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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/SVGComponentTransferFunctionElement.h"
     24 
     25 #include "core/SVGNames.h"
     26 #include "core/dom/Attribute.h"
     27 #include "core/svg/SVGFEComponentTransferElement.h"
     28 #include "core/svg/SVGNumberList.h"
     29 
     30 namespace WebCore {
     31 
     32 template<> const SVGEnumerationStringEntries& getStaticStringEntries<ComponentTransferType>()
     33 {
     34     DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ());
     35     if (entries.isEmpty()) {
     36         entries.append(std::make_pair(FECOMPONENTTRANSFER_TYPE_IDENTITY, "identity"));
     37         entries.append(std::make_pair(FECOMPONENTTRANSFER_TYPE_TABLE, "table"));
     38         entries.append(std::make_pair(FECOMPONENTTRANSFER_TYPE_DISCRETE, "discrete"));
     39         entries.append(std::make_pair(FECOMPONENTTRANSFER_TYPE_LINEAR, "linear"));
     40         entries.append(std::make_pair(FECOMPONENTTRANSFER_TYPE_GAMMA, "gamma"));
     41     }
     42     return entries;
     43 }
     44 
     45 SVGComponentTransferFunctionElement::SVGComponentTransferFunctionElement(const QualifiedName& tagName, Document& document)
     46     : SVGElement(tagName, document)
     47     , m_tableValues(SVGAnimatedNumberList::create(this, SVGNames::tableValuesAttr, SVGNumberList::create()))
     48     , m_slope(SVGAnimatedNumber::create(this, SVGNames::slopeAttr, SVGNumber::create(1)))
     49     , m_intercept(SVGAnimatedNumber::create(this, SVGNames::interceptAttr, SVGNumber::create()))
     50     , m_amplitude(SVGAnimatedNumber::create(this, SVGNames::amplitudeAttr, SVGNumber::create(1)))
     51     , m_exponent(SVGAnimatedNumber::create(this, SVGNames::exponentAttr, SVGNumber::create(1)))
     52     , m_offset(SVGAnimatedNumber::create(this, SVGNames::offsetAttr, SVGNumber::create()))
     53     , m_type(SVGAnimatedEnumeration<ComponentTransferType>::create(this, SVGNames::typeAttr, FECOMPONENTTRANSFER_TYPE_IDENTITY))
     54 {
     55     ScriptWrappable::init(this);
     56 
     57     addToPropertyMap(m_tableValues);
     58     addToPropertyMap(m_slope);
     59     addToPropertyMap(m_intercept);
     60     addToPropertyMap(m_amplitude);
     61     addToPropertyMap(m_exponent);
     62     addToPropertyMap(m_offset);
     63     addToPropertyMap(m_type);
     64 }
     65 
     66 bool SVGComponentTransferFunctionElement::isSupportedAttribute(const QualifiedName& attrName)
     67 {
     68     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     69     if (supportedAttributes.isEmpty()) {
     70         supportedAttributes.add(SVGNames::typeAttr);
     71         supportedAttributes.add(SVGNames::tableValuesAttr);
     72         supportedAttributes.add(SVGNames::slopeAttr);
     73         supportedAttributes.add(SVGNames::interceptAttr);
     74         supportedAttributes.add(SVGNames::amplitudeAttr);
     75         supportedAttributes.add(SVGNames::exponentAttr);
     76         supportedAttributes.add(SVGNames::offsetAttr);
     77     }
     78     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
     79 }
     80 
     81 void SVGComponentTransferFunctionElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
     82 {
     83     if (!isSupportedAttribute(name)) {
     84         SVGElement::parseAttribute(name, value);
     85         return;
     86     }
     87 
     88     SVGParsingError parseError = NoError;
     89 
     90     if (name == SVGNames::tableValuesAttr)
     91         m_tableValues->setBaseValueAsString(value, parseError);
     92     else if (name == SVGNames::typeAttr)
     93         m_type->setBaseValueAsString(value, parseError);
     94     else if (name == SVGNames::slopeAttr)
     95         m_slope->setBaseValueAsString(value, parseError);
     96     else if (name == SVGNames::interceptAttr)
     97         m_intercept->setBaseValueAsString(value, parseError);
     98     else if (name == SVGNames::amplitudeAttr)
     99         m_amplitude->setBaseValueAsString(value, parseError);
    100     else if (name == SVGNames::exponentAttr)
    101         m_exponent->setBaseValueAsString(value, parseError);
    102     else if (name == SVGNames::offsetAttr)
    103         m_offset->setBaseValueAsString(value, parseError);
    104 
    105     reportAttributeParsingError(parseError, name, value);
    106 }
    107 
    108 void SVGComponentTransferFunctionElement::svgAttributeChanged(const QualifiedName& attrName)
    109 {
    110     if (!isSupportedAttribute(attrName)) {
    111         SVGElement::svgAttributeChanged(attrName);
    112         return;
    113     }
    114 
    115     SVGElement::InvalidationGuard invalidationGuard(this);
    116 
    117     invalidateFilterPrimitiveParent(this);
    118 }
    119 
    120 ComponentTransferFunction SVGComponentTransferFunctionElement::transferFunction() const
    121 {
    122     ComponentTransferFunction func;
    123     func.type = m_type->currentValue()->enumValue();
    124     func.slope = m_slope->currentValue()->value();
    125     func.intercept = m_intercept->currentValue()->value();
    126     func.amplitude = m_amplitude->currentValue()->value();
    127     func.exponent = m_exponent->currentValue()->value();
    128     func.offset = m_offset->currentValue()->value();
    129     func.tableValues = m_tableValues->currentValue()->toFloatVector();
    130     return func;
    131 }
    132 
    133 }
    134