lightweight X11 utility to dim the screen and/or keyboard backlight when idle
Add a -K option to only watch for keyboard input to reset idle
Use XInput to list devices and find the master keyboard device id,
then find the corresponding "DEVICEIDLETIME #" idle timer to listen
to instead of the global IDLETIME timer.
+48
-9
+1
-1
Makefile
+1
-1
Makefile
+4
-1
xdimmer.1
+4
-1
xdimmer.1
···
1
-
.Dd $Mdocdate: August 27 2019$
1
+
.Dd $Mdocdate: January 18 2024$
2
2
.Dt XDIMMER 1
3
3
.Os
4
4
.Sh NAME
···
10
10
.Op Fl a
11
11
.Op Fl b Ar brighten steps
12
12
.Op Fl d
13
+
.Op Fl K
13
14
.Op Fl k
14
15
.Op Fl n
15
16
.Op Fl p Ar percent
···
58
59
steps.
59
60
.It Fl d
60
61
Print debugging messages to stdout.
62
+
.It Fl K
63
+
Only listen for keyboard input when resetting the idle timer.
61
64
.It Fl k
62
65
Affect the keyboard backlight as well as the screen backlight.
63
66
Currently only supported on OpenBSD.
+43
-7
xdimmer.c
+43
-7
xdimmer.c
···
61
61
#include <X11/Xlib.h>
62
62
#include <X11/extensions/sync.h>
63
63
#include <X11/extensions/Xrandr.h>
64
+
#include <X11/extensions/XInput.h>
65
+
#include <X11/extensions/XInput2.h>
64
66
65
67
#define DEFAULT_DIM_TIMEOUT 120
66
68
#define DEFAULT_DIM_PERCENTAGE 10
···
120
122
static int dimmed = 0;
121
123
static int dim_screen = 1;
122
124
static int use_als = 0;
125
+
static int kbd_idle_only = 0;
123
126
124
127
/* ALS reading */
125
128
static float als = -1;
···
154
157
{
155
158
int ch;
156
159
157
-
while ((ch = getopt(argc, argv, "ab:dknp:s:t:")) != -1) {
160
+
while ((ch = getopt(argc, argv, "ab:dkKnp:s:t:")) != -1) {
158
161
const char *errstr;
159
162
160
163
switch (ch) {
···
180
183
#endif
181
184
dim_kbd = 1;
182
185
break;
186
+
case 'K':
187
+
kbd_idle_only = 1;
188
+
break;
183
189
case 'n':
184
190
dim_screen = 0;
185
191
break;
···
189
195
errx(2, "dim percentage: %s", errstr);
190
196
break;
191
197
case 's':
192
-
dim_steps = strtonum(optarg, 1, 100, &errstr);
198
+
dim_steps = strtonum(optarg, 1, 500, &errstr);
193
199
if (errstr)
194
200
errx(2, "dim steps: %s", errstr);
195
201
break;
···
241
247
dim_timeout));
242
248
if (use_als)
243
249
DPRINTF(("automatically updating brightness from ALS\n"));
250
+
if (kbd_idle_only)
251
+
DPRINTF(("only watching idle state of keyboard\n"));
244
252
245
253
signal(SIGINT, bail);
246
254
signal(SIGTERM, bail);
···
261
269
XSyncSystemCounter *counters;
262
270
XSyncAlarm idle_alarm = None;
263
271
XSyncAlarm reset_alarm = None;
272
+
XIDeviceInfo *xinfo;
273
+
char masdname[25];
264
274
int sync_event, error;
265
-
int major, minor, ncounters;
266
-
int i;
275
+
int major, minor, ncounters, ndevices;
276
+
int i, j;
267
277
268
278
if (XSyncQueryExtension(dpy, &sync_event, &error) != True)
269
279
errx(1, "no sync extension available");
270
280
271
281
XSyncInitialize(dpy, &major, &minor);
272
282
283
+
if (kbd_idle_only) {
284
+
xinfo = XIQueryDevice(dpy, XIAllDevices, &ndevices);
285
+
masdname[0] = '\0';
286
+
for (j = 0; j < ndevices; j++) {
287
+
if (xinfo[j].use != XIMasterKeyboard)
288
+
continue;
289
+
290
+
snprintf(masdname, sizeof(masdname),
291
+
"DEVICEIDLETIME %d", xinfo[j].deviceid);
292
+
break;
293
+
}
294
+
if (masdname[0] == '\0')
295
+
errx(1, "no xinput master keyboard device found");
296
+
}
297
+
273
298
counters = XSyncListSystemCounters(dpy, &ncounters);
274
299
for (i = 0; i < ncounters; i++) {
275
-
if (!strcmp(counters[i].name, "IDLETIME")) {
276
-
idler_counter = counters[i].counter;
277
-
break;
300
+
if (kbd_idle_only) {
301
+
if (strcmp(counters[i].name, masdname) == 0) {
302
+
DPRINTF(("using idle time of %s\n",
303
+
counters[i].name));
304
+
idler_counter = counters[i].counter;
305
+
break;
306
+
}
307
+
} else {
308
+
if (strcmp(counters[i].name, "IDLETIME") == 0) {
309
+
idler_counter = counters[i].counter;
310
+
break;
311
+
}
278
312
}
279
313
}
280
314
XSyncFreeSystemCounterList(counters);
315
+
if (kbd_idle_only)
316
+
XIFreeDeviceInfo(xinfo);
281
317
282
318
if (!idler_counter)
283
319
errx(1, "no idle counter");