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layer_tree_host_impl_unittest.cc
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layer_tree_host_impl_unittest.cc
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// Copyright 2011 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_impl.h"
#include <cmath>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/containers/hash_tables.h"
#include "base/containers/scoped_ptr_hash_map.h"
#include "cc/animation/scrollbar_animation_controller_thinning.h"
#include "cc/base/latency_info_swap_promise.h"
#include "cc/base/math_util.h"
#include "cc/input/top_controls_manager.h"
#include "cc/layers/append_quads_data.h"
#include "cc/layers/delegated_renderer_layer_impl.h"
#include "cc/layers/heads_up_display_layer_impl.h"
#include "cc/layers/io_surface_layer_impl.h"
#include "cc/layers/layer_impl.h"
#include "cc/layers/painted_scrollbar_layer_impl.h"
#include "cc/layers/quad_sink.h"
#include "cc/layers/render_surface_impl.h"
#include "cc/layers/solid_color_layer_impl.h"
#include "cc/layers/texture_layer_impl.h"
#include "cc/layers/tiled_layer_impl.h"
#include "cc/layers/video_layer_impl.h"
#include "cc/output/begin_frame_args.h"
#include "cc/output/compositor_frame_ack.h"
#include "cc/output/compositor_frame_metadata.h"
#include "cc/output/copy_output_request.h"
#include "cc/output/copy_output_result.h"
#include "cc/output/gl_renderer.h"
#include "cc/quads/render_pass_draw_quad.h"
#include "cc/quads/solid_color_draw_quad.h"
#include "cc/quads/texture_draw_quad.h"
#include "cc/quads/tile_draw_quad.h"
#include "cc/resources/layer_tiling_data.h"
#include "cc/test/animation_test_common.h"
#include "cc/test/fake_layer_tree_host_impl.h"
#include "cc/test/fake_output_surface.h"
#include "cc/test/fake_output_surface_client.h"
#include "cc/test/fake_picture_layer_impl.h"
#include "cc/test/fake_picture_pile_impl.h"
#include "cc/test/fake_proxy.h"
#include "cc/test/fake_rendering_stats_instrumentation.h"
#include "cc/test/fake_video_frame_provider.h"
#include "cc/test/geometry_test_utils.h"
#include "cc/test/layer_test_common.h"
#include "cc/test/render_pass_test_common.h"
#include "cc/test/test_web_graphics_context_3d.h"
#include "cc/trees/layer_tree_impl.h"
#include "cc/trees/single_thread_proxy.h"
#include "media/base/media.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkMallocPixelRef.h"
#include "ui/gfx/frame_time.h"
#include "ui/gfx/rect_conversions.h"
#include "ui/gfx/size_conversions.h"
#include "ui/gfx/vector2d_conversions.h"
using ::testing::Mock;
using ::testing::Return;
using ::testing::AnyNumber;
using ::testing::AtLeast;
using ::testing::_;
using media::VideoFrame;
namespace cc {
namespace {
class LayerTreeHostImplTest : public testing::Test,
public LayerTreeHostImplClient {
public:
LayerTreeHostImplTest()
: proxy_(base::MessageLoopProxy::current()),
always_impl_thread_(&proxy_),
always_main_thread_blocked_(&proxy_),
on_can_draw_state_changed_called_(false),
did_notify_ready_to_activate_(false),
did_request_commit_(false),
did_request_redraw_(false),
did_request_manage_tiles_(false),
did_upload_visible_tile_(false),
reduce_memory_result_(true),
current_limit_bytes_(0),
current_priority_cutoff_value_(0) {
media::InitializeMediaLibraryForTesting();
}
LayerTreeSettings DefaultSettings() {
LayerTreeSettings settings;
settings.minimum_occlusion_tracking_size = gfx::Size();
settings.impl_side_painting = true;
settings.texture_id_allocation_chunk_size = 1;
return settings;
}
virtual void SetUp() OVERRIDE {
CreateHostImpl(DefaultSettings(), CreateOutputSurface());
}
virtual void TearDown() OVERRIDE {}
virtual void UpdateRendererCapabilitiesOnImplThread() OVERRIDE {}
virtual void DidLoseOutputSurfaceOnImplThread() OVERRIDE {}
virtual void DidSwapBuffersOnImplThread() OVERRIDE {}
virtual void OnSwapBuffersCompleteOnImplThread() OVERRIDE {}
virtual void BeginImplFrame(const BeginFrameArgs& args) OVERRIDE {}
virtual void OnCanDrawStateChanged(bool can_draw) OVERRIDE {
on_can_draw_state_changed_called_ = true;
}
virtual void NotifyReadyToActivate() OVERRIDE {
did_notify_ready_to_activate_ = true;
host_impl_->ActivatePendingTree();
}
virtual void SetNeedsRedrawOnImplThread() OVERRIDE {
did_request_redraw_ = true;
}
virtual void SetNeedsRedrawRectOnImplThread(
const gfx::Rect& damage_rect) OVERRIDE {
did_request_redraw_ = true;
}
virtual void SetNeedsManageTilesOnImplThread() OVERRIDE {
did_request_manage_tiles_ = true;
}
virtual void DidInitializeVisibleTileOnImplThread() OVERRIDE {
