2 * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
22 #include "core/svg/SVGFEConvolveMatrixElement.h"
25 #include "platform/graphics/filters/FilterEffect.h"
26 #include "core/svg/SVGElementInstance.h"
27 #include "core/svg/SVGParserUtilities.h"
28 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
29 #include "platform/geometry/FloatPoint.h"
30 #include "platform/geometry/IntPoint.h"
31 #include "platform/geometry/IntSize.h"
35 // Animated property definitions
36 DEFINE_ANIMATED_ENUMERATION(SVGFEConvolveMatrixElement, SVGNames::edgeModeAttr, EdgeMode, edgeMode, EdgeModeType)
38 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFEConvolveMatrixElement)
39 REGISTER_LOCAL_ANIMATED_PROPERTY(edgeMode)
40 REGISTER_PARENT_ANIMATED_PROPERTIES(SVGFilterPrimitiveStandardAttributes)
41 END_REGISTER_ANIMATED_PROPERTIES
43 inline SVGFEConvolveMatrixElement::SVGFEConvolveMatrixElement(Document& document)
44 : SVGFilterPrimitiveStandardAttributes(SVGNames::feConvolveMatrixTag, document)
45 , m_bias(SVGAnimatedNumber::create(this, SVGNames::biasAttr, SVGNumber::create()))
46 , m_divisor(SVGAnimatedNumber::create(this, SVGNames::divisorAttr, SVGNumber::create()))
47 , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create()))
48 , m_kernelMatrix(SVGAnimatedNumberList::create(this, SVGNames::kernelMatrixAttr, SVGNumberList::create()))
49 , m_kernelUnitLength(SVGAnimatedNumberOptionalNumber::create(this, SVGNames::kernelUnitLengthAttr))
50 , m_order(SVGAnimatedIntegerOptionalInteger::create(this, SVGNames::orderAttr))
51 , m_preserveAlpha(SVGAnimatedBoolean::create(this, SVGNames::preserveAlphaAttr, SVGBoolean::create()))
52 , m_targetX(SVGAnimatedInteger::create(this, SVGNames::targetXAttr, SVGInteger::create()))
53 , m_targetY(SVGAnimatedInteger::create(this, SVGNames::targetYAttr, SVGInteger::create()))
54 , m_edgeMode(EDGEMODE_DUPLICATE)
56 ScriptWrappable::init(this);
58 addToPropertyMap(m_preserveAlpha);
59 addToPropertyMap(m_divisor);
60 addToPropertyMap(m_bias);
61 addToPropertyMap(m_kernelUnitLength);
62 addToPropertyMap(m_kernelMatrix);
63 addToPropertyMap(m_in1);
64 addToPropertyMap(m_order);
65 addToPropertyMap(m_targetX);
66 addToPropertyMap(m_targetY);
67 registerAnimatedPropertiesForSVGFEConvolveMatrixElement();
70 PassRefPtr<SVGFEConvolveMatrixElement> SVGFEConvolveMatrixElement::create(Document& document)
72 return adoptRef(new SVGFEConvolveMatrixElement(document));
75 bool SVGFEConvolveMatrixElement::isSupportedAttribute(const QualifiedName& attrName)
77 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
78 if (supportedAttributes.isEmpty()) {
79 supportedAttributes.add(SVGNames::inAttr);
80 supportedAttributes.add(SVGNames::orderAttr);
81 supportedAttributes.add(SVGNames::kernelMatrixAttr);
82 supportedAttributes.add(SVGNames::edgeModeAttr);
83 supportedAttributes.add(SVGNames::divisorAttr);
84 supportedAttributes.add(SVGNames::biasAttr);
85 supportedAttributes.add(SVGNames::targetXAttr);
86 supportedAttributes.add(SVGNames::targetYAttr);
87 supportedAttributes.add(SVGNames::kernelUnitLengthAttr);
88 supportedAttributes.add(SVGNames::preserveAlphaAttr);
90 return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
93 void SVGFEConvolveMatrixElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
95 if (!isSupportedAttribute(name)) {
96 SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
100 if (name == SVGNames::edgeModeAttr) {
101 EdgeModeType propertyValue = SVGPropertyTraits<EdgeModeType>::fromString(value);
102 if (propertyValue > 0)
103 setEdgeModeBaseValue(propertyValue);
105 document().accessSVGExtensions()->reportWarning(
106 "feConvolveMatrix: problem parsing edgeMode=\"" + value
107 + "\". Filtered element will not be displayed.");
111 SVGParsingError parseError = NoError;
113 if (name == SVGNames::inAttr)
114 m_in1->setBaseValueAsString(value, parseError);
115 else if (name == SVGNames::divisorAttr)
116 m_divisor->setBaseValueAsString(value, parseError);
117 else if (name == SVGNames::biasAttr)
118 m_bias->setBaseValueAsString(value, parseError);
119 else if (name == SVGNames::kernelUnitLengthAttr)
120 m_kernelUnitLength->setBaseValueAsString(value, parseError);
121 else if (name == SVGNames::kernelMatrixAttr)
122 m_kernelMatrix->setBaseValueAsString(value, parseError);
123 else if (name == SVGNames::preserveAlphaAttr)
124 m_preserveAlpha->setBaseValueAsString(value, parseError);
125 else if (name == SVGNames::targetXAttr)
126 m_targetX->setBaseValueAsString(value, parseError);
127 else if (name == SVGNames::targetYAttr)
128 m_targetY->setBaseValueAsString(value, parseError);
129 else if (name == SVGNames::orderAttr) {
130 m_order->setBaseValueAsString(value, parseError);
131 if (parseError == NoError && (orderX()->baseValue()->value() < 1 || orderY()->baseValue()->value() < 1)) {
