/* * Copyright (C) 2009 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef CanvasRenderingContext_h #define CanvasRenderingContext_h #include "core/html/HTMLCanvasElement.h" #include "wtf/HashSet.h" #include "wtf/Noncopyable.h" #include "wtf/text/StringHash.h" namespace blink { class WebLayer; } namespace WebCore { class HTMLCanvasElement; class KURL; class WebGLObject; class CanvasRenderingContext { WTF_MAKE_NONCOPYABLE(CanvasRenderingContext); WTF_MAKE_FAST_ALLOCATED; public: virtual ~CanvasRenderingContext() { } void ref() { m_canvas->ref(); } void deref() { m_canvas->deref(); } HTMLCanvasElement* canvas() const { return m_canvas; } virtual bool is2d() const { return false; } virtual bool is3d() const { return false; } virtual bool isAccelerated() const { return false; } virtual bool hasAlpha() const { return true; } virtual void paintRenderingResultsToCanvas() {} virtual blink::WebLayer* platformLayer() const { return 0; } protected: CanvasRenderingContext(HTMLCanvasElement*); private: HTMLCanvasElement* m_canvas; }; } // namespace WebCore #endif