2 * Copyright (C) Research In Motion Limited 2011. All rights reserved.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
22 #include "core/svg/SVGFEDropShadowElement.h"
25 #include "core/rendering/style/RenderStyle.h"
26 #include "core/rendering/style/SVGRenderStyle.h"
27 #include "core/svg/SVGElementInstance.h"
28 #include "core/svg/SVGParserUtilities.h"
29 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
33 inline SVGFEDropShadowElement::SVGFEDropShadowElement(Document& document)
34 : SVGFilterPrimitiveStandardAttributes(SVGNames::feDropShadowTag, document)
35 , m_dx(SVGAnimatedNumber::create(this, SVGNames::dxAttr, SVGNumber::create(2)))
36 , m_dy(SVGAnimatedNumber::create(this, SVGNames::dyAttr, SVGNumber::create(2)))
37 , m_stdDeviation(SVGAnimatedNumberOptionalNumber::create(this, SVGNames::stdDeviationAttr, 2, 2))
38 , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create()))
40 ScriptWrappable::init(this);
42 addToPropertyMap(m_dx);
43 addToPropertyMap(m_dy);
44 addToPropertyMap(m_stdDeviation);
45 addToPropertyMap(m_in1);
48 PassRefPtr<SVGFEDropShadowElement> SVGFEDropShadowElement::create(Document& document)
50 return adoptRef(new SVGFEDropShadowElement(document));
53 void SVGFEDropShadowElement::setStdDeviation(float x, float y)
55 stdDeviationX()->baseValue()->setValue(x);
56 stdDeviationY()->baseValue()->setValue(y);
60 bool SVGFEDropShadowElement::isSupportedAttribute(const QualifiedName& attrName)
62 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
63 if (supportedAttributes.isEmpty()) {
64 supportedAttributes.add(SVGNames::inAttr);
65 supportedAttributes.add(SVGNames::dxAttr);
66 supportedAttributes.add(SVGNames::dyAttr);
67 supportedAttributes.add(SVGNames::stdDeviationAttr);
69 return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
72 void SVGFEDropShadowElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
74 if (!isSupportedAttribute(name)) {
75 SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
79 SVGParsingError parseError = NoError;
81 if (name == SVGNames::inAttr)
82 m_in1->setBaseValueAsString(value, parseError);
83 else if (name == SVGNames::dxAttr)
84 m_dx->setBaseValueAsString(value, parseError);
85 else if (name == SVGNames::dyAttr)
86 m_dy->setBaseValueAsString(value, parseError);
87 else if (name == SVGNames::stdDeviationAttr)
88 m_stdDeviation->setBaseValueAsString(value, parseError);
92 reportAttributeParsingError(parseError, name, value);
95 void SVGFEDropShadowElement::svgAttributeChanged(const QualifiedName& attrName)
97 if (!isSupportedAttribute(attrName)) {
98 SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
102 SVGElementInstance::InvalidationGuard invalidationGuard(this);
104 if (attrName == SVGNames::inAttr
105 || attrName == SVGNames::stdDeviationAttr
106 || attrName == SVGNames::dxAttr
107 || attrName == SVGNames::dyAttr) {
112 ASSERT_NOT_REACHED();
115 PassRefPtr<FilterEffect> SVGFEDropShadowElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
117 RenderObject* renderer = this->renderer();
121 if (stdDeviationX()->currentValue()->value() < 0 || stdDeviationY()->currentValue()->value() < 0)
124 ASSERT(renderer->style());
125 const SVGRenderStyle* svgStyle = renderer->style()->svgStyle();
127 Color color = svgStyle->floodColor();
128 float opacity = svgStyle->floodOpacity();
130 FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
134 RefPtr<FilterEffect> effect = FEDropShadow::create(filter, stdDeviationX()->currentValue()->value(), stdDeviationY()->currentValue()->value(), m_dx->currentValue()->value(), m_dy->currentValue()->value(), color, opacity);
135 effect->inputEffects().append(input1);
136 return effect.release();