1 /* 2 * Copyright (C) 2010 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "config.h" 32 33 #include "core/platform/DragImage.h" 34 35 #include "core/platform/graphics/Image.h" 36 #include "core/platform/graphics/IntSize.h" 37 #include "core/platform/graphics/skia/NativeImageSkia.h" 38 #include "third_party/skia/include/core/SkBitmap.h" 39 #include "wtf/OwnPtr.h" 40 #include "wtf/PassOwnPtr.h" 41 #include "wtf/PassRefPtr.h" 42 #include "wtf/RefPtr.h" 43 44 #include <gtest/gtest.h> 45 46 using namespace WebCore; 47 48 namespace { 49 50 class TestImage : public Image { 51 public: 52 53 static PassRefPtr<TestImage> create(const IntSize& size) 54 { 55 return adoptRef(new TestImage(size)); 56 } 57 58 explicit TestImage(const IntSize& size) 59 : Image(0) 60 , m_size(size) 61 { 62 m_nativeImage = NativeImageSkia::create(); 63 m_nativeImage->bitmap().setConfig(SkBitmap::kARGB_8888_Config, 64 size.width(), size.height(), 0); 65 m_nativeImage->bitmap().allocPixels(); 66 } 67 68 virtual IntSize size() const OVERRIDE 69 { 70 return m_size; 71 } 72 73 virtual PassRefPtr<NativeImageSkia> nativeImageForCurrentFrame() OVERRIDE 74 { 75 if (m_size.isZero()) 76 return 0; 77 78 return m_nativeImage; 79 } 80 81 // Stub implementations of pure virtual Image functions. 82 virtual void destroyDecodedData(bool) OVERRIDE 83 { 84 } 85 86 virtual unsigned decodedSize() const OVERRIDE 87 { 88 return 0u; 89 } 90 91 virtual bool currentFrameKnownToBeOpaque() OVERRIDE 92 { 93 return false; 94 } 95 96 virtual void draw(GraphicsContext*, const FloatRect&, const FloatRect&, CompositeOperator, BlendMode) OVERRIDE 97 { 98 } 99 100 private: 101 102 IntSize m_size; 103 104 RefPtr<NativeImageSkia> m_nativeImage; 105 }; 106 107 TEST(DragImageTest, NullHandling) 108 { 109 EXPECT_FALSE(DragImage::create(0)); 110 111 RefPtr<TestImage> nullTestImage(TestImage::create(IntSize())); 112 EXPECT_FALSE(DragImage::create(nullTestImage.get())); 113 } 114 115 TEST(DragImageTest, NonNullHandling) 116 { 117 RefPtr<TestImage> testImage(TestImage::create(IntSize(2, 2))); 118 OwnPtr<DragImage> dragImage = DragImage::create(testImage.get()); 119 ASSERT_TRUE(dragImage); 120 121 dragImage->scale(0.5, 0.5); 122 IntSize size = dragImage->size(); 123 EXPECT_EQ(1, size.width()); 124 EXPECT_EQ(1, size.height()); 125 126 dragImage->dissolveToFraction(0.5); 127 } 128 129 TEST(DragImageTest, CreateDragImage) 130 { 131 { 132 // Tests that the DrageImage implementation doesn't choke on null values 133 // of nativeImageForCurrentFrame(). 134 RefPtr<TestImage> testImage(TestImage::create(IntSize())); 135 EXPECT_FALSE(DragImage::create(testImage.get())); 136 } 137 138 { 139 // Tests that the drag image is a deep copy. 140 RefPtr<TestImage> testImage(TestImage::create(IntSize(1, 1))); 141 OwnPtr<DragImage> dragImage = DragImage::create(testImage.get()); 142 ASSERT_TRUE(dragImage); 143 SkAutoLockPixels lock1(dragImage->bitmap()), lock2(testImage->nativeImageForCurrentFrame()->bitmap()); 144 EXPECT_NE(dragImage->bitmap().getPixels(), testImage->nativeImageForCurrentFrame()->bitmap().getPixels()); 145 } 146 } 147 148 } // anonymous namespace 149