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      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis (at) kde.org>
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef SVGPathElement_h
     22 #define SVGPathElement_h
     23 
     24 #if ENABLE(SVG)
     25 #include "SVGAnimatedBoolean.h"
     26 #include "SVGAnimatedNumber.h"
     27 #include "SVGAnimatedPathSegListPropertyTearOff.h"
     28 #include "SVGExternalResourcesRequired.h"
     29 #include "SVGLangSpace.h"
     30 #include "SVGPathByteStream.h"
     31 #include "SVGStyledTransformableElement.h"
     32 #include "SVGTests.h"
     33 
     34 namespace WebCore {
     35 
     36 class SVGPathSegArcAbs;
     37 class SVGPathSegArcRel;
     38 class SVGPathSegClosePath;
     39 class SVGPathSegLinetoAbs;
     40 class SVGPathSegLinetoRel;
     41 class SVGPathSegMovetoAbs;
     42 class SVGPathSegMovetoRel;
     43 class SVGPathSegCurvetoCubicAbs;
     44 class SVGPathSegCurvetoCubicRel;
     45 class SVGPathSegLinetoVerticalAbs;
     46 class SVGPathSegLinetoVerticalRel;
     47 class SVGPathSegLinetoHorizontalAbs;
     48 class SVGPathSegLinetoHorizontalRel;
     49 class SVGPathSegCurvetoQuadraticAbs;
     50 class SVGPathSegCurvetoQuadraticRel;
     51 class SVGPathSegCurvetoCubicSmoothAbs;
     52 class SVGPathSegCurvetoCubicSmoothRel;
     53 class SVGPathSegCurvetoQuadraticSmoothAbs;
     54 class SVGPathSegCurvetoQuadraticSmoothRel;
     55 
     56 class SVGPathElement : public SVGStyledTransformableElement,
     57                        public SVGTests,
     58                        public SVGLangSpace,
     59                        public SVGExternalResourcesRequired {
     60 public:
     61     static PassRefPtr<SVGPathElement> create(const QualifiedName&, Document*);
     62 
     63     float getTotalLength();
     64     FloatPoint getPointAtLength(float distance);
     65     unsigned long getPathSegAtLength(float distance);
     66 
     67     PassRefPtr<SVGPathSegClosePath> createSVGPathSegClosePath(SVGPathSegRole role = PathSegUndefinedRole);
     68     PassRefPtr<SVGPathSegMovetoAbs> createSVGPathSegMovetoAbs(float x, float y, SVGPathSegRole role = PathSegUndefinedRole);
     69     PassRefPtr<SVGPathSegMovetoRel> createSVGPathSegMovetoRel(float x, float y, SVGPathSegRole role = PathSegUndefinedRole);
     70     PassRefPtr<SVGPathSegLinetoAbs> createSVGPathSegLinetoAbs(float x, float y, SVGPathSegRole role = PathSegUndefinedRole);
     71     PassRefPtr<SVGPathSegLinetoRel> createSVGPathSegLinetoRel(float x, float y, SVGPathSegRole role = PathSegUndefinedRole);
     72     PassRefPtr<SVGPathSegCurvetoCubicAbs> createSVGPathSegCurvetoCubicAbs(float x, float y, float x1, float y1, float x2, float y2, SVGPathSegRole role = PathSegUndefinedRole);
     73     PassRefPtr<SVGPathSegCurvetoCubicRel> createSVGPathSegCurvetoCubicRel(float x, float y, float x1, float y1, float x2, float y2, SVGPathSegRole role = PathSegUndefinedRole);
     74     PassRefPtr<SVGPathSegCurvetoQuadraticAbs> createSVGPathSegCurvetoQuadraticAbs(float x, float y, float x1, float y1, SVGPathSegRole role = PathSegUndefinedRole);
     75     PassRefPtr<SVGPathSegCurvetoQuadraticRel> createSVGPathSegCurvetoQuadraticRel(float x, float y, float x1, float y1, SVGPathSegRole role = PathSegUndefinedRole);
