1/*
2    Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3                  2004, 2005 Rob Buis <buis@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#if ENABLE(SVG) && ENABLE(FILTERS)
24#include "SVGFEOffsetElement.h"
25
26#include "Attr.h"
27#include "MappedAttribute.h"
28#include "SVGResourceFilter.h"
29
30namespace WebCore {
31
32SVGFEOffsetElement::SVGFEOffsetElement(const QualifiedName& tagName, Document* doc)
33    : SVGFilterPrimitiveStandardAttributes(tagName, doc)
34{
35}
36
37SVGFEOffsetElement::~SVGFEOffsetElement()
38{
39}
40
41void SVGFEOffsetElement::parseMappedAttribute(MappedAttribute* attr)
42{
43    const String& value = attr->value();
44    if (attr->name() == SVGNames::dxAttr)
45        setDxBaseValue(value.toFloat());
46    else if (attr->name() == SVGNames::dyAttr)
47        setDyBaseValue(value.toFloat());
48    else if (attr->name() == SVGNames::inAttr)
49        setIn1BaseValue(value);
50    else
51        SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
52}
53
54void SVGFEOffsetElement::synchronizeProperty(const QualifiedName& attrName)
55{
56    SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);
57
58    if (attrName == anyQName()) {
59        synchronizeDx();
60        synchronizeDy();
61        synchronizeIn1();
62        return;
63    }
64
65    if (attrName == SVGNames::dxAttr)
66        synchronizeDx();
67    else if (attrName == SVGNames::dyAttr)
68        synchronizeDy();
69    else if (attrName == SVGNames::inAttr)
70        synchronizeIn1();
71}
72
73bool SVGFEOffsetElement::build(SVGResourceFilter* filterResource)
74{
75    FilterEffect* input1 = filterResource->builder()->getEffectById(in1());
76
77    if (!input1)
78        return false;
79
80    RefPtr<FilterEffect> effect = FEOffset::create(input1, dx(), dy());
81    filterResource->addFilterEffect(this, effect.release());
82
83    return true;
84}
85
86}
87
88#endif // ENABLE(SVG)
89