1/* 2 * Copyright (C) 2011 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 INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef LayerTreeContext_h 27#define LayerTreeContext_h 28 29#include <stdint.h> 30 31namespace IPC { 32class ArgumentDecoder; 33class ArgumentEncoder; 34} 35 36namespace WebKit { 37 38enum class LayerHostingMode { 39 InProcess, 40#if HAVE(OUT_OF_PROCESS_LAYER_HOSTING) 41 OutOfProcess 42#endif 43}; 44 45class LayerTreeContext { 46public: 47 LayerTreeContext(); 48 ~LayerTreeContext(); 49 50 void encode(IPC::ArgumentEncoder&) const; 51 static bool decode(IPC::ArgumentDecoder&, LayerTreeContext&); 52 53 bool isEmpty() const; 54 55 uint64_t contextID; 56}; 57 58bool operator==(const LayerTreeContext&, const LayerTreeContext&); 59 60inline bool operator!=(const LayerTreeContext& a, const LayerTreeContext& b) 61{ 62 return !(a == b); 63} 64 65}; 66 67#endif // LayerTreeContext_h 68