did_upload_visible_tile_ = true;
}
virtual void SetNeedsCommitOnImplThread() OVERRIDE {
did_request_commit_ = true;
}
virtual void PostAnimationEventsToMainThreadOnImplThread(
scoped_ptr<AnimationEventsVector> events) OVERRIDE {}
virtual bool ReduceContentsTextureMemoryOnImplThread(
size_t limit_bytes, int priority_cutoff) OVERRIDE {
current_limit_bytes_ = limit_bytes;
current_priority_cutoff_value_ = priority_cutoff;
return reduce_memory_result_;
}
virtual void SendManagedMemoryStats() OVERRIDE {}
virtual bool IsInsideDraw() OVERRIDE { return false; }
virtual void RenewTreePriority() OVERRIDE {}
virtual void RequestScrollbarAnimationOnImplThread(base::TimeDelta delay)
OVERRIDE { requested_scrollbar_animation_delay_ = delay; }
virtual void DidActivatePendingTree() OVERRIDE {}
virtual void DidManageTiles() OVERRIDE {}
void set_reduce_memory_result(bool reduce_memory_result) {
reduce_memory_result_ = reduce_memory_result;
}
bool CreateHostImpl(const LayerTreeSettings& settings,
scoped_ptr<OutputSurface> output_surface) {
host_impl_ = LayerTreeHostImpl::Create(
settings, this, &proxy_, &stats_instrumentation_, NULL, 0);
bool init = host_impl_->InitializeRenderer(output_surface.Pass());
host_impl_->SetViewportSize(gfx::Size(10, 10));
return init;
}
void SetupRootLayerImpl(scoped_ptr<LayerImpl> root) {
root->SetAnchorPoint(gfx::PointF());
root->SetPosition(gfx::PointF());
root->SetBounds(gfx::Size(10, 10));
root->SetContentBounds(gfx::Size(10, 10));
root->SetDrawsContent(true);
root->draw_properties().visible_content_rect = gfx::Rect(0, 0, 10, 10);
host_impl_->active_tree()->SetRootLayer(root.Pass());
}
static void ExpectClearedScrollDeltasRecursive(LayerImpl* layer) {
ASSERT_EQ(layer->ScrollDelta(), gfx::Vector2d());
for (size_t i = 0; i < layer->children().size(); ++i)
ExpectClearedScrollDeltasRecursive(layer->children()[i]);
}
static void ExpectContains(const ScrollAndScaleSet& scroll_info,
int id,
const gfx::Vector2d& scroll_delta) {
int times_encountered = 0;
for (size_t i = 0; i < scroll_info.scrolls.size(); ++i) {
if (scroll_info.scrolls[i].layer_id != id)
continue;
EXPECT_VECTOR_EQ(scroll_delta, scroll_info.scrolls[i].scroll_delta);
times_encountered++;
}
ASSERT_EQ(1, times_encountered);
}
static void ExpectNone(const ScrollAndScaleSet& scroll_info, int id) {
int times_encountered = 0;
for (size_t i = 0; i < scroll_info.scrolls.size(); ++i) {
if (scroll_info.scrolls[i].layer_id != id)
continue;
times_encountered++;
}
ASSERT_EQ(0, times_encountered);
}
LayerImpl* CreateScrollAndContentsLayers(LayerTreeImpl* layer_tree_impl,
const gfx::Size& content_size) {
const int kInnerViewportScrollLayerId = 2;
const int kInnerViewportClipLayerId = 4;
const int kPageScaleLayerId = 5;
scoped_ptr<LayerImpl> root =
LayerImpl::Create(layer_tree_impl, 1);
root->SetBounds(content_size);
root->SetContentBounds(content_size);
root->SetPosition(gfx::PointF());
root->SetAnchorPoint(gfx::PointF());
scoped_ptr<LayerImpl> scroll =
LayerImpl::Create(layer_tree_impl, kInnerViewportScrollLayerId);
LayerImpl* scroll_layer = scroll.get();
scroll->SetIsContainerForFixedPositionLayers(true);
scroll->SetScrollOffset(gfx::Vector2d());
scoped_ptr<LayerImpl> clip =
LayerImpl::Create(layer_tree_impl, kInnerViewportClipLayerId);
clip->SetBounds(
gfx::Size(content_size.width() / 2, content_size.height() / 2));
scoped_ptr<LayerImpl> page_scale =
LayerImpl::Create(layer_tree_impl, kPageScaleLayerId);
scroll->SetScrollClipLayer(clip->id());
scroll->SetBounds(content_size);
scroll->SetContentBounds(content_size);
scroll->SetPosition(gfx::PointF());
scroll->SetAnchorPoint(gfx::PointF());
scroll->SetIsContainerForFixedPositionLayers(true);
scoped_ptr<LayerImpl> contents =
LayerImpl::Create(layer_tree_impl, 3);
contents->SetDrawsContent(true);
contents->SetBounds(content_size);
contents->SetContentBounds(content_size);
contents->SetPosition(gfx::PointF());
contents->SetAnchorPoint(gfx::PointF());
scroll->AddChild(contents.Pass());
page_scale->AddChild(scroll.Pass());
clip->AddChild(page_scale.Pass());
root->AddChild(clip.Pass());
layer_tree_impl->SetRootLayer(root.Pass());
layer_tree_impl->SetViewportLayersFromIds(
kPageScaleLayerId, kInnerViewportScrollLayerId, Layer::INVALID_ID);
return scroll_layer;
}
LayerImpl* SetupScrollAndContentsLayers(const gfx::Size& content_size) {
LayerImpl* scroll_layer = CreateScrollAndContentsLayers(
host_impl_->active_tree(), content_size);
host_impl_->active_tree()->DidBecomeActive();
return scroll_layer;
}
// TODO(wjmaclean) Add clip-layer pointer to parameters.
