Home | History | Annotate | Download | only in svg 
      1 /*
      2  * Copyright (C) 2002, 2003 The Karbon Developers
      3  * Copyright (C) 2006 Alexander Kellett <lypanov (at) kde.org>
      4  * Copyright (C) 2006, 2007 Rob Buis <buis (at) kde.org>
      5  * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
      6  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  */
     23 
     24 #ifndef SVGPathParser_h
     25 #define SVGPathParser_h
     26 
     27 #include "core/svg/SVGPathConsumer.h"
     28 #include "core/svg/SVGPathSeg.h"
     29 #include "wtf/PassOwnPtr.h"
     30 #include "wtf/text/WTFString.h"
     31 
     32 namespace WebCore {
     33 
     34 class SVGPathSource;
     35 
     36 class SVGPathParser {
     37     WTF_MAKE_NONCOPYABLE(SVGPathParser); WTF_MAKE_FAST_ALLOCATED;
     38 public:
     39     SVGPathParser();
     40 
     41     bool parsePathDataFromSource(PathParsingMode, bool checkForInitialMoveTo = true);
     42     void setCurrentConsumer(SVGPathConsumer* consumer) { m_consumer = consumer; }
     43     void setCurrentSource(SVGPathSource* source) { m_source = source; }
     44     void cleanup();
     45 
     46 private:
     47     bool decomposeArcToCubic(float, float, float, FloatPoint&, FloatPoint&, bool largeArcFlag, bool sweepFlag);
     48     void parseClosePathSegment();
     49     bool parseMoveToSegment();
     50     bool parseLineToSegment();
     51     bool parseLineToHorizontalSegment();
     52     bool parseLineToVerticalSegment();
     53     bool parseCurveToCubicSegment();
     54     bool parseCurveToCubicSmoothSegment();
     55     bool parseCurveToQuadraticSegment();
     56     bool parseCurveToQuadraticSmoothSegment();
     57     bool parseArcToSegment();
     58 
     59     SVGPathSource* m_source;
     60     SVGPathConsumer* m_consumer;
     61     PathCoordinateMode m_mode;
     62     PathParsingMode m_pathParsingMode;
     63     SVGPathSegType m_lastCommand;
     64     bool m_closePath;
     65     FloatPoint m_controlPoint;
     66     FloatPoint m_currentPoint;
     67     FloatPoint m_subPathPoint;
     68 };
     69 
     70 } // namespace WebCore
     71 
     72 #endif // SVGPathParser_h
     73