1 /*

     2  * Copyright (C) 2008, 2009 Apple 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

     6  * are met:

     7  *

     8  * 1.  Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer.

    10  * 2.  Redistributions in binary form must reproduce the above copyright

    11  *     notice, this list of conditions and the following disclaimer in the

    12  *     documentation and/or other materials provided with the distribution.

    13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

    14  *     its contributors may be used to endorse or promote products derived

    15  *     from this software without specific prior written permission.

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

    18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

    19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

    20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

    21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

    23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

    24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

    26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    27  */

    28 

    29 #ifndef CanvasPixelArray_h

    30 #define CanvasPixelArray_h

    31 

    32 #include <wtf/ByteArray.h>

    33 #include <wtf/MathExtras.h>

    34 #include <wtf/PassRefPtr.h>

    35 #include <wtf/RefCounted.h>

    36 #include <wtf/Vector.h>

    37 

    38 namespace WebCore {

    39     

    40     class CanvasPixelArray : public RefCounted<CanvasPixelArray> {

    41     public:

    42         static PassRefPtr<CanvasPixelArray> create(unsigned length);

    43         

    44         WTF::ByteArray* data() { return m_data.get(); }

    45         const WTF::ByteArray* data() const { return m_data.get(); }

    46         unsigned length() const { return m_data->length(); }

    47         

    48         void set(unsigned index, double value)

    49         {

    50             m_data->set(index, value);

    51         }

    52 

    53         void set(unsigned index, unsigned char value)

    54         {

    55             m_data->set(index, value);

    56         }

    57         

    58         bool get(unsigned index, unsigned char& result) const

    59         {

    60             return m_data->get(index, result);

    61         }

    62 

    63         unsigned char get(unsigned index) const

    64         {

    65             return m_data->get(index);

    66         }

    67 

    68     private:

    69         CanvasPixelArray(unsigned length);

    70         RefPtr<WTF::ByteArray> m_data;

    71     };

    72     

    73 } // namespace WebCore

    74 

    75 #endif // CanvasPixelArray_h