scoped_ptr<LayerImpl> CreateScrollableLayer(int id,
const gfx::Size& size,
LayerImpl* clip_layer) {
DCHECK(clip_layer);
DCHECK(id != clip_layer->id());
scoped_ptr<LayerImpl> layer =
LayerImpl::Create(host_impl_->active_tree(), id);
layer->SetScrollClipLayer(clip_layer->id());
layer->SetDrawsContent(true);
layer->SetBounds(size);
layer->SetContentBounds(size);
clip_layer->SetBounds(gfx::Size(size.width() / 2, size.height() / 2));
return layer.Pass();
}
void DrawFrame() {
LayerTreeHostImpl::FrameData frame;
EXPECT_EQ(DrawSwapReadbackResult::DRAW_SUCCESS,
host_impl_->PrepareToDraw(&frame, gfx::Rect()));
host_impl_->DrawLayers(&frame, gfx::FrameTime::Now());
host_impl_->DidDrawAllLayers(frame);
}
void pinch_zoom_pan_viewport_forces_commit_redraw(float device_scale_factor);
void pinch_zoom_pan_viewport_test(float device_scale_factor);
void pinch_zoom_pan_viewport_and_scroll_test(float device_scale_factor);
void pinch_zoom_pan_viewport_and_scroll_boundary_test(
float device_scale_factor);
void CheckNotifyCalledIfCanDrawChanged(bool always_draw) {
// Note: It is not possible to disable the renderer once it has been set,
// so we do not need to test that disabling the renderer notifies us
// that can_draw changed.
EXPECT_FALSE(host_impl_->CanDraw());
on_can_draw_state_changed_called_ = false;
// Set up the root layer, which allows us to draw.
SetupScrollAndContentsLayers(gfx::Size(100, 100));
EXPECT_TRUE(host_impl_->CanDraw());
EXPECT_TRUE(on_can_draw_state_changed_called_);
on_can_draw_state_changed_called_ = false;
// Toggle the root layer to make sure it toggles can_draw
host_impl_->active_tree()->SetRootLayer(scoped_ptr<LayerImpl>());
EXPECT_FALSE(host_impl_->CanDraw());
EXPECT_TRUE(on_can_draw_state_changed_called_);
on_can_draw_state_changed_called_ = false;
SetupScrollAndContentsLayers(gfx::Size(100, 100));
EXPECT_TRUE(host_impl_->CanDraw());
EXPECT_TRUE(on_can_draw_state_changed_called_);
on_can_draw_state_changed_called_ = false;
// Toggle the device viewport size to make sure it toggles can_draw.
host_impl_->SetViewportSize(gfx::Size());
if (always_draw) {
EXPECT_TRUE(host_impl_->CanDraw());
} else {
EXPECT_FALSE(host_impl_->CanDraw());
}
EXPECT_TRUE(on_can_draw_state_changed_called_);
on_can_draw_state_changed_called_ = false;
host_impl_->SetViewportSize(gfx::Size(100, 100));
EXPECT_TRUE(host_impl_->CanDraw());
EXPECT_TRUE(on_can_draw_state_changed_called_);
on_can_draw_state_changed_called_ = false;
// Toggle contents textures purged without causing any evictions,
// and make sure that it does not change can_draw.
set_reduce_memory_result(false);
host_impl_->SetMemoryPolicy(ManagedMemoryPolicy(
host_impl_->memory_allocation_limit_bytes() - 1));
EXPECT_TRUE(host_impl_->CanDraw());
EXPECT_FALSE(on_can_draw_state_changed_called_);
on_can_draw_state_changed_called_ = false;
// Toggle contents textures purged to make sure it toggles can_draw.
