1// Copyright (C) 2024 Jie Liu <liujie01@kylinos.cn>
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 "qwaylanddatacontrolv1_p.h"
5#include "qwaylandinputdevice_p.h"
6#include "qwaylanddisplay_p.h"
7#include "qwaylandmimehelper_p.h"
8
9#include <QtGui/private/qguiapplication_p.h>
10
11#include <qpa/qplatformclipboard.h>
12
13#include <signal.h>
14#include <unistd.h>
15
16QT_BEGIN_NAMESPACE
17
18namespace QtWaylandClient {
19
20QWaylandDataControlManagerV1::QWaylandDataControlManagerV1(QWaylandDisplay *display, uint id, uint version)
21 : zwlr_data_control_manager_v1(display->wl_registry(), id, qMin(version, uint(2)))
22 , m_display(display)
23{
24}
25
26QWaylandDataControlDeviceV1 *QWaylandDataControlManagerV1::createDevice(QWaylandInputDevice *seat)
27{
28 return new QWaylandDataControlDeviceV1(this, seat);
29}
30
31QWaylandDataControlOfferV1::QWaylandDataControlOfferV1(QWaylandDisplay *display, ::zwlr_data_control_offer_v1 *offer)
32 : zwlr_data_control_offer_v1(offer)
33 , m_display(display)
34 , m_mimeData(new QWaylandMimeData(this))
35{}
36
37void QWaylandDataControlOfferV1::startReceiving(const QString &mimeType, int fd)
38{
39 receive(mimeType, fd);
40 wl_display_flush(m_display->wl_display());
41}
42
43void QWaylandDataControlOfferV1::zwlr_data_control_offer_v1_offer(const QString &mime_type)
44{
45 m_mimeData->appendFormat(mimeType: mime_type);
46}
47
48QWaylandDataControlDeviceV1::QWaylandDataControlDeviceV1(
49 QWaylandDataControlManagerV1 *manager, QWaylandInputDevice *seat)
50 : QtWayland::zwlr_data_control_device_v1(manager->get_data_device(seat->wl_seat()))
51 , m_display(manager->display())
52 , m_seat(seat)
53{
54}
55
56QWaylandDataControlDeviceV1::~QWaylandDataControlDeviceV1()
57{
58 destroy();
59}
60
61void QWaylandDataControlDeviceV1::invalidateSelectionOffer()
62{
63 if (!m_selectionOffer)
64 return;
65
66 m_selectionOffer.reset();
67 QGuiApplicationPrivate::platformIntegration()->clipboard()->emitChanged(mode: QClipboard::Clipboard);
68}
69
70void QWaylandDataControlDeviceV1::setSelectionSource(QWaylandDataControlSourceV1 *source)
71{
72 if (source) {
73 connect(sender: source, signal: &QWaylandDataControlSourceV1::cancelled, context: this, slot: [this]() {
74 m_selectionSource.reset();
75 QGuiApplicationPrivate::platformIntegration()->clipboard()->emitChanged(mode: QClipboard::Clipboard);
76 });
77 }
78 set_selection(source ? source->object() : nullptr);
79 m_selectionSource.reset(other: source);
80}
81
82void QWaylandDataControlDeviceV1::setPrimarySelectionSource(QWaylandDataControlSourceV1 *source)
83{
84 if (source) {
85 connect(sender: source, signal: &QWaylandDataControlSourceV1::cancelled, context: this, slot: [this]() {
86 m_primarySelectionSource.reset();
87 QGuiApplicationPrivate::platformIntegration()->clipboard()->emitChanged(mode: QClipboard::Selection);
88 });
89 }
90 set_primary_selection(source ? source->object() : nullptr);
91 m_primarySelectionSource.reset(other: source);
92}
93
94void QWaylandDataControlDeviceV1::zwlr_data_control_device_v1_data_offer(zwlr_data_control_offer_v1 *offer)
95{
96 new QWaylandDataControlOfferV1(m_display, offer);
97}
98
99void QWaylandDataControlDeviceV1::zwlr_data_control_device_v1_selection(zwlr_data_control_offer_v1 *id)
100{
101 if (!id)
102 m_selectionOffer.reset();
103 else
104 m_selectionOffer.reset(other: static_cast<QWaylandDataControlOfferV1 *>(zwlr_data_control_offer_v1_get_user_data(id)));
105
106 // The selection event may be sent before platfrmIntegration is set.
107 if (auto* integration = QGuiApplicationPrivate::platformIntegration())
108 integration->clipboard()->emitChanged(mode: QClipboard::Clipboard);
109}
110
111void QWaylandDataControlDeviceV1::zwlr_data_control_device_v1_finished()
112{
113 m_selectionOffer.reset();
114 m_primarySelectionOffer.reset();
115 QGuiApplicationPrivate::platformIntegration()->clipboard()->emitChanged(mode: QClipboard::Clipboard);
116}
117
118void QWaylandDataControlDeviceV1::zwlr_data_control_device_v1_primary_selection(struct ::zwlr_data_control_offer_v1 *id)
119{
120 if (!id)
121 m_primarySelectionOffer.reset();
122 else
123 m_primarySelectionOffer.reset(other: static_cast<QWaylandDataControlOfferV1 *>(zwlr_data_control_offer_v1_get_user_data(id)));
124
125 // The selection event may be sent before platfrmIntegration is set.
126 if (auto* integration = QGuiApplicationPrivate::platformIntegration())
127 integration->clipboard()->emitChanged(mode: QClipboard::Selection);
128}
129
130QWaylandDataControlSourceV1::QWaylandDataControlSourceV1(QWaylandDataControlManagerV1 *manager, QMimeData *mimeData)
131 : QtWayland::zwlr_data_control_source_v1(manager->create_data_source())
132 , m_mimeData(mimeData)
133{
134 if (!mimeData)
135 return;
136 for (auto &format : mimeData->formats())
137 offer(format);
138}
139
140QWaylandDataControlSourceV1::~QWaylandDataControlSourceV1()
141{
142 destroy();
143}
144
145void QWaylandDataControlSourceV1::zwlr_data_control_source_v1_send(const QString &mime_type, int32_t fd)
146{
147 QByteArray content = QWaylandMimeHelper::getByteArray(mimeData: m_mimeData, mimeType: mime_type);
148 if (!content.isEmpty()) {
149 // Create a sigpipe handler that does nothing, or clients may be forced to terminate
150 // if the pipe is closed in the other end.
151 struct sigaction action, oldAction;
152 action.sa_handler = SIG_IGN;
153 sigemptyset (set: &action.sa_mask);
154 action.sa_flags = 0;
155
156 sigaction(SIGPIPE, act: &action, oact: &oldAction);
157 ssize_t unused = write(fd: fd, buf: content.constData(), n: size_t(content.size()));
158 Q_UNUSED(unused);
159 sigaction(SIGPIPE, act: &oldAction, oact: nullptr);
160 }
161 close(fd: fd);
162}
163
164} // namespace QtWaylandClient
165
166QT_END_NAMESPACE
167

source code of qtbase/src/plugins/platforms/wayland/qwaylanddatacontrolv1.cpp