1 /*
2 * Copyright (C) 2009 Google 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "web/DragClientImpl.h"
33
34 #include "core/clipboard/Clipboard.h"
35 #include "core/clipboard/DataObject.h"
36 #include "core/frame/LocalFrame.h"
37 #include "platform/DragImage.h"
38 #include "platform/geometry/IntSize.h"
39 #include "platform/graphics/skia/NativeImageSkia.h"
40 #include "public/platform/WebCommon.h"
41 #include "public/platform/WebDragData.h"
42 #include "public/platform/WebImage.h"
43 #include "public/platform/WebPoint.h"
44 #include "public/web/WebDragOperation.h"
45 #include "public/web/WebViewClient.h"
46 #include "web/WebViewImpl.h"
47 #include "wtf/Assertions.h"
48 #include "wtf/RefPtr.h"
49
50 using namespace WebCore;
51
52 namespace blink {
53
actionMaskForDrag(DragData *)54 DragDestinationAction DragClientImpl::actionMaskForDrag(DragData*)
55 {
56 if (m_webView->client() && m_webView->client()->acceptsLoadDrops())
57 return DragDestinationActionAny;
58
59 return static_cast<DragDestinationAction>(
60 DragDestinationActionDHTML | DragDestinationActionEdit);
61 }
62
startDrag(DragImage * dragImage,const IntPoint & dragImageOrigin,const IntPoint & eventPos,Clipboard * clipboard,LocalFrame * frame,bool isLinkDrag)63 void DragClientImpl::startDrag(DragImage* dragImage,
64 const IntPoint& dragImageOrigin,
65 const IntPoint& eventPos,
66 Clipboard* clipboard,
67 LocalFrame* frame,
68 bool isLinkDrag)
69 {
70 // Add a ref to the frame just in case a load occurs mid-drag.
71 RefPtr<LocalFrame> frameProtector = frame;
72
73 WebDragData dragData(clipboard->dataObject());
74 WebDragOperationsMask dragOperationMask = static_cast<WebDragOperationsMask>(clipboard->sourceOperation());
75 WebImage image;
76 IntSize offsetSize(eventPos - dragImageOrigin);
77 WebPoint offsetPoint(offsetSize.width(), offsetSize.height());
78
79 if (dragImage) {
80 float resolutionScale = dragImage->resolutionScale();
81 if (m_webView->deviceScaleFactor() != resolutionScale) {
82 ASSERT(resolutionScale > 0);
83 float scale = m_webView->deviceScaleFactor() / resolutionScale;
84 dragImage->scale(scale, scale);
85 }
86 image = dragImage->bitmap();
87 }
88
89 m_webView->startDragging(frame, dragData, dragOperationMask, image, offsetPoint);
90 }
91
92 } // namespace blink
93