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