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// Copyright 2018 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/nine_patch_thumb_scrollbar_layer.h"
#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/test_task_graph_runner.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
namespace {
class MockScrollbar : public FakeScrollbar {
public:
MockScrollbar() {
set_should_paint(true);
set_has_thumb(true);
set_is_overlay(true);
}
void PaintTrackAndButtons(PaintCanvas&, const gfx::Rect&) override {
paint_tickmarks_called_ = true;
}
bool UsesNinePatchThumbResource() const override { return true; }
gfx::Size NinePatchThumbCanvasSize() const override {
return gfx::Size(10, 10);
}
bool PaintTickmarksCalled() { return paint_tickmarks_called_; }
void SetPaintTickmarksCalled(bool called) {
paint_tickmarks_called_ = called;
}
private:
~MockScrollbar() override = default;
bool paint_tickmarks_called_ = false;
};
TEST(NinePatchThumbScrollbarLayerTest, PaintTickmarks) {
FakeLayerTreeHostClient fake_client_;
TestTaskGraphRunner task_graph_runner_;
auto animation_host = AnimationHost::CreateForTesting(ThreadInstance::kMain);
auto layer_tree_host = FakeLayerTreeHost::Create(
&fake_client_, &task_graph_runner_, animation_host.get());
auto scrollbar = base::MakeRefCounted<MockScrollbar>();
scrollbar->set_has_tickmarks(false);
scoped_refptr<NinePatchThumbScrollbarLayer> scrollbar_layer =
NinePatchThumbScrollbarLayer::Create(scrollbar);
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());
// Request no paint when initialization.
scrollbar_layer->Update();
EXPECT_FALSE(scrollbar->PaintTickmarksCalled());
// The next update will paint nothing because still no tickmarks applied.
scrollbar_layer->Update();
EXPECT_FALSE(scrollbar->PaintTickmarksCalled());
// Enable the tickmarks.
scrollbar->set_has_tickmarks(true);
scrollbar_layer->Update();
EXPECT_TRUE(scrollbar->PaintTickmarksCalled());
scrollbar->SetPaintTickmarksCalled(false);
// Disable the tickmarks. No paint.
scrollbar->set_has_tickmarks(false);
scrollbar_layer->Update();
EXPECT_FALSE(scrollbar->PaintTickmarksCalled());
}
} // namespace
} // namespace cc
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