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