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/*
Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
2004, 2005, 2006 Rob Buis <buis@kde.org>
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) && ENABLE(FILTERS)
#include "SVGFEColorMatrixElement.h"
#include "MappedAttribute.h"
#include "SVGNames.h"
#include "SVGNumberList.h"
#include "SVGResourceFilter.h"
namespace WebCore {
SVGFEColorMatrixElement::SVGFEColorMatrixElement(const QualifiedName& tagName, Document* doc)
: SVGFilterPrimitiveStandardAttributes(tagName, doc)
, m_type(FECOLORMATRIX_TYPE_UNKNOWN)
, m_values(SVGNumberList::create(SVGNames::valuesAttr))
{
}
SVGFEColorMatrixElement::~SVGFEColorMatrixElement()
{
}
void SVGFEColorMatrixElement::parseMappedAttribute(MappedAttribute* attr)
{
const String& value = attr->value();
if (attr->name() == SVGNames::typeAttr) {
if (value == "matrix")
setTypeBaseValue(FECOLORMATRIX_TYPE_MATRIX);
else if (value == "saturate")
setTypeBaseValue(FECOLORMATRIX_TYPE_SATURATE);
else if (value == "hueRotate")
setTypeBaseValue(FECOLORMATRIX_TYPE_HUEROTATE);
else if (value == "luminanceToAlpha")
setTypeBaseValue(FECOLORMATRIX_TYPE_LUMINANCETOALPHA);
}
else if (attr->name() == SVGNames::inAttr)
setIn1BaseValue(value);
else if (attr->name() == SVGNames::valuesAttr)
valuesBaseValue()->parse(value);
else
SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
}
void SVGFEColorMatrixElement::synchronizeProperty(const QualifiedName& attrName)
{
SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);
if (attrName == anyQName()) {
synchronizeType();
synchronizeIn1();
synchronizeValues();
return;
}
if (attrName == SVGNames::typeAttr)
synchronizeType();
else if (attrName == SVGNames::inAttr)
synchronizeIn1();
else if (attrName == SVGNames::valuesAttr)
synchronizeValues();
}
bool SVGFEColorMatrixElement::build(SVGResourceFilter* filterResource)
{
FilterEffect* input1 = filterResource->builder()->getEffectById(in1());
if (!input1)
return false;
Vector<float> filterValues;
SVGNumberList* numbers = values();
const ColorMatrixType filterType(static_cast<const ColorMatrixType>(type()));
// Use defaults if values is empty (SVG 1.1 15.10).
if (!hasAttribute(SVGNames::valuesAttr)) {
switch (filterType) {
case FECOLORMATRIX_TYPE_MATRIX:
for (size_t i = 0; i < 20; i++)
filterValues.append((i % 6) ? 0.0f : 1.0f);
break;
case FECOLORMATRIX_TYPE_HUEROTATE:
filterValues.append(0.0f);
break;
case FECOLORMATRIX_TYPE_SATURATE:
filterValues.append(1.0f);
break;
default:
break;
}
} else {
size_t size = numbers->numberOfItems();
for (size_t i = 0; i < size; i++) {
ExceptionCode ec = 0;
filterValues.append(numbers->getItem(i, ec));
}
size = filterValues.size();
if ((filterType == FECOLORMATRIX_TYPE_MATRIX && size != 20)
|| (filterType == FECOLORMATRIX_TYPE_HUEROTATE && size != 1)
|| (filterType == FECOLORMATRIX_TYPE_SATURATE && (size != 1
|| filterValues[0] < 0.0f || filterValues[0] > 1.0f)))
return false;
}
RefPtr<FilterEffect> effect = FEColorMatrix::create(input1, filterType, filterValues);
filterResource->addFilterEffect(this, effect.release());
return true;
}
} //namespace WebCore
#endif // ENABLE(SVG)
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