blob: 132086eb1352c8b3d0558807bf08e14903387f76 [file] [log] [blame]
Gerd Hoffmann660e8d02021-05-19 07:39:33 +02001#include "qemu/osdep.h"
2#include "ui/clipboard.h"
Marc-André Lureau410840c2022-09-12 14:24:51 +04003#include "trace.h"
Gerd Hoffmann660e8d02021-05-19 07:39:33 +02004
5static NotifierList clipboard_notifiers =
6 NOTIFIER_LIST_INITIALIZER(clipboard_notifiers);
7
Marc-André Lureau684e64d2021-08-05 17:57:02 +04008static QemuClipboardInfo *cbinfo[QEMU_CLIPBOARD_SELECTION__COUNT];
9
Gerd Hoffmann660e8d02021-05-19 07:39:33 +020010void qemu_clipboard_peer_register(QemuClipboardPeer *peer)
11{
Marc-André Lureau1b17f1e2021-07-19 19:42:15 +040012 notifier_list_add(&clipboard_notifiers, &peer->notifier);
Gerd Hoffmann660e8d02021-05-19 07:39:33 +020013}
14
15void qemu_clipboard_peer_unregister(QemuClipboardPeer *peer)
16{
Marc-André Lureau7424bfa2021-08-05 17:57:05 +040017 int i;
18
19 for (i = 0; i < QEMU_CLIPBOARD_SELECTION__COUNT; i++) {
20 qemu_clipboard_peer_release(peer, i);
21 }
Marc-André Lureau1b17f1e2021-07-19 19:42:15 +040022 notifier_remove(&peer->notifier);
Gerd Hoffmann660e8d02021-05-19 07:39:33 +020023}
24
Marc-André Lureau482bbaf2021-08-05 17:57:03 +040025bool qemu_clipboard_peer_owns(QemuClipboardPeer *peer,
26 QemuClipboardSelection selection)
27{
28 QemuClipboardInfo *info = qemu_clipboard_info(selection);
29
30 return info && info->owner == peer;
31}
32
Marc-André Lureau13878652021-08-05 17:57:04 +040033void qemu_clipboard_peer_release(QemuClipboardPeer *peer,
34 QemuClipboardSelection selection)
35{
36 g_autoptr(QemuClipboardInfo) info = NULL;
37
38 if (qemu_clipboard_peer_owns(peer, selection)) {
39 /* set empty clipboard info */
40 info = qemu_clipboard_info_new(NULL, selection);
41 qemu_clipboard_update(info);
42 }
43}
44
Marc-André Lureau349504e2021-07-21 15:19:13 +040045bool qemu_clipboard_check_serial(QemuClipboardInfo *info, bool client)
46{
Marc-André Lureau410840c2022-09-12 14:24:51 +040047 bool ok;
48
Marc-André Lureau349504e2021-07-21 15:19:13 +040049 if (!info->has_serial ||
50 !cbinfo[info->selection] ||
51 !cbinfo[info->selection]->has_serial) {
Marc-André Lureau410840c2022-09-12 14:24:51 +040052 trace_clipboard_check_serial(-1, -1, true);
Marc-André Lureau349504e2021-07-21 15:19:13 +040053 return true;
54 }
55
56 if (client) {
Marc-André Lureau0e23ae92022-09-12 14:24:52 +040057 ok = info->serial >= cbinfo[info->selection]->serial;
Marc-André Lureau349504e2021-07-21 15:19:13 +040058 } else {
Marc-André Lureau0e23ae92022-09-12 14:24:52 +040059 ok = info->serial > cbinfo[info->selection]->serial;
Marc-André Lureau349504e2021-07-21 15:19:13 +040060 }
Marc-André Lureau410840c2022-09-12 14:24:51 +040061
62 trace_clipboard_check_serial(cbinfo[info->selection]->serial, info->serial, ok);
63 return ok;
Marc-André Lureau349504e2021-07-21 15:19:13 +040064}
65
Gerd Hoffmann660e8d02021-05-19 07:39:33 +020066void qemu_clipboard_update(QemuClipboardInfo *info)
67{
Fiona Ebner9c416582024-01-24 11:57:49 +010068 uint32_t type;
Marc-André Lureau1b17f1e2021-07-19 19:42:15 +040069 QemuClipboardNotify notify = {
70 .type = QEMU_CLIPBOARD_UPDATE_INFO,
71 .info = info,
72 };
Marc-André Lureau684e64d2021-08-05 17:57:02 +040073 assert(info->selection < QEMU_CLIPBOARD_SELECTION__COUNT);
74
Fiona Ebner9c416582024-01-24 11:57:49 +010075 for (type = 0; type < QEMU_CLIPBOARD_TYPE__COUNT; type++) {
76 /*
77 * If data is missing, the clipboard owner's 'request' callback needs to
78 * be set. Otherwise, there is no way to get the clipboard data and
79 * qemu_clipboard_request() cannot be called.