set_reduce_memory_result(true);
host_impl_->SetMemoryPolicy(ManagedMemoryPolicy(
host_impl_->memory_allocation_limit_bytes() - 1));
if (always_draw) {
EXPECT_TRUE(host_impl_->CanDraw());
} else {
EXPECT_FALSE(host_impl_->CanDraw());
}
EXPECT_TRUE(on_can_draw_state_changed_called_);
on_can_draw_state_changed_called_ = false;
host_impl_->active_tree()->ResetContentsTexturesPurged();
EXPECT_TRUE(host_impl_->CanDraw());
EXPECT_TRUE(on_can_draw_state_changed_called_);
on_can_draw_state_changed_called_ = false;
}
void SetupMouseMoveAtWithDeviceScale(float device_scale_factor);
protected:
virtual scoped_ptr<OutputSurface> CreateOutputSurface() {
return FakeOutputSurface::Create3d().PassAs<OutputSurface>();
}
void DrawOneFrame() {
LayerTreeHostImpl::FrameData frame_data;
host_impl_->PrepareToDraw(&frame_data, gfx::Rect());
host_impl_->DidDrawAllLayers(frame_data);
}
FakeProxy proxy_;
DebugScopedSetImplThread always_impl_thread_;
DebugScopedSetMainThreadBlocked always_main_thread_blocked_;
scoped_ptr<LayerTreeHostImpl> host_impl_;
FakeRenderingStatsInstrumentation stats_instrumentation_;
bool on_can_draw_state_changed_called_;
bool did_notify_ready_to_activate_;
bool did_request_commit_;
bool did_request_redraw_;
bool did_request_manage_tiles_;
bool did_upload_visible_tile_;
bool reduce_memory_result_;
base::TimeDelta requested_scrollbar_animation_delay_;
size_t current_limit_bytes_;
int current_priority_cutoff_value_;
};
TEST_F(LayerTreeHostImplTest, NotifyIfCanDrawChanged) {
bool always_draw = false;
CheckNotifyCalledIfCanDrawChanged(always_draw);
}
TEST_F(LayerTreeHostImplTest, CanDrawIncompleteFrames) {
scoped_ptr<FakeOutputSurface> output_surface(
FakeOutputSurface::CreateAlwaysDrawAndSwap3d());
CreateHostImpl(DefaultSettings(), output_surface.PassAs<OutputSurface>());
bool always_draw = true;
CheckNotifyCalledIfCanDrawChanged(always_draw);
}
TEST_F(LayerTreeHostImplTest, ScrollDeltaNoLayers) {
ASSERT_FALSE(host_impl_->active_tree()->root_layer());
scoped_ptr<ScrollAndScaleSet> scroll_info = host_impl_->ProcessScrollDeltas();
ASSERT_EQ(scroll_info->scrolls.size(), 0u);
}
TEST_F(LayerTreeHostImplTest, ScrollDeltaTreeButNoChanges) {
{
scoped_ptr<LayerImpl> root =
LayerImpl::Create(host_impl_->active_tree(), 1);
root->AddChild(LayerImpl::Create(host_impl_->active_tree(), 2));
root->AddChild(LayerImpl::Create(host_impl_->active_tree(), 3));
root->children()[1]->AddChild(
LayerImpl::Create(host_impl_->active_tree(), 4));
root->children()[1]->AddChild(
LayerImpl::Create(host_impl_->active_tree(), 5));
root->children()[1]->children()[0]->AddChild(
LayerImpl::Create(host_impl_->active_tree(), 6));
host_impl_->active_tree()->SetRootLayer(root.Pass());
}
LayerImpl* root = host_impl_->active_tree()->root_layer();
ExpectClearedScrollDeltasRecursive(root);
scoped_ptr<ScrollAndScaleSet> scroll_info;
scroll_info = host_impl_->ProcessScrollDeltas();
ASSERT_EQ(scroll_info->scrolls.size(), 0u);
ExpectClearedScrollDeltasRecursive(root);
scroll_info = host_impl_->ProcessScrollDeltas();
ASSERT_EQ(scroll_info->scrolls.size(), 0u);
ExpectClearedScrollDeltasRecursive(root);
}
TEST_F(LayerTreeHostImplTest, ScrollDeltaRepeatedScrolls) {
gfx::Vector2d scroll_offset(20, 30);
gfx::Vector2d scroll_delta(11, -15);
{
scoped_ptr<LayerImpl> root_clip =
LayerImpl::Create(host_impl_->active_tree(), 2);
scoped_ptr<LayerImpl> root =
LayerImpl::Create(host_impl_->active_tree(), 1);
root_clip->SetBounds(gfx::Size(10, 10));
LayerImpl* root_layer = root.get();
root_clip->AddChild(root.Pass());
root_layer->SetBounds(gfx::Size(110, 110));
root_layer->SetScrollClipLayer(root_clip->id());
root_layer->SetScrollOffset(scroll_offset);
root_layer->ScrollBy(scroll_delta);
host_impl_->active_tree()->SetRootLayer(root_clip.Pass());
}
LayerImpl* root = host_impl_->active_tree()->root_layer()->children()[0];
scoped_ptr<ScrollAndScaleSet> scroll_info;
scroll_info = host_impl_->ProcessScrollDeltas();
ASSERT_EQ(scroll_info->scrolls.size(), 1u);
EXPECT_VECTOR_EQ(root->sent_scroll_delta(), scroll_delta);
ExpectContains(*scroll_info, root->id(), scroll_delta);
gfx::Vector2d scroll_delta2(-5, 27);
root->ScrollBy(scroll_delta2);
scroll_info = host_impl_->ProcessScrollDeltas();
ASSERT_EQ(scroll_info->scrolls.size(), 1u);
EXPECT_VECTOR_EQ(root->sent_scroll_delta(), scroll_delta + scroll_delta2);
ExpectContains(*scroll_info, root->id(), scroll_delta + scroll_delta2);
root->ScrollBy(gfx::Vector2d());
scroll_info = host_impl_->ProcessScrollDeltas();
EXPECT_EQ(root->sent_scroll_delta(), scroll_delta + scroll_delta2);
}
TEST_F(LayerTreeHostImplTest, ScrollRootCallsCommitAndRedraw) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, 10));
host_impl_->ScrollEnd();
EXPECT_TRUE(did_request_redraw_);
EXPECT_TRUE(did_request_commit_);
}
TEST_F(LayerTreeHostImplTest, ScrollWithoutRootLayer) {
// We should not crash when trying to scroll an empty layer tree.
