1 /*
2 * Copyright (C) 2010 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 "ChunkedUpdateDrawingArea.h"
28
29 #include "UpdateChunk.h"
30 #include "WebFrame.h"
31 #include "WebPage.h"
32 #include "WebFrameLoaderClient.h"
33 #include <WebCore/Frame.h>
34 #include <WebCore/GraphicsContext.h>
35 #include <wtf/RetainPtr.h>
36
37 using namespace WebCore;
38
39 namespace WebKit {
40
paintIntoUpdateChunk(UpdateChunk * updateChunk)41 void ChunkedUpdateDrawingArea::paintIntoUpdateChunk(UpdateChunk* updateChunk)
42 {
43 // FIXME: It would be better if we could avoid painting altogether when there is a custom representation.
44 if (m_webPage->mainFrameHasCustomRepresentation())
45 return;
46
47 RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());
48 RetainPtr<CGContextRef> bitmapContext(AdoptCF, CGBitmapContextCreate(updateChunk->data(), updateChunk->rect().width(), updateChunk->rect().height(), 8, updateChunk->rect().width() * 4, colorSpace.get(), kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host));
49
50 // WebCore expects a flipped coordinate system.
51 CGContextTranslateCTM(bitmapContext.get(), 0.0, updateChunk->rect().height());
52 CGContextScaleCTM(bitmapContext.get(), 1.0, -1.0);
53
54 // Now paint into the backing store.
55 GraphicsContext graphicsContext(bitmapContext.get());
56 graphicsContext.translate(-updateChunk->rect().x(), -updateChunk->rect().y());
57
58 m_webPage->drawRect(graphicsContext, updateChunk->rect());
59 }
60
61 } // namespace WebKit
62