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
|
/* test-xdpms.c --- playing with the XDPMS extension.
* xscreensaver, Copyright (c) 1998-2011 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Intrinsic.h>
#include <X11/Xproto.h>
#include <X11/extensions/dpms.h>
#include <X11/extensions/dpmsstr.h>
extern Bool DPMSQueryExtension (Display *dpy, int *event_ret, int *error_ret);
extern Bool DPMSCapable (Display *dpy);
extern Status DPMSForceLevel (Display *dpy, CARD16 level);
extern Status DPMSInfo (Display *dpy, CARD16 *power_level, BOOL *state);
extern Status DPMSGetVersion (Display *dpy, int *major_ret, int *minor_ret);
extern Status DPMSSetTimeouts (Display *dpy,
CARD16 standby, CARD16 suspend, CARD16 off);
extern Bool DPMSGetTimeouts (Display *dpy,
CARD16 *standby, CARD16 *suspend, CARD16 *off);
extern Status DPMSEnable (Display *dpy);
extern Status DPMSDisable (Display *dpy);
char *progname = 0;
char *progclass = "XScreenSaver";
static const char *
blurb (void)
{
static char buf[255];
time_t now = time ((time_t *) 0);
char *ct = (char *) ctime (&now);
int n = strlen(progname);
if (n > 100) n = 99;
strncpy(buf, progname, n);
buf[n++] = ':';
buf[n++] = ' ';
strncpy(buf+n, ct+11, 8);
strcpy(buf+n+9, ": ");
return buf;
}
static Bool error_handler_hit_p = False;
static int
ignore_all_errors_ehandler (Display *dpy, XErrorEvent *error)
{
error_handler_hit_p = True;
return 0;
}
int
main (int argc, char **argv)
{
int delay = 10;
int event_number, error_number;
int major, minor;
CARD16 standby, suspend, off;
CARD16 state;
BOOL onoff;
XtAppContext app;
Widget toplevel_shell = XtAppInitialize (&app, progclass, 0, 0,
&argc, argv, 0, 0, 0);
Display *dpy = XtDisplay (toplevel_shell);
XtGetApplicationNameAndClass (dpy, &progname, &progclass);
if (!DPMSQueryExtension(dpy, &event_number, &error_number))
{
fprintf(stderr, "%s: DPMSQueryExtension(dpy, ...) ==> False\n",
blurb());
fprintf(stderr, "%s: server does not support the XDPMS extension.\n",
blurb());
exit(1);
}
else
fprintf(stderr, "%s: DPMSQueryExtension(dpy, ...) ==> %d, %d\n", blurb(),
event_number, error_number);
if (!DPMSCapable(dpy))
{
fprintf(stderr, "%s: DPMSCapable(dpy) ==> False\n", blurb());
fprintf(stderr, "%s: server says hardware doesn't support DPMS.\n",
blurb());
exit(1);
}
else
fprintf(stderr, "%s: DPMSCapable(dpy) ==> True\n", blurb());
if (!DPMSGetVersion(dpy, &major, &minor))
{
fprintf(stderr, "%s: DPMSGetVersion(dpy, ...) ==> False\n", blurb());
fprintf(stderr, "%s: server didn't report XDPMS version numbers?\n",
blurb());
}
else
fprintf(stderr, "%s: DPMSGetVersion(dpy, ...) ==> %d, %d\n", blurb(),
major, minor);
if (!DPMSGetTimeouts(dpy, &standby, &suspend, &off))
{
fprintf(stderr, "%s: DPMSGetTimeouts(dpy, ...) ==> False\n", blurb());
fprintf(stderr, "%s: server didn't report DPMS timeouts?\n", blurb());
}
else
fprintf(stderr,
"%s: DPMSGetTimeouts(dpy, ...)\n"
"\t ==> standby = %d, suspend = %d, off = %d\n",
blurb(), standby, suspend, off);
while (1)
{
if (!DPMSInfo(dpy, &state, &onoff))
{
fprintf(stderr, "%s: DPMSInfo(dpy, ...) ==> False\n", blurb());
fprintf(stderr