1/* 2 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20#ifndef SVGPathByteStreamSource_h 21#define SVGPathByteStreamSource_h 22 23#include "core/svg/SVGPathByteStream.h" 24#include "core/svg/SVGPathSource.h" 25#include "platform/geometry/FloatPoint.h" 26#include "wtf/PassOwnPtr.h" 27 28namespace WebCore { 29 30class SVGPathByteStreamSource : public SVGPathSource { 31public: 32 static PassOwnPtr<SVGPathByteStreamSource> create(SVGPathByteStream* stream) 33 { 34 return adoptPtr(new SVGPathByteStreamSource(stream)); 35 } 36 37private: 38 SVGPathByteStreamSource(SVGPathByteStream*); 39 40 virtual bool hasMoreData() const; 41 virtual bool moveToNextToken() { return true; } 42 virtual bool parseSVGSegmentType(SVGPathSegType&); 43 virtual SVGPathSegType nextCommand(SVGPathSegType); 44 45 virtual bool parseMoveToSegment(FloatPoint&); 46 virtual bool parseLineToSegment(FloatPoint&); 47 virtual bool parseLineToHorizontalSegment(float&); 48 virtual bool parseLineToVerticalSegment(float&); 49 virtual bool parseCurveToCubicSegment(FloatPoint&, FloatPoint&, FloatPoint&); 50 virtual bool parseCurveToCubicSmoothSegment(FloatPoint&, FloatPoint&); 51 virtual bool parseCurveToQuadraticSegment(FloatPoint&, FloatPoint&); 52 virtual bool parseCurveToQuadraticSmoothSegment(FloatPoint&); 53 virtual bool parseArcToSegment(float&, float&, float&, bool&, bool&, FloatPoint&); 54 55#if COMPILER(MSVC) 56#pragma warning(disable: 4701) 57#endif 58 template<typename DataType, typename ByteType> 59 DataType readType() 60 { 61 ByteType data; 62 size_t typeSize = sizeof(ByteType); 63 64 for (size_t i = 0; i < typeSize; ++i) { 65 ASSERT(m_streamCurrent < m_streamEnd); 66 data.bytes[i] = *m_streamCurrent; 67 ++m_streamCurrent; 68 } 69 70 return data.value; 71 } 72 73 bool readFlag() 74 { 75 return readType<bool, BoolByte>(); 76 } 77 78 float readFloat() 79 { 80 return readType<float, FloatByte>(); 81 } 82 83 unsigned short readSVGSegmentType() 84 { 85 return readType<unsigned short, UnsignedShortByte>(); 86 } 87 88 FloatPoint readFloatPoint() 89 { 90 float x = readType<float, FloatByte>(); 91 float y = readType<float, FloatByte>(); 92 return FloatPoint(x, y); 93 } 94 95 SVGPathByteStream::DataIterator m_streamCurrent; 96 SVGPathByteStream::DataIterator m_streamEnd; 97}; 98 99} // namespace WebCore 100 101#endif // SVGPathByteStreamSource_h 102