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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/layers/contents_scaling_layer.h"
#include <vector>
#include "cc/test/fake_layer_tree_host.h"
#include "cc/test/geometry_test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
namespace {
class MockContentsScalingLayer : public ContentsScalingLayer {
public:
MockContentsScalingLayer()
: ContentsScalingLayer() {}
virtual void SetNeedsDisplayRect(const gfx::RectF& dirty_rect) OVERRIDE {
last_needs_display_rect_ = dirty_rect;
ContentsScalingLayer::SetNeedsDisplayRect(dirty_rect);
}
const gfx::RectF& LastNeedsDisplayRect() const {
return last_needs_display_rect_;
}
private:
virtual ~MockContentsScalingLayer() {}
gfx::RectF last_needs_display_rect_;
};
static void CalcDrawProps(FakeLayerTreeHost* host, float device_scale_factor) {
RenderSurfaceLayerList render_surface_layer_list;
LayerTreeHostCommon::CalcDrawPropsMainInputsForTesting inputs(
host->root_layer(), gfx::Size(500, 500), &render_surface_layer_list);
inputs.device_scale_factor = device_scale_factor;
LayerTreeHostCommon::CalculateDrawProperties(&inputs);
}
TEST(ContentsScalingLayerTest, CheckContentsBounds) {
scoped_ptr<FakeLayerTreeHost> host = FakeLayerTreeHost::Create();
scoped_refptr<MockContentsScalingLayer> test_layer =
make_scoped_refptr(new MockContentsScalingLayer());
scoped_refptr<Layer> root = Layer::Create();
root->AddChild(test_layer);
host->SetRootLayer(root);
test_layer->SetBounds(gfx::Size(320, 240));
CalcDrawProps(host.get(), 1.f);
EXPECT_FLOAT_EQ(1.f, test_layer->contents_scale_x());
EXPECT_FLOAT_EQ(1.f, test_layer->contents_scale_y());
EXPECT_EQ(320, test_layer->content_bounds().width());
EXPECT_EQ(240, test_layer->content_bounds().height());
CalcDrawProps(host.get(), 2.f);
EXPECT_EQ(640, test_layer->content_bounds().width());
EXPECT_EQ(480, test_layer->content_bounds().height());
test_layer->SetBounds(gfx::Size(10, 20));
CalcDrawProps(host.get(), 2.f);
EXPECT_EQ(20, test_layer->content_bounds().width());
EXPECT_EQ(40, test_layer->content_bounds().height());
CalcDrawProps(host.get(), 1.33f);
EXPECT_EQ(14, test_layer->content_bounds().width());
EXPECT_EQ(27, test_layer->content_bounds().height());
}
} // namespace
} // namespace cc
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