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SVGFilterElement.cpp
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1/*
2 Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
4 Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
5
6 This file is part of the KDE project
7
8 This library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Library General Public
10 License as published by the Free Software Foundation; either
11 version 2 of the License, or (at your option) any later version.
12
13 This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Library General Public License for more details.
17
18 You should have received a copy of the GNU Library General Public License
19 along with this library; see the file COPYING.LIB. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA.
22*/
23
24#include "config.h"
25
26#if ENABLE(SVG) && ENABLE(SVG_FILTERS)
27#include "SVGFilterElement.h"
28
29#include "Attr.h"
30#include "SVGResourceFilter.h"
31#include "SVGFilterPrimitiveStandardAttributes.h"
32#include "SVGLength.h"
33#include "SVGNames.h"
34#include "SVGUnitTypes.h"
35
36namespace WebCore {
37
38SVGFilterElement::SVGFilterElement(const QualifiedName& tagName, Document* doc)
39 : SVGStyledElement(tagName, doc)
40 , SVGURIReference()
41 , SVGLangSpace()
42 , SVGExternalResourcesRequired()
43 , m_filterUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
44 , m_primitiveUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
45 , m_x(this, LengthModeWidth)
46 , m_y(this, LengthModeHeight)
47 , m_width(this, LengthModeWidth)
48 , m_height(this, LengthModeHeight)
49 , m_filterResX(0)
50 , m_filterResY(0)
51{
52 // Spec: If the attribute is not specified, the effect is as if a value of "-10%" were specified.
53 setXBaseValue(SVGLength(this, LengthModeWidth, "-10%"));
54 setYBaseValue(SVGLength(this, LengthModeHeight, "-10%"));
55
56 // Spec: If the attribute is not specified, the effect is as if a value of "120%" were specified.
57 setWidthBaseValue(SVGLength(this, LengthModeWidth, "120%"));
58 setHeightBaseValue(SVGLength(this, LengthModeHeight, "120%"));
59}
60
61SVGFilterElement::~SVGFilterElement()
62{
63}
64
65ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, int, Enumeration, enumeration, FilterUnits, filterUnits, SVGNames::filterUnitsAttr, m_filterUnits)
66ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, int, Enumeration, enumeration, PrimitiveUnits, primitiveUnits, SVGNames::primitiveUnitsAttr, m_primitiveUnits)
67ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, SVGLength, Length, length, X, x, SVGNames::xAttr, m_x)
68ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, SVGLength, Length, length, Y, y, SVGNames::yAttr, m_y)
69ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, SVGLength, Length, length, Width, width, SVGNames::widthAttr, m_width)
70ANIMATED_PROPERTY_DEFINITIONS(SVGFilterElement, SVGLength, Length, length, Height, height, SVGNames::heightAttr, m_height)
71ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFilterElement, long, Integer, integer, FilterResX, filterResX, SVGNames::filterResAttr, "filterResX", m_filterResX)
72ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFilterElement, long, Integer, integer, FilterResY, filterResY, SVGNames::filterResAttr, "filterResY", m_filterResY)
73
74void SVGFilterElement::setFilterRes(unsigned long, unsigned long) const
75{
76}
77
78void SVGFilterElement::parseMappedAttribute(MappedAttribute* attr)
79{
80 const String& value = attr->value();
81 if (attr->name() == SVGNames::filterUnitsAttr) {
82 if (value == "userSpaceOnUse")
83 setFilterUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
84 else if (value == "objectBoundingBox")
85 setFilterUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
86 } else if (attr->name() == SVGNames::primitiveUnitsAttr) {
87 if (value == "userSpaceOnUse")
88 setPrimitiveUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
89 else if (value == "objectBoundingBox")
90 setPrimitiveUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
91 } else if (attr->name() == SVGNames::xAttr)
92 setXBaseValue(SVGLength(this, LengthModeWidth, value));
93 else if (attr->name() == SVGNames::yAttr)
94 setYBaseValue(SVGLength(this, LengthModeHeight, value));
95 else if (attr->name() == SVGNames::widthAttr)
96 setWidthBaseValue(SVGLength(this, LengthModeWidth, value));
97 else if (attr->name() == SVGNames::heightAttr)
98 setHeightBaseValue(SVGLength(this, LengthModeHeight, value));
99 else {
100 if (SVGURIReference::parseMappedAttribute(attr)) return;
101 if (SVGLangSpace::parseMappedAttribute(attr)) return;
102 if (SVGExternalResourcesRequired::parseMappedAttribute(attr)) return;
103
104 SVGStyledElement::parseMappedAttribute(attr);
105 }
106}
107
108SVGResource* SVGFilterElement::canvasResource()
109{
110 if (!attached())
111 return 0;
112
113 if (!m_filter)
114 m_filter = new SVGResourceFilter();
115
116 bool filterBBoxMode = filterUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
117 m_filter->setFilterBoundingBoxMode(filterBBoxMode);
118
119 float _x, _y, _width, _height;
120
121 if (filterBBoxMode) {
122 _x = x().valueAsPercentage();
123 _y = y().valueAsPercentage();
124 _width = width().valueAsPercentage();
125 _height = height().valueAsPercentage();
126 } else {
127 m_filter->setXBoundingBoxMode(x().unitType() == LengthTypePercentage);
128 m_filter->setYBoundingBoxMode(y().unitType() == LengthTypePercentage);
129
130 _x = x().value();
131 _y = y().value();
132 _width = width().value();
133 _height = height().value();
134 }
135
136 m_filter->setFilterRect(FloatRect(_x, _y, _width, _height));
137
138 bool primitiveBBoxMode = primitiveUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
139 m_filter->setEffectBoundingBoxMode(primitiveBBoxMode);
140
141 // TODO : use switch/case instead?
142 m_filter->clearEffects();
143 for (Node* n = firstChild(); n != 0; n = n->nextSibling()) {
144 SVGElement* element = 0;
145 if (n->isSVGElement())
146 element = static_cast<SVGElement*>(n);
147 if (element && element->isFilterEffect()) {
148 SVGFilterPrimitiveStandardAttributes* filterAttributes = static_cast<SVGFilterPrimitiveStandardAttributes*>(element);
149 SVGFilterEffect* filterEffect = filterAttributes->filterEffect(m_filter.get());
150 if (!filterEffect)
151 continue;
152
153 m_filter->addFilterEffect(filterEffect);
154 }
155 }
156
157 return m_filter.get();
158}
159
160}
161
162#endif // ENABLE(SVG)
163
164// vim:ts=4:noet
SVGFilterElement.h
SVGFilterPrimitiveStandardAttributes.h
SVGLength.h
SVGNames.h
SVGResourceFilter.h
SVGUnitTypes.h
WebCore
Definition: CSSHelper.h:7
WebCore::String
DOM::DOMString String
Definition: PlatformString.h:8
X
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