File indexing completed on 2024-04-28 15:24:34

 /*
     Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
 
     This file is part of the KDE project
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #include "wtf/Platform.h"
 
 #if ENABLE(SVG)
 #include "SVGGradientElement.h"
 
 #include "css/cssstyleselector.h"
 #include "RenderPath.h"
 #include "RenderSVGHiddenContainer.h"
 #include "SVGNames.h"
 #include "SVGPaintServerLinearGradient.h"
 #include "SVGPaintServerRadialGradient.h"
 #include "SVGStopElement.h"
 #include "SVGTransformList.h"
 #include "SVGTransformable.h"
 #include "SVGUnitTypes.h"
 
 namespace WebCore
 {
 
 SVGGradientElement::SVGGradientElement(const QualifiedName &tagName, Document *doc)
     : SVGStyledElement(tagName, doc)
     , SVGURIReference()
     , SVGExternalResourcesRequired()
     , m_spreadMethod(0)
     , m_gradientUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
     , m_gradientTransform(SVGTransformList::create(SVGNames::gradientTransformAttr))
 {
 }
 
 SVGGradientElement::~SVGGradientElement()
 {
 }
 
 ANIMATED_PROPERTY_DEFINITIONS(SVGGradientElement, int, Enumeration, enumeration, GradientUnits, gradientUnits, SVGNames::gradientUnitsAttr, m_gradientUnits)
 ANIMATED_PROPERTY_DEFINITIONS(SVGGradientElement, SVGTransformList *, TransformList, transformList, GradientTransform, gradientTransform, SVGNames::gradientTransformAttr, m_gradientTransform.get())
 ANIMATED_PROPERTY_DEFINITIONS(SVGGradientElement, int, Enumeration, enumeration, SpreadMethod, spreadMethod, SVGNames::spreadMethodAttr, m_spreadMethod)
 
 void SVGGradientElement::parseMappedAttribute(MappedAttribute *attr)
 {
     if (attr->name() == SVGNames::gradientUnitsAttr) {
         if (attr->value() == "userSpaceOnUse") {
             setGradientUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
         } else if (attr->value() == "objectBoundingBox") {
             setGradientUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
         }
     } else if (attr->name() == SVGNames::gradientTransformAttr) {
         SVGTransformList *gradientTransforms = gradientTransformBaseValue();
         if (!SVGTransformable::parseTransformAttribute(gradientTransforms, attr->value())) {
             ExceptionCode ec = 0;
             gradientTransforms->clear(ec);
         }
     } else if (attr->name() == SVGNames::spreadMethodAttr) {
         if (attr->value() == "reflect") {
             setSpreadMethodBaseValue(SVG_SPREADMETHOD_REFLECT);
         } else if (attr->value() == "repeat") {
             setSpreadMethodBaseValue(SVG_SPREADMETHOD_REPEAT);
         } else if (attr->value() == "pad") {
             setSpreadMethodBaseValue(SVG_SPREADMETHOD_PAD);
         }
     } else {
         if (SVGURIReference::parseMappedAttribute(attr)) {
             return;
         }
         if (SVGExternalResourcesRequired::parseMappedAttribute(attr)) {
             return;
         }
 
         SVGStyledElement::parseMappedAttribute(attr);
     }
 }
 
 void SVGGradientElement::svgAttributeChanged(const QualifiedName &attrName)
 {
     SVGStyledElement::svgAttributeChanged(attrName);
 
     if (!m_resource) {
         return;
     }
 
     if (attrName == SVGNames::gradientUnitsAttr ||
             attrName == SVGNames::gradientTransformAttr ||
             attrName == SVGNames::spreadMethodAttr ||
             SVGURIReference::isKnownAttribute(attrName) ||
             SVGExternalResourcesRequired::isKnownAttribute(attrName) ||
             SVGStyledElement::isKnownAttribute(attrName)) {
         m_resource->invalidate();
     }
 }
 
 void SVGGradientElement::childrenChanged(bool changedByParser, Node *beforeChange, Node *afterChange, int childCountDelta)
 {
     SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
 
     if (m_resource) {
         m_resource->invalidate();
     }
 }
 
 RenderObject *SVGGradientElement::createRenderer(RenderArena *arena, RenderStyle *)
 {
     return new(arena) RenderSVGHiddenContainer(this);
 }
 
 SVGResource *SVGGradientElement::canvasResource()
 {
     // qCDebug(KHTML_LOG) << "request gradient paint server";
     if (!m_resource) {
         if (gradientType() == LinearGradientPaintServer) {
             m_resource = SVGPaintServerLinearGradient::create(this);
         } else {
             m_resource = SVGPaintServerRadialGradient::create(this);
         }
     }
 
     return m_resource.get();
 }
 
 Vector<SVGGradientStop> SVGGradientElement::buildStops() const
 {
     Vector<SVGGradientStop> stops;
 
     for (Node *n = firstChild(); n; n = n->nextSibling()) {
         SVGElement *element = n->isSVGElement() ? static_cast<SVGElement *>(n) : nullptr;
 
         if (element && element->isGradientStop()) {
             SVGStopElement *stop = static_cast<SVGStopElement *>(element);
             float stopOffset = stop->offset();
 
             RenderStyle *stopStyle = stop->computedStyle();
             QColor color   = stopStyle->svgStyle()->stopColor();
             float  opacity = stopStyle->svgStyle()->stopOpacity();
 
             stops.append(makeGradientStop(stopOffset, QColor(color.red(), color.green(), color.blue(), int(opacity * 255.))));
         }
     }
 
     return stops;
 }
 
 }
 
 #endif // ENABLE(SVG)