1/*
2 * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2014 Google, Inc.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#ifndef SVGGraphicsElement_h
23#define SVGGraphicsElement_h
24
25#include "core/svg/SVGAnimatedTransformList.h"
26#include "core/svg/SVGElement.h"
27#include "core/svg/SVGRectTearOff.h"
28#include "core/svg/SVGTests.h"
29
30namespace blink {
31
32class AffineTransform;
33class Path;
34class SVGMatrixTearOff;
35
36class SVGGraphicsElement : public SVGElement, public SVGTests {
37    DEFINE_WRAPPERTYPEINFO();
38public:
39    virtual ~SVGGraphicsElement();
40
41    enum StyleUpdateStrategy { AllowStyleUpdate, DisallowStyleUpdate };
42
43    AffineTransform getCTM(StyleUpdateStrategy = AllowStyleUpdate);
44    AffineTransform getScreenCTM(StyleUpdateStrategy = AllowStyleUpdate);
45    PassRefPtr<SVGMatrixTearOff> getCTMFromJavascript();
46    PassRefPtr<SVGMatrixTearOff> getScreenCTMFromJavascript();
47
48    PassRefPtr<SVGMatrixTearOff> getTransformToElement(SVGElement*, ExceptionState&);
49
50    SVGElement* nearestViewportElement() const;
51    SVGElement* farthestViewportElement() const;
52
53    virtual AffineTransform localCoordinateSpaceTransform(SVGElement::CTMScope) const OVERRIDE { return animatedLocalTransform(); }
54    virtual AffineTransform animatedLocalTransform() const;
55    virtual AffineTransform* supplementalTransform() OVERRIDE;
56
57    virtual FloatRect getBBox();
58    PassRefPtr<SVGRectTearOff> getBBoxFromJavascript();
59
60    // "base class" methods for all the elements which render as paths
61    virtual void toClipPath(Path&);
62    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
63
64    virtual bool isValid() const OVERRIDE FINAL { return SVGTests::isValid(); }
65
66    SVGAnimatedTransformList* transform() { return m_transform.get(); }
67    const SVGAnimatedTransformList* transform() const { return m_transform.get(); }
68
69    AffineTransform computeCTM(SVGElement::CTMScope mode, SVGGraphicsElement::StyleUpdateStrategy,
70        const SVGGraphicsElement* ancestor = 0) const;
71
72protected:
73    SVGGraphicsElement(const QualifiedName&, Document&, ConstructionType = CreateSVGElement);
74
75    virtual bool supportsFocus() const OVERRIDE { return Element::supportsFocus() || hasFocusEventListeners(); }
76
77    bool isSupportedAttribute(const QualifiedName&);
78    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
79    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
80
81    RefPtr<SVGAnimatedTransformList> m_transform;
82
83private:
84    virtual bool isSVGGraphicsElement() const OVERRIDE FINAL { return true; }
85
86    // Used by <animateMotion>
87    OwnPtr<AffineTransform> m_supplementalTransform;
88};
89
90inline bool isSVGGraphicsElement(const SVGElement& element)
91{
92    return element.isSVGGraphicsElement();
93}
94
95DEFINE_SVGELEMENT_TYPE_CASTS_WITH_FUNCTION(SVGGraphicsElement);
96
97} // namespace blink
98
99#endif // SVGGraphicsElement_h
100