     76     PassRefPtr<SVGPathSegArcAbs> createSVGPathSegArcAbs(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag, SVGPathSegRole role = PathSegUndefinedRole);
     77     PassRefPtr<SVGPathSegArcRel> createSVGPathSegArcRel(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag, SVGPathSegRole role = PathSegUndefinedRole);
     78     PassRefPtr<SVGPathSegLinetoHorizontalAbs> createSVGPathSegLinetoHorizontalAbs(float x, SVGPathSegRole role = PathSegUndefinedRole);
     79     PassRefPtr<SVGPathSegLinetoHorizontalRel> createSVGPathSegLinetoHorizontalRel(float x, SVGPathSegRole role = PathSegUndefinedRole);
     80     PassRefPtr<SVGPathSegLinetoVerticalAbs> createSVGPathSegLinetoVerticalAbs(float y, SVGPathSegRole role = PathSegUndefinedRole);
     81     PassRefPtr<SVGPathSegLinetoVerticalRel> createSVGPathSegLinetoVerticalRel(float y, SVGPathSegRole role = PathSegUndefinedRole);
     82     PassRefPtr<SVGPathSegCurvetoCubicSmoothAbs> createSVGPathSegCurvetoCubicSmoothAbs(float x, float y, float x2, float y2, SVGPathSegRole role = PathSegUndefinedRole);
     83     PassRefPtr<SVGPathSegCurvetoCubicSmoothRel> createSVGPathSegCurvetoCubicSmoothRel(float x, float y, float x2, float y2, SVGPathSegRole role = PathSegUndefinedRole);
     84     PassRefPtr<SVGPathSegCurvetoQuadraticSmoothAbs> createSVGPathSegCurvetoQuadraticSmoothAbs(float x, float y, SVGPathSegRole role = PathSegUndefinedRole);
     85     PassRefPtr<SVGPathSegCurvetoQuadraticSmoothRel> createSVGPathSegCurvetoQuadraticSmoothRel(float x, float y, SVGPathSegRole role = PathSegUndefinedRole);
     86 
     87     // Used in the bindings only.
     88     SVGPathSegListPropertyTearOff* pathSegList();
     89     SVGPathSegListPropertyTearOff* animatedPathSegList();
     90     SVGPathSegListPropertyTearOff* normalizedPathSegList();
     91     SVGPathSegListPropertyTearOff* animatedNormalizedPathSegList();
     92 
     93     SVGPathByteStream* pathByteStream() const { return m_pathByteStream.get(); }
     94     SVGAnimatedProperty* animatablePathSegList() const { return m_animatablePathSegList.get(); }
     95 
     96     virtual void toPathData(Path&) const;
     97     void pathSegListChanged(SVGPathSegRole);
     98 
     99 private:
    100     SVGPathElement(const QualifiedName&, Document*);
    101 
    102     virtual bool isValid() const { return SVGTests::isValid(); }
    103 
    104     virtual void parseMappedAttribute(Attribute*);
    105     virtual void synchronizeProperty(const QualifiedName&);
    106     virtual void svgAttributeChanged(const QualifiedName&);
    107     virtual void fillAttributeToPropertyTypeMap();
    108     virtual AttributeToPropertyTypeMap& attributeToPropertyTypeMap();
    109     virtual bool supportsMarkers() const { return true; }
    110 
    111     // Animated property declarations
    112     DECLARE_ANIMATED_NUMBER(PathLength, pathLength)
    113 
    114     // SVGExternalResourcesRequired
    115     DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
    116 
    117     void synchronizeD();
    118 
    119 protected:
    120     OwnPtr<SVGPathByteStream> m_pathByteStream;
    121     mutable SVGSynchronizableAnimatedProperty<SVGPathSegList> m_pathSegList;
    122     RefPtr<SVGAnimatedPathSegListPropertyTearOff> m_animatablePathSegList;
    123 };
    124 
    125 } // namespace WebCore
    126 
    127 #endif // ENABLE(SVG)
    128 #endif
    129