1 /*
2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
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 "TiledDrawingArea.h"
28
29 #if ENABLE(TILED_BACKING_STORE)
30
31 #include "UpdateChunk.h"
32 #include "WebPage.h"
33 #include <WebCore/GraphicsContext.h>
34
35 #include <QImage>
36 #include <QPainter>
37
38 using namespace WebCore;
39
40 namespace WebKit {
41
paintIntoUpdateChunk(UpdateChunk * updateChunk,float scale)42 void TiledDrawingArea::paintIntoUpdateChunk(UpdateChunk* updateChunk, float scale)
43 {
44 IntRect tileRect = updateChunk->rect();
45 QImage image(updateChunk->createImage());
46 QPainter painter(&image);
47 // Now paint into the backing store.
48 GraphicsContext graphicsContext(&painter);
49 graphicsContext.translate(-tileRect.x(), -tileRect.y());
50 graphicsContext.scale(FloatSize(scale, scale));
51 IntRect contentRect = enclosingIntRect(FloatRect(tileRect.x() / scale,
52 tileRect.y() / scale,
53 tileRect.width() / scale,
54 tileRect.height() / scale));
55 m_webPage->drawRect(graphicsContext, contentRect);
56 }
57
58 } // namespace WebKit
59
60 #endif // TILED_BACKING_STORE
61