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
32using namespace WebCore;
33
34namespace WebKit {
35
36BackingStore::BackingStore(const IntSize& size, float deviceScaleFactor, WebPageProxy* webPageProxy)
37    : m_size(size)
38    , m_deviceScaleFactor(deviceScaleFactor)
39    , m_webPageProxy(webPageProxy)
40{
41    ASSERT(!m_size.isEmpty());
42}
43
44BackingStore::~BackingStore()
45{
46}
47
48void BackingStore::incorporateUpdate(const UpdateInfo& updateInfo)
49{
50    ASSERT(m_size == updateInfo.viewSize);
51
52    RefPtr<ShareableBitmap> bitmap = ShareableBitmap::create(updateInfo.bitmapHandle);
53    if (!bitmap)
54        return;
55
56#if !ASSERT_DISABLED
57    IntSize updateSize = updateInfo.updateRectBounds.size();
58    updateSize.scale(m_deviceScaleFactor);
59    ASSERT(bitmap->size() == updateSize);
60#endif
61
62    incorporateUpdate(bitmap.get(), updateInfo);
63}
64
65} // namespace WebKit
66