SVGFEConvolveMatrixElement.cpp [plain text]
#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 "SVGNumberListValues.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));
registerAttributes();
}
Ref<SVGFEConvolveMatrixElement> SVGFEConvolveMatrixElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEConvolveMatrixElement(tagName, document));
}
const AtomicString& SVGFEConvolveMatrixElement::kernelUnitLengthXIdentifier()
{
static NeverDestroyed<AtomicString> s_identifier("SVGKernelUnitLengthX", AtomicString::ConstructFromLiteral);
return s_identifier;
}
const AtomicString& SVGFEConvolveMatrixElement::kernelUnitLengthYIdentifier()
{
static NeverDestroyed<AtomicString> s_identifier("SVGKernelUnitLengthY", AtomicString::ConstructFromLiteral);
return s_identifier;
}
const AtomicString& SVGFEConvolveMatrixElement::orderXIdentifier()
{
static NeverDestroyed<AtomicString> s_identifier("SVGOrderX", AtomicString::ConstructFromLiteral);
return s_identifier;
}
const AtomicString& SVGFEConvolveMatrixElement::orderYIdentifier()
{
static NeverDestroyed<AtomicString> s_identifier("SVGOrderY", AtomicString::ConstructFromLiteral);
return s_identifier;
}
void SVGFEConvolveMatrixElement::registerAttributes()
{
auto& registry = attributeRegistry();
if (!registry.isEmpty())
return;
registry.registerAttribute<SVGNames::inAttr, &SVGFEConvolveMatrixElement::m_in1>();
registry.registerAttribute<SVGNames::orderAttr,
&SVGFEConvolveMatrixElement::orderXIdentifier, &SVGFEConvolveMatrixElement::m_orderX,
&SVGFEConvolveMatrixElement::orderYIdentifier, &SVGFEConvolveMatrixElement::m_orderY>();
registry.registerAttribute<SVGNames::kernelMatrixAttr, &SVGFEConvolveMatrixElement::m_kernelMatrix>();
registry.registerAttribute<SVGNames::divisorAttr, &SVGFEConvolveMatrixElement::m_divisor>();
registry.registerAttribute<SVGNames::biasAttr, &SVGFEConvolveMatrixElement::m_bias>();
registry.registerAttribute<SVGNames::targetXAttr, &SVGFEConvolveMatrixElement::m_targetX>();
registry.registerAttribute<SVGNames::targetYAttr, &SVGFEConvolveMatrixElement::m_targetY>();
registry.registerAttribute<SVGNames::edgeModeAttr, EdgeModeType, &SVGFEConvolveMatrixElement::m_edgeMode>();
registry.registerAttribute<SVGNames::kernelUnitLengthAttr,
&SVGFEConvolveMatrixElement::kernelUnitLengthXIdentifier, &SVGFEConvolveMatrixElement::m_kernelUnitLengthX,
&SVGFEConvolveMatrixElement::kernelUnitLengthYIdentifier, &SVGFEConvolveMatrixElement::m_kernelUnitLengthY>();
registry.registerAttribute<SVGNames::preserveAlphaAttr, &SVGFEConvolveMatrixElement::m_preserveAlpha>();
}
void SVGFEConvolveMatrixElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == SVGNames::inAttr) {
m_in1.setValue(value);
return;
}
if (name == SVGNames::orderAttr) {
float x, y;
if (parseNumberOptionalNumber(value, x, y) && x >= 1 && y >= 1) {
m_orderX.setValue(x);
m_orderY.setValue(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.setValue(propertyValue);
else
document().accessSVGExtensions().reportWarning("feConvolveMatrix: problem parsing edgeMode=\"" + value + "\". Filtered element will not be displayed.");
return;
}
if (name == SVGNames::kernelMatrixAttr) {
SVGNumberListValues newList;
newList.parse(value);
m_kernelMatrix.detachAnimatedListWrappers(attributeOwnerProxy(), newList.size());
m_kernelMatrix.setValue(WTFMove(newList));
return;
}
if (name == SVGNames::divisorAttr) {
float divisor = value.toFloat();
if (divisor)
m_divisor.setValue(divisor);
else
document().accessSVGExtensions().reportWarning("feConvolveMatrix: problem parsing divisor=\"" + value + "\". Filtered element will not be displayed.");
return;
}
if (name == SVGNames::biasAttr) {
m_bias.setValue(value.toFloat());
return;
}
if (name == SVGNames::targetXAttr) {
m_targetX.setValue(value.string().toUIntStrict());
return;
}
if (name == SVGNames::targetYAttr) {
m_targetY.setValue(value.string().toUIntStrict());
return;
}
if (name == SVGNames::kernelUnitLengthAttr) {
float x, y;
if (parseNumberOptionalNumber(value, x, y) && x > 0 && y > 0) {
m_kernelUnitLengthX.setValue(x);
m_kernelUnitLengthY.setValue(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.setValue(true);
else if (value == "false")
m_preserveAlpha.setValue(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.setValue(x);
m_orderY.setValue(y);
invalidate();
}
void SVGFEConvolveMatrixElement::setKernelUnitLength(float x, float y)
{
m_kernelUnitLengthX.setValue(x);
m_kernelUnitLengthY.setValue(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)
{
auto input1 = filterBuilder->getEffectById(in1());
if (!input1)
return nullptr;
int orderXValue = orderX();
int orderYValue = orderY();
if (!hasAttribute(SVGNames::orderAttr)) {
orderXValue = 3;
orderYValue = 3;
}
if (orderXValue < 1 || orderYValue < 1)
return nullptr;
auto& kernelMatrix = this->kernelMatrix();
int kernelMatrixSize = kernelMatrix.size();
if (orderXValue * orderYValue != kernelMatrixSize)
return nullptr;
int targetXValue = targetX();
int targetYValue = targetY();
if (hasAttribute(SVGNames::targetXAttr) && (targetXValue < 0 || targetXValue >= orderXValue))
return nullptr;
if (!hasAttribute(SVGNames::targetXAttr))
targetXValue = static_cast<int>(floorf(orderXValue / 2));
if (hasAttribute(SVGNames::targetYAttr) && (targetYValue < 0 || targetYValue >= orderYValue))
return nullptr;
if (!hasAttribute(SVGNames::targetYAttr))
targetYValue = static_cast<int>(floorf(orderYValue / 2));
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.at(i);
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 WTFMove(effect);
}
}