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 Inc.
6 * Copyright (C) 2009 Google, Inc.
7 * Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
8 * Copyright (C) 2011 University of Szeged
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
19 *
20 * You should have received a copy of the GNU Library General Public License
21 * along with this library; see the file COPYING.LIB. If not, write to
22 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 * Boston, MA 02110-1301, USA.
24 */
25
26#pragma once
27
28#include "AffineTransform.h"
29#include "FloatRect.h"
30#include "RenderSVGModelObject.h"
31#include "SVGGraphicsElement.h"
32#include "SVGMarkerData.h"
33#include <memory>
34#include <wtf/Vector.h>
35
36namespace WebCore {
37
38class FloatPoint;
39class GraphicsContextStateSaver;
40class RenderSVGContainer;
41class RenderSVGPath;
42class RenderSVGResource;
43class SVGGraphicsElement;
44
45class RenderSVGShape : public RenderSVGModelObject {
46 WTF_MAKE_ISO_ALLOCATED(RenderSVGShape);
47public:
48 enum PointCoordinateSpace {
49 GlobalCoordinateSpace,
50 LocalCoordinateSpace
51 };
52 RenderSVGShape(SVGGraphicsElement&, RenderStyle&&);
53 virtual ~RenderSVGShape();
54
55 SVGGraphicsElement& graphicsElement() const { return downcast<SVGGraphicsElement>(RenderSVGModelObject::element()); }
56
57 void setNeedsShapeUpdate() { m_needsShapeUpdate = true; }
58 void setNeedsBoundariesUpdate() final { m_needsBoundariesUpdate = true; }
59 bool needsBoundariesUpdate() final { return m_needsBoundariesUpdate; }
60 void setNeedsTransformUpdate() final { m_needsTransformUpdate = true; }
61 virtual void fillShape(GraphicsContext&) const;
62 virtual void strokeShape(GraphicsContext&) const;
63 virtual bool isRenderingDisabled() const = 0;
64
65 bool isPointInFill(const FloatPoint&);
66 bool isPointInStroke(const FloatPoint&);
67
68 float getTotalLength() const;
69 void getPointAtLength(FloatPoint&, float distance) const;
70
71 bool hasPath() const { return m_path.get(); }
72 Path& path() const
73 {
74 ASSERT(m_path);
75 return *m_path;
76 }
77 void clearPath() { m_path = nullptr; }
78
79protected:
80 void element() const = delete;
81
82 virtual void updateShapeFromElement();
83 virtual bool isEmpty() const;
84 virtual bool shapeDependentStrokeContains(const FloatPoint&, PointCoordinateSpace = GlobalCoordinateSpace);
85 virtual bool shapeDependentFillContains(const FloatPoint&, const WindRule) const;
86 float strokeWidth() const;
87 bool hasSmoothStroke() const;
88
89 bool hasNonScalingStroke() const { return style().svgStyle().vectorEffect() == VectorEffect::NonScalingStroke; }
90 AffineTransform nonScalingStrokeTransform() const;
91 Path* nonScalingStrokePath(const Path*, const AffineTransform&) const;
92
93 FloatRect m_fillBoundingBox;
94 FloatRect m_strokeBoundingBox;
95
96private:
97 // Hit-detection separated for the fill and the stroke
98 bool fillContains(const FloatPoint&, bool requiresFill = true, const WindRule fillRule = WindRule::NonZero);
99 bool strokeContains(const FloatPoint&, bool requiresStroke = true);
100
101 FloatRect repaintRectInLocalCoordinates() const final { return m_repaintBoundingBox; }
102 const AffineTransform& localToParentTransform() const final { return m_localTransform; }
103 AffineTransform localTransform() const final { return m_localTransform; }
104
105 bool isSVGShape() const final { return true; }
106 bool canHaveChildren() const final { return false; }
107 const char* renderName() const override { return "RenderSVGShape"; }
108
109 void layout() final;
110 void paint(PaintInfo&, const LayoutPoint&) final;
111 void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = 0) final;
112
113 bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction) final;
114
115 FloatRect objectBoundingBox() const final { return m_fillBoundingBox; }
116 FloatRect strokeBoundingBox() const final { return m_strokeBoundingBox; }
117 FloatRect calculateObjectBoundingBox() const;
118 FloatRect calculateStrokeBoundingBox() const;
119 void updateRepaintBoundingBox();
120
121 bool setupNonScalingStrokeContext(AffineTransform&, GraphicsContextStateSaver&);
122
123 bool shouldGenerateMarkerPositions() const;
124 FloatRect markerRect(float strokeWidth) const;
125 void processMarkerPositions();
126
127 void fillShape(const RenderStyle&, GraphicsContext&);
128 void strokeShape(const RenderStyle&, GraphicsContext&);
129 void strokeShape(GraphicsContext&);
130 void fillStrokeMarkers(PaintInfo&);
131 void drawMarkers(PaintInfo&);
132
133private:
134 FloatRect m_repaintBoundingBox;
135 FloatRect m_repaintBoundingBoxExcludingShadow;
136
137 bool m_needsBoundariesUpdate : 1;
138 bool m_needsShapeUpdate : 1;
139 bool m_needsTransformUpdate : 1;
140
141 AffineTransform m_localTransform;
142 std::unique_ptr<Path> m_path;
143 Vector<MarkerPosition> m_markerPositions;
144};
145
146} // namespace WebCore
147
148SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderSVGShape, isSVGShape())
149