1 /*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 * Portions Copyright (c) 2010 Motorola Mobility, Inc. All rights reserved.
4 * Copyright (C) 2011 Igalia S.L
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
17 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
25 * THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "config.h"
29 #include "ChunkedUpdateDrawingAreaProxy.h"
30
31 #include "RefPtrCairo.h"
32 #include "UpdateChunk.h"
33 #include "WebProcessProxy.h"
34 #include "WebView.h"
35 #include <WebCore/GtkVersioning.h>
36 #include <gdk/gdk.h>
37
38 using namespace WebCore;
39
40 namespace WebKit {
41
page()42 WebPageProxy* ChunkedUpdateDrawingAreaProxy::page()
43 {
44 return m_webView->page();
45 }
46
ensureBackingStore()47 void ChunkedUpdateDrawingAreaProxy::ensureBackingStore()
48 {
49 if (m_backingStoreImage)
50 return;
51
52 m_backingStoreImage = gdk_window_create_similar_surface(gtk_widget_get_window(m_webView->window()),
53 CAIRO_CONTENT_COLOR_ALPHA, size().width(), size().height());
54 }
55
invalidateBackingStore()56 void ChunkedUpdateDrawingAreaProxy::invalidateBackingStore()
57 {
58 if (m_backingStoreImage) {
59 cairo_surface_destroy(m_backingStoreImage);
60 m_backingStoreImage = 0;
61 }
62 }
63
platformPaint(const IntRect & rect,cairo_t * cr)64 bool ChunkedUpdateDrawingAreaProxy::platformPaint(const IntRect& rect, cairo_t* cr)
65 {
66 if (!m_backingStoreImage)
67 return false;
68
69 cairo_rectangle(cr, rect.x(), rect.y(), rect.width(), rect.height());
70 cairo_set_source_surface(cr, m_backingStoreImage, 0, 0);
71 cairo_fill(cr);
72
73 return true;
74 }
75
drawUpdateChunkIntoBackingStore(UpdateChunk * updateChunk)76 void ChunkedUpdateDrawingAreaProxy::drawUpdateChunkIntoBackingStore(UpdateChunk* updateChunk)
77 {
78 ensureBackingStore();
79
80 RefPtr<cairo_surface_t> pixmap(updateChunk->createImage());
81 if (cairo_surface_status(pixmap.get()) != CAIRO_STATUS_SUCCESS)
82 return;
83
84 const IntRect& updateChunkRect = updateChunk->rect();
85
86 RefPtr<cairo_t> cr = cairo_create(m_backingStoreImage);
87 cairo_set_source_surface(cr.get(), pixmap.get(), updateChunkRect.x(), updateChunkRect.y());
88 cairo_paint(cr.get());
89
90 gtk_widget_queue_draw_area(m_webView->window(), updateChunkRect.x(), updateChunkRect.y(),
91 updateChunkRect.width(), updateChunkRect.height());
92 }
93
94 } // namespace WebKit
95