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      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 "platform/DragImage.h"
     34 
     35 #include "platform/fonts/FontDescription.h"
     36 #include "platform/fonts/FontTraits.h"
     37 #include "platform/geometry/IntSize.h"
     38 #include "platform/graphics/Image.h"
     39 #include "platform/graphics/skia/NativeImageSkia.h"
     40 #include "platform/weborigin/KURL.h"
     41 #include "third_party/skia/include/core/SkBitmap.h"
     42 #include "wtf/OwnPtr.h"
     43 #include "wtf/PassOwnPtr.h"
     44 #include "wtf/PassRefPtr.h"
     45 #include "wtf/RefPtr.h"
     46 
     47 #include <gtest/gtest.h>
     48 
     49 using namespace blink;
     50 
     51 namespace {
     52 
     53 class TestImage : public Image {
     54 public:
     55 
     56     static PassRefPtr<TestImage> create(const IntSize& size)
     57     {
     58         return adoptRef(new TestImage(size));
     59     }
     60 
     61     explicit TestImage(const IntSize& size)
     62         : Image(0)
     63         , m_size(size)
     64     {
     65         SkBitmap bitmap;
     66         bitmap.allocN32Pixels(size.width(), size.height());
     67         m_nativeImage = NativeImageSkia::create(bitmap);
     68     }
     69 
     70     virtual IntSize size() const OVERRIDE
     71     {
     72         return m_size;
     73     }
     74 
     75     virtual PassRefPtr<NativeImageSkia> nativeImageForCurrentFrame() OVERRIDE
     76     {
     77         if (m_size.isZero())
     78             return nullptr;
     79 
     80         return m_nativeImage;
     81     }
     82 
     83     // Stub implementations of pure virtual Image functions.
     84     virtual void destroyDecodedData(bool) OVERRIDE
     85     {
     86     }
     87 
     88     virtual bool currentFrameKnownToBeOpaque() OVERRIDE
     89     {
     90         return false;
     91     }
     92 
     93     virtual void draw(GraphicsContext*, const FloatRect&, const FloatRect&, CompositeOperator, blink::WebBlendMode) OVERRIDE
     94     {
     95     }
     96 
     97 private:
     98 
     99     IntSize m_size;
    100 
    101     RefPtr<NativeImageSkia> m_nativeImage;
    102 };
    103 
    104 TEST(DragImageTest, NullHandling)
    105 {
    106     EXPECT_FALSE(DragImage::create(0));
    107 
    108     RefPtr<TestImage> nullTestImage(TestImage::create(IntSize()));
    109     EXPECT_FALSE(DragImage::create(nullTestImage.get()));
    110 }
    111 
    112 TEST(DragImageTest, NonNullHandling)
    113 {
    114     RefPtr<TestImage> testImage(TestImage::create(IntSize(2, 2)));
    115     OwnPtr<DragImage> dragImage = DragImage::create(testImage.get());
    116     ASSERT_TRUE(dragImage);
    117 
    118     dragImage->scale(0.5, 0.5);
    119     IntSize size = dragImage->size();
    120     EXPECT_EQ(1, size.width());
    121     EXPECT_EQ(1, size.height());
    122 
    123     dragImage->dissolveToFraction(0.5);
    124 }
    125 
    126 TEST(DragImageTest, CreateDragImage)
    127 {
    128     {
    129         // Tests that the DrageImage implementation doesn't choke on null values
    130         // of nativeImageForCurrentFrame().
    131         RefPtr<TestImage> testImage(TestImage::create(IntSize()));
    132         EXPECT_FALSE(DragImage::create(testImage.get()));
    133     }
    134 
    135     {
    136         // Tests that the drag image is a deep copy.
    137         RefPtr<TestImage> testImage(TestImage::create(IntSize(1, 1)));
    138         OwnPtr<DragImage> dragImage = DragImage::create(testImage.get());
    139         ASSERT_TRUE(dragImage);
    140         SkAutoLockPixels lock1(dragImage->bitmap()), lock2(testImage->nativeImageForCurrentFrame()->bitmap());
    141         EXPECT_NE(dragImage->bitmap().getPixels(), testImage->nativeImageForCurrentFrame()->bitmap().getPixels());
    142     }
    143 }
    144 
    145 TEST(DragImageTest, TrimWhitespace)
    146 {
    147     KURL url(ParsedURLString, "http://www.example.com/");
    148     String testLabel = "          Example Example Example      \n    ";
    149     String expectedLabel = "Example Example Example";
    150     float deviceScaleFactor = 1.0f;
    151 
    152     FontDescription fontDescription;
    153     fontDescription.firstFamily().setFamily("Arial");
    154     fontDescription.setSpecifiedSize(16);
    155     fontDescription.setIsAbsoluteSize(true);
    156     fontDescription.setGenericFamily(FontDescription::NoFamily);
    157     fontDescription.setWeight(FontWeightNormal);
    158     fontDescription.setStyle(FontStyleNormal);
    159 
    160     OwnPtr<DragImage> testImage =
    161         DragImage::create(url, testLabel, fontDescription, deviceScaleFactor);
    162     OwnPtr<DragImage> expectedImage =
    163         DragImage::create(url, expectedLabel, fontDescription, deviceScaleFactor);
    164 
    165     EXPECT_EQ(testImage->size().width(), expectedImage->size().width());
    166 }
    167 
    168 } // anonymous namespace
    169