EXPECT_EQ(InputHandler::ScrollIgnored,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
}
TEST_F(LayerTreeHostImplTest, ScrollWithoutRenderer) {
scoped_ptr<TestWebGraphicsContext3D> context_owned =
TestWebGraphicsContext3D::Create();
context_owned->set_context_lost(true);
scoped_ptr<FakeOutputSurface> output_surface(FakeOutputSurface::Create3d(
context_owned.Pass()));
// Initialization will fail.
EXPECT_FALSE(CreateHostImpl(DefaultSettings(),
output_surface.PassAs<OutputSurface>()));
SetupScrollAndContentsLayers(gfx::Size(100, 100));
// We should not crash when trying to scroll after the renderer initialization
// fails.
EXPECT_EQ(InputHandler::ScrollIgnored,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
}
TEST_F(LayerTreeHostImplTest, ReplaceTreeWhileScrolling) {
LayerImpl* scroll_layer = SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
// We should not crash if the tree is replaced while we are scrolling.
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
host_impl_->active_tree()->DetachLayerTree();
scroll_layer = SetupScrollAndContentsLayers(gfx::Size(100, 100));
// We should still be scrolling, because the scrolled layer also exists in the
// new tree.
gfx::Vector2d scroll_delta(0, 10);
host_impl_->ScrollBy(gfx::Point(), scroll_delta);
host_impl_->ScrollEnd();
scoped_ptr<ScrollAndScaleSet> scroll_info = host_impl_->ProcessScrollDeltas();
ExpectContains(*scroll_info, scroll_layer->id(), scroll_delta);
}
TEST_F(LayerTreeHostImplTest, ClearRootRenderSurfaceAndScroll) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
// We should be able to scroll even if the root layer loses its render surface
// after the most recent render.
host_impl_->active_tree()->root_layer()->ClearRenderSurface();
host_impl_->active_tree()->set_needs_update_draw_properties();
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
}
TEST_F(LayerTreeHostImplTest, WheelEventHandlers) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
LayerImpl* root = host_impl_->active_tree()->root_layer();
root->SetHaveWheelEventHandlers(true);
// With registered event handlers, wheel scrolls have to go to the main
// thread.
EXPECT_EQ(InputHandler::ScrollOnMainThread,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
// But gesture scrolls can still be handled.
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
}
TEST_F(LayerTreeHostImplTest, FlingOnlyWhenScrollingTouchscreen) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
// Ignore the fling since no layer is being scrolled
EXPECT_EQ(InputHandler::ScrollIgnored,
host_impl_->FlingScrollBegin());
// Start scrolling a layer
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
// Now the fling should go ahead since we've started scrolling a layer
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->FlingScrollBegin());
}
TEST_F(LayerTreeHostImplTest, FlingOnlyWhenScrollingTouchpad) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
// Ignore the fling since no layer is being scrolled
EXPECT_EQ(InputHandler::ScrollIgnored,
host_impl_->FlingScrollBegin());
// Start scrolling a layer
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
// Now the fling should go ahead since we've started scrolling a layer
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->FlingScrollBegin());
}
TEST_F(LayerTreeHostImplTest, NoFlingWhenScrollingOnMain) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
LayerImpl* root = host_impl_->active_tree()->root_layer();
root->SetShouldScrollOnMainThread(true);
// Start scrolling a layer
EXPECT_EQ(InputHandler::ScrollOnMainThread,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
// The fling should be ignored since there's no layer being scrolled impl-side
EXPECT_EQ(InputHandler::ScrollIgnored,
host_impl_->FlingScrollBegin());
}
TEST_F(LayerTreeHostImplTest, ShouldScrollOnMainThread) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
LayerImpl* root = host_impl_->active_tree()->root_layer();
root->SetShouldScrollOnMainThread(true);
EXPECT_EQ(InputHandler::ScrollOnMainThread,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
EXPECT_EQ(InputHandler::ScrollOnMainThread,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
}
TEST_F(LayerTreeHostImplTest, NonFastScrollableRegionBasic) {
SetupScrollAndContentsLayers(gfx::Size(200, 200));
host_impl_->SetViewportSize(gfx::Size(100, 100));
LayerImpl* root = host_impl_->active_tree()->root_layer();
root->SetContentsScale(2.f, 2.f);
root->SetNonFastScrollableRegion(gfx::Rect(0, 0, 50, 50));
DrawFrame();
// All scroll types inside the non-fast scrollable region should fail.
