only sees two real ones.
EXPECT_EQ(2, num_impl_commits_);
}
private:
gfx::Vector2dF initial_scroll_;
gfx::Vector2dF impl_scroll_;
gfx::Vector2dF second_main_scroll_;
float impl_scale_;
int num_will_begin_main_frames_;
int num_did_begin_main_frames_;
int num_will_commits_;
int num_did_commits_;
int num_impl_commits_;
};
MULTI_THREAD_TEST_F(LayerTreeHostScrollTestScrollAbortedCommit);
class LayerTreeHostScrollTestFractionalScroll : public LayerTreeHostScrollTest {
public:
LayerTreeHostScrollTestFractionalScroll() : scroll_amount_(1.75, 0) {}
void SetupTree() override {
LayerTreeHostScrollTest::SetupTree();
layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.01f, 100.f);
}
void BeginTest() override { PostSetNeedsCommitToMainThread(); }
void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
LayerImpl* scroll_layer =
impl->active_tree()->OuterViewportScrollLayerForTesting();
// Check that a fractional scroll delta is correctly accumulated over
// multiple commits.
switch (impl->active_tree()->source_frame_number()) {
case 0:
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollOffsetBase(scroll_layer));
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollDelta(scroll_layer));
PostSetNeedsCommitToMainThread();
break;
case 1:
EXPECT_VECTOR2DF_EQ(
gfx::Vector2dF(gfx::ToRoundedVector2d(scroll_amount_)),
ScrollOffsetBase(scroll_layer));
EXPECT_VECTOR2DF_EQ(
scroll_amount_ - gfx::ToRoundedVector2d(scroll_amount_),
ScrollDelta(scroll_layer));
PostSetNeedsCommitToMainThread();
break;
case 2:
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(gfx::ToRoundedVector2d(
scroll_amount_ + scroll_amount_)),
ScrollOffsetBase(scroll_layer));
EXPECT_VECTOR2DF_EQ(
scroll_amount_ + scroll_amount_ -
gfx::ToRoundedVector2d(scroll_amount_ + scroll_amount_),
ScrollDelta(scroll_layer));
EndTest();
break;
}
scroll_layer->ScrollBy(scroll_amount_);
}
private:
gfx::Vector2dF scroll_amount_;
};
MULTI_THREAD_TEST_F(LayerTreeHostScrollTestFractionalScroll);
class LayerTreeHostScrollTestScrollSnapping : public LayerTreeHostScrollTest {
public:
LayerTreeHostScrollTestScrollSnapping() : scroll_amount_(1.75, 0) {}
void SetupTree() override {
LayerTreeHostScrollTest::SetupTree();
scoped_refptr<Layer> container = Layer::Create();
container->SetBounds(gfx::Size(100, 100));
CopyProperties(layer_tree_host()->OuterViewportScrollLayerForTesting(),
container.get());
CreateTransformNode(container.get()).post_translation =
gfx::Vector2dF(0.25, 0);
CreateEffectNode(container.get()).render_surface_reason =
RenderSurfaceReason::kTest;
layer_tree_host()->root_layer()->AddChild(container);
scroll_layer_ = Layer::Create();
scroll_layer_->SetBounds(gfx::Size(200, 200));
scroll_layer_->SetIsDrawable(true);
scroll_layer_->SetElementId(
LayerIdToElementIdForTesting(scroll_layer_->id()));
CopyProperties(container.get(), scroll_layer_.get());
CreateTransformNode(scroll_layer_.get());
CreateScrollNode(scroll_layer_.get(), gfx::Size(100, 100));
layer_tree_host()->root_layer()->AddChild(scroll_layer_);
layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.1f, 100.f);
}
void BeginTest() override { PostSetNeedsCommitToMainThread(); }
void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
LayerImpl* scroll_layer =
impl->active_tree()->LayerById(scroll_layer_->id());
gfx::Transform translate;
// Check that screen space transform of the scrollable layer is correctly
// snapped to integers.
