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// Copyright 2015 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/layers/painted_scrollbar_layer.h"
#include "cc/layers/layer_settings.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/test_task_graph_runner.h"
#include "testing/gmock/include/gmock/gmock.h"
using ::testing::Mock;
using ::testing::_;
namespace cc {
namespace {
class MockScrollbar : public FakeScrollbar {
public:
MockScrollbar() : FakeScrollbar(true, true, true) {}
MOCK_METHOD3(PaintPart,
void(SkCanvas* canvas,
ScrollbarPart part,
const gfx::Rect& content_rect));
};
TEST(PaintedScrollbarLayerTest, NeedsPaint) {
FakeLayerTreeHostClient fake_client_(FakeLayerTreeHostClient::DIRECT_3D);
TestTaskGraphRunner task_graph_runner_;
scoped_ptr<FakeLayerTreeHost> layer_tree_host_;
LayerSettings layer_settings_;
layer_tree_host_ =
FakeLayerTreeHost::Create(&fake_client_, &task_graph_runner_);
RendererCapabilities renderer_capabilities;
renderer_capabilities.max_texture_size = 2048;
layer_tree_host_->set_renderer_capabilities(renderer_capabilities);
MockScrollbar* scrollbar = new MockScrollbar();
scoped_refptr<PaintedScrollbarLayer> scrollbar_layer =
PaintedScrollbarLayer::Create(layer_settings_,
scoped_ptr<Scrollbar>(scrollbar), 1);
scrollbar_layer->SetIsDrawable(true);
scrollbar_layer->SetBounds(gfx::Size(100, 100));
layer_tree_host_->SetRootLayer(scrollbar_layer);
EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
scrollbar_layer->SavePaintProperties();
// Request no paint, but expect them to be painted because they have not
// yet been initialized.
scrollbar->set_needs_paint_thumb(false);
scrollbar->set_needs_paint_track(false);
EXPECT_CALL(*scrollbar, PaintPart(_, THUMB, _)).Times(1);
EXPECT_CALL(*scrollbar, PaintPart(_, TRACK, _)).Times(1);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar);
// The next update will paint nothing because the first update caused a paint.
EXPECT_CALL(*scrollbar, PaintPart(_, THUMB, _)).Times(0);
EXPECT_CALL(*scrollbar, PaintPart(_, TRACK, _)).Times(0);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar);
// Enable the thumb.
EXPECT_CALL(*scrollbar, PaintPart(_, THUMB, _)).Times(1);
EXPECT_CALL(*scrollbar, PaintPart(_, TRACK, _)).Times(0);
scrollbar->set_needs_paint_thumb(true);
scrollbar->set_needs_paint_track(false);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar);
// Enable the track.
EXPECT_CALL(*scrollbar, PaintPart(_, THUMB, _)).Times(0);
EXPECT_CALL(*scrollbar, PaintPart(_, TRACK, _)).Times(1);
scrollbar->set_needs_paint_thumb(false);
scrollbar->set_needs_paint_track(true);
scrollbar_layer->Update();
Mock::VerifyAndClearExpectations(scrollbar);
}
} // namespace
} // namespace cc
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