third_party/WebKit/public/platform/WebImage.h

   1 /*
   2  * Copyright (C) 2009 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 #ifndef WebImage_h
  32 #define WebImage_h
  33
  34 #include "WebCommon.h"
  35 #include "WebVector.h"
  36
  37 #include "third_party/skia/include/core/SkBitmap.h"
  38
  39 #if INSIDE_BLINK
  40 namespace WTF { template <typename T> class PassRefPtr; }
  41 #endif
  42
  43 namespace blink {
  44
  45 class Image;
  46 class WebData;
  47 struct WebSize;
  48
  49 // A container for an ARGB bitmap.
  50 class WebImage {
  51 public:
  52     ~WebImage() { reset(); }
  53
  54     WebImage() { init(); }
  55     WebImage(const WebImage& image)
  56     {
  57         init();
  58         assign(image);
  59     }
  60
  61     WebImage& operator=(const WebImage& image)
  62     {
  63         assign(image);
  64         return *this;
  65     }
  66
  67     // Decodes the given image data. If the image has multiple frames,
  68     // then the frame whose size is desiredSize is returned. Otherwise,
  69     // the first frame is returned.
  70     BLINK_PLATFORM_EXPORT static WebImage fromData(const WebData&, const WebSize& desiredSize);
  71
  72     // Returns a list of all frames in the image. Only the first frame at each pixel
  73     // size will be returned.
  74     BLINK_PLATFORM_EXPORT static WebVector<WebImage> framesFromData(const WebData&);
  75
  76     BLINK_PLATFORM_EXPORT void reset();
  77     BLINK_PLATFORM_EXPORT void assign(const WebImage&);
  78
  79     BLINK_PLATFORM_EXPORT bool isNull() const;
  80     BLINK_PLATFORM_EXPORT WebSize size() const;
  81
  82 #if INSIDE_BLINK
  83     BLINK_PLATFORM_EXPORT WebImage(const WTF::PassRefPtr<Image>&);
  84     BLINK_PLATFORM_EXPORT WebImage& operator=(const WTF::PassRefPtr<Image>&);
  85 #endif
  86
  87     WebImage(const SkBitmap& bitmap) : m_bitmap(bitmap) { }
  88
  89     WebImage& operator=(const SkBitmap& bitmap)
  90     {
  91         m_bitmap = bitmap;
  92         return *this;
  93     }
  94
  95     SkBitmap& getSkBitmap() { return m_bitmap; }
  96     const SkBitmap& getSkBitmap() const { return m_bitmap; }
  97
  98 private:
  99     void init() { }
 100     SkBitmap m_bitmap;
 101 };
 102
 103 } // namespace blink
 104
 105 #endif