124 lines
4.0 KiB
C++
124 lines
4.0 KiB
C++
/*
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* Copyright (C) Research In Motion Limited 2011. All rights reserved.
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* Copyright (C) 2018-2019 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "SVGFEDropShadowElement.h"
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#include "RenderStyle.h"
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#include "SVGFilterBuilder.h"
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#include "SVGNames.h"
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#include "SVGParserUtilities.h"
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#include "SVGRenderStyle.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEDropShadowElement);
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inline SVGFEDropShadowElement::SVGFEDropShadowElement(const QualifiedName& tagName, Document& document)
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: SVGFilterPrimitiveStandardAttributes(tagName, document)
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{
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ASSERT(hasTagName(SVGNames::feDropShadowTag));
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static std::once_flag onceFlag;
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std::call_once(onceFlag, [] {
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PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEDropShadowElement::m_in1>();
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PropertyRegistry::registerProperty<SVGNames::dxAttr, &SVGFEDropShadowElement::m_dx>();
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PropertyRegistry::registerProperty<SVGNames::dyAttr, &SVGFEDropShadowElement::m_dy>();
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PropertyRegistry::registerProperty<SVGNames::stdDeviationAttr, &SVGFEDropShadowElement::m_stdDeviationX, &SVGFEDropShadowElement::m_stdDeviationY>();
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});
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}
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Ref<SVGFEDropShadowElement> SVGFEDropShadowElement::create(const QualifiedName& tagName, Document& document)
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{
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return adoptRef(*new SVGFEDropShadowElement(tagName, document));
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}
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void SVGFEDropShadowElement::setStdDeviation(float x, float y)
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{
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m_stdDeviationX->setBaseValInternal(x);
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m_stdDeviationY->setBaseValInternal(y);
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invalidate();
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}
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void SVGFEDropShadowElement::parseAttribute(const QualifiedName& name, const AtomString& value)
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{
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if (name == SVGNames::stdDeviationAttr) {
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if (auto result = parseNumberOptionalNumber(value)) {
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m_stdDeviationX->setBaseValInternal(result->first);
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m_stdDeviationY->setBaseValInternal(result->second);
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}
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return;
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}
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if (name == SVGNames::inAttr) {
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m_in1->setBaseValInternal(value);
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return;
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}
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if (name == SVGNames::dxAttr) {
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m_dx->setBaseValInternal(value.toFloat());
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return;
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}
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if (name == SVGNames::dyAttr) {
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m_dy->setBaseValInternal(value.toFloat());
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return;
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}
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SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
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}
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void SVGFEDropShadowElement::svgAttributeChanged(const QualifiedName& attrName)
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{
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if (PropertyRegistry::isKnownAttribute(attrName)) {
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InstanceInvalidationGuard guard(*this);
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invalidate();
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return;
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}
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SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
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}
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RefPtr<FilterEffect> SVGFEDropShadowElement::build(SVGFilterBuilder* filterBuilder, Filter& filter) const
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{
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RenderObject* renderer = this->renderer();
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if (!renderer)
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return nullptr;
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if (stdDeviationX() < 0 || stdDeviationY() < 0)
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return nullptr;
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const SVGRenderStyle& svgStyle = renderer->style().svgStyle();
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Color color = renderer->style().colorByApplyingColorFilter(svgStyle.floodColor());
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float opacity = svgStyle.floodOpacity();
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auto input1 = filterBuilder->getEffectById(in1());
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if (!input1)
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return nullptr;
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auto effect = FEDropShadow::create(filter, stdDeviationX(), stdDeviationY(), dx(), dy(), color, opacity);
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effect->inputEffects() = { input1 };
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return effect;
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}
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}
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