1 /* 2 * Copyright (C) 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 CanvasObject_h 27 #define CanvasObject_h 28 29 #include <wtf/PassRefPtr.h> 30 #include <wtf/RefCounted.h> 31 32 #include "GraphicsContext3D.h" 33 34 namespace WebCore { 35 36 class WebGLRenderingContext; 37 38 class CanvasObject : public RefCounted<CanvasObject> { 39 public: 40 virtual ~CanvasObject(); 41 object()42 Platform3DObject object() const { return m_object; } 43 void setObject(Platform3DObject, bool shouldDeleteObject = true); 44 void deleteObject(); 45 detachContext()46 void detachContext() 47 { 48 deleteObject(); 49 m_context = 0; 50 } 51 context()52 WebGLRenderingContext* context() const { return m_context; } 53 54 protected: 55 CanvasObject(WebGLRenderingContext*); 56 virtual void _deleteObject(Platform3DObject) = 0; 57 58 private: 59 Platform3DObject m_object; 60 // The shouldDeleteObject flag indicates whether this wrapper 61 // owns the underlying resource and should delete it when the 62 // wrapper is unreferenced for the last time and deleted. It 63 // is only set to false for certain objects returned from get 64 // queries. FIXME: should consider canonicalizing all of these 65 // objects in the future. 66 bool m_shouldDeleteObject; 67 WebGLRenderingContext* m_context; 68 }; 69 70 } // namespace WebCore 71 72 #endif // CanvasObject_h 73