1/*
2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2009 Google, Inc.
5 * Copyright (C) 2009 Apple Inc. All rights reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB.  If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#ifndef RenderSVGViewportContainer_h
24#define RenderSVGViewportContainer_h
25
26#include "RenderSVGContainer.h"
27
28namespace WebCore {
29
30// This is used for non-root <svg> elements and <marker> elements, neither of which are SVGTransformable
31// thus we inherit from RenderSVGContainer instead of RenderSVGTransformableContainer
32class RenderSVGViewportContainer final : public RenderSVGContainer {
33public:
34    RenderSVGViewportContainer(SVGSVGElement&, PassRef<RenderStyle>);
35
36    SVGSVGElement& svgSVGElement() const;
37
38    FloatRect viewport() const { return m_viewport; }
39
40    bool isLayoutSizeChanged() const { return m_isLayoutSizeChanged; }
41    virtual bool didTransformToRootUpdate() { return m_didTransformToRootUpdate; }
42
43    virtual void determineIfLayoutSizeChanged();
44    virtual void setNeedsTransformUpdate() { m_needsTransformUpdate = true; }
45
46    virtual void paint(PaintInfo&, const LayoutPoint&) override;
47
48private:
49    void element() const = delete;
50
51    virtual bool isSVGViewportContainer() const { return true; }
52    virtual const char* renderName() const { return "RenderSVGViewportContainer"; }
53
54    AffineTransform viewportTransform() const;
55    virtual const AffineTransform& localToParentTransform() const { return m_localToParentTransform; }
56
57    virtual void calcViewport();
58    virtual bool calculateLocalTransform();
59
60    virtual void applyViewportClip(PaintInfo&);
61    virtual bool pointIsInsideViewportClip(const FloatPoint& pointInParent);
62
63    FloatRect m_viewport;
64    mutable AffineTransform m_localToParentTransform;
65    bool m_didTransformToRootUpdate : 1;
66    bool m_isLayoutSizeChanged : 1;
67    bool m_needsTransformUpdate : 1;
68};
69
70RENDER_OBJECT_TYPE_CASTS(RenderSVGViewportContainer, isSVGViewportContainer())
71
72} // namespace WebCore
73
74#endif // RenderSVGViewportContainer_h
75