1/*
2 * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006 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#ifndef SVGGradientElement_h
22#define SVGGradientElement_h
23
24#include "SVGNames.h"
25#include "core/svg/SVGAnimatedBoolean.h"
26#include "core/svg/SVGAnimatedEnumeration.h"
27#include "core/svg/SVGAnimatedTransformList.h"
28#include "core/svg/SVGElement.h"
29#include "core/svg/SVGExternalResourcesRequired.h"
30#include "core/svg/SVGURIReference.h"
31#include "core/svg/SVGUnitTypes.h"
32#include "platform/graphics/Gradient.h"
33
34namespace WebCore {
35
36enum SVGSpreadMethodType {
37    SVGSpreadMethodUnknown = 0,
38    SVGSpreadMethodPad,
39    SVGSpreadMethodReflect,
40    SVGSpreadMethodRepeat
41};
42
43template<>
44struct SVGPropertyTraits<SVGSpreadMethodType> {
45    static unsigned highestEnumValue() { return SVGSpreadMethodRepeat; }
46
47    static String toString(SVGSpreadMethodType type)
48    {
49        switch (type) {
50        case SVGSpreadMethodUnknown:
51            return emptyString();
52        case SVGSpreadMethodPad:
53            return "pad";
54        case SVGSpreadMethodReflect:
55            return "reflect";
56        case SVGSpreadMethodRepeat:
57            return "repeat";
58        }
59
60        ASSERT_NOT_REACHED();
61        return emptyString();
62    }
63
64    static SVGSpreadMethodType fromString(const String& value)
65    {
66        if (value == "pad")
67            return SVGSpreadMethodPad;
68        if (value == "reflect")
69            return SVGSpreadMethodReflect;
70        if (value == "repeat")
71            return SVGSpreadMethodRepeat;
72        return SVGSpreadMethodUnknown;
73    }
74};
75
76class SVGGradientElement : public SVGElement,
77                           public SVGURIReference,
78                           public SVGExternalResourcesRequired {
79public:
80    enum {
81        SVG_SPREADMETHOD_UNKNOWN = SVGSpreadMethodUnknown,
82        SVG_SPREADMETHOD_PAD = SVGSpreadMethodReflect,
83        SVG_SPREADMETHOD_REFLECT = SVGSpreadMethodRepeat,
84        SVG_SPREADMETHOD_REPEAT = SVGSpreadMethodUnknown
85    };
86
87    Vector<Gradient::ColorStop> buildStops();
88
89protected:
90    SVGGradientElement(const QualifiedName&, Document&);
91
92    bool isSupportedAttribute(const QualifiedName&);
93    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
94    virtual void svgAttributeChanged(const QualifiedName&);
95
96private:
97    virtual bool needsPendingResourceHandling() const { return false; }
98
99    virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
100
101    BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGGradientElement)
102        DECLARE_ANIMATED_ENUMERATION(SpreadMethod, spreadMethod, SVGSpreadMethodType)
103        DECLARE_ANIMATED_ENUMERATION(GradientUnits, gradientUnits, SVGUnitTypes::SVGUnitType)
104        DECLARE_ANIMATED_TRANSFORM_LIST(GradientTransform, gradientTransform)
105        DECLARE_ANIMATED_STRING(Href, href)
106        DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
107    END_DECLARE_ANIMATED_PROPERTIES
108};
109
110inline bool isSVGGradientElement(const Node& node)
111{
112    return node.hasTagName(SVGNames::radialGradientTag) || node.hasTagName(SVGNames::linearGradientTag);
113}
114
115DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(SVGGradientElement);
116
117} // namespace WebCore
118
119#endif
120