third_party/WebKit/Source/platform/graphics/ImageLayerChromiumTest.cpp

   1 /*
   2  * Copyright (C) 2011 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1.  Redistributions of source code must retain the above copyright
   8  *     notice, this list of conditions and the following disclaimer.
   9  * 2.  Redistributions in binary form must reproduce the above copyright
  10  *     notice, this list of conditions and the following disclaimer in the
  11  *     documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24
  25 #include "config.h"
  26 #include "platform/graphics/Image.h"
  27
  28 #include "platform/graphics/GraphicsLayer.h"
  29 #include "third_party/skia/include/core/SkImage.h"
  30 #include "third_party/skia/include/core/SkSurface.h"
  31 #include "wtf/PassOwnPtr.h"
  32 #include <gtest/gtest.h>
  33
  34 namespace blink {
  35
  36 namespace {
  37
  38 class MockGraphicsLayerClient : public GraphicsLayerClient {
  39 public:
  40     void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect&) override { }
  41     String debugName(const GraphicsLayer*) override { return String(); }
  42 };
  43
  44 class TestImage : public Image {
  45 public:
  46     static PassRefPtr<TestImage> create(const IntSize& size, bool isOpaque)
  47     {
  48         return adoptRef(new TestImage(size, isOpaque));
  49     }
  50
  51     TestImage(const IntSize& size, bool isOpaque)
  52         : Image(0)
  53         , m_size(size)
  54     {
  55         RefPtr<SkSurface> surface = adoptRef(SkSurface::NewRaster(SkImageInfo::MakeN32(
  56             size.width(), size.height(), isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType)));
  57         if (!surface)
  58             return;
  59
  60         surface->getCanvas()->clear(SK_ColorTRANSPARENT);
  61         m_image = adoptRef(surface->newImageSnapshot());
  62     }
  63
  64     bool isBitmapImage() const override
  65     {
  66         return true;
  67     }
  68
  69     bool currentFrameKnownToBeOpaque() override
  70     {
  71         return m_image->isOpaque();
  72     }
  73
  74     IntSize size() const override
  75     {
  76         return m_size;
  77     }
  78
  79     PassRefPtr<SkImage> imageForCurrentFrame() override
  80     {
  81         return m_image;
  82     }
  83
  84     // Stub implementations of pure virtual Image functions.
  85     void destroyDecodedData(bool) override
  86     {
  87     }
  88
  89     void draw(SkCanvas*, const SkPaint&, const FloatRect&, const FloatRect&, RespectImageOrientationEnum, ImageClampingMode) override
  90     {
  91     }
  92
  93 private:
  94     IntSize m_size;
  95     RefPtr<SkImage> m_image;
  96 };
  97
  98 class GraphicsLayerForTesting : public GraphicsLayer {
  99 public:
 100     explicit GraphicsLayerForTesting(GraphicsLayerClient* client)
 101         : GraphicsLayer(client) { }
 102
 103     WebLayer* contentsLayer() const { return GraphicsLayer::contentsLayer(); }
 104 };
 105
 106 } // anonymous namespace
 107
 108 TEST(ImageLayerChromiumTest, imageLayerContentReset)
 109 {
 110     MockGraphicsLayerClient client;
 111     OwnPtr<GraphicsLayerForTesting> graphicsLayer = adoptPtr(new GraphicsLayerForTesting(&client));
 112     ASSERT_TRUE(graphicsLayer.get());
 113
 114     ASSERT_FALSE(graphicsLayer->hasContentsLayer());
 115     ASSERT_FALSE(graphicsLayer->contentsLayer());
 116
 117     RefPtr<Image> image = TestImage::create(IntSize(100, 100), false);
 118     ASSERT_TRUE(image.get());
 119
 120     graphicsLayer->setContentsToImage(image.get());
 121     ASSERT_TRUE(graphicsLayer->hasContentsLayer());
 122     ASSERT_TRUE(graphicsLayer->contentsLayer());
 123
 124     graphicsLayer->setContentsToImage(0);
 125     ASSERT_FALSE(graphicsLayer->hasContentsLayer());
 126     ASSERT_FALSE(graphicsLayer->contentsLayer());
 127 }
 128
 129 TEST(ImageLayerChromiumTest, opaqueImages)
 130 {
 131     MockGraphicsLayerClient client;
 132     OwnPtr<GraphicsLayerForTesting> graphicsLayer = adoptPtr(new GraphicsLayerForTesting(&client));
 133     ASSERT_TRUE(graphicsLayer.get());
 134
 135     RefPtr<Image> opaqueImage = TestImage::create(IntSize(100, 100), true /* opaque */);
 136     ASSERT_TRUE(opaqueImage.get());
 137     RefPtr<Image> nonOpaqueImage = TestImage::create(IntSize(100, 100), false /* opaque */);
 138     ASSERT_TRUE(nonOpaqueImage.get());
 139
 140     ASSERT_FALSE(graphicsLayer->contentsLayer());
 141
 142     graphicsLayer->setContentsToImage(opaqueImage.get());
 143     ASSERT_TRUE(graphicsLayer->contentsLayer()->opaque());
 144
 145     graphicsLayer->setContentsToImage(nonOpaqueImage.get());
 146     ASSERT_FALSE(graphicsLayer->contentsLayer()->opaque());
 147 }
 148
 149 } // namespace blink