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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/content_layer.h"
#include "cc/bitmap_content_layer_updater.h"
#include "cc/content_layer_client.h"
#include "cc/rendering_stats.h"
#include "cc/resource_update_queue.h"
#include "cc/test/geometry_test_utils.h"
#include "skia/ext/platform_canvas.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/rect_conversions.h"
using namespace WebKit;
namespace cc {
namespace {
class FakeContentLayer : public ContentLayer {
public:
explicit FakeContentLayer(ContentLayerClient* client) : ContentLayer(client) { }
virtual void setNeedsDisplayRect(const gfx::RectF& dirtyRect) OVERRIDE
{
m_lastDirtyRect = dirtyRect;
ContentLayer::setNeedsDisplayRect(dirtyRect);
}
gfx::RectF lastDirtyRect() const { return m_lastDirtyRect; }
protected:
virtual ~FakeContentLayer() { }
virtual void createUpdaterIfNeeded() OVERRIDE { }
private:
gfx::RectF m_lastDirtyRect;
};
class MockContentLayerClient : public ContentLayerClient {
public:
explicit MockContentLayerClient(gfx::Rect opaqueLayerRect)
: m_opaqueLayerRect(opaqueLayerRect)
{
}
virtual void paintContents(SkCanvas*, const gfx::Rect&, gfx::RectF& opaque) OVERRIDE
{
opaque = gfx::RectF(m_opaqueLayerRect);
}
private:
gfx::Rect m_opaqueLayerRect;
};
TEST(ContentLayerTest, ContentLayerPainterWithDeviceScale)
{
float contentsScale = 2;
gfx::Rect contentRect(10, 10, 100, 100);
gfx::Rect opaqueRectInLayerSpace(5, 5, 20, 20);
gfx::RectF opaqueRectInContentSpace = gfx::ScaleRect(opaqueRectInLayerSpace, contentsScale, contentsScale);
MockContentLayerClient client(opaqueRectInLayerSpace);
scoped_refptr<BitmapContentLayerUpdater> updater = BitmapContentLayerUpdater::create(ContentLayerPainter::create(&client).PassAs<LayerPainter>());
gfx::Rect resultingOpaqueRect;
RenderingStats stats;
updater->prepareToUpdate(contentRect, gfx::Size(256, 256), contentsScale, contentsScale, resultingOpaqueRect, stats);
EXPECT_RECT_EQ(gfx::ToEnclosingRect(opaqueRectInContentSpace), resultingOpaqueRect);
}
TEST(ContentLayerTest, UseLCDTextEnableCount)
{
scoped_refptr<FakeContentLayer> layer = new FakeContentLayer(NULL);
layer->setBounds(gfx::Size(100, 100));
ResourceUpdateQueue queue;
RenderingStats stats;
// By default LCD text is disabled.
EXPECT_FALSE(layer->useLCDText());
// LCD text can be enabled once.
layer->drawProperties().can_use_lcd_text = true;
layer->update(queue, NULL, stats);
EXPECT_TRUE(layer->useLCDText());
// LCD text can always be disabled.
layer->drawProperties().can_use_lcd_text = false;
layer->update(queue, NULL, stats);
EXPECT_FALSE(layer->useLCDText());
// LCD text cannot be enabled anymore.
layer->drawProperties().can_use_lcd_text = true;
layer->update(queue, NULL, stats);
EXPECT_FALSE(layer->useLCDText());
}
TEST(ContentLayerTest, UseLCDTextChangeTriggersRepaint)
{
scoped_refptr<FakeContentLayer> layer = new FakeContentLayer(NULL);
layer->setBounds(gfx::Size(100, 100));
gfx::RectF dirtyRect(100, 100);
ResourceUpdateQueue queue;
RenderingStats stats;
// By default LCD text is disabled.
EXPECT_FALSE(layer->useLCDText());
// Enable LCD text and verify that it triggers invalidation.
layer->drawProperties().can_use_lcd_text = true;
layer->update(queue, NULL, stats);
EXPECT_TRUE(layer->useLCDText());
EXPECT_EQ(dirtyRect, layer->lastDirtyRect());
// Reset dirty rect.
layer->setNeedsDisplayRect(gfx::RectF());
EXPECT_EQ(gfx::RectF(), layer->lastDirtyRect());
// Disable LCD text and verify that it triggers invalidation.
layer->drawProperties().can_use_lcd_text = false;
layer->update(queue, NULL, stats);
EXPECT_FALSE(layer->useLCDText());
EXPECT_EQ(dirtyRect, layer->lastDirtyRect());
}
} // namespace
} // namespace cc
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