1 /*
2 * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27
28 #if ENABLE(SVG)
29 #include "SVGResourceMarker.h"
30
31 #include "AffineTransform.h"
32 #include "GraphicsContext.h"
33 #include "RenderSVGViewportContainer.h"
34 #include "TextStream.h"
35 #include <wtf/StdLibExtras.h>
36
37 namespace WebCore {
38
SVGResourceMarker()39 SVGResourceMarker::SVGResourceMarker()
40 : SVGResource()
41 , m_angle(-1) // just like using setAutoAngle()
42 , m_renderer(0)
43 , m_useStrokeWidth(true)
44 {
45 }
46
~SVGResourceMarker()47 SVGResourceMarker::~SVGResourceMarker()
48 {
49 }
50
markerTransformation(const FloatPoint & origin,float angle,float strokeWidth) const51 AffineTransform SVGResourceMarker::markerTransformation(const FloatPoint& origin, float angle, float strokeWidth) const
52 {
53 ASSERT(m_renderer);
54
55 AffineTransform transform;
56 transform.translate(origin.x(), origin.y());
57 transform.rotate(m_angle == -1 ? angle : m_angle);
58 transform = m_renderer->markerContentTransformation(transform, m_referencePoint, m_useStrokeWidth ? strokeWidth : -1);
59 return transform;
60 }
61
draw(RenderObject::PaintInfo & paintInfo,const AffineTransform & transform)62 void SVGResourceMarker::draw(RenderObject::PaintInfo& paintInfo, const AffineTransform& transform)
63 {
64 if (!m_renderer)
65 return;
66
67 DEFINE_STATIC_LOCAL(HashSet<SVGResourceMarker*>, currentlyDrawingMarkers, ());
68
69 // avoid drawing circular marker references
70 if (currentlyDrawingMarkers.contains(this))
71 return;
72
73 currentlyDrawingMarkers.add(this);
74 ASSERT(!m_renderer->drawsContents());
75 RenderObject::PaintInfo info(paintInfo);
76 info.context->save();
77 applyTransformToPaintInfo(info, transform);
78 m_renderer->setDrawsContents(true);
79 m_renderer->paint(info, 0, 0);
80 m_renderer->setDrawsContents(false);
81 info.context->restore();
82
83 currentlyDrawingMarkers.remove(this);
84 }
85
externalRepresentation(TextStream & ts) const86 TextStream& SVGResourceMarker::externalRepresentation(TextStream& ts) const
87 {
88 ts << "[type=MARKER]"
89 << " [angle=";
90
91 if (angle() == -1)
92 ts << "auto" << "]";
93 else
94 ts << angle() << "]";
95
96 ts << " [ref x=" << m_referencePoint.x() << " y=" << m_referencePoint.y() << "]";
97 return ts;
98 }
99
getMarkerById(Document * document,const AtomicString & id,const RenderObject * object)100 SVGResourceMarker* getMarkerById(Document* document, const AtomicString& id, const RenderObject* object)
101 {
102 SVGResource* resource = getResourceById(document, id, object);
103 if (resource && resource->isMarker())
104 return static_cast<SVGResourceMarker*>(resource);
105
106 return 0;
107 }
108
109 } // namespace WebCore
110
111 #endif
112