1/*
2 * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@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#include "core/SVGNames.h"
25#include "core/svg/SVGAnimatedBoolean.h"
26#include "core/svg/SVGAnimatedNumber.h"
27#include "core/svg/SVGAnimatedPath.h"
28#include "core/svg/SVGGeometryElement.h"
29#include "core/svg/SVGPathByteStream.h"
30#include "wtf/WeakPtr.h"
31
32namespace blink {
33
34class SVGPathSegArcAbs;
35class SVGPathSegArcRel;
36class SVGPathSegClosePath;
37class SVGPathSegLinetoAbs;
38class SVGPathSegLinetoRel;
39class SVGPathSegMovetoAbs;
40class SVGPathSegMovetoRel;
41class SVGPathSegCurvetoCubicAbs;
42class SVGPathSegCurvetoCubicRel;
43class SVGPathSegLinetoVerticalAbs;
44class SVGPathSegLinetoVerticalRel;
45class SVGPathSegLinetoHorizontalAbs;
46class SVGPathSegLinetoHorizontalRel;
47class SVGPathSegCurvetoQuadraticAbs;
48class SVGPathSegCurvetoQuadraticRel;
49class SVGPathSegCurvetoCubicSmoothAbs;
50class SVGPathSegCurvetoCubicSmoothRel;
51class SVGPathSegCurvetoQuadraticSmoothAbs;
52class SVGPathSegCurvetoQuadraticSmoothRel;
53
54class SVGPathElement FINAL : public SVGGeometryElement {
55    DEFINE_WRAPPERTYPEINFO();
56public:
57    DECLARE_NODE_FACTORY(SVGPathElement);
58
59    float getTotalLength();
60    PassRefPtr<SVGPointTearOff> getPointAtLength(float distance);
61    unsigned getPathSegAtLength(float distance);
62
63    SVGAnimatedNumber* pathLength() { return m_pathLength.get(); }
64
65    PassRefPtr<SVGPathSegClosePath> createSVGPathSegClosePath();
66    PassRefPtr<SVGPathSegMovetoAbs> createSVGPathSegMovetoAbs(float x, float y);
67    PassRefPtr<SVGPathSegMovetoRel> createSVGPathSegMovetoRel(float x, float y);
68    PassRefPtr<SVGPathSegLinetoAbs> createSVGPathSegLinetoAbs(float x, float y);
69    PassRefPtr<SVGPathSegLinetoRel> createSVGPathSegLinetoRel(float x, float y);
70    PassRefPtr<SVGPathSegCurvetoCubicAbs> createSVGPathSegCurvetoCubicAbs(float x, float y, float x1, float y1, float x2, float y2);
71    PassRefPtr<SVGPathSegCurvetoCubicRel> createSVGPathSegCurvetoCubicRel(float x, float y, float x1, float y1, float x2, float y2);
72    PassRefPtr<SVGPathSegCurvetoQuadraticAbs> createSVGPathSegCurvetoQuadraticAbs(float x, float y, float x1, float y1);
73    PassRefPtr<SVGPathSegCurvetoQuadraticRel> createSVGPathSegCurvetoQuadraticRel(float x, float y, float x1, float y1);
74    PassRefPtr<SVGPathSegArcAbs> createSVGPathSegArcAbs(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag);
75    PassRefPtr<SVGPathSegArcRel> createSVGPathSegArcRel(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag);
76    PassRefPtr<SVGPathSegLinetoHorizontalAbs> createSVGPathSegLinetoHorizontalAbs(float x);
77    PassRefPtr<SVGPathSegLinetoHorizontalRel> createSVGPathSegLinetoHorizontalRel(float x);
78    PassRefPtr<SVGPathSegLinetoVerticalAbs> createSVGPathSegLinetoVerticalAbs(float y);
79    PassRefPtr<SVGPathSegLinetoVerticalRel> createSVGPathSegLinetoVerticalRel(float y);
80    PassRefPtr<SVGPathSegCurvetoCubicSmoothAbs> createSVGPathSegCurvetoCubicSmoothAbs(float x, float y, float x2, float y2);
81    PassRefPtr<SVGPathSegCurvetoCubicSmoothRel> createSVGPathSegCurvetoCubicSmoothRel(float x, float y, float x2, float y2);
82    PassRefPtr<SVGPathSegCurvetoQuadraticSmoothAbs> createSVGPathSegCurvetoQuadraticSmoothAbs(float x, float y);
83    PassRefPtr<SVGPathSegCurvetoQuadraticSmoothRel> createSVGPathSegCurvetoQuadraticSmoothRel(float x, float y);
84
85    // Used in the bindings only.
86    SVGPathSegListTearOff* pathSegList() { return m_pathSegList->baseVal(); }
87    SVGPathSegListTearOff* animatedPathSegList() { return m_pathSegList->animVal(); }
88
89    // FIXME: https://bugs.webkit.org/show_bug.cgi?id=15412 - Implement normalized path segment lists!
90    SVGPathSegListTearOff* normalizedPathSegList() { return 0; }
91    SVGPathSegListTearOff* animatedNormalizedPathSegList() { return 0; }
92
93    const SVGPathByteStream* pathByteStream() const { return m_pathSegList->currentValue()->byteStream(); }
94
95    void pathSegListChanged(ListModification = ListModificationUnknown);
96
97    virtual FloatRect getBBox() OVERRIDE;
98
99private:
100    explicit SVGPathElement(Document&);
101
102    bool isSupportedAttribute(const QualifiedName&);
103    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
104    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
105
106    virtual Node::InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
107    virtual void removedFrom(ContainerNode*) OVERRIDE;
108
109    void invalidateMPathDependencies();
110
111    RefPtr<SVGAnimatedNumber> m_pathLength;
112    RefPtr<SVGAnimatedPath> m_pathSegList;
113};
114
115} // namespace blink
116
117#endif // SVGPathElement_h
118