switch (impl->active_tree()->source_frame_number()) {
case 0:
EXPECT_EQ(gfx::Transform(),
scroll_layer->draw_properties().screen_space_transform);
PostSetNeedsCommitToMainThread();
break;
case 1:
translate.Translate(-2, 0);
EXPECT_EQ(translate,
scroll_layer->draw_properties().screen_space_transform);
PostSetNeedsCommitToMainThread();
break;
case 2:
translate.Translate(-4, 0);
EXPECT_EQ(translate,
scroll_layer->draw_properties().screen_space_transform);
EndTest();
break;
}
scroll_layer->ScrollBy(scroll_amount_);
}
private:
scoped_refptr<Layer> scroll_layer_;
gfx::Vector2dF scroll_amount_;
};
MULTI_THREAD_TEST_F(LayerTreeHostScrollTestScrollSnapping);
class LayerTreeHostScrollTestCaseWithChild : public LayerTreeHostScrollTest {
public:
LayerTreeHostScrollTestCaseWithChild()
: initial_offset_(10, 20),
javascript_scroll_(40, 5),
scroll_amount_(2, -1) {}
void SetupTree() override {
SetInitialDeviceScaleFactor(device_scale_factor_);
SetInitialRootBounds(gfx::Size(10, 10));
LayerTreeHostScrollTest::SetupTree();
Layer* root_layer = layer_tree_host()->root_layer();
Layer* root_scroll_layer =
layer_tree_host()->OuterViewportScrollLayerForTesting();
child_layer_ = Layer::Create();
child_layer_->SetElementId(
LayerIdToElementIdForTesting(child_layer_->id()));
child_layer_->SetBounds(gfx::Size(110, 110));
gfx::Vector2dF child_layer_offset;
// Adjust the child layer horizontally so that scrolls will never hit it.
if (scroll_child_layer_) {
// Scrolls on the child layer will happen at 5, 5. If they are treated
// like device pixels, and device scale factor is 2, then they will
// be considered at 2.5, 2.5 in logical pixels, and will miss this layer.
child_layer_offset = gfx::Vector2dF(5.f, 5.f);
} else {
child_layer_offset = gfx::Vector2dF(60.f, 5.f);
}
child_layer_->SetIsDrawable(true);
child_layer_->SetHitTestable(true);
child_layer_->SetElementId(
LayerIdToElementIdForTesting(child_layer_->id()));
child_layer_->SetBounds(root_scroll_layer->bounds());
root_layer->AddChild(child_layer_);
CopyProperties(root_scroll_layer, child_layer_.get());
CreateTransformNode(child_layer_.get()).post_translation =
child_layer_offset;
CreateScrollNode(child_layer_.get(), root_layer->bounds());
if (scroll_child_layer_) {
expected_scroll_layer_ = child_layer_.get();
expected_no_scroll_layer_ = root_scroll_layer;
} else {
expected_scroll_layer_ = root_scroll_layer;
expected_no_scroll_layer_ = child_layer_.get();
}
SetScrollOffset(expected_scroll_layer_, initial_offset_);
}
void BeginTest() override { PostSetNeedsCommitToMainThread(); }
void WillCommit(CommitState* commit_state) override {
// Keep the test committing (otherwise the early out for no update
// will stall the test).
if (commit_state->source_frame_number < 2) {
layer_tree_host()->SetNeedsCommit();
}
}
void DidCompositorScroll(ElementId element_id,
const gfx::Vector2dF& offset,
const absl::optional<TargetSnapAreaElementIds>&
snap_target_ids) override {
LayerTreeHostScrollTest::DidCompositorScroll(element_id, offset,
snap_target_ids);
if (element_id == expected_scroll_layer_->element_id()) {
final_scroll_offset_ = CurrentScrollOffset(expected_scroll_layer_);
EXPECT_EQ(offset, final_scroll_offset_);
EXPECT_EQ(element_id, expected_scroll_layer_->element_id());
} else {
EXPECT_TRUE(offset.IsZero());
}
}
void UpdateLayerTreeHost() override {
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(),
CurrentScrollOffset(expected_no_scroll_layer_));
switch (layer_tree_host()->SourceFrameNumber()) {
case 0:
EXPECT_VECTOR2DF_EQ(initial_offset_,
CurrentScrollOffset(expected_scroll_layer_));
break;
case 1:
EXPECT_VECTOR2DF_EQ(initial_offset_ + scroll_amount_,
CurrentScrollOffset(expected_scroll_layer_));
// Pretend like Javascript updated the scroll position itself.
SetScrollOffset(expected_scroll_layer_, javascript_scroll_);
break;
case 2:
EXPECT_VECTOR2DF_EQ(javascript_scroll_ + scroll_amount_,
CurrentScrollOffset(expected_scroll_layer_));
break;
}
}
void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
LayerImpl* inner_scroll =
impl->active_tree()->InnerViewportScrollLayerForTesting();
LayerImpl* root_scroll_layer_impl =
impl->active_tree()->OuterViewportScrollLayerForTesting();
LayerImpl* child_layer_impl =
root_scroll_layer_impl->layer_tree_impl()->LayerById(
child_layer_->id());
LayerImpl* expected_scroll_layer_impl = nullptr;
LayerImpl* expected_no_scroll_layer_impl = nullptr;
if (scroll_child_layer_) {
expected_scroll_layer_impl = child_layer_impl;
expected_no_scroll_layer_impl = root_scroll_layer_impl;
} else {
expected_scroll_layer_impl = root_scroll_layer_impl;
expected_no_scroll_layer_impl = child_layer_impl;
}
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollDelta(inner_scroll));
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(),
ScrollDelta(expected_no_scroll_layer_impl));
// Ensure device scale factor matches the active tree.
