1/*
2 * Copyright (C) 2011 Igalia S.L.
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 "WebDragClient.h"
28
29#include "ArgumentCodersGtk.h"
30#include "ShareableBitmap.h"
31#include "WebPage.h"
32#include "WebPageProxyMessages.h"
33#include <WebCore/Clipboard.h>
34#include <WebCore/DataObjectGtk.h>
35#include <WebCore/DragData.h>
36#include <WebCore/GraphicsContext.h>
37#include <WebCore/Pasteboard.h>
38#include <WebCore/PlatformContextCairo.h>
39
40using namespace WebCore;
41
42namespace WebKit {
43
44static PassRefPtr<ShareableBitmap> convertCairoSurfaceToShareableBitmap(cairo_surface_t* surface)
45{
46    if (!surface)
47        return 0;
48
49    IntSize imageSize(cairo_image_surface_get_width(surface), cairo_image_surface_get_height(surface));
50    RefPtr<ShareableBitmap> bitmap = ShareableBitmap::createShareable(imageSize, ShareableBitmap::SupportsAlpha);
51    OwnPtr<GraphicsContext> graphicsContext = bitmap->createGraphicsContext();
52
53    graphicsContext->platformContext()->drawSurfaceToContext(surface, IntRect(IntPoint(), imageSize), IntRect(IntPoint(), imageSize), graphicsContext.get());
54    return bitmap.release();
55}
56
57void WebDragClient::startDrag(DragImageRef dragImage, const IntPoint& clientPosition, const IntPoint& globalPosition, Clipboard* clipboard, Frame*, bool)
58{
59    RefPtr<ShareableBitmap> bitmap = convertCairoSurfaceToShareableBitmap(dragImage);
60    ShareableBitmap::Handle handle;
61
62    // If we have a bitmap, but cannot create a handle to it, we fail early.
63    if (bitmap && !bitmap->createHandle(handle))
64        return;
65
66    RefPtr<DataObjectGtk> dataObject = clipboard->pasteboard().dataObject();
67    DragData dragData(dataObject.get(), clientPosition, globalPosition, clipboard->sourceOperation());
68    m_page->send(Messages::WebPageProxy::StartDrag(dragData, handle));
69}
70
71}; // namespace WebKit.
72