132 document().accessSVGExtensions()->reportWarning(
133 "feConvolveMatrix: problem parsing order=\"" + value
134 + "\". Filtered element will not be displayed.");
137 ASSERT_NOT_REACHED();
139 reportAttributeParsingError(parseError, name, value);
142 bool SVGFEConvolveMatrixElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
144 FEConvolveMatrix* convolveMatrix = static_cast<FEConvolveMatrix*>(effect);
145 if (attrName == SVGNames::edgeModeAttr)
146 return convolveMatrix->setEdgeMode(edgeModeCurrentValue());
147 if (attrName == SVGNames::divisorAttr)
148 return convolveMatrix->setDivisor(m_divisor->currentValue()->value());
149 if (attrName == SVGNames::biasAttr)
150 return convolveMatrix->setBias(m_bias->currentValue()->value());
151 if (attrName == SVGNames::targetXAttr)
152 return convolveMatrix->setTargetOffset(IntPoint(m_targetX->currentValue()->value(), m_targetY->currentValue()->value()));
153 if (attrName == SVGNames::targetYAttr)
154 return convolveMatrix->setTargetOffset(IntPoint(m_targetX->currentValue()->value(), m_targetY->currentValue()->value()));
155 if (attrName == SVGNames::kernelUnitLengthAttr)
156 return convolveMatrix->setKernelUnitLength(FloatPoint(kernelUnitLengthX()->currentValue()->value(), kernelUnitLengthY()->currentValue()->value()));
157 if (attrName == SVGNames::preserveAlphaAttr)
158 return convolveMatrix->setPreserveAlpha(m_preserveAlpha->currentValue()->value());
160 ASSERT_NOT_REACHED();
164 void SVGFEConvolveMatrixElement::svgAttributeChanged(const QualifiedName& attrName)
166 if (!isSupportedAttribute(attrName)) {
167 SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
171 SVGElementInstance::InvalidationGuard invalidationGuard(this);
173 if (attrName == SVGNames::edgeModeAttr
174 || attrName == SVGNames::divisorAttr
175 || attrName == SVGNames::biasAttr
176 || attrName == SVGNames::targetXAttr
177 || attrName == SVGNames::targetYAttr
178 || attrName == SVGNames::kernelUnitLengthAttr
179 || attrName == SVGNames::preserveAlphaAttr) {
180 primitiveAttributeChanged(attrName);
184 if (attrName == SVGNames::inAttr
185 || attrName == SVGNames::orderAttr
186 || attrName == SVGNames::kernelMatrixAttr) {
191 ASSERT_NOT_REACHED();
194 PassRefPtr<FilterEffect> SVGFEConvolveMatrixElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
196 FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
201 int orderXValue = orderX()->currentValue()->value();
202 int orderYValue = orderY()->currentValue()->value();
203 if (!hasAttribute(SVGNames::orderAttr)) {
207 // Spec says order must be > 0. Bail if it is not.
208 if (orderXValue < 1 || orderYValue < 1)
210 RefPtr<SVGNumberList> kernelMatrix = this->m_kernelMatrix->currentValue();
211 size_t kernelMatrixSize = kernelMatrix->numberOfItems();
212 // The spec says this is a requirement, and should bail out if fails
213 if (orderXValue * orderYValue != static_cast<int>(kernelMatrixSize))
216 int targetXValue = m_targetX->currentValue()->value();
217 int targetYValue = m_targetY->currentValue()->value();
218 if (hasAttribute(SVGNames::targetXAttr) && (targetXValue < 0 || targetXValue >= orderXValue))
220 // The spec says the default value is: targetX = floor ( orderX / 2 ))
221 if (!hasAttribute(SVGNames::targetXAttr))
222 targetXValue = static_cast<int>(floorf(orderXValue / 2));
223 if (hasAttribute(SVGNames::targetYAttr) && (targetYValue < 0 || targetYValue >= orderYValue))
225 // The spec says the default value is: targetY = floor ( orderY / 2 ))
226 if (!hasAttribute(SVGNames::targetYAttr))
227 targetYValue = static_cast<int>(floorf(orderYValue / 2));
229 // Spec says default kernelUnitLength is 1.0, and a specified length cannot be 0.
230 // FIXME: Why is this cast from float -> int -> float?
231 int kernelUnitLengthXValue = kernelUnitLengthX()->currentValue()->value();
232 int kernelUnitLengthYValue = kernelUnitLengthY()->currentValue()->value();
233 if (!hasAttribute(SVGNames::kernelUnitLengthAttr)) {
234 kernelUnitLengthXValue = 1;
235 kernelUnitLengthYValue = 1;
237 if (kernelUnitLengthXValue <= 0 || kernelUnitLengthYValue <= 0)
240 float divisorValue = m_divisor->currentValue()->value();
241 if (hasAttribute(SVGNames::divisorAttr) && !divisorValue)
243 if (!hasAttribute(SVGNames::divisorAttr)) {
244 for (size_t i = 0; i < kernelMatrixSize; ++i)
245 divisorValue += kernelMatrix->at(i)->value();
250 RefPtr<FilterEffect> effect = FEConvolveMatrix::create(filter,
251 IntSize(orderXValue, orderYValue), divisorValue,
252 m_bias->currentValue()->value(), IntPoint(targetXValue, targetYValue), edgeModeCurrentValue(),
253 FloatPoint(kernelUnitLengthXValue, kernelUnitLengthYValue), m_preserveAlpha->currentValue()->value(), m_kernelMatrix->currentValue()->toFloatVector());
254 effect->inputEffects().append(input1);
255 return effect.release();
258 } // namespace WebCore