EXPECT_EQ(device_scale_factor_, impl->active_tree()->device_scale_factor());
switch (impl->active_tree()->source_frame_number()) {
case 0: {
// GESTURE scroll on impl thread. Also tests that the last scrolled
// layer id is stored even after the scrolling ends.
gfx::Point scroll_point = gfx::ToCeiledPoint(
gfx::PointF(-0.5f, -0.5f) +
GetTransformNode(expected_scroll_layer_impl)->post_translation);
InputHandler::ScrollStatus status = impl->GetInputHandler().ScrollBegin(
BeginState(scroll_point, scroll_amount_).get(),
ui::ScrollInputType::kTouchscreen);
EXPECT_EQ(ScrollThread::SCROLL_ON_IMPL_THREAD, status.thread);
impl->GetInputHandler().ScrollUpdate(
UpdateState(gfx::Point(), scroll_amount_).get());
auto* scrolling_node = impl->CurrentlyScrollingNode();
CHECK(scrolling_node);
impl->GetInputHandler().ScrollEnd();
CHECK(!impl->CurrentlyScrollingNode());
EXPECT_EQ(scrolling_node->id,
impl->active_tree()->LastScrolledScrollNodeIndex());
// Check the scroll is applied as a delta.
EXPECT_VECTOR2DF_EQ(initial_offset_,
ScrollOffsetBase(expected_scroll_layer_impl));
EXPECT_VECTOR2DF_EQ(scroll_amount_,
ScrollDelta(expected_scroll_layer_impl));
break;
}
case 1: {
// WHEEL scroll on impl thread.
gfx::Point scroll_point = gfx::ToCeiledPoint(
gfx::PointF(0.5f, 0.5f) +
GetTransformNode(expected_scroll_layer_impl)->post_translation);
InputHandler::ScrollStatus status = impl->GetInputHandler().ScrollBegin(
BeginState(scroll_point, scroll_amount_).get(),
ui::ScrollInputType::kWheel);
EXPECT_EQ(ScrollThread::SCROLL_ON_IMPL_THREAD, status.thread);
impl->GetInputHandler().ScrollUpdate(
UpdateState(gfx::Point(), scroll_amount_).get());
impl->GetInputHandler().ScrollEnd();
// Check the scroll is applied as a delta.
EXPECT_VECTOR2DF_EQ(javascript_scroll_,
ScrollOffsetBase(expected_scroll_layer_impl));
EXPECT_VECTOR2DF_EQ(scroll_amount_,
ScrollDelta(expected_scroll_layer_impl));
break;
}
case 2:
EXPECT_VECTOR2DF_EQ(javascript_scroll_ + scroll_amount_,
ScrollOffsetBase(expected_scroll_layer_impl));
EXPECT_VECTOR2DF_EQ(gfx::Vector2d(),
ScrollDelta(expected_scroll_layer_impl));
EndTest();
break;
}
}
void AfterTest() override {
EXPECT_EQ(scroll_child_layer_ ? 0 : 2, num_outer_viewport_scrolls_);
EXPECT_VECTOR2DF_EQ(javascript_scroll_ + scroll_amount_,
final_scroll_offset_);
}
protected:
float device_scale_factor_;
bool scroll_child_layer_;
gfx::Vector2dF initial_offset_;
gfx::Vector2dF javascript_scroll_;
gfx::Vector2d scroll_amount_;
gfx::Vector2dF final_scroll_offset_;
scoped_refptr<Layer> child_layer_;
Layer* expected_scroll_layer_;
Layer* expected_no_scroll_layer_;
};
TEST_F(LayerTreeHostScrollTestCaseWithChild, DeviceScaleFactor1_ScrollChild) {
device_scale_factor_ = 1.f;
scroll_child_layer_ = true;
RunTest(CompositorMode::THREADED);
}
TEST_F(LayerTreeHostScrollTestCaseWithChild, DeviceScaleFactor15_ScrollChild) {
device_scale_factor_ = 1.5f;
scroll_child_layer_ = true;
RunTest(CompositorMode::THREADED);
}
TEST_F(LayerTreeHostScrollTestCaseWithChild, DeviceScaleFactor2_ScrollChild) {
device_scale_factor_ = 2.f;
scroll_child_layer_ = true;
RunTest(CompositorMode::THREADED);
}
TEST_F(LayerTreeHostScrollTestCaseWithChild,
DeviceScaleFactor1_ScrollRootScrollLayer) {
device_scale_factor_ = 1.f;
scroll_child_layer_ = false;
RunTest(CompositorMode::THREADED);
}
TEST_F(LayerTreeHostScrollTestCaseWithChild,
DeviceScaleFactor15_ScrollRootScrollLayer) {
device_scale_factor_ = 1.5f;
scroll_child_layer_ = false;
RunTest(CompositorMode::THREADED);
}
TEST_F(LayerTreeHostScrollTestCaseWithChild,