EXPECT_EQ(InputHandler::ScrollOnMainThread,
host_impl_->ScrollBegin(gfx::Point(25, 25),
InputHandler::Wheel));
EXPECT_EQ(InputHandler::ScrollOnMainThread,
host_impl_->ScrollBegin(gfx::Point(25, 25),
InputHandler::Gesture));
// All scroll types outside this region should succeed.
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(75, 75),
InputHandler::Wheel));
host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, 10));
host_impl_->ScrollEnd();
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(75, 75),
InputHandler::Gesture));
host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, 10));
host_impl_->ScrollEnd();
}
TEST_F(LayerTreeHostImplTest, NonFastScrollableRegionWithOffset) {
SetupScrollAndContentsLayers(gfx::Size(200, 200));
host_impl_->SetViewportSize(gfx::Size(100, 100));
LayerImpl* root = host_impl_->active_tree()->root_layer();
root->SetContentsScale(2.f, 2.f);
root->SetNonFastScrollableRegion(gfx::Rect(0, 0, 50, 50));
root->SetPosition(gfx::PointF(-25.f, 0.f));
DrawFrame();
// This point would fall into the non-fast scrollable region except that we've
// moved the layer down by 25 pixels.
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(40, 10),
InputHandler::Wheel));
host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, 1));
host_impl_->ScrollEnd();
// This point is still inside the non-fast region.
EXPECT_EQ(InputHandler::ScrollOnMainThread,
host_impl_->ScrollBegin(gfx::Point(10, 10),
InputHandler::Wheel));
}
TEST_F(LayerTreeHostImplTest, ScrollByReturnsCorrectValue) {
SetupScrollAndContentsLayers(gfx::Size(200, 200));
host_impl_->SetViewportSize(gfx::Size(100, 100));
DrawFrame();
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
// Trying to scroll to the left/top will not succeed.
EXPECT_FALSE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(-10, 0)));
EXPECT_FALSE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, -10)));
EXPECT_FALSE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(-10, -10)));
// Scrolling to the right/bottom will succeed.
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(10, 0)));
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, 10)));
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(10, 10)));
// Scrolling to left/top will now succeed.
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(-10, 0)));
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(0, -10)));
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(-10, -10)));
// Scrolling diagonally against an edge will succeed.
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(10, -10)));
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(-10, 0)));
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(-10, 10)));
// Trying to scroll more than the available space will also succeed.
EXPECT_TRUE(host_impl_->ScrollBy(gfx::Point(), gfx::Vector2d(5000, 5000)));
}
TEST_F(LayerTreeHostImplTest, ScrollVerticallyByPageReturnsCorrectValue) {
SetupScrollAndContentsLayers(gfx::Size(200, 2000));
host_impl_->SetViewportSize(gfx::Size(100, 1000));
DrawFrame();
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(),
InputHandler::Wheel));
// Trying to scroll without a vertical scrollbar will fail.
EXPECT_FALSE(host_impl_->ScrollVerticallyByPage(
gfx::Point(), SCROLL_FORWARD));
EXPECT_FALSE(host_impl_->ScrollVerticallyByPage(
gfx::Point(), SCROLL_BACKWARD));
scoped_ptr<PaintedScrollbarLayerImpl> vertical_scrollbar(
PaintedScrollbarLayerImpl::Create(
host_impl_->active_tree(),
20,
VERTICAL));
vertical_scrollbar->SetBounds(gfx::Size(15, 1000));
host_impl_->InnerViewportScrollLayer()->AddScrollbar(
vertical_scrollbar.get());
// Trying to scroll with a vertical scrollbar will succeed.
EXPECT_TRUE(host_impl_->ScrollVerticallyByPage(
gfx::Point(), SCROLL_FORWARD));
EXPECT_FLOAT_EQ(875.f,
host_impl_->InnerViewportScrollLayer()->ScrollDelta().y());
EXPECT_TRUE(host_impl_->ScrollVerticallyByPage(
gfx::Point(), SCROLL_BACKWARD));
}
// The user-scrollability breaks for zoomed-in pages. So disable this.
