1 /* 2 Copyright (C) Research In Motion Limited 2010. All rights reserved. 3 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org> 4 2004, 2005, 2008 Rob Buis <buis (at) kde.org> 5 2005, 2007 Eric Seidel <eric (at) webkit.org> 6 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 aint 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 #include "config.h" 25 26 #if ENABLE(SVG) 27 #include "SVGMarkerLayoutInfo.h" 28 29 #include "RenderSVGViewportContainer.h" 30 #include "SVGResourceMarker.h" 31 32 namespace WebCore { 33 34 SVGMarkerLayoutInfo::SVGMarkerLayoutInfo() 35 : m_midMarker(0) 36 , m_elementIndex(0) 37 , m_strokeWidth(0) 38 { 39 } 40 41 SVGMarkerLayoutInfo::~SVGMarkerLayoutInfo() 42 { 43 } 44 45 static inline void processStartAndMidMarkers(void* infoPtr, const PathElement* element) 46 { 47 SVGMarkerLayoutInfo& info = *reinterpret_cast<SVGMarkerLayoutInfo*>(infoPtr); 48 SVGMarkerData& markerData = info.markerData(); 49 int& elementIndex = info.elementIndex(); 50 51 // First update the outslope for the previous element 52 markerData.updateOutslope(element->points[0]); 53 54 // Draw the marker for the previous element 55 SVGResourceMarker* marker = markerData.marker(); 56 if (elementIndex > 0 && marker) 57 info.addLayoutedMarker(marker, markerData.origin(), markerData.currentAngle()); 58 59 // Update our marker data for this element 60 markerData.updateMarkerDataForPathElement(element); 61 62 // After drawing the start marker, switch to drawing mid markers 63 if (elementIndex == 1) 64 markerData.updateTypeAndMarker(SVGMarkerData::Mid, info.midMarker()); 65 66 ++elementIndex; 67 } 68 69 FloatRect SVGMarkerLayoutInfo::calculateBoundaries(SVGResourceMarker* startMarker, SVGResourceMarker* midMarker, SVGResourceMarker* endMarker, float strokeWidth, const Path& path) 70 { 71 m_layout.clear(); 72 m_midMarker = midMarker; 73 m_strokeWidth = strokeWidth; 74 m_elementIndex = 0; 75 m_markerData = SVGMarkerData(SVGMarkerData::Start, startMarker); 76 path.apply(this, processStartAndMidMarkers); 77 78 if (endMarker) { 79 m_markerData.updateTypeAndMarker(SVGMarkerData::End, endMarker); 80 addLayoutedMarker(endMarker, m_markerData.origin(), m_markerData.currentAngle()); 81 } 82 83 if (m_layout.isEmpty()) 84 return FloatRect(); 85 86 Vector<MarkerLayout>::iterator it = m_layout.begin(); 87 Vector<MarkerLayout>::iterator end = m_layout.end(); 88 89 FloatRect bounds; 90 for (; it != end; ++it) { 91 MarkerLayout& layout = *it; 92 93 RenderSVGViewportContainer* markerContent = layout.marker->renderer(); 94 ASSERT(markerContent); 95 96 bounds.unite(markerContent->markerBoundaries(layout.matrix)); 97 } 98 99 return bounds; 100 } 101 102 void SVGMarkerLayoutInfo::drawMarkers(RenderObject::PaintInfo& paintInfo) 103 { 104 if (m_layout.isEmpty()) 105 return; 106 107 Vector<MarkerLayout>::iterator it = m_layout.begin(); 108 Vector<MarkerLayout>::iterator end = m_layout.end(); 109 110 for (; it != end; ++it) { 111 MarkerLayout& layout = *it; 112 layout.marker->draw(paintInfo, layout.matrix); 113 } 114 } 115 116 void SVGMarkerLayoutInfo::addLayoutedMarker(SVGResourceMarker* marker, const FloatPoint& origin, float angle) 117 { 118 ASSERT(marker); 119 m_layout.append(MarkerLayout(marker, marker->markerTransformation(origin, angle, m_strokeWidth))); 120 } 121 122 } 123 124 #endif // ENABLE(SVG) 125
