1/*
2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
4 * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
5 * Copyright (C) 2006 Apple Computer, Inc
6 * Copyright (C) 2009 Google, Inc.
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 RenderSVGPath_h
25#define RenderSVGPath_h
26
27#if ENABLE(SVG)
28#include "AffineTransform.h"
29#include "FloatRect.h"
30#include "RenderSVGModelObject.h"
31#include "SVGMarkerLayoutInfo.h"
32
33namespace WebCore {
34
35class FloatPoint;
36class RenderSVGContainer;
37class SVGStyledTransformableElement;
38
39class RenderSVGPath : public RenderSVGModelObject {
40public:
41    explicit RenderSVGPath(SVGStyledTransformableElement*);
42    virtual ~RenderSVGPath();
43
44    const Path& path() const { return m_path; }
45    void setNeedsPathUpdate() { m_needsPathUpdate = true; }
46    virtual void setNeedsBoundariesUpdate() { m_needsBoundariesUpdate = true; }
47    virtual void setNeedsTransformUpdate() { m_needsTransformUpdate = true; }
48
49private:
50    // Hit-detection seperated for the fill and the stroke
51    bool fillContains(const FloatPoint&, bool requiresFill = true, WindRule fillRule = RULE_NONZERO);
52    bool strokeContains(const FloatPoint&, bool requiresStroke = true);
53
54    virtual FloatRect objectBoundingBox() const { return m_fillBoundingBox; }
55    virtual FloatRect strokeBoundingBox() const { return m_strokeAndMarkerBoundingBox; }
56    virtual FloatRect repaintRectInLocalCoordinates() const { return m_repaintBoundingBox; }
57    virtual const AffineTransform& localToParentTransform() const { return m_localTransform; }
58
59    virtual bool isSVGPath() const { return true; }
60    virtual const char* renderName() const { return "RenderSVGPath"; }
61
62    virtual void layout();
63    virtual void paint(PaintInfo&, int parentX, int parentY);
64    virtual void addFocusRingRects(Vector<IntRect>&, int tx, int ty);
65
66    virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction);
67
68    FloatRect calculateMarkerBoundsIfNeeded();
69    void updateCachedBoundaries();
70
71private:
72    virtual AffineTransform localTransform() const { return m_localTransform; }
73    void fillAndStrokePath(GraphicsContext*);
74
75    bool m_needsBoundariesUpdate : 1;
76    bool m_needsPathUpdate : 1;
77    bool m_needsTransformUpdate : 1;
78
79    mutable Path m_path;
80    FloatRect m_fillBoundingBox;
81    FloatRect m_strokeAndMarkerBoundingBox;
82    FloatRect m_repaintBoundingBox;
83    SVGMarkerLayoutInfo m_markerLayoutInfo;
84    AffineTransform m_localTransform;
85};
86
87inline RenderSVGPath* toRenderSVGPath(RenderObject* object)
88{
89    ASSERT(!object || object->isSVGPath());
90    return static_cast<RenderSVGPath*>(object);
91}
92
93inline const RenderSVGPath* toRenderSVGPath(const RenderObject* object)
94{
95    ASSERT(!object || object->isSVGPath());
96    return static_cast<const RenderSVGPath*>(object);
97}
98
99// This will catch anyone doing an unnecessary cast.
100void toRenderSVGPath(const RenderSVGPath*);
101
102}
103
104#endif // ENABLE(SVG)
105#endif
106