// http://crbug.com/322223
TEST_F(LayerTreeHostImplTest, DISABLED_ScrollWithUserUnscrollableLayers) {
LayerImpl* scroll_layer = SetupScrollAndContentsLayers(gfx::Size(200, 200));
host_impl_->SetViewportSize(gfx::Size(100, 100));
gfx::Size overflow_size(400, 400);
ASSERT_EQ(1u, scroll_layer->children().size());
LayerImpl* overflow = scroll_layer->children()[0];
overflow->SetBounds(overflow_size);
overflow->SetContentBounds(overflow_size);
overflow->SetScrollClipLayer(scroll_layer->parent()->id());
overflow->SetScrollOffset(gfx::Vector2d());
overflow->SetPosition(gfx::PointF());
overflow->SetAnchorPoint(gfx::PointF());
DrawFrame();
gfx::Point scroll_position(10, 10);
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(scroll_position, InputHandler::Wheel));
EXPECT_VECTOR_EQ(gfx::Vector2dF(), scroll_layer->TotalScrollOffset());
EXPECT_VECTOR_EQ(gfx::Vector2dF(), overflow->TotalScrollOffset());
gfx::Vector2dF scroll_delta(10, 10);
host_impl_->ScrollBy(scroll_position, scroll_delta);
host_impl_->ScrollEnd();
EXPECT_VECTOR_EQ(gfx::Vector2dF(), scroll_layer->TotalScrollOffset());
EXPECT_VECTOR_EQ(gfx::Vector2dF(10, 10), overflow->TotalScrollOffset());
overflow->set_user_scrollable_horizontal(false);
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(scroll_position, InputHandler::Wheel));
EXPECT_VECTOR_EQ(gfx::Vector2dF(), scroll_layer->TotalScrollOffset());
EXPECT_VECTOR_EQ(gfx::Vector2dF(10, 10), overflow->TotalScrollOffset());
host_impl_->ScrollBy(scroll_position, scroll_delta);
host_impl_->ScrollEnd();
EXPECT_VECTOR_EQ(gfx::Vector2dF(10, 0), scroll_layer->TotalScrollOffset());
EXPECT_VECTOR_EQ(gfx::Vector2dF(10, 20), overflow->TotalScrollOffset());
overflow->set_user_scrollable_vertical(false);
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(scroll_position, InputHandler::Wheel));
EXPECT_VECTOR_EQ(gfx::Vector2dF(10, 0), scroll_layer->TotalScrollOffset());
EXPECT_VECTOR_EQ(gfx::Vector2dF(10, 20), overflow->TotalScrollOffset());
host_impl_->ScrollBy(scroll_position, scroll_delta);
host_impl_->ScrollEnd();
EXPECT_VECTOR_EQ(gfx::Vector2dF(20, 10), scroll_layer->TotalScrollOffset());
EXPECT_VECTOR_EQ(gfx::Vector2dF(10, 20), overflow->TotalScrollOffset());
}
TEST_F(LayerTreeHostImplTest,
ClearRootRenderSurfaceAndHitTestTouchHandlerRegion) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
// We should be able to hit test for touch event handlers even if the root
// layer loses its render surface after the most recent render.
host_impl_->active_tree()->root_layer()->ClearRenderSurface();
host_impl_->active_tree()->set_needs_update_draw_properties();
EXPECT_EQ(host_impl_->HaveTouchEventHandlersAt(gfx::Point()), false);
}
TEST_F(LayerTreeHostImplTest, ImplPinchZoom) {
LayerImpl* scroll_layer = SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
EXPECT_EQ(scroll_layer, host_impl_->InnerViewportScrollLayer());
LayerImpl* container_layer = scroll_layer->scroll_clip_layer();
EXPECT_EQ(gfx::Size(50, 50), container_layer->bounds());
float min_page_scale = 1.f, max_page_scale = 4.f;
float page_scale_factor = 1.f;
// The impl-based pinch zoom should adjust the max scroll position.
{
host_impl_->active_tree()->SetPageScaleFactorAndLimits(
page_scale_factor, min_page_scale, max_page_scale);
host_impl_->active_tree()->SetPageScaleDelta(1.f);
scroll_layer->SetScrollDelta(gfx::Vector2d());
float page_scale_delta = 2.f;
gfx::Vector2dF expected_container_size_delta(
container_layer->bounds().width(), container_layer->bounds().height());
expected_container_size_delta.Scale((1.f - page_scale_delta) /
(page_scale_factor * page_scale_delta));
host_impl_->ScrollBegin(gfx::Point(50, 50), InputHandler::Gesture);
host_impl_->PinchGestureBegin();
host_impl_->PinchGestureUpdate(page_scale_delta, gfx::Point(50, 50));
// While the gesture is still active, the scroll layer should have a
// container size delta = container->bounds() * ((1.f -
// page_scale_delta)/())
EXPECT_EQ(expected_container_size_delta,
scroll_layer->FixedContainerSizeDelta());
host_impl_->PinchGestureEnd();
host_impl_->ScrollEnd();
EXPECT_TRUE(did_request_redraw_);
EXPECT_TRUE(did_request_commit_);
EXPECT_EQ(gfx::Size(50, 50), container_layer->bounds());
scoped_ptr<ScrollAndScaleSet> scroll_info =
host_impl_->ProcessScrollDeltas();
EXPECT_EQ(scroll_info->page_scale_delta, page_scale_delta);
EXPECT_EQ(gfx::Vector2d(75, 75).ToString(),
scroll_layer->MaxScrollOffset().ToString());
}
// Scrolling after a pinch gesture should always be in local space. The
// scroll deltas do not have the page scale factor applied.
