1/*
2 * Copyright (C) 2004, 2006, 2007, 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef RenderHTMLCanvas_h
27#define RenderHTMLCanvas_h
28
29#include "core/rendering/RenderReplaced.h"
30
31namespace WebCore {
32
33class HTMLCanvasElement;
34
35class RenderHTMLCanvas FINAL : public RenderReplaced {
36public:
37    explicit RenderHTMLCanvas(HTMLCanvasElement*);
38
39    virtual bool isCanvas() const { return true; }
40    virtual bool requiresLayer() const;
41
42    void canvasSizeChanged();
43
44private:
45    virtual const char* renderName() const { return "RenderHTMLCanvas"; }
46    virtual void paintReplaced(PaintInfo&, const LayoutPoint&);
47    virtual void intrinsicSizeChanged() { canvasSizeChanged(); }
48};
49
50inline RenderHTMLCanvas* toRenderHTMLCanvas(RenderObject* object)
51{
52    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isCanvas());
53    return static_cast<RenderHTMLCanvas*>(object);
54}
55
56// This will catch anyone doing an unnecessary cast.
57void toRenderHTMLCanvas(const RenderHTMLCanvas*);
58
59} // namespace WebCore
60
61#endif // RenderHTMLCanvas_h
62