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 31 namespace WebCore { 32 33 class HTMLCanvasElement; 34 35 class RenderHTMLCanvas FINAL : public RenderReplaced { 36 public: 37 explicit RenderHTMLCanvas(HTMLCanvasElement*); 38 39 virtual bool isCanvas() const { return true; } 40 virtual bool requiresLayer() const; 41 42 void canvasSizeChanged(); 43 44 private: 45 virtual const char* renderName() const { return "RenderHTMLCanvas"; } 46 virtual void paintReplaced(PaintInfo&, const LayoutPoint&); 47 virtual void intrinsicSizeChanged() { canvasSizeChanged(); } 48 }; 49 50 inline 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. 57 void toRenderHTMLCanvas(const RenderHTMLCanvas*); 58 59 } // namespace WebCore 60 61 #endif // RenderHTMLCanvas_h 62