80 */
81 if (info->types[type].available && !info->types[type].data) {
82 assert(info->owner && info->owner->request);
83 }
84 }
85
Marc-André Lureau1b17f1e2021-07-19 19:42:15 +040086 notifier_list_notify(&clipboard_notifiers, &notify);
Marc-André Lureau684e64d2021-08-05 17:57:02 +040087
Marc-André Lureau02a8ee22022-02-14 15:59:17 +040088 if (cbinfo[info->selection] != info) {
89 qemu_clipboard_info_unref(cbinfo[info->selection]);
90 cbinfo[info->selection] = qemu_clipboard_info_ref(info);
91 }
Marc-André Lureau684e64d2021-08-05 17:57:02 +040092}
93
94QemuClipboardInfo *qemu_clipboard_info(QemuClipboardSelection selection)
95{
96 assert(selection < QEMU_CLIPBOARD_SELECTION__COUNT);
97
98 return cbinfo[selection];
Gerd Hoffmann660e8d02021-05-19 07:39:33 +020099}
100
101QemuClipboardInfo *qemu_clipboard_info_new(QemuClipboardPeer *owner,
102 QemuClipboardSelection selection)
103{
104 QemuClipboardInfo *info = g_new0(QemuClipboardInfo, 1);
105
106 info->owner = owner;
107 info->selection = selection;
108 info->refcount = 1;
109
110 return info;
111}
112
113QemuClipboardInfo *qemu_clipboard_info_ref(QemuClipboardInfo *info)
114{
115 info->refcount++;
116 return info;
117}
118
119void qemu_clipboard_info_unref(QemuClipboardInfo *info)
120{
121 uint32_t type;
122
123 if (!info) {
124 return;
125 }
126
127 info->refcount--;
128 if (info->refcount > 0) {
129 return;
130 }
131
132 for (type = 0; type < QEMU_CLIPBOARD_TYPE__COUNT; type++) {
133 g_free(info->types[type].data);
134 }
135 g_free(info);
136}
137
138void qemu_clipboard_request(QemuClipboardInfo *info,
139 QemuClipboardType type)
140{
141 if (info->types[type].data ||
142 info->types[type].requested ||
143 !info->types[type].available ||
144 !info->owner)
145 return;
146
Fiona Ebner9c416582024-01-24 11:57:49 +0100147 assert(info->owner->request);
148
Gerd Hoffmann660e8d02021-05-19 07:39:33 +0200149 info->types[type].requested = true;
150 info->owner->request(info, type);
151}
152
Marc-André Lureau505dbf92021-07-19 19:49:56 +0400153void qemu_clipboard_reset_serial(void)
154{
155 QemuClipboardNotify notify = { .type = QEMU_CLIPBOARD_RESET_SERIAL };
Marc-André Lureau72ce36f2022-09-12 14:24:54 +0400156 int i;
Marc-André Lureau505dbf92021-07-19 19:49:56 +0400157
Marc-André Lureau63a5d4d2024-07-17 21:15:39 +0400158 trace_clipboard_reset_serial();
159
Marc-André Lureau72ce36f2022-09-12 14:24:54 +0400160 for (i = 0; i < QEMU_CLIPBOARD_SELECTION__COUNT; i++) {
161 QemuClipboardInfo *info = qemu_clipboard_info(i);
162 if (info) {
163 info->serial = 0;
164 }
165 }
Marc-André Lureau505dbf92021-07-19 19:49:56 +0400166 notifier_list_notify(&clipboard_notifiers, &notify);
167}
168
Gerd Hoffmann660e8d02021-05-19 07:39:33 +0200169void qemu_clipboard_set_data(QemuClipboardPeer *peer,
170 QemuClipboardInfo *info,
171 QemuClipboardType type,
172 uint32_t size,
Akihiko Odaki7e3e20d2021-06-16 23:19:54 +0900173 const void *data,
Gerd Hoffmann660e8d02021-05-19 07:39:33 +0200174 bool update)
175{
176 if (!info ||
177 info->owner != peer) {
178 return;
179 }
180
181 g_free(info->types[type].data);
Fiona Ebner405484b2024-01-24 11:57:48 +0100182 if (size) {
183 info->types[type].data = g_memdup2(data, size);
184 info->types[type].size = size;
185 info->types[type].available = true;
186 } else {
187 info->types[type].data = NULL;
188 info->types[type].size = 0;
189 info->types[type].available = false;
190 }
Gerd Hoffmann660e8d02021-05-19 07:39:33 +0200191
192 if (update) {
193 qemu_clipboard_update(info);
194 }
195}