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 SVGPathByteStreamBuilder_h 21 #define SVGPathByteStreamBuilder_h 22 23 #if ENABLE(SVG) 24 #include "FloatPoint.h" 25 #include "PlatformString.h" 26 #include "SVGPathByteStream.h" 27 #include "SVGPathConsumer.h" 28 #include <wtf/PassOwnPtr.h> 29 30 namespace WebCore { 31 32 class SVGPathByteStreamBuilder : public SVGPathConsumer { 33 public: 34 SVGPathByteStreamBuilder(); 35 setCurrentByteStream(SVGPathByteStream * byteStream)36 void setCurrentByteStream(SVGPathByteStream* byteStream) { m_byteStream = byteStream; } 37 38 private: incrementPathSegmentCount()39 virtual void incrementPathSegmentCount() { } continueConsuming()40 virtual bool continueConsuming() { return true; } cleanup()41 virtual void cleanup() { m_byteStream = 0; } 42 43 // Used in UnalteredParsing/NormalizedParsing modes. 44 virtual void moveTo(const FloatPoint&, bool closed, PathCoordinateMode); 45 virtual void lineTo(const FloatPoint&, PathCoordinateMode); 46 virtual void curveToCubic(const FloatPoint&, const FloatPoint&, const FloatPoint&, PathCoordinateMode); 47 virtual void closePath(); 48 49 // Only used in UnalteredParsing mode. 50 virtual void lineToHorizontal(float, PathCoordinateMode); 51 virtual void lineToVertical(float, PathCoordinateMode); 52 virtual void curveToCubicSmooth(const FloatPoint&, const FloatPoint&, PathCoordinateMode); 53 virtual void curveToQuadratic(const FloatPoint&, const FloatPoint&, PathCoordinateMode); 54 virtual void curveToQuadraticSmooth(const FloatPoint&, PathCoordinateMode); 55 virtual void arcTo(float, float, float, bool largeArcFlag, bool sweepFlag, const FloatPoint&, PathCoordinateMode); 56 57 template<typename ByteType> writeType(const ByteType & type)58 void writeType(const ByteType& type) 59 { 60 size_t typeSize = sizeof(ByteType); 61 for (size_t i = 0; i < typeSize; ++i) 62 m_byteStream->append(type.bytes[i]); 63 } 64 writeFlag(bool value)65 void writeFlag(bool value) 66 { 67 BoolByte data; 68 data.value = value; 69 writeType(data); 70 } 71 writeFloat(float value)72 void writeFloat(float value) 73 { 74 FloatByte data; 75 data.value = value; 76 writeType(data); 77 } 78 writeFloatPoint(const FloatPoint & point)79 void writeFloatPoint(const FloatPoint& point) 80 { 81 writeFloat(point.x()); 82 writeFloat(point.y()); 83 } 84 writeSegmentType(unsigned short value)85 void writeSegmentType(unsigned short value) 86 { 87 UnsignedShortByte data; 88 data.value = value; 89 writeType(data); 90 } 91 92 SVGPathByteStream* m_byteStream; 93 }; 94 95 } // namespace WebCore 96 97 #endif // ENABLE(SVG) 98 #endif // SVGPathByteStreamBuilder_h 99