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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/contents_scaling_layer.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& dirtyRect) OVERRIDE {
m_lastNeedsDisplayRect = dirtyRect;
ContentsScalingLayer::setNeedsDisplayRect(dirtyRect);
}
void resetNeedsDisplay() {
m_needsDisplay = false;
}
const gfx::RectF& lastNeedsDisplayRect() const {
return m_lastNeedsDisplayRect;
}
void updateContentsScale(float contentsScale) {
// Simulate calcDrawProperties.
calculateContentsScale(
contentsScale,
false, // animating_transform_to_screen
&drawProperties().contents_scale_x,
&drawProperties().contents_scale_y,
&drawProperties().content_bounds);
}
private:
virtual ~MockContentsScalingLayer() {
}
gfx::RectF m_lastNeedsDisplayRect;
};
void calcDrawProps(Layer* root, float deviceScale)
{
std::vector<scoped_refptr<Layer> > renderSurfaceLayerList;
LayerTreeHostCommon::calculateDrawProperties(
root,
gfx::Size(500, 500),
deviceScale,
1,
1024,
false,
renderSurfaceLayerList);
}
TEST(ContentsScalingLayerTest, checkContentsBounds) {
scoped_refptr<MockContentsScalingLayer> testLayer =
make_scoped_refptr(new MockContentsScalingLayer());
scoped_refptr<Layer> root = Layer::create();
root->addChild(testLayer);
testLayer->setBounds(gfx::Size(320, 240));
calcDrawProps(root, 1.0);
EXPECT_FLOAT_EQ(1.0, testLayer->contentsScaleX());
EXPECT_FLOAT_EQ(1.0, testLayer->contentsScaleY());
EXPECT_EQ(320, testLayer->contentBounds().width());
EXPECT_EQ(240, testLayer->contentBounds().height());
calcDrawProps(root, 2.0);
EXPECT_EQ(640, testLayer->contentBounds().width());
EXPECT_EQ(480, testLayer->contentBounds().height());
testLayer->setBounds(gfx::Size(10, 20));
calcDrawProps(root, 2.0);
EXPECT_EQ(20, testLayer->contentBounds().width());
EXPECT_EQ(40, testLayer->contentBounds().height());
calcDrawProps(root, 1.33f);
EXPECT_EQ(14, testLayer->contentBounds().width());
EXPECT_EQ(27, testLayer->contentBounds().height());
}
} // namespace
} // namespace cc
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