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      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 WEBKIT_IMPLEMENTATION
     40 namespace WebCore { class Image; }
     41 namespace WTF { template <typename T> class PassRefPtr; }
     42 #endif
     43 
     44 namespace WebKit {
     45 
     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     WEBKIT_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     WEBKIT_EXPORT static WebVector<WebImage> framesFromData(const WebData&);
     75 
     76     WEBKIT_EXPORT void reset();
     77     WEBKIT_EXPORT void assign(const WebImage&);
     78 
     79     WEBKIT_EXPORT bool isNull() const;
     80     WEBKIT_EXPORT WebSize size() const;
     81 
     82 #if WEBKIT_IMPLEMENTATION
     83     WebImage(const WTF::PassRefPtr<WebCore::Image>&);
     84     WebImage& operator=(const WTF::PassRefPtr<WebCore::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 
    104 } // namespace WebKit
    105 
    106 #endif
    107