1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "qwaylanddnd_p.h"
5
6#include "qwaylanddatadevice_p.h"
7#include "qwaylanddatadevicemanager_p.h"
8#include "qwaylanddataoffer_p.h"
9#include "qwaylandinputdevice_p.h"
10#include "qwaylanddisplay_p.h"
11
12#include <QtGui/private/qshapedpixmapdndwindow_p.h>
13
14#include <QDebug>
15
16QT_BEGIN_NAMESPACE
17#if QT_CONFIG(draganddrop)
18namespace QtWaylandClient {
19
20QWaylandDrag::QWaylandDrag(QWaylandDisplay *display)
21 : m_display(display)
22{
23}
24
25QWaylandDrag::~QWaylandDrag()
26{
27}
28
29void QWaylandDrag::startDrag()
30{
31 // Some compositors do not send a pointer leave before starting a drag, some do.
32 // This is discussed upstream at: https://gitlab.freedesktop.org/wayland/wayland/-/issues/444
33 // For consistency between compositors we emit the leave event here, upon drag start.
34 m_display->currentInputDevice()->handleStartDrag();
35
36 QBasicDrag::startDrag();
37 QWaylandWindow *icon = static_cast<QWaylandWindow *>(shapedPixmapWindow()->handle());
38 if (m_display->currentInputDevice()->dataDevice()->startDrag(mimeData: drag()->mimeData(), supportedActions: drag()->supportedActions(), icon)) {
39 icon->addAttachOffset(point: -drag()->hotSpot());
40 } else {
41 // Cancelling immediately does not work, since the event loop for QDrag::exec is started
42 // after this function returns.
43 QMetaObject::invokeMethod(object: this, function: [this](){ cancelDrag(); }, type: Qt::QueuedConnection);
44 }
45}
46
47void QWaylandDrag::cancel()
48{
49 QBasicDrag::cancel();
50
51 m_display->currentInputDevice()->dataDevice()->cancelDrag();
52
53 if (drag())
54 drag()->deleteLater();
55}
56
57void QWaylandDrag::move(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
58{
59 Q_UNUSED(globalPos);
60 Q_UNUSED(b);
61 Q_UNUSED(mods);
62 // Do nothing
63}
64
65void QWaylandDrag::drop(const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods)
66{
67 QBasicDrag::drop(globalPos, b, mods);
68}
69
70void QWaylandDrag::endDrag()
71{
72 m_display->currentInputDevice()->handleEndDrag();
73}
74
75void QWaylandDrag::setResponse(bool accepted)
76{
77 // This method is used for old DataDevices where the drag action is not communicated
78 Qt::DropAction action = defaultAction(possibleActions: drag()->supportedActions(), modifiers: m_display->currentInputDevice()->modifiers());
79 setResponse(QPlatformDropQtResponse(accepted, action));
80}
81
82void QWaylandDrag::setResponse(const QPlatformDropQtResponse &response)
83{
84 setCanDrop(response.isAccepted());
85
86 if (canDrop()) {
87 updateCursor(action: response.acceptedAction());
88 } else {
89 updateCursor(action: Qt::IgnoreAction);
90 }
91}
92
93void QWaylandDrag::setDropResponse(const QPlatformDropQtResponse &response)
94{
95 setExecutedDropAction(response.acceptedAction());
96}
97
98void QWaylandDrag::finishDrag()
99{
100 QKeyEvent event(QEvent::KeyPress, Qt::Key_Escape, Qt::NoModifier);
101 eventFilter(o: shapedPixmapWindow(), e: &event);
102
103 if (drag())
104 drag()->deleteLater();
105}
106
107bool QWaylandDrag::ownsDragObject() const
108{
109 return true;
110}
111
112}
113#endif // draganddrop
114QT_END_NAMESPACE
115

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source code of qtwayland/src/client/qwaylanddnd.cpp