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#if ENABLE(DRAG_SUPPORT)
30
31#include "ArgumentCodersGtk.h"
32#include "ShareableBitmap.h"
33#include "WebPage.h"
34#include "WebPageProxyMessages.h"
35#include "WebSelectionData.h"
36#include <WebCore/CairoOperations.h>
37#include <WebCore/DataTransfer.h>
38#include <WebCore/DragData.h>
39#include <WebCore/GraphicsContext.h>
40#include <WebCore/Pasteboard.h>
41#include <WebCore/PlatformContextCairo.h>
42#include <cairo.h>
43
44namespace WebKit {
45using namespace WebCore;
46
47static RefPtr<ShareableBitmap> convertCairoSurfaceToShareableBitmap(cairo_surface_t* surface)
48{
49 if (!surface)
50 return nullptr;
51
52 IntSize imageSize(cairo_image_surface_get_width(surface), cairo_image_surface_get_height(surface));
53 auto bitmap = ShareableBitmap::createShareable(imageSize, { });
54 auto graphicsContext = bitmap->createGraphicsContext();
55
56 ASSERT(graphicsContext->hasPlatformContext());
57 auto& state = graphicsContext->state();
58 Cairo::drawSurface(*graphicsContext->platformContext(), surface, IntRect(IntPoint(), imageSize), IntRect(IntPoint(), imageSize), state.imageInterpolationQuality, state.alpha, Cairo::ShadowState(state));
59 return bitmap;
60}
61
62void WebDragClient::didConcludeEditDrag()
63{
64}
65
66void WebDragClient::startDrag(DragItem item, DataTransfer& dataTransfer, Frame&)
67{
68 auto& dragImage = item.image;
69 RefPtr<ShareableBitmap> bitmap = convertCairoSurfaceToShareableBitmap(dragImage.get().get());
70 ShareableBitmap::Handle handle;
71
72 // If we have a bitmap, but cannot create a handle to it, we fail early.
73 if (bitmap && !bitmap->createHandle(handle))
74 return;
75
76 m_page->willStartDrag();
77
78 WebSelectionData selection(dataTransfer.pasteboard().selectionData());
79 m_page->send(Messages::WebPageProxy::StartDrag(selection, dataTransfer.sourceOperation(), handle));
80}
81
82}; // namespace WebKit.
83
84#endif // ENABLE(DRAG_SUPPORT)
85