File indexing completed on 2024-04-28 11:39:13

 /*
     Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
     Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
     Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 
     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.
 */
 
 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
 #include "SVGFilterElement.h"
 
 #include "Attr.h"
 #include "SVGFilterPrimitiveStandardAttributes.h"
 #include "SVGLength.h"
 #include "SVGNames.h"
 #include "SVGUnitTypes.h"
 
 namespace WebCore
 {
 
 SVGFilterElement::SVGFilterElement(const QualifiedName &tagName, Document *doc)
     : SVGStyledElement(tagName, doc)
     , SVGURIReference()
     , SVGLangSpace()
     , SVGExternalResourcesRequired()
     , m_filterUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
     , m_primitiveUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
     , m_x(this, LengthModeWidth)
     , m_y(this, LengthModeHeight)
     , m_width(this, LengthModeWidth)
     , m_height(this, LengthModeHeight)
     , m_filterResX(0)
     , m_filterResY(0)
 {
     // Spec: If the attribute is not specified, the effect is as if a value of "-10%" were specified.
     setXBaseValue(SVGLength(this, LengthModeWidth, "-10%"));
     setYBaseValue(SVGLength(this, LengthModeHeight, "-10%"));
 
     // Spec: If the attribute is not specified, the effect is as if a value of "120%" were specified.
     setWidthBaseValue(SVGLength(this, LengthModeWidth, "120%"));
     setHeightBaseValue(SVGLength(this, LengthModeHeight, "120%"));
 }
 
 SVGFilterElement::~SVGFilterElement()
 {
 }
 
 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, int, Enumeration, enumeration, FilterUnits, filterUnits, SVGNames::filterUnitsAttr, m_filterUnits)
 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, int, Enumeration, enumeration, PrimitiveUnits, primitiveUnits, SVGNames::primitiveUnitsAttr, m_primitiveUnits)
 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, SVGLength, Length, length, X, x, SVGNames::xAttr, m_x)
 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, SVGLength, Length, length, Y, y, SVGNames::yAttr, m_y)
 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, SVGLength, Length, length, Width, width, SVGNames::widthAttr, m_width)
 ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, SVGLength, Length, length, Height, height, SVGNames::heightAttr, m_height)
 ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFilterElement, long, Integer, integer, FilterResX, filterResX, SVGNames::filterResAttr, "filterResX", m_filterResX)
 ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFilterElement, long, Integer, integer, FilterResY, filterResY, SVGNames::filterResAttr, "filterResY", m_filterResY)
 
 void SVGFilterElement::setFilterRes(unsigned long, unsigned long) const
 {
 }
 
 void SVGFilterElement::parseMappedAttribute(MappedAttribute *attr)
 {
     const String &value = attr->value();
     if (attr->name() == SVGNames::filterUnitsAttr) {
         if (value == "userSpaceOnUse") {
             setFilterUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
         } else if (value == "objectBoundingBox") {
             setFilterUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
         }
     } else if (attr->name() == SVGNames::primitiveUnitsAttr) {
         if (value == "userSpaceOnUse") {
             setPrimitiveUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
         } else if (value == "objectBoundingBox") {
             setPrimitiveUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
         }
     } else if (attr->name() == SVGNames::xAttr) {
         setXBaseValue(SVGLength(this, LengthModeWidth, value));
     } else if (attr->name() == SVGNames::yAttr) {
         setYBaseValue(SVGLength(this, LengthModeHeight, value));
     } else if (attr->name() == SVGNames::widthAttr) {
         setWidthBaseValue(SVGLength(this, LengthModeWidth, value));
     } else if (attr->name() == SVGNames::heightAttr) {
         setHeightBaseValue(SVGLength(this, LengthModeHeight, value));
     } else {
         if (SVGURIReference::parseMappedAttribute(attr)) {
             return;
         }
         if (SVGLangSpace::parseMappedAttribute(attr)) {
             return;
         }
         if (SVGExternalResourcesRequired::parseMappedAttribute(attr)) {
             return;
         }
 
         SVGStyledElement::parseMappedAttribute(attr);
     }
 }
 
 SVGResource *SVGFilterElement::canvasResource()
 {
     if (!attached()) {
         return 0;
     }
 
     if (!m_filter) {
         m_filter = new SVGResourceFilter();
     }
 
     bool filterBBoxMode = filterUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
     m_filter->setFilterBoundingBoxMode(filterBBoxMode);
 
     float _x, _y, _width, _height;
 
     if (filterBBoxMode) {
         _x = x().valueAsPercentage();
         _y = y().valueAsPercentage();
         _width = width().valueAsPercentage();
         _height = height().valueAsPercentage();
     } else {
         m_filter->setXBoundingBoxMode(x().unitType() == LengthTypePercentage);
         m_filter->setYBoundingBoxMode(y().unitType() == LengthTypePercentage);
 
         _x = x().value();
         _y = y().value();
         _width = width().value();
         _height = height().value();
     }
 
     m_filter->setFilterRect(FloatRect(_x, _y, _width, _height));
 
     bool primitiveBBoxMode = primitiveUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
     m_filter->setEffectBoundingBoxMode(primitiveBBoxMode);
 
     // TODO : use switch/case instead?
     m_filter->clearEffects();
     for (Node *n = firstChild(); n != 0; n = n->nextSibling()) {
         SVGElement *element = 0;
         if (n->isSVGElement()) {
             element = static_cast<SVGElement *>(n);
         }
         if (element && element->isFilterEffect()) {
             SVGFilterPrimitiveStandardAttributes *filterAttributes = static_cast<SVGFilterPrimitiveStandardAttributes *>(element);
             SVGFilterEffect *filterEffect = filterAttributes->filterEffect(m_filter.get());
             if (!filterEffect) {
                 continue;
             }
 
             m_filter->addFilterEffect(filterEffect);
         }
     }
 
     return m_filter.get();
 }
 
 }
 
 #endif // ENABLE(SVG)