Home | History | Annotate | Download | only in public 
      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 
     36 #if WEBKIT_USING_SKIA
     37 #include <SkBitmap.h>
     38 #elif WEBKIT_USING_CG
     39 typedef struct CGImage* CGImageRef;
     40 #endif
     41 
     42 #if WEBKIT_IMPLEMENTATION
     43 namespace WebCore { class Image; }
     44 namespace WTF { template <typename T> class PassRefPtr; }
     45 #endif
     46 
     47 namespace WebKit {
     48 
     49 class WebData;
     50 struct WebSize;
     51 
     52 // A container for an ARGB bitmap.
     53 class WebImage {
     54 public:
     55     ~WebImage() { reset(); }
     56 
     57     WebImage() { init(); }
     58     WebImage(const WebImage& image)
     59     {
     60         init();
     61         assign(image);
     62     }
     63 
     64     WebImage& operator=(const WebImage& image)
     65     {
     66         assign(image);
     67         return *this;
     68     }
     69 
     70     // Decodes the given image data.  If the image has multiple frames,
     71     // then the frame whose size is desiredSize is returned.  Otherwise,
     72     // the first frame is returned.
     73     WEBKIT_API static WebImage fromData(const WebData&, const WebSize& desiredSize);
     74 
     75     WEBKIT_API void reset();
     76     WEBKIT_API void assign(const WebImage&);
     77 
     78     WEBKIT_API bool isNull() const;
     79     WEBKIT_API WebSize size() const;
     80 
     81 #if WEBKIT_IMPLEMENTATION
     82     WebImage(const WTF::PassRefPtr<WebCore::Image>&);
     83     WebImage& operator=(const WTF::PassRefPtr<WebCore::Image>&);
     84 #endif
     85 
     86 #if WEBKIT_USING_SKIA
     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 #elif WEBKIT_USING_CG
    103     WebImage(CGImageRef imageRef)
    104     {
    105         init();
    106         assign(imageRef);
    107     }
    108 
    109     WebImage& operator=(CGImageRef imageRef)
    110     {
    111         assign(imageRef);
    112         return *this;
    113     }
    114 
    115     CGImageRef getCGImageRef() const { return m_imageRef; }
    116 
    117 private:
    118     void init() { m_imageRef = 0; }
    119     void assign(CGImageRef);
    120     CGImageRef m_imageRef;
    121 #endif
    122 };
    123 
    124 } // namespace WebKit
    125 
    126 #endif
    127