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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 blink {
     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     addToPropertyMap(m_tableValues);
     56     addToPropertyMap(m_slope);
     57     addToPropertyMap(m_intercept);
     58     addToPropertyMap(m_amplitude);
     59     addToPropertyMap(m_exponent);
     60     addToPropertyMap(m_offset);
     61     addToPropertyMap(m_type);
     62 }
     63 
     64 bool SVGComponentTransferFunctionElement::isSupportedAttribute(const QualifiedName& attrName)
     65 {
     66     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     67     if (supportedAttributes.isEmpty()) {
     68         supportedAttributes.add(SVGNames::typeAttr);
     69         supportedAttributes.add(SVGNames::tableValuesAttr);
     70         supportedAttributes.add(SVGNames::slopeAttr);
     71         supportedAttributes.add(SVGNames::interceptAttr);
     72         supportedAttributes.add(SVGNames::amplitudeAttr);
     73         supportedAttributes.add(SVGNames::exponentAttr);
     74         supportedAttributes.add(SVGNames::offsetAttr);
     75     }
     76     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
     77 }
     78 
     79 void SVGComponentTransferFunctionElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
     80 {
     81     parseAttributeNew(name, value);
     82 }
     83 
     84 void SVGComponentTransferFunctionElement::svgAttributeChanged(const QualifiedName& attrName)
     85 {
     86     if (!isSupportedAttribute(attrName)) {
     87         SVGElement::svgAttributeChanged(attrName);
     88         return;
     89     }
     90 
     91     SVGElement::InvalidationGuard invalidationGuard(this);
     92 
     93     invalidateFilterPrimitiveParent(this);
     94 }
     95 
     96 ComponentTransferFunction SVGComponentTransferFunctionElement::transferFunction() const
     97 {
     98     ComponentTransferFunction func;
     99     func.type = m_type->currentValue()->enumValue();
    100     func.slope = m_slope->currentValue()->value();
    101     func.intercept = m_intercept->currentValue()->value();
    102     func.amplitude = m_amplitude->currentValue()->value();
    103     func.exponent = m_exponent->currentValue()->value();
    104     func.offset = m_offset->currentValue()->value();
    105     func.tableValues = m_tableValues->currentValue()->toFloatVector();
    106     return func;
    107 }
    108 
    109 } // namespace blink
    110