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      1 /*
      2  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis (at) kde.org>
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #include "config.h"
     22 
     23 #include "core/svg/SVGFEColorMatrixElement.h"
     24 
     25 #include "SVGNames.h"
     26 #include "core/platform/graphics/filters/FilterEffect.h"
     27 #include "core/svg/SVGElementInstance.h"
     28 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
     29 
     30 namespace WebCore {
     31 
     32 // Animated property definitions
     33 DEFINE_ANIMATED_STRING(SVGFEColorMatrixElement, SVGNames::inAttr, In1, in1)
     34 DEFINE_ANIMATED_ENUMERATION(SVGFEColorMatrixElement, SVGNames::typeAttr, Type, type, ColorMatrixType)
     35 DEFINE_ANIMATED_NUMBER_LIST(SVGFEColorMatrixElement, SVGNames::valuesAttr, Values, values)
     36 
     37 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFEColorMatrixElement)
     38     REGISTER_LOCAL_ANIMATED_PROPERTY(in1)
     39     REGISTER_LOCAL_ANIMATED_PROPERTY(type)
     40     REGISTER_LOCAL_ANIMATED_PROPERTY(values)
     41     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGFilterPrimitiveStandardAttributes)
     42 END_REGISTER_ANIMATED_PROPERTIES
     43 
     44 inline SVGFEColorMatrixElement::SVGFEColorMatrixElement(const QualifiedName& tagName, Document* document)
     45     : SVGFilterPrimitiveStandardAttributes(tagName, document)
     46     , m_type(FECOLORMATRIX_TYPE_MATRIX)
     47 {
     48     ASSERT(hasTagName(SVGNames::feColorMatrixTag));
     49     ScriptWrappable::init(this);
     50     registerAnimatedPropertiesForSVGFEColorMatrixElement();
     51 }
     52 
     53 PassRefPtr<SVGFEColorMatrixElement> SVGFEColorMatrixElement::create(const QualifiedName& tagName, Document* document)
     54 {
     55     return adoptRef(new SVGFEColorMatrixElement(tagName, document));
     56 }
     57 
     58 bool SVGFEColorMatrixElement::isSupportedAttribute(const QualifiedName& attrName)
     59 {
     60     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     61     if (supportedAttributes.isEmpty()) {
     62         supportedAttributes.add(SVGNames::typeAttr);
     63         supportedAttributes.add(SVGNames::valuesAttr);
     64         supportedAttributes.add(SVGNames::inAttr);
     65     }
     66     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
     67 }
     68 
     69 void SVGFEColorMatrixElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
     70 {
     71     if (!isSupportedAttribute(name)) {
     72         SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
     73         return;
     74     }
     75 
     76     if (name == SVGNames::typeAttr) {
     77         ColorMatrixType propertyValue = SVGPropertyTraits<ColorMatrixType>::fromString(value);
     78         if (propertyValue > 0)
     79             setTypeBaseValue(propertyValue);
     80         return;
     81     }
     82 
     83     if (name == SVGNames::inAttr) {
     84         setIn1BaseValue(value);
     85         return;
     86     }
     87 
     88     if (name == SVGNames::valuesAttr) {
     89         SVGNumberList newList;
     90         newList.parse(value);
     91         detachAnimatedValuesListWrappers(newList.size());
     92         setValuesBaseValue(newList);
     93         return;
     94     }
     95 
     96     ASSERT_NOT_REACHED();
     97 }
     98 
     99 bool SVGFEColorMatrixElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
    100 {
    101     FEColorMatrix* colorMatrix = static_cast<FEColorMatrix*>(effect);
    102     if (attrName == SVGNames::typeAttr)
    103         return colorMatrix->setType(typeCurrentValue());
    104     if (attrName == SVGNames::valuesAttr)
    105         return colorMatrix->setValues(valuesCurrentValue().toFloatVector());
    106 
    107     ASSERT_NOT_REACHED();
    108     return false;
    109 }
    110 
    111 void SVGFEColorMatrixElement::svgAttributeChanged(const QualifiedName& attrName)
    112 {
    113     if (!isSupportedAttribute(attrName)) {
    114         SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
    115         return;
    116     }
    117 
    118     SVGElementInstance::InvalidationGuard invalidationGuard(this);
    119 
    120     if (attrName == SVGNames::typeAttr || attrName == SVGNames::valuesAttr) {
    121         primitiveAttributeChanged(attrName);
    122         return;
    123     }
    124 
    125     if (attrName == SVGNames::inAttr) {
    126         invalidate();
    127         return;
    128     }
    129 
    130     ASSERT_NOT_REACHED();
    131 }
    132 
    133 PassRefPtr<FilterEffect> SVGFEColorMatrixElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
    134 {
    135     FilterEffect* input1 = filterBuilder->getEffectById(in1CurrentValue());
    136 
    137     if (!input1)
    138         return 0;
    139 
    140     Vector<float> filterValues;
    141     ColorMatrixType filterType = typeCurrentValue();
    142 
    143     // Use defaults if values is empty (SVG 1.1 15.10).
    144     if (!hasAttribute(SVGNames::valuesAttr)) {
    145         switch (filterType) {
    146         case FECOLORMATRIX_TYPE_MATRIX:
    147             for (size_t i = 0; i < 20; i++)
    148                 filterValues.append((i % 6) ? 0 : 1);
    149             break;
    150         case FECOLORMATRIX_TYPE_HUEROTATE:
    151             filterValues.append(0);
    152             break;
    153         case FECOLORMATRIX_TYPE_SATURATE:
    154             filterValues.append(1);
    155             break;
    156         default:
    157             break;
    158         }
    159     } else {
    160         SVGNumberList& values = valuesCurrentValue();
    161         unsigned size = values.size();
    162 
    163         if ((filterType == FECOLORMATRIX_TYPE_MATRIX && size != 20)
    164             || (filterType == FECOLORMATRIX_TYPE_HUEROTATE && size != 1)
    165             || (filterType == FECOLORMATRIX_TYPE_SATURATE && size != 1))
    166             return 0;
    167 
    168         filterValues = values.toFloatVector();
    169     }
    170 
    171     RefPtr<FilterEffect> effect = FEColorMatrix::create(filter, filterType, filterValues);
    172     effect->inputEffects().append(input1);
    173     return effect.release();
    174 }
    175 
    176 } // namespace WebCore
    177