/*
* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
*
* 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 "config.h"
#if ENABLE(SVG)
#include "SVGGradientElement.h"
#include "Attribute.h"
#include "CSSStyleSelector.h"
#include "RenderSVGHiddenContainer.h"
#include "RenderSVGPath.h"
#include "RenderSVGResourceLinearGradient.h"
#include "RenderSVGResourceRadialGradient.h"
#include "SVGNames.h"
#include "SVGStopElement.h"
#include "SVGTransformList.h"
#include "SVGTransformable.h"
#include "SVGUnitTypes.h"
namespace WebCore {
// Animated property definitions
DEFINE_ANIMATED_ENUMERATION(SVGGradientElement, SVGNames::spreadMethodAttr, SpreadMethod, spreadMethod)
DEFINE_ANIMATED_ENUMERATION(SVGGradientElement, SVGNames::gradientUnitsAttr, GradientUnits, gradientUnits)
DEFINE_ANIMATED_TRANSFORM_LIST(SVGGradientElement, SVGNames::gradientTransformAttr, GradientTransform, gradientTransform)
DEFINE_ANIMATED_STRING(SVGGradientElement, XLinkNames::hrefAttr, Href, href)
DEFINE_ANIMATED_BOOLEAN(SVGGradientElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
SVGGradientElement::SVGGradientElement(const QualifiedName& tagName, Document* document)
: SVGStyledElement(tagName, document)
, m_gradientUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
{
}
void SVGGradientElement::parseMappedAttribute(Attribute* 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 newList;
if (!SVGTransformable::parseTransformAttribute(newList, attr->value()))
newList.clear();
detachAnimatedGradientTransformListWrappers(newList.size());
setGradientTransformBaseValue(newList);
} else if (attr->name() == SVGNames::spreadMethodAttr) {
if (attr->value() == "reflect")
setSpreadMethodBaseValue(SpreadMethodReflect);
else if (attr->value() == "repeat")
setSpreadMethodBaseValue(SpreadMethodRepeat);
else if (attr->value() == "pad")
setSpreadMethodBaseValue(SpreadMethodPad);
} else {
if (SVGURIReference::parseMappedAttribute(attr))
return;
if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
return;
SVGStyledElement::parseMappedAttribute(attr);
}
}
void SVGGradientElement::svgAttributeChanged(const QualifiedName& attrName)
{
SVGStyledElement::svgAttributeChanged(attrName);
RenderObject* object = renderer();
if (!object)
return;
if (attrName == SVGNames::gradientUnitsAttr
|| attrName == SVGNames::gradientTransformAttr
|| attrName == SVGNames::spreadMethodAttr
|| SVGURIReference::isKnownAttribute(attrName)
|| SVGExternalResourcesRequired::isKnownAttribute(attrName)
|| SVGStyledElement::isKnownAttribute(attrName))
object->setNeedsLayout(true);
}
void SVGGradientElement::synchronizeProperty(const QualifiedName& attrName)
{
SVGStyledElement::synchronizeProperty(attrName);
if (attrName == anyQName()) {
synchronizeGradientUnits();
synchronizeGradientTransform();
synchronizeSpreadMethod();
synchronizeExternalResourcesRequired();
synchronizeHref();
return;
}
if (attrName == SVGNames::gradientUnitsAttr)
synchronizeGradientUnits();
else if (attrName == SVGNames::gradientTransformAttr)
synchronizeGradientTransform();
else if (attrName == SVGNames::spreadMethodAttr)
synchronizeSpreadMethod();
else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
synchronizeExternalResourcesRequired();
else if (SVGURIReference::isKnownAttribute(attrName))
synchronizeHref();
}
void SVGGradientElement::fillPassedAttributeToPropertyTypeMap(AttributeToPropertyTypeMap& attributeToPropertyTypeMap)
{
SVGStyledElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
attributeToPropertyTypeMap.set(SVGNames::spreadMethodAttr, AnimatedEnumeration);
attributeToPropertyTypeMap.set(SVGNames::gradientUnitsAttr, AnimatedEnumeration);
attributeToPropertyTypeMap.set(SVGNames::gradientTransformAttr, AnimatedTransformList);
attributeToPropertyTypeMap.set(XLinkNames::hrefAttr, AnimatedString);
}
void SVGGradientElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
if (changedByParser)
return;
if (RenderObject* object = renderer())
object->setNeedsLayout(true);
}
Vector<Gradient::ColorStop> SVGGradientElement::buildStops()
{
Vector<Gradient::ColorStop> stops;
float previousOffset = 0.0f;
for (Node* n = firstChild(); n; n = n->nextSibling()) {
SVGElement* element = n->isSVGElement() ? static_cast<SVGElement*>(n) : 0;
if (!element || !element->isGradientStop())
continue;
SVGStopElement* stop = static_cast<SVGStopElement*>(element);
Color color = stop->stopColorIncludingOpacity();
// Figure out right monotonic offset
float offset = stop->offset();
offset = std::min(std::max(previousOffset, offset), 1.0f);
previousOffset = offset;
// Extract individual channel values
// FIXME: Why doesn't ColorStop take a Color and an offset??
float r, g, b, a;
color.getRGBA(r, g, b, a);
stops.append(Gradient::ColorStop(offset, r, g, b, a));
}
return stops;
}
}
#endif // ENABLE(SVG)