third_party/WebKit/Source/core/svg/SVGPolyElement.cpp

   1 /*
   2  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
   3  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public License
  16  * along with this library; see the file COPYING.LIB.  If not, write to
  17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #include "config.h"
  22 #include "core/svg/SVGPolyElement.h"
  23
  24 #include "core/layout/svg/LayoutSVGShape.h"
  25 #include "core/svg/SVGAnimatedPointList.h"
  26 #include "core/svg/SVGParserUtilities.h"
  27
  28 namespace blink {
  29
  30 SVGPolyElement::SVGPolyElement(const QualifiedName& tagName, Document& document)
  31     : SVGGeometryElement(tagName, document)
  32     , m_points(SVGAnimatedPointList::create(this, SVGNames::pointsAttr, SVGPointList::create()))
  33 {
  34     addToPropertyMap(m_points);
  35 }
  36
  37 DEFINE_TRACE(SVGPolyElement)
  38 {
  39     visitor->trace(m_points);
  40     SVGGeometryElement::trace(visitor);
  41 }
  42
  43 Path SVGPolyElement::asPathFromPoints() const
  44 {
  45     Path path;
  46
  47     RefPtrWillBeRawPtr<SVGPointList> pointsValue = points()->currentValue();
  48     if (pointsValue->isEmpty())
  49         return path;
  50
  51     SVGPointList::ConstIterator it = pointsValue->begin();
  52     SVGPointList::ConstIterator itEnd = pointsValue->end();
  53     ASSERT(it != itEnd);
  54     path.moveTo(it->value());
  55     ++it;
  56
  57     for (; it != itEnd; ++it)
  58         path.addLineTo(it->value());
  59
  60     return path;
  61 }
  62
  63 void SVGPolyElement::svgAttributeChanged(const QualifiedName& attrName)
  64 {
  65     if (attrName == SVGNames::pointsAttr) {
  66         SVGElement::InvalidationGuard invalidationGuard(this);
  67
  68         LayoutSVGShape* layoutObject = toLayoutSVGShape(this->layoutObject());
  69         if (!layoutObject)
  70             return;
  71
  72         layoutObject->setNeedsShapeUpdate();
  73         markForLayoutAndParentResourceInvalidation(layoutObject);
  74         return;
  75     }
  76
  77     SVGGeometryElement::svgAttributeChanged(attrName);
  78 }
  79
  80 }