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      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 UpdateInfo_h
     27 #define UpdateInfo_h
     28 
     29 #include "ShareableBitmap.h"
     30 #include <WebCore/IntRect.h>
     31 #include <wtf/Noncopyable.h>
     32 
     33 namespace CoreIPC {
     34     class ArgumentDecoder;
     35     class ArgumentEncoder;
     36 }
     37 
     38 namespace WebKit {
     39 
     40 class UpdateInfo {
     41     WTF_MAKE_NONCOPYABLE(UpdateInfo);
     42 
     43 public:
     44     UpdateInfo() { }
     45 
     46     void encode(CoreIPC::ArgumentEncoder*) const;
     47     static bool decode(CoreIPC::ArgumentDecoder*, UpdateInfo&);
     48 
     49     // The size of the web view.
     50     WebCore::IntSize viewSize;
     51 
     52     // The rect and delta to be scrolled.
     53     WebCore::IntRect scrollRect;
     54     WebCore::IntSize scrollOffset;
     55 
     56     // The bounds of the update rects.
     57     WebCore::IntRect updateRectBounds;
     58 
     59     // All the update rects, in view coordinates.
     60     Vector<WebCore::IntRect> updateRects;
     61 
     62     // The handle of the shareable bitmap containing the updates. Will be null if there are no updates.
     63     ShareableBitmap::Handle bitmapHandle;
     64 };
     65 
     66 } // namespace WebKit
     67 
     68 #endif // UpdateInfo_h
     69