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/*
* Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
* Copyright (C) 2018-2019 Apple Inc. 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"
#include "SVGFEConvolveMatrixElement.h"
#include "FilterEffect.h"
#include "FloatPoint.h"
#include "IntPoint.h"
#include "IntSize.h"
#include "SVGFilterBuilder.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEConvolveMatrixElement);
inline SVGFEConvolveMatrixElement::SVGFEConvolveMatrixElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feConvolveMatrixTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEConvolveMatrixElement::m_in1>();
PropertyRegistry::registerProperty<SVGNames::orderAttr, &SVGFEConvolveMatrixElement::m_orderX, &SVGFEConvolveMatrixElement::m_orderY>();
PropertyRegistry::registerProperty<SVGNames::kernelMatrixAttr, &SVGFEConvolveMatrixElement::m_kernelMatrix>();
PropertyRegistry::registerProperty<SVGNames::divisorAttr, &SVGFEConvolveMatrixElement::m_divisor>();
PropertyRegistry::registerProperty<SVGNames::biasAttr, &SVGFEConvolveMatrixElement::m_bias>();
PropertyRegistry::registerProperty<SVGNames::targetXAttr, &SVGFEConvolveMatrixElement::m_targetX>();
PropertyRegistry::registerProperty<SVGNames::targetYAttr, &SVGFEConvolveMatrixElement::m_targetY>();
PropertyRegistry::registerProperty<SVGNames::edgeModeAttr, EdgeModeType, &SVGFEConvolveMatrixElement::m_edgeMode>();
PropertyRegistry::registerProperty<SVGNames::kernelUnitLengthAttr, &SVGFEConvolveMatrixElement::m_kernelUnitLengthX, &SVGFEConvolveMatrixElement::m_kernelUnitLengthY>();
PropertyRegistry::registerProperty<SVGNames::preserveAlphaAttr, &SVGFEConvolveMatrixElement::m_preserveAlpha>();
});
}
Ref<SVGFEConvolveMatrixElement> SVGFEConvolveMatrixElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEConvolveMatrixElement(tagName, document));
}
void SVGFEConvolveMatrixElement::parseAttribute(const QualifiedName& name, const AtomString& value)
{
if (name == SVGNames::inAttr) {
m_in1->setBaseValInternal(value);
return;
}
if (name == SVGNames::orderAttr) {
float x, y;
if (parseNumberOptionalNumber(value, x, y) && x >= 1 && y >= 1) {
m_orderX->setBaseValInternal(x);
m_orderY->setBaseValInternal(y);
} else
document().accessSVGExtensions().reportWarning("feConvolveMatrix: problem parsing order=\"" + value + "\". Filtered element will not be displayed.");
return;
}
if (name == SVGNames::edgeModeAttr) {
EdgeModeType propertyValue = SVGPropertyTraits<EdgeModeType>::fromString(value);
if (propertyValue > 0)
m_edgeMode->setBaseValInternal<EdgeModeType>(propertyValue);
else
document().accessSVGExtensions().reportWarning("feConvolveMatrix: problem parsing edgeMode=\"" + value + "\". Filtered element will not be displayed.");
return;
}
if (name == SVGNames::kernelMatrixAttr) {
m_kernelMatrix->baseVal()->parse(value);
return;
}
if (name == SVGNames::divisorAttr) {
float divisor = value.toFloat();
if (divisor)
m_divisor->setBaseValInternal(divisor);
else
document().accessSVGExtensions().reportWarning("feConvolveMatrix: problem parsing divisor=\"" + value + "\". Filtered element will not be displayed.");
return;
}
if (name == SVGNames::biasAttr) {
m_bias->setBaseValInternal(value.toFloat());
return;
}
if (name == SVGNames::targetXAttr) {
m_targetX->setBaseValInternal(value.string().toUIntStrict());
return;
}
if (name == SVGNames::targetYAttr) {
m_targetY->setBaseValInternal(value.string().toUIntStrict());
return;
}
if (name == SVGNames::kernelUnitLengthAttr) {
float x, y;
if (parseNumberOptionalNumber(value, x, y) && x > 0 && y > 0) {
m_kernelUnitLengthX->setBaseValInternal(x);
m_kernelUnitLengthY->setBaseValInternal(y);
} else
document().accessSVGExtensions().reportWarning("feConvolveMatrix: problem parsing kernelUnitLength=\"" + value + "\". Filtered element will not be displayed.");
return;
}
if (name == SVGNames::preserveAlphaAttr) {
if (value == "true")
m_preserveAlpha->setBaseValInternal(true);
else if (value == "false")
m_preserveAlpha->setBaseValInternal(false);
else
document().accessSVGExtensions().reportWarning("feConvolveMatrix: problem parsing preserveAlphaAttr=\"" + value + "\". Filtered element will not be displayed.");
