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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/layers/painted_scrollbar_layer.h"
#include <memory>
#include "cc/animation/animation_host.h"
#include "cc/test/fake_layer_tree_host.h"
#include "cc/test/fake_layer_tree_host_client.h"
#include "cc/test/fake_scrollbar.h"
#include "cc/test/fake_scrollbar_layer.h"
#include "cc/test/layer_test_common.h"
#include "cc/test/test_task_graph_runner.h"
#include "testing/gmock/include/gmock/gmock.h"
using ::testing::Mock;
using ::testing::_;
namespace cc {
namespace {
class PaintedScrollbarLayerTest : public testing::Test {
protected:
void SetUp() override {
animation_host_ = AnimationHost::CreateForTesting(ThreadInstance::kMain);
layer_tree_host_ = FakeLayerTreeHost::Create(
&fake_client_, &task_graph_runner_, animation_host_.get());
}
FakeLayerTreeHostClient fake_client_;
TestTaskGraphRunner task_graph_runner_;
std::unique_ptr<AnimationHost> animation_host_;
std::unique_ptr<FakeLayerTreeHost> layer_tree_host_;
};
class MockScrollbar : public FakeScrollbar {
public:
MockScrollbar() {
set_should_paint(true);
set_has_thumb(true);
set_is_overlay(false);
}
MOCK_METHOD2(PaintThumb, void(PaintCanvas&, const gfx::Rect&));
MOCK_METHOD2(PaintTrackAndButtons, void(PaintCanvas&, const gfx::Rect&));
MOCK_METHOD(SkColor4f, ThumbColor, (), (const, override));
MOCK_METHOD(void, ClearThumbNeedsRepaint, (), (override));
private:
~MockScrollbar() override = default;
};
TEST_F(PaintedScrollbarLayerTest, NeedsPaint) {
auto scrollbar = base::MakeRefCounted<MockScrollbar>();
scoped_refptr<PaintedScrollbarLayer> scrollbar_layer =
PaintedScrollbarLayer::Create(scrollbar);
scrollbar_layer->SetIsDrawable(true);
scrollbar_layer->SetBounds(gfx::Size(100, 100));
layer_tree_host_->SetRootLayer(scrollbar_layer);
UpdateDrawProperties(layer_tree_host_.get());
EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
// Request no paint, but expect them to be painted because they have not
// yet been initialized.
scrollbar->set_thumb_needs_repaint(false);
scrollbar->set_track_and_buttons_need_repaint(false);
EXPECT_CALL(*scrollbar, PaintThumb(_, _)).Times(1);
EXPECT_CALL(*scrollbar, PaintTrackAndButtons(_, _)).Times(1);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar.get());
// The next update will paint nothing because the first update caused a paint.
EXPECT_CALL(*scrollbar, PaintThumb(_, _)).Times(0);
EXPECT_CALL(*scrollbar, PaintTrackAndButtons(_, _)).Times(0);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar.get());
// Enable the thumb.
EXPECT_CALL(*scrollbar, PaintThumb(_, _)).Times(1);
EXPECT_CALL(*scrollbar, PaintTrackAndButtons(_, _)).Times(0);
scrollbar->set_thumb_needs_repaint(true);
scrollbar->set_track_and_buttons_need_repaint(false);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar.get());
// Enable the track.
EXPECT_CALL(*scrollbar, PaintThumb(_, _)).Times(0);
EXPECT_CALL(*scrollbar, PaintTrackAndButtons(_, _)).Times(1);
scrollbar->set_thumb_needs_repaint(false);
scrollbar->set_track_and_buttons_need_repaint(true);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar.get());
}
TEST_F(PaintedScrollbarLayerTest, InternalContentBounds) {
auto scrollbar = base::MakeRefCounted<FakeScrollbar>();
auto scrollbar_layer = PaintedScrollbarLayer::Create(scrollbar);
scrollbar_layer->SetIsDrawable(true);
scrollbar_layer->SetBounds(gfx::Size(10, 100));
layer_tree_host_->SetRootLayer(scrollbar_layer);
UpdateDrawProperties(layer_tree_host_.get());
EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
scrollbar_layer->Update();
EXPECT_EQ(gfx::Size(10, 100), scrollbar_layer->internal_content_bounds());
layer_tree_host_->SetViewportRectAndScale(
layer_tree_host_->device_viewport_rect(), 2.0f,
layer_tree_host_->local_surface_id_from_parent());
UpdateDrawProperties(layer_tree_host_.get());
scrollbar_layer->Update();
EXPECT_EQ(gfx::Size(20, 200), scrollbar_layer->internal_content_bounds());
layer_tree_host_->SetViewportRectAndScale(
layer_tree_host_->device_viewport_rect(), 0.1f,
layer_tree_host_->local_surface_id_from_parent());
UpdateDrawProperties(layer_tree_host_.get());
scrollbar_layer->Update();
EXPECT_EQ(gfx::Size(10, 100), scrollbar_layer->internal_content_bounds());
}
TEST_F(PaintedScrollbarLayerTest, SolidColorThumbDoesntGenerateThumbBitmap) {
auto scrollbar = base::MakeRefCounted<MockScrollbar>();
scrollbar->set_uses_solid_color_thumb(true);
scoped_refptr<PaintedScrollbarLayer> scrollbar_layer =
PaintedScrollbarLayer::Create(scrollbar);
scrollbar_layer->SetIsDrawable(true);
scrollbar_layer->SetBounds(gfx::Size(100, 100));
layer_tree_host_->SetRootLayer(scrollbar_layer);
UpdateDrawProperties(layer_tree_host_.get());
// Start not needing any paint.
scrollbar->set_track_and_buttons_need_repaint(false);
scrollbar->set_thumb_needs_repaint(false);
// Both scrollbar parts should be "painted" on initialization. The thumb
// should not receive a Paint call, but instead the thumb's color should be
// initialized to pass to the Impl layer.
EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
EXPECT_CALL(*scrollbar, PaintThumb(_, _)).Times(0);
EXPECT_CALL(*scrollbar, PaintTrackAndButtons(_, _)).Times(1);
EXPECT_CALL(*scrollbar, ThumbColor())
.Times(1)
.WillOnce(testing::Return(SkColor4f::FromColor(SK_ColorRED)));
EXPECT_CALL(*scrollbar, ClearThumbNeedsRepaint()).Times(1);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar.get());
// The next update will paint nothing because the first update caused a paint.
EXPECT_CALL(*scrollbar, PaintThumb(_, _)).Times(0);
EXPECT_CALL(*scrollbar, PaintTrackAndButtons(_, _)).Times(0);
EXPECT_CALL(*scrollbar, ThumbColor()).Times(0);
EXPECT_CALL(*scrollbar, ClearThumbNeedsRepaint()).Times(0);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar.get());
// Set the thumb needs repaint and verify it queries the thumb color and
// clears the needs repaint variable.
scrollbar->set_thumb_needs_repaint(true);
EXPECT_CALL(*scrollbar, PaintThumb(_, _)).Times(0);
EXPECT_CALL(*scrollbar, PaintTrackAndButtons(_, _)).Times(0);
EXPECT_CALL(*scrollbar, ThumbColor()).Times(1);
EXPECT_CALL(*scrollbar, ClearThumbNeedsRepaint()).Times(1);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar.get());
}
} // namespace
} // namespace cc
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