File indexing completed on 2024-05-12 15:39:16
0001 /* 0002 * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org> 0003 * 0004 * Redistribution and use in source and binary forms, with or without 0005 * modification, are permitted provided that the following conditions 0006 * are met: 0007 * 1. Redistributions of source code must retain the above copyright 0008 * notice, this list of conditions and the following disclaimer. 0009 * 2. Redistributions in binary form must reproduce the above copyright 0010 * notice, this list of conditions and the following disclaimer in the 0011 * documentation and/or other materials provided with the distribution. 0012 * 0013 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 0014 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 0015 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 0016 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 0017 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 0018 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 0019 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 0020 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 0021 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 0022 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 0023 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 0024 */ 0025 0026 #if ENABLE(SVG) 0027 #include "SVGResourceMarker.h" 0028 0029 #include "AffineTransform.h" 0030 #include "GraphicsContext.h" 0031 #include "RenderSVGViewportContainer.h" 0032 #include "TextStream.h" 0033 0034 namespace WebCore 0035 { 0036 0037 SVGResourceMarker::SVGResourceMarker() 0038 : SVGResource() 0039 , m_refX(0.0) 0040 , m_refY(0.0) 0041 , m_angle(-1) // just like using setAutoAngle() 0042 , m_marker(0) 0043 , m_useStrokeWidth(true) 0044 { 0045 } 0046 0047 SVGResourceMarker::~SVGResourceMarker() 0048 { 0049 } 0050 0051 void SVGResourceMarker::setMarker(RenderSVGViewportContainer *marker) 0052 { 0053 m_marker = marker; 0054 } 0055 0056 void SVGResourceMarker::setRef(double refX, double refY) 0057 { 0058 m_refX = refX; 0059 m_refY = refY; 0060 } 0061 0062 void SVGResourceMarker::draw(GraphicsContext *context, const FloatRect &rect, double x, double y, double strokeWidth, double angle) 0063 { 0064 if (!m_marker) { 0065 return; 0066 } 0067 0068 static HashSet<SVGResourceMarker *> currentlyDrawingMarkers; 0069 0070 // avoid drawing circular marker references 0071 if (currentlyDrawingMarkers.contains(this)) { 0072 return; 0073 } 0074 0075 currentlyDrawingMarkers.add(this); 0076 0077 AffineTransform transform; 0078 transform.translate(x, y); 0079 transform.rotate(m_angle > -1 ? m_angle : angle); 0080 0081 // refX and refY are given in coordinates relative to the viewport established by the marker, yet they affect 0082 // the translation performed on the viewport itself. 0083 AffineTransform viewportTransform; 0084 if (m_useStrokeWidth) { 0085 viewportTransform.scale(strokeWidth, strokeWidth); 0086 } 0087 viewportTransform *= m_marker->viewportTransform(); 0088 double refX, refY; 0089 viewportTransform.map(m_refX, m_refY, &refX, &refY); 0090 transform.translate(-refX, -refY); 0091 0092 if (m_useStrokeWidth) { 0093 transform.scale(strokeWidth, strokeWidth); 0094 } 0095 0096 // FIXME: PaintInfo should be passed into this method instead of being created here 0097 // FIXME: bounding box fractions are lost 0098 RenderObject::PaintInfo info(context, enclosingIntRect(rect), PaintPhaseForeground, 0, 0, 0); 0099 0100 context->save(); 0101 context->concatCTM(transform); 0102 m_marker->setDrawsContents(true); 0103 m_marker->paint(info, 0, 0); 0104 m_marker->setDrawsContents(false); 0105 context->restore(); 0106 0107 m_cachedBounds = transform.mapRect(m_marker->absoluteClippedOverflowRect()); 0108 0109 currentlyDrawingMarkers.remove(this); 0110 } 0111 0112 FloatRect SVGResourceMarker::cachedBounds() const 0113 { 0114 return m_cachedBounds; 0115 } 0116 0117 TextStream &SVGResourceMarker::externalRepresentation(TextStream &ts) const 0118 { 0119 ts << "[type=MARKER]" 0120 << " [angle="; 0121 0122 if (angle() == -1) { 0123 ts << "auto" << "]"; 0124 } else { 0125 ts << angle() << "]"; 0126 } 0127 0128 ts << " [ref x=" << refX() << " y=" << refY() << "]"; 0129 return ts; 0130 } 0131 0132 SVGResourceMarker *getMarkerById(Document *document, const AtomicString &id) 0133 { 0134 SVGResource *resource = getResourceById(document, id); 0135 if (resource && resource->isMarker()) { 0136 return static_cast<SVGResourceMarker *>(resource); 0137 } 0138 0139 return 0; 0140 } 0141 0142 } // namespace WebCore 0143 0144 #endif