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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 #include "config.h"
     27 #include "BackingStore.h"
     28 
     29 #include "ShareableBitmap.h"
     30 #include "UpdateInfo.h"
     31 
     32 using namespace WebCore;
     33 
     34 #if !PLATFORM(MAC) && !PLATFORM(WIN)
     35 #error "This class is not ready for use by other ports yet."
     36 #endif
     37 
     38 namespace WebKit {
     39 
     40 PassOwnPtr<BackingStore> BackingStore::create(const IntSize& size, WebPageProxy* webPageProxy)
     41 {
     42     return adoptPtr(new BackingStore(size, webPageProxy));
     43 }
     44 
     45 BackingStore::BackingStore(const IntSize& size, WebPageProxy* webPageProxy)
     46     : m_size(size)
     47     , m_webPageProxy(webPageProxy)
     48 {
     49     ASSERT(!m_size.isEmpty());
     50 }
     51 
     52 BackingStore::~BackingStore()
     53 {
     54 }
     55 
     56 void BackingStore::incorporateUpdate(const UpdateInfo& updateInfo)
     57 {
     58 //    ASSERT(m_size == updateInfo.viewSize);
     59 
     60     RefPtr<ShareableBitmap> bitmap = ShareableBitmap::create(updateInfo.bitmapHandle);
     61     if (!bitmap)
     62         return;
     63     ASSERT(bitmap->size() == updateInfo.updateRectBounds.size());
     64 
     65     incorporateUpdate(bitmap.get(), updateInfo);
     66 }
     67 
     68 } // namespace WebKit
     69