1 /* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * Portions Copyright (c) 2010 Motorola Mobility, Inc. All rights reserved. 4 * Copyright (C) 2011 Igalia S.L 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 17 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 25 * THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef UpdateChunk_h 29 #define UpdateChunk_h 30 31 #include "IntRect.h" 32 #include "SharedMemory.h" 33 34 #include <cairo.h> 35 36 namespace CoreIPC { 37 class ArgumentEncoder; 38 class ArgumentDecoder; 39 } 40 41 namespace WebKit { 42 43 class UpdateChunk { 44 public: 45 UpdateChunk(); 46 UpdateChunk(const WebCore::IntRect&); 47 ~UpdateChunk(); 48 49 const WebCore::IntRect& rect() const { return m_rect; } 50 bool isEmpty() { return m_rect.isEmpty(); } 51 52 void encode(CoreIPC::ArgumentEncoder*) const; 53 static bool decode(CoreIPC::ArgumentDecoder*, UpdateChunk&); 54 55 cairo_surface_t* createImage() const; 56 57 private: 58 size_t size() const; 59 int m_stride; 60 WebCore::IntRect m_rect; 61 mutable RefPtr<SharedMemory> m_sharedMemory; 62 }; 63 64 } // namespace WebKit 65 66 67 #endif // UpdateChunk_h 68
