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      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 CanvasNumberArray_h
     27 #define CanvasNumberArray_h
     28 
     29 #include <wtf/PassRefPtr.h>
     30 #include <wtf/RefCounted.h>
     31 #include <wtf/Vector.h>
     32 #include <limits>
     33 
     34 namespace WebCore {
     35 
     36     class String;
     37 
     38     class CanvasNumberArray : public RefCounted<CanvasNumberArray> {
     39     public:
     40         static PassRefPtr<CanvasNumberArray> create(unsigned length);
     41 
     42         Vector<float>& data() { return m_data; }
     43         const Vector<float>& data() const { return m_data; }
     44 
     45         unsigned length() const { return m_data.size(); }
     46         float item(unsigned index) const { return (index >= m_data.size()) ? 0 : m_data[index]; }
     47 
     48     private:
     49         CanvasNumberArray(unsigned length);
     50         Vector<float> m_data;
     51     };
     52 
     53 } // namespace WebCore
     54 
     55 #endif // CanvasNumberArray_h
     56