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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
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      4  * Redistribution and use in source and binary forms, with or without
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     10  *     * Redistributions in binary form must reproduce the above
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     16  * this software without specific prior written permission.
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     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 
     33 #include <gtest/gtest.h>
     34 
     35 #include "DragImage.h"
     36 #include "Image.h"
     37 #include "NativeImageSkia.h"
     38 
     39 using namespace WebCore;
     40 
     41 namespace {
     42 
     43 class TestImage : public Image {
     44 public:
     45 
     46     static PassRefPtr<TestImage> create(const IntSize& size)
     47     {
     48         return adoptRef(new TestImage(size));
     49     }
     50 
     51     explicit TestImage(const IntSize& size)
     52         : Image(0)
     53         , m_size(size)
     54     {
     55         m_nativeImage = new NativeImageSkia();
     56         m_nativeImage->setConfig(SkBitmap::kARGB_8888_Config,
     57                                  size.width(), size.height(), 0);
     58         m_nativeImage->allocPixels();
     59     }
     60 
     61     virtual ~TestImage()
     62     {
     63         delete m_nativeImage;
     64     }
     65 
     66     virtual IntSize size() const
     67     {
     68         return m_size;
     69     }
     70 
     71     virtual NativeImagePtr nativeImageForCurrentFrame()
     72     {
     73         if (m_size.isZero())
     74             return 0;
     75 
     76         return m_nativeImage;
     77     }
     78 
     79     // Stub implementations of pure virtual Image functions.
     80     virtual void destroyDecodedData(bool)
     81     {
     82     }
     83 
     84     virtual unsigned int decodedSize() const
     85     {
     86         return 0u;
     87     }
     88 
     89     virtual void draw(WebCore::GraphicsContext*, const WebCore::FloatRect&,
     90                       const WebCore::FloatRect&, WebCore::ColorSpace,
     91                       WebCore::CompositeOperator)
     92     {
     93     }
     94 
     95 private:
     96 
     97     IntSize m_size;
     98 
     99     NativeImagePtr m_nativeImage;
    100 };
    101 
    102 TEST(DragImageTest, NullHandling)
    103 {
    104     EXPECT_FALSE(createDragImageFromImage(0));
    105 
    106     deleteDragImage(0);
    107     EXPECT_TRUE(dragImageSize(0).isZero());
    108     EXPECT_FALSE(scaleDragImage(0, FloatSize(0.5, 0.5)));
    109     EXPECT_FALSE(dissolveDragImageToFraction(0, 0.5));
    110     EXPECT_FALSE(createDragImageFromImage(0));
    111     EXPECT_FALSE(createDragImageIconForCachedImage(0));
    112 }
    113 
    114 TEST(DragImageTest, NonNullHandling)
    115 {
    116     RefPtr<TestImage> testImage(TestImage::create(IntSize(2, 2)));
    117     DragImageRef dragImage = createDragImageFromImage(testImage.get());
    118     ASSERT_TRUE(dragImage);
    119 
    120     dragImage = scaleDragImage(dragImage, FloatSize(0.5, 0.5));
    121     ASSERT_TRUE(dragImage);
    122     IntSize size = dragImageSize(dragImage);
    123     EXPECT_EQ(1, size.width());
    124     EXPECT_EQ(1, size.height());
    125 
    126     dragImage = dissolveDragImageToFraction(dragImage, 0.5);
    127     ASSERT_TRUE(dragImage);
    128 
    129     deleteDragImage(dragImage);
    130 }
    131 
    132 TEST(DragImageTest, CreateDragImage)
    133 {
    134     {
    135         // Tests that the DrageImage implementation doesn't choke on null values
    136         // of nativeImageForCurrentFrame().
    137         RefPtr<TestImage> testImage(TestImage::create(IntSize()));
    138         EXPECT_FALSE(createDragImageFromImage(testImage.get()));
    139     }
    140 
    141     {
    142         // Tests that the drag image is a deep copy.
    143         RefPtr<TestImage> testImage(TestImage::create(IntSize(1, 1)));
    144         DragImageRef dragImage = createDragImageFromImage(testImage.get());
    145         ASSERT_TRUE(dragImage);
    146         SkAutoLockPixels lock1(*dragImage), lock2(*(testImage->nativeImageForCurrentFrame()));
    147         EXPECT_NE(dragImage->getPixels(), testImage->nativeImageForCurrentFrame()->getPixels());
    148     }
    149 }
    150 
    151 } // anonymous namespace
    152