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
bool SVGFEConvolveMatrixElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
{
FEConvolveMatrix* convolveMatrix = static_cast<FEConvolveMatrix*>(effect);
if (attrName == SVGNames::edgeModeAttr)
return convolveMatrix->setEdgeMode(edgeMode());
if (attrName == SVGNames::divisorAttr)
return convolveMatrix->setDivisor(divisor());
if (attrName == SVGNames::biasAttr)
return convolveMatrix->setBias(bias());
if (attrName == SVGNames::targetXAttr)
return convolveMatrix->setTargetOffset(IntPoint(targetX(), targetY()));
if (attrName == SVGNames::targetYAttr)
return convolveMatrix->setTargetOffset(IntPoint(targetX(), targetY()));
if (attrName == SVGNames::kernelUnitLengthAttr)
return convolveMatrix->setKernelUnitLength(FloatPoint(kernelUnitLengthX(), kernelUnitLengthY()));
if (attrName == SVGNames::preserveAlphaAttr)
return convolveMatrix->setPreserveAlpha(preserveAlpha());
ASSERT_NOT_REACHED();
return false;
}
void SVGFEConvolveMatrixElement::setOrder(float x, float y)
{
m_orderX->setBaseValInternal(x);
m_orderY->setBaseValInternal(y);
invalidate();
}
void SVGFEConvolveMatrixElement::setKernelUnitLength(float x, float y)
{
m_kernelUnitLengthX->setBaseValInternal(x);
m_kernelUnitLengthY->setBaseValInternal(y);
invalidate();
}
void SVGFEConvolveMatrixElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::edgeModeAttr || attrName == SVGNames::divisorAttr || attrName == SVGNames::biasAttr || attrName == SVGNames::targetXAttr || attrName == SVGNames::targetYAttr || attrName == SVGNames::kernelUnitLengthAttr || attrName == SVGNames::preserveAlphaAttr) {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
return;
}
if (attrName == SVGNames::inAttr || attrName == SVGNames::orderAttr || attrName == SVGNames::kernelMatrixAttr) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEConvolveMatrixElement::build(SVGFilterBuilder* filterBuilder, Filter& filter) const
{
auto input1 = filterBuilder->getEffectById(in1());
if (!input1)
return nullptr;
int orderXValue = orderX();
int orderYValue = orderY();
if (!hasAttribute(SVGNames::orderAttr)) {
orderXValue = 3;
orderYValue = 3;
}
// Spec says order must be > 0. Bail if it is not.
if (orderXValue < 1 || orderYValue < 1)
return nullptr;
auto& kernelMatrix = this->kernelMatrix();
int kernelMatrixSize = kernelMatrix.items().size();
// The spec says this is a requirement, and should bail out if fails
if (orderXValue * orderYValue != kernelMatrixSize)
return nullptr;
int targetXValue = targetX();
int targetYValue = targetY();
if (hasAttribute(SVGNames::targetXAttr) && (targetXValue < 0 || targetXValue >= orderXValue))
return nullptr;
// The spec says the default value is: targetX = floor ( orderX / 2 ))
if (!hasAttribute(SVGNames::targetXAttr))
targetXValue = static_cast<int>(floorf(orderXValue / 2));
if (hasAttribute(SVGNames::targetYAttr) && (targetYValue < 0 || targetYValue >= orderYValue))
return nullptr;
// The spec says the default value is: targetY = floor ( orderY / 2 ))
if (!hasAttribute(SVGNames::targetYAttr))
targetYValue = static_cast<int>(floorf(orderYValue / 2));
// Spec says default kernelUnitLength is 1.0, and a specified length cannot be 0.
int kernelUnitLengthXValue = kernelUnitLengthX();
int kernelUnitLengthYValue = kernelUnitLengthY();
if (!hasAttribute(SVGNames::kernelUnitLengthAttr)) {
kernelUnitLengthXValue = 1;
kernelUnitLengthYValue = 1;
}
if (kernelUnitLengthXValue <= 0 || kernelUnitLengthYValue <= 0)
return nullptr;
float divisorValue = divisor();
if (hasAttribute(SVGNames::divisorAttr) && !divisorValue)
return nullptr;
if (!hasAttribute(SVGNames::divisorAttr)) {
for (int i = 0; i < kernelMatrixSize; ++i)
divisorValue += kernelMatrix.items()[i]->value();
if (!divisorValue)
divisorValue = 1;
}
auto effect = FEConvolveMatrix::create(filter, IntSize(orderXValue, orderYValue), divisorValue, bias(), IntPoint(targetXValue, targetYValue), edgeMode(), FloatPoint(kernelUnitLengthXValue, kernelUnitLengthYValue), preserveAlpha(), kernelMatrix);
effect->inputEffects().append(input1);
return effect;
}
} // namespace WebCore