{
host_impl_->active_tree()->SetPageScaleFactorAndLimits(
page_scale_factor, min_page_scale, max_page_scale);
host_impl_->active_tree()->SetPageScaleDelta(1.f);
scroll_layer->SetScrollDelta(gfx::Vector2d());
float page_scale_delta = 2.f;
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture);
host_impl_->PinchGestureBegin();
host_impl_->PinchGestureUpdate(page_scale_delta, gfx::Point());
host_impl_->PinchGestureEnd();
host_impl_->ScrollEnd();
gfx::Vector2d scroll_delta(0, 10);
EXPECT_EQ(InputHandler::ScrollStarted,
host_impl_->ScrollBegin(gfx::Point(5, 5),
InputHandler::Wheel));
host_impl_->ScrollBy(gfx::Point(), scroll_delta);
host_impl_->ScrollEnd();
scoped_ptr<ScrollAndScaleSet> scroll_info =
host_impl_->ProcessScrollDeltas();
ExpectContains(*scroll_info.get(),
scroll_layer->id(),
scroll_delta);
}
}
TEST_F(LayerTreeHostImplTest, PinchGesture) {
SetupScrollAndContentsLayers(gfx::Size(100, 100));
host_impl_->SetViewportSize(gfx::Size(50, 50));
DrawFrame();
LayerImpl* scroll_layer = host_impl_->InnerViewportScrollLayer();
DCHECK(scroll_layer);
float min_page_scale = 1.f;
float max_page_scale = 4.f;
// Basic pinch zoom in gesture
{
host_impl_->active_tree()->SetPageScaleFactorAndLimits(1.f,
min_page_scale,
max_page_scale);
scroll_layer->SetScrollDelta(gfx::Vector2d());
float page_scale_delta = 2.f;
host_impl_->ScrollBegin(gfx::Point(50, 50), InputHandler::Gesture);
host_impl_->PinchGestureBegin();
host_impl_->PinchGestureUpdate(page_scale_delta, gfx::Point(50, 50));
host_impl_->PinchGestureEnd();
host_impl_->ScrollEnd();
EXPECT_TRUE(did_request_redraw_);
EXPECT_TRUE(did_request_commit_);
scoped_ptr<ScrollAndScaleSet> scroll_info =
host_impl_->ProcessScrollDeltas();
EXPECT_EQ(scroll_info->page_scale_delta, page_scale_delta);
}
// Zoom-in clamping
{
host_impl_->active_tree()->SetPageScaleFactorAndLimits(1.f,
min_page_scale,
max_page_scale);
scroll_layer->SetScrollDelta(gfx::Vector2d());
float page_scale_delta = 10.f;
host_impl_->ScrollBegin(gfx::Point(50, 50), InputHandler::Gesture);
host_impl_->PinchGestureBegin();
host_impl_->PinchGestureUpdate(page_scale_delta, gfx::Point(50, 50));
host_impl_->PinchGestureEnd();
host_impl_->ScrollEnd();
scoped_ptr<ScrollAndScaleSet> scroll_info =
host_impl_->ProcessScrollDeltas();
EXPECT_EQ(scroll_info->page_scale_delta, max_page_scale);
}
// Zoom-out clamping
{
host_impl_->active_tree()->SetPageScaleFactorAndLimits(1.f,
min_page_scale,
max_page_scale);
scroll_layer->SetScrollDelta(gfx::Vector2d());
scroll_layer->SetScrollOffset(gfx::Vector2d(50, 50));
float page_scale_delta = 0.1f;
host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture);
host_impl_->PinchGestureBegin();
host_impl_->PinchGestureUpdate(page_scale_delta, gfx::Point());
host_impl_->PinchGestureEnd();
host_impl_->ScrollEnd();
scoped_ptr<ScrollAndScaleSet> scroll_info =
host_impl_->ProcessScrollDeltas();
EXPECT_EQ(scroll_info->page_scale_delta, min_page_scale);
EXPECT_TRUE(scroll_info->scrolls.empty());
}
// Two-finger panning should not happen based on pinch events only
{
host_impl_->active_tree()->SetPageScaleFactorAndLimits(1.f,
min_page_scale,
max_page_scale);
scroll_layer->SetScrollDelta(gfx::Vector2d());
scroll_layer->SetScrollOffset(gfx::Vector2d(20, 20));
float page_scale_delta = 1.f;
host_impl_->ScrollBegin(gfx::Point(10, 10), InputHandler::Gesture);
host_impl_->PinchGestureBegin();
host_impl_->PinchGestureUpdate(page_scale_delta, gfx::Point(10, 10));
host_impl_->PinchGestureUpdate(page_scale_delta, gfx::Point(20, 20));
host_impl_->PinchGestureEnd();
host_impl_->ScrollEnd();
scoped_ptr<ScrollAndScaleSet> scroll_info =
host_impl_->ProcessScrollDeltas();