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 *
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 SVGFilterPrimitiveStandardAttributes_h
22#define SVGFilterPrimitiveStandardAttributes_h
23
24#include "core/rendering/svg/RenderSVGResource.h"
25#include "core/svg/SVGAnimatedLength.h"
26#include "core/svg/SVGAnimatedString.h"
27#include "core/svg/SVGElement.h"
28#include "wtf/PassRefPtr.h"
29#include "wtf/RefPtr.h"
30
31namespace blink {
32
33class Filter;
34class FilterEffect;
35class SVGFilterBuilder;
36
37class SVGFilterPrimitiveStandardAttributes : public SVGElement {
38    // No DEFINE_WRAPPERTYPEINFO() here because a) this class is never
39    // instantiated, and b) we don't generate corresponding V8T.h or V8T.cpp.
40    // The subclasses must write DEFINE_WRAPPERTYPEINFO().
41public:
42    void setStandardAttributes(FilterEffect*) const;
43
44    virtual PassRefPtr<FilterEffect> build(SVGFilterBuilder*, Filter* filter) = 0;
45    // Returns true, if the new value is different from the old one.
46    virtual bool setFilterEffectAttribute(FilterEffect*, const QualifiedName&);
47
48    // JS API
49    SVGAnimatedLength* x() const { return m_x.get(); }
50    SVGAnimatedLength* y() const { return m_y.get(); }
51    SVGAnimatedLength* width() const { return m_width.get(); }
52    SVGAnimatedLength* height() const { return m_height.get(); }
53    SVGAnimatedString* result() const { return m_result.get(); }
54
55protected:
56    SVGFilterPrimitiveStandardAttributes(const QualifiedName&, Document&);
57
58    bool isSupportedAttribute(const QualifiedName&);
59    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
60    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
61    virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
62
63    inline void invalidate()
64    {
65        if (RenderObject* primitiveRenderer = renderer())
66            RenderSVGResource::markForLayoutAndParentResourceInvalidation(primitiveRenderer);
67    }
68
69    void primitiveAttributeChanged(const QualifiedName&);
70
71private:
72    virtual bool isFilterEffect() const OVERRIDE FINAL { return true; }
73
74    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE FINAL;
75    virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE FINAL;
76
77    RefPtr<SVGAnimatedLength> m_x;
78    RefPtr<SVGAnimatedLength> m_y;
79    RefPtr<SVGAnimatedLength> m_width;
80    RefPtr<SVGAnimatedLength> m_height;
81    RefPtr<SVGAnimatedString> m_result;
82};
83
84void invalidateFilterPrimitiveParent(SVGElement*);
85
86} // namespace blink
87
88#endif // SVGFilterPrimitiveStandardAttributes_h
89