1 /*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "config.h"
28 #include "ChunkedUpdateDrawingAreaProxy.h"
29
30 #include "DrawingAreaMessageKinds.h"
31 #include "DrawingAreaProxyMessageKinds.h"
32 #include "UpdateChunk.h"
33 #include "WKAPICast.h"
34 #include "WebPageProxy.h"
35 #include "qgraphicswkview.h"
36 #include <QPainter>
37
38 using namespace WebCore;
39
40 namespace WebKit {
41
page()42 WebPageProxy* ChunkedUpdateDrawingAreaProxy::page()
43 {
44 return toImpl(m_webView->page()->pageRef());
45 }
46
ensureBackingStore()47 void ChunkedUpdateDrawingAreaProxy::ensureBackingStore()
48 {
49 if (!m_backingStoreImage.isNull())
50 return;
51
52 m_backingStoreImage = QImage(size().width(), size().height(), QImage::Format_RGB32);
53 }
54
invalidateBackingStore()55 void ChunkedUpdateDrawingAreaProxy::invalidateBackingStore()
56 {
57 m_backingStoreImage = QImage();
58 }
59
platformPaint(const IntRect & rect,QPainter * painter)60 bool ChunkedUpdateDrawingAreaProxy::platformPaint(const IntRect& rect, QPainter* painter)
61 {
62 if (m_backingStoreImage.isNull())
63 return false;
64
65 painter->drawImage(QPoint(0, 0), m_backingStoreImage);
66 return true;
67 }
68
drawUpdateChunkIntoBackingStore(UpdateChunk * updateChunk)69 void ChunkedUpdateDrawingAreaProxy::drawUpdateChunkIntoBackingStore(UpdateChunk* updateChunk)
70 {
71 ensureBackingStore();
72
73 QImage image(updateChunk->createImage());
74 const IntRect& updateChunkRect = updateChunk->rect();
75
76 QPainter painter(&m_backingStoreImage);
77 painter.drawImage(updateChunkRect.location(), image);
78
79 m_webView->update(QRect(updateChunkRect));
80 }
81
82 } // namespace WebKit
83