DeviceScaleFactor2_ScrollRootScrollLayer) {
device_scale_factor_ = 2.f;
scroll_child_layer_ = false;
RunTest(CompositorMode::THREADED);
}
class LayerTreeHostScrollTestSimple : public LayerTreeHostScrollTest {
public:
LayerTreeHostScrollTestSimple()
: initial_scroll_(10, 20),
main_thread_scroll_(40, 5),
impl_thread_scroll1_(2, -1),
impl_thread_scroll2_(-3, 10) {}
void SetupTree() override {
LayerTreeHostScrollTest::SetupTree();
layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.01f, 100.f);
}
void BeginTest() override {
SetScrollOffset(layer_tree_host()->OuterViewportScrollLayerForTesting(),
initial_scroll_);
PostSetNeedsCommitToMainThread();
}
void UpdateLayerTreeHost() override {
Layer* scroll_layer =
layer_tree_host()->OuterViewportScrollLayerForTesting();
if (!layer_tree_host()->SourceFrameNumber()) {
EXPECT_VECTOR2DF_EQ(initial_scroll_, CurrentScrollOffset(scroll_layer));
} else {
EXPECT_VECTOR2DF_EQ(CurrentScrollOffset(scroll_layer),
initial_scroll_ + impl_thread_scroll1_);
// Pretend like Javascript updated the scroll position itself with a
// change of main_thread_scroll.
SetScrollOffset(scroll_layer, initial_scroll_ + main_thread_scroll_ +
impl_thread_scroll1_);
}
}
void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
// We force a second draw here of the first commit before activating
// the second commit.
if (impl->active_tree()->source_frame_number() == 0)
impl->SetNeedsRedraw();
}
void DrawLayersOnThread(LayerTreeHostImpl* impl) override {
if (impl->pending_tree())
impl->SetNeedsRedraw();
LayerImpl* root = impl->active_tree()->root_layer();
LayerImpl* scroll_layer =
impl->active_tree()->OuterViewportScrollLayerForTesting();
LayerImpl* pending_root =
impl->active_tree()->FindPendingTreeLayerById(root->id());
switch (impl->active_tree()->source_frame_number()) {
case 0:
if (!impl->pending_tree()) {
impl->BlockNotifyReadyToActivateForTesting(true);
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(), ScrollDelta(scroll_layer));
scroll_layer->ScrollBy(impl_thread_scroll1_);
EXPECT_VECTOR2DF_EQ(initial_scroll_, ScrollOffsetBase(scroll_layer));
EXPECT_VECTOR2DF_EQ(impl_thread_scroll1_, ScrollDelta(scroll_layer));
PostSetNeedsCommitToMainThread();
// CommitCompleteOnThread will trigger this function again
// and cause us to take the else clause.
} else {
impl->BlockNotifyReadyToActivateForTesting(false);
ASSERT_TRUE(pending_root);
EXPECT_EQ(impl->pending_tree()->source_frame_number(), 1);
scroll_layer->ScrollBy(impl_thread_scroll2_);
EXPECT_VECTOR2DF_EQ(initial_scroll_, ScrollOffsetBase(scroll_layer));
EXPECT_VECTOR2DF_EQ(impl_thread_scroll1_ + impl_thread_scroll2_,
ScrollDelta(scroll_layer));
LayerImpl* pending_scroll_layer =
impl->pending_tree()->OuterViewportScrollLayerForTesting();
EXPECT_VECTOR2DF_EQ(
initial_scroll_ + main_thread_scroll_ + impl_thread_scroll1_,
ScrollOffsetBase(pending_scroll_layer));
EXPECT_VECTOR2DF_EQ(impl_thread_scroll2_,
ScrollDelta(pending_scroll_layer));
}
break;
case 1:
EXPECT_FALSE(impl->pending_tree());
EXPECT_VECTOR2DF_EQ(
initial_scroll_ + main_thread_scroll_ + impl_thread_scroll1_,
ScrollOffsetBase(scroll_layer));
EXPECT_VECTOR2DF_EQ(impl_thread_scroll2_, ScrollDelta(scroll_layer));
EndTest();
break;
}
}
void AfterTest() override { EXPECT_EQ(1, num_outer_viewport_scrolls_); }
private:
gfx::Vector2dF initial_scroll_;
gfx::Vector2dF main_thread_scroll_;
gfx::Vector2dF impl_thread_scroll1_;
gfx::Vector2dF impl_thread_scroll2_;
};
// This tests scrolling on the impl side which is only possible with a thread.
