15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2009 Apple Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef CanvasRenderingContext_h 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define CanvasRenderingContext_h 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/html/HTMLCanvasElement.h" 30f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu#include "platform/heap/Handle.h" 31591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/HashSet.h" 32591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/Noncopyable.h" 33591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/text/StringHash.h" 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 3551b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles)namespace blink { class WebLayer; } 36521d96ec04ace82590870fb04353ec4f82bb150fTorne (Richard Coles) 37c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 39f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles)class CanvasImageSource; 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class HTMLCanvasElement; 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class KURL; 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class WebGLObject; 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 44f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liuclass CanvasRenderingContext : public NoBaseWillBeGarbageCollectedFinalized<CanvasRenderingContext> { 45f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu WTF_MAKE_NONCOPYABLE(CanvasRenderingContext); 46f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED; 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) virtual ~CanvasRenderingContext() { } 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 50f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu#if !ENABLE(OILPAN) 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void ref() { m_canvas->ref(); } 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void deref() { m_canvas->deref(); } 53f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu#endif 54f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) HTMLCanvasElement* canvas() const { return m_canvas; } 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) virtual bool is2d() const { return false; } 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) virtual bool is3d() const { return false; } 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) virtual bool isAccelerated() const { return false; } 6053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) virtual bool hasAlpha() const { return true; } 617242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci virtual void setIsHidden(bool) = 0; 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) virtual void paintRenderingResultsToCanvas() {} 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 6551b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles) virtual blink::WebLayer* platformLayer() const { return 0; } 66f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu 67f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu virtual void trace(Visitor* visitor) { visitor->trace(m_canvas); } 68f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu 69f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) bool wouldTaintOrigin(CanvasImageSource*); 70f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)protected: 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) CanvasRenderingContext(HTMLCanvasElement*); 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 75f91f5fa1608c2cdd9af1842fb5dadbe78275be2aBo Liu RawPtrWillBeMember<HTMLCanvasElement> m_canvas; 76f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) HashSet<String> m_cleanURLs; 77f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) HashSet<String> m_dirtyURLs; 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 80c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 83