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 <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