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 static PassRefPtr<CanvasPixelArray> create(PassRefPtr<ByteArray>); 44 45 ByteArray* data() { return m_data.get(); } 46 const ByteArray* data() const { return m_data.get(); } 47 unsigned length() const { return m_data->length(); } 48 49 void set(unsigned index, double value) 50 { 51 m_data->set(index, value); 52 } 53 54 void set(unsigned index, unsigned char value) 55 { 56 m_data->set(index, value); 57 } 58 59 bool get(unsigned index, unsigned char& result) const 60 { 61 return m_data->get(index, result); 62 } 63 64 unsigned char get(unsigned index) const 65 { 66 return m_data->get(index); 67 } 68 69 private: 70 CanvasPixelArray(unsigned length); 71 CanvasPixelArray(PassRefPtr<ByteArray>); 72 73 RefPtr<ByteArray> m_data; 74 }; 75 76 } // namespace WebCore 77 78 #endif // CanvasPixelArray_h 79