MULTI_THREAD_TEST_F(LayerTreeHostScrollTestSimple);
// This test makes sure that layers pick up scrolls that occur between
// beginning a commit and finishing a commit (aka scroll deltas not
// included in sent scroll delta) still apply to layers that don't
// push properties.
class LayerTreeHostScrollTestImplOnlyScroll : public LayerTreeHostScrollTest {
public:
LayerTreeHostScrollTestImplOnlyScroll()
: initial_scroll_(20, 10), impl_thread_scroll_(-2, 3), impl_scale_(2.f) {}
void SetupTree() override {
LayerTreeHostScrollTest::SetupTree();
layer_tree_host()->SetPageScaleFactorAndLimits(1.f, 0.01f, 100.f);
}
void BeginTest() override {
SetScrollOffset(layer_tree_host()->OuterViewportScrollLayerForTesting(),
initial_scroll_);
PostSetNeedsCommitToMainThread();
}
void WillCommit(CommitState* commit_state) override {
Layer* scroll_layer =
layer_tree_host()->OuterViewportScrollLayerForTesting();
switch (commit_state->source_frame_number) {
case 0:
EXPECT_TRUE(commit_state->layers_that_should_push_properties.contains(
scroll_layer));
break;
case 1:
// Even if this layer doesn't need push properties, it should
// still pick up scrolls that happen on the active layer during
// commit.
EXPECT_FALSE(commit_state->layers_that_should_push_properties.contains(
scroll_layer));
break;
}
}
void BeginCommitOnThread(LayerTreeHostImpl* impl) override {
// Scroll after the 2nd commit has started.
if (impl->active_tree()->source_frame_number() == 0) {
LayerImpl* active_root = impl->active_tree()->root_layer();
LayerImpl* active_scroll_layer =
impl->active_tree()->OuterViewportScrollLayerForTesting();
ASSERT_TRUE(active_root);
ASSERT_TRUE(active_scroll_layer);
active_scroll_layer->ScrollBy(impl_thread_scroll_);
impl->active_tree()->SetPageScaleOnActiveTree(impl_scale_);
}
}
void CommitCompleteOnThread(LayerTreeHostImpl* impl) override {
// We force a second draw here of the first commit before activating
// the second commit.
LayerImpl* active_root = impl->active_tree()->root_layer();
LayerImpl* active_scroll_layer =
active_root ? impl->active_tree()->OuterViewportScrollLayerForTesting()
: nullptr;
LayerImpl* pending_root = impl->pending_tree()->root_layer();
LayerImpl* pending_scroll_layer =
impl->pending_tree()->OuterViewportScrollLayerForTesting();
ASSERT_TRUE(pending_root);
ASSERT_TRUE(pending_scroll_layer);
switch (impl->pending_tree()->source_frame_number()) {
case 0:
EXPECT_VECTOR2DF_EQ(initial_scroll_,
ScrollOffsetBase(pending_scroll_layer));
EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(),
ScrollDelta(pending_scroll_layer));
EXPECT_FALSE(active_root);
break;
case 1:
// Even though the scroll happened during the commit, both layers
// should have the appropriate scroll delta.
EXPECT_VECTOR2DF_EQ(initial_scroll_,
ScrollOffsetBase(pending_scroll_layer));
EXPECT_VECTOR2DF_EQ(impl_thread_scroll_,
ScrollDelta(pending_scroll_layer));
ASSERT_TRUE(active_root);
EXPECT_VECTOR2DF_EQ(initial_scroll_,
ScrollOffsetBase(active_scroll_layer));
EXPECT_VECTOR2DF_EQ(impl_thread_scroll_,
ScrollDelta(active_scroll_layer));
break;
case 2:
// On the next commit, this delta should have been sent and applied.
EXPECT_VECTOR2DF_EQ(initial_scroll_ + impl_thread_scroll_,
ScrollOffsetBase(pending_scroll_layer));
EXPECT_VECTOR2DF_EQ(gfx::Vector2d(), ScrollDelta(pending_scroll_layer));
break;
}
// Ensure that the scroll-offsets on the TransformTree are consistent with