1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
|
// Copyright 2005-2019 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#include "GlobalShortcut_unix.h"
#include "Settings.h"
#include <QtCore/QFileSystemWatcher>
#include <QtCore/QSocketNotifier>
// We define a global macro called 'g'. This can lead to issues when included code uses 'g' as a type or parameter name (like protobuf 3.7 does). As such, for now, we have to make this our last include.
#include "Global.h"
// We have to use a global 'diagnostic ignored' pragmas because
// we still support old versions of GCC. (FreeBSD 9.3 ships with GCC 4.2)
#if defined (__GNUC__)
// ScreenCount(...) and so on are macros that access the private structure and
// cast their return value using old-style-casts. Hence we suppress these warnings
// for this section of code.
# pragma GCC diagnostic ignored "-Wold-style-cast"
// XKeycodeToKeysym is deprecated.
// For backwards compatibility reasons we want to keep using the
// old function as long as possible. The replacement function
// XkbKeycodeToKeysym requires the XKB extension which isn't
// guaranteed to be present.
# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
/**
* Returns a platform specific GlobalShortcutEngine object.
*
* @see GlobalShortcutX
* @see GlobalShortcutMac
* @see GlobalShortcutWin
*/
GlobalShortcutEngine *GlobalShortcutEngine::platformInit() {
return new GlobalShortcutX();
}
GlobalShortcutX::GlobalShortcutX() {
iXIopcode = -1;
bRunning = false;
display = XOpenDisplay(NULL);
if (! display) {
qWarning("GlobalShortcutX: Unable to open dedicated display connection.");
return;
}
#ifdef Q_OS_LINUX
if (g.s.bEnableEvdev) {
QString dir = QLatin1String("/dev/input");
QFileSystemWatcher *fsw = new QFileSystemWatcher(QStringList(dir), this);
connect(fsw, SIGNAL(directoryChanged(const QString &)), this, SLOT(directoryChanged(const QString &)));
directoryChanged(dir);
if (qsKeyboards.isEmpty()) {
foreach(QFile *f, qmInputDevices)
delete f;
qmInputDevices.clear();
delete fsw;
qWarning("GlobalShortcutX: Unable to open any keyboard input devices under /dev/input, falling back to XInput");
} else {
return;
}
}
#endif
for (int i=0; i < ScreenCount(display); ++i)
qsRootWindows.insert(RootWindow(display, i));
#ifndef NO_XINPUT2
int evt, error;
if (g.s.bEnableXInput2 && XQueryExtension(display, "XInputExtension", &iXIopcode, &evt, &error)) {
int major = XI_2_Major;
int minor = XI_2_Minor;
int rc = XIQueryVersion(display, &major, &minor);
if (rc != BadRequest) {
qWarning("GlobalShortcutX: Using XI2 %d.%d", major, minor);
queryXIMasterList();
XIEventMask evmask;
unsigned char mask[(XI_LASTEVENT + 7)/8];
memset(&evmask, 0, sizeof(evmask));
memset(mask, 0, sizeof(mask));
XISetMask(mask, XI_RawButtonPress);
XISetMask(mask, XI_RawButtonRelease);
XISetMask(mask, XI_RawKeyPress);
XISetMask(mask, XI_RawKeyRelease);
XISetMask(mask, XI_HierarchyChanged);
evmask.deviceid = XIAllDevices;
evmask.mask_len = sizeof(mask);
evmask.mask = mask;
foreach(Window w, qsRootWindows)
XISelectEvents(display, w, &evmask, 1);
XFlush(display);
connect(new QSocketNotifier(ConnectionNumber(display), QSocketNotifier::Read, this), SIGNAL(activated(int)), this, SLOT(displayReadyRead(int)));
return;
}
}
#endif
qWarning("GlobalShortcutX: No XInput support, falling back to polled input. This wastes a lot of CPU resources, so please enable one of the other methods.");
bRunning=true;
start(QThread::TimeCriticalPriority);
}
GlobalShortcutX::~GlobalShortcutX() {
bRunning = false;
wait();
if (display)
XCloseDisplay(display);
}
// Tight loop polling
void GlobalShortcutX::run() {
Window root = XDefaultRootWindow(display);
Window root_ret, child_ret;
int root_x, root_y;
int win_x, win_y;
unsigned int mask[2];
int idx = 0;
int next = 0;
char keys[2][32];
memset(keys[0], 0, 32);
memset(keys[1], 0, 32);
mask[0] = mask[1] = 0;
while (bRunning) {
if (bNeedRemap)
remap();
msleep(10);
idx = next;
next = idx ^ 1;
if (XQueryPointer(display, root, &root_ret, &child_ret, &root_x, &root_y, &win_x, &win_y, &mask[next]) && XQueryKeymap(display, keys[next])) {
for (int i=0;i<256;++i) {
int index = i / 8;
int keymask = 1 << (i % 8);
bool oldstate = (keys[idx][index] & keymask) != 0;
bool newstate = (keys[next][index] & keymask) != 0;
if (oldstate != newstate) {
handleButton(i, newstate);
}
}
for (int i=8;i<=12;++i) {
bool oldstate = (mask[idx] & (1 << i)) != 0;
bool newstate = (mask[next] & (1 << i)) != 0;
if (oldstate != newstate) {
handleButton(0x110 + i, newstate);
}
}
}
}
}
// Find XI2 master devices so they can be ignored.
void GlobalShortcutX::queryXIMasterList() {
#ifndef NO_XINPUT2
XIDeviceInfo *info, *dev;
int ndevices;
qsMasterDevices.clear();
dev = info = XIQueryDevice(display, XIAllDevices, &ndevices);
for (int i=0;i<ndevices;++i) {
switch (dev->use) {
case XIMasterPointer:
case XIMasterKeyboard:
qsMasterDevices.insert(dev->deviceid);
break;
default:
break;
}
++dev;
}
XIFreeDeviceInfo(info);
#endif
}
// XInput2 event is ready on socketnotifier.
void GlobalShortcutX::displayReadyRead(int) {
#ifndef NO_XINPUT2
XEvent evt;
if (bNeedRemap)
remap();
while (XPending(display)) {
XNextEvent(display, &evt);
XGenericEventCookie *cookie = & evt.xcookie;
if ((cookie->type != GenericEvent) || (cookie->extension != iXIopcode) || !XGetEventData(display, cookie))
continue;
XIDeviceEvent *xide = reinterpret_cast<XIDeviceEvent *>(cookie->data);
switch (cookie->evtype) {
case XI_RawKeyPress:
case XI_RawKeyRelease:
if (! qsMasterDevices.contains(xide->deviceid))
handleButton(xide->detail, cookie->evtype == XI_RawKeyPress);
break;
case XI_RawButtonPress:
case XI_RawButtonRelease:
if (! qsMasterDevices.contains(xide->deviceid))
handleButton(xide->detail + 0x117, cookie->evtype == XI_RawButtonPress);
break;
case XI_HierarchyChanged:
queryXIMasterList();
}
XFreeEventData(display, cookie);
}
#endif
}
// One of the raw /dev/input devices has ready input
void GlobalShortcutX::inputReadyRead(int) {
#ifdef Q_OS_LINUX
if (!g.s.bEnableEvdev) {
return;
}
struct input_event ev;
if (bNeedRemap)
remap();
QFile *f=qobject_cast<QFile *>(sender()->parent());
if (!f)
return;
bool found = false;
while (f->read(reinterpret_cast<char *>(&ev), sizeof(ev)) == sizeof(ev)) {
found = true;
if (ev.type != EV_KEY)
continue;
bool down;
switch (ev.value) {
case 0:
down = false;
break;
case 1:
down = true;
break;
default:
continue;
}
int evtcode = ev.code + 8;
handleButton(evtcode, down);
}
if (! found) {
int fd = f->handle();
int version = 0;
if ((ioctl(fd, EVIOCGVERSION, &version) < 0) || (((version >> 16) & 0xFF) < 1)) {
qWarning("GlobalShortcutX: Removing dead input device %s", qPrintable(f->fileName()));
qmInputDevices.remove(f->fileName());
qsKeyboards.remove(f->fileName());
delete f;
}
}
#endif
}
#define test_bit(bit, array) (array[bit/8] & (1<<(bit%8)))
// The /dev/input directory changed
void GlobalShortcutX::directoryChanged(const QString &dir) {
#ifdef Q_OS_LINUX
if (!g.s.bEnableEvdev) {
return;
}
QDir d(dir, QLatin1String("event*"), 0, QDir::System);
foreach(QFileInfo fi, d.entryInfoList()) {
QString path = fi.absoluteFilePath();
if (! qmInputDevices.contains(path)) {
QFile *f = new QFile(path, this);
if (f->open(QIODevice::ReadOnly)) {
int fd = f->handle();
int version;
char name[256];
uint8_t events[EV_MAX/8 + 1];
memset(events, 0, sizeof(events));
if ((ioctl(fd, EVIOCGVERSION, &version) >= 0) && (ioctl(fd, EVIOCGNAME(sizeof(name)), name)>=0) && (ioctl(fd, EVIOCGBIT(0,sizeof(events)), &events) >= 0) && test_bit(EV_KEY, events) && (((version >> 16) & 0xFF) > 0)) {
name[255]=0;
qWarning("GlobalShortcutX: %s: %s", qPrintable(f->fileName()), name);
// Is it grabbed by someone else?
if ((ioctl(fd, EVIOCGRAB, 1) < 0)) {
qWarning("GlobalShortcutX: Device exclusively grabbed by someone else (X11 using exclusive-mode evdev?)");
delete f;
} else {
ioctl(fd, EVIOCGRAB, 0);
uint8_t keys[KEY_MAX/8 + 1];
if ((ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keys)), &keys) >= 0) && test_bit(KEY_SPACE, keys))
qsKeyboards.insert(f->fileName());
fcntl(f->handle(), F_SETFL, O_NONBLOCK);
connect(new QSocketNotifier(f->handle(), QSocketNotifier::Read, f), SIGNAL(activated(int)), this, SLOT(inputReadyRead(int)));
qmInputDevices.insert(f->fileName(), f);
}
} else {
delete f;
}
} else {
delete f;
}
}
}
#else
Q_UNUSED(dir);
#endif
}
QString GlobalShortcutX::buttonName(const QVariant &v) {
bool ok;
unsigned int key=v.toUInt(&ok);
if (!ok)
return QString();
if ((key < 0x118) || (key >= 0x128)) {
// For backwards compatibility reasons we want to keep using the
// old function as long as possible. The replacement function
// XkbKeycodeToKeysym requires the XKB extension which isn't
// guaranteed to be present.
KeySym ks=XKeycodeToKeysym(display, static_cast<KeyCode>(key), 0);
if (ks == NoSymbol) {
return QLatin1String("0x")+QString::number(key,16);
} else {
const char *str=XKeysymToString(ks);
if (*str == '\0') {
return QLatin1String("KS0x")+QString::number(ks, 16);
} else {
return QLatin1String(str);
}
}
} else {
return tr("Mouse %1").arg(key-0x118);
}
}
|