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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/svg/SVGFEBlendElement.h"
#include "core/SVGNames.h"
#include "platform/graphics/filters/FEBlend.h"
#include "platform/graphics/filters/FilterEffect.h"
#include "core/svg/graphics/filters/SVGFilterBuilder.h"
namespace blink {
static WebBlendMode toWebBlendMode(SVGFEBlendElement::Mode mode)
{
#define MAP_BLEND_MODE(MODENAME) \
case SVGFEBlendElement::Mode##MODENAME: \
return WebBlendMode##MODENAME
switch (mode) {
MAP_BLEND_MODE(Normal);
MAP_BLEND_MODE(Multiply);
MAP_BLEND_MODE(Screen);
MAP_BLEND_MODE(Darken);
MAP_BLEND_MODE(Lighten);
MAP_BLEND_MODE(Overlay);
MAP_BLEND_MODE(ColorDodge);
MAP_BLEND_MODE(ColorBurn);
MAP_BLEND_MODE(HardLight);
MAP_BLEND_MODE(SoftLight);
MAP_BLEND_MODE(Difference);
MAP_BLEND_MODE(Exclusion);
MAP_BLEND_MODE(Hue);
MAP_BLEND_MODE(Saturation);
MAP_BLEND_MODE(Color);
MAP_BLEND_MODE(Luminosity);
default:
ASSERT_NOT_REACHED();
return WebBlendModeNormal;
}
#undef MAP_BLEND_MODE
}
template<> const SVGEnumerationStringEntries& getStaticStringEntries<SVGFEBlendElement::Mode>()
{
DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ());
if (entries.isEmpty()) {
entries.append(std::make_pair(SVGFEBlendElement::ModeNormal, "normal"));
entries.append(std::make_pair(SVGFEBlendElement::ModeMultiply, "multiply"));
entries.append(std::make_pair(SVGFEBlendElement::ModeScreen, "screen"));
entries.append(std::make_pair(SVGFEBlendElement::ModeDarken, "darken"));
entries.append(std::make_pair(SVGFEBlendElement::ModeLighten, "lighten"));
entries.append(std::make_pair(SVGFEBlendElement::ModeOverlay, "overlay"));
entries.append(std::make_pair(SVGFEBlendElement::ModeColorDodge, "color-dodge"));
entries.append(std::make_pair(SVGFEBlendElement::ModeColorBurn, "color-burn"));
entries.append(std::make_pair(SVGFEBlendElement::ModeHardLight, "hard-light"));
entries.append(std::make_pair(SVGFEBlendElement::ModeSoftLight, "soft-light"));
entries.append(std::make_pair(SVGFEBlendElement::ModeDifference, "difference"));
entries.append(std::make_pair(SVGFEBlendElement::ModeExclusion, "exclusion"));
entries.append(std::make_pair(SVGFEBlendElement::ModeHue, "hue"));
entries.append(std::make_pair(SVGFEBlendElement::ModeSaturation, "saturation"));
entries.append(std::make_pair(SVGFEBlendElement::ModeColor, "color"));
entries.append(std::make_pair(SVGFEBlendElement::ModeLuminosity, "luminosity"));
}
return entries;
}
template<> unsigned short getMaxExposedEnumValue<SVGFEBlendElement::Mode>()
{
return SVGFEBlendElement::ModeLighten;
}
inline SVGFEBlendElement::SVGFEBlendElement(Document& document)
: SVGFilterPrimitiveStandardAttributes(SVGNames::feBlendTag, document)
, m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create()))
, m_in2(SVGAnimatedString::create(this, SVGNames::in2Attr, SVGString::create()))
, m_mode(SVGAnimatedEnumeration<Mode>::create(this, SVGNames::modeAttr, SVGFEBlendElement::ModeNormal))
{
addToPropertyMap(m_in1);
addToPropertyMap(m_in2);
addToPropertyMap(m_mode);
}
void SVGFEBlendElement::trace(Visitor* visitor)
{
visitor->trace(m_in1);
visitor->trace(m_in2);
visitor->trace(m_mode);
SVGFilterPrimitiveStandardAttributes::trace(visitor);
}
DEFINE_NODE_FACTORY(SVGFEBlendElement)
bool SVGFEBlendElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty()) {
supportedAttributes.add(SVGNames::modeAttr);
supportedAttributes.add(SVGNames::inAttr);
supportedAttributes.add(SVGNames::in2Attr);
}
return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
}
void SVGFEBlendElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
parseAttributeNew(name, value);
}
bool SVGFEBlendElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
{
FEBlend* blend = static_cast<FEBlend*>(effect);
if (attrName == SVGNames::modeAttr)
return blend->setBlendMode(toWebBlendMode(m_mode->currentValue()->enumValue()));
ASSERT_NOT_REACHED();
return false;
}
void SVGFEBlendElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
return;
}
SVGElement::InvalidationGuard invalidationGuard(this);
if (attrName == SVGNames::modeAttr) {
primitiveAttributeChanged(attrName);
return;
}
if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
invalidate();
return;
}
ASSERT_NOT_REACHED();
}
PassRefPtrWillBeRawPtr<FilterEffect> SVGFEBlendElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
{
FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
FilterEffect* input2 = filterBuilder->getEffectById(AtomicString(m_in2->currentValue()->value()));
if (!input1 || !input2)
return nullptr;
RefPtrWillBeRawPtr<FilterEffect> effect = FEBlend::create(filter, toWebBlendMode(m_mode->currentValue()->enumValue()));
FilterEffectVector& inputEffects = effect->inputEffects();
inputEffects.reserveCapacity(2);
inputEffects.append(input1);
inputEffects.append(input2);
return effect.release();
}
}
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