1 /*

     2  * Copyright (C) 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  * 1. Redistributions of source code must retain the above copyright

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

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

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

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

    12  *

    13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

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

    15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

    17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

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

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

    24  */

    25 

    26 #ifndef CanvasRenderingContext_h

    27 #define CanvasRenderingContext_h

    28 

    29 #include <wtf/Noncopyable.h>

    30 

    31 namespace WebCore {

    32 

    33     class CanvasObject;

    34     class HTMLCanvasElement;

    35 

    36     class CanvasRenderingContext : public Noncopyable {

    37     public:

    38         CanvasRenderingContext(HTMLCanvasElement*);

    39         virtual ~CanvasRenderingContext() { }

    40         

    41         // Ref and deref the m_canvas

    42         void ref();

    43         void deref();

    44         

    45         HTMLCanvasElement* canvas() const { return m_canvas; }

    46         

    47         virtual bool is2d() const { return false; }

    48         virtual bool is3d() const { return false; }

    49 

    50     private:

    51         HTMLCanvasElement* m_canvas;

    52     };

    53 

    54 } // namespace WebCore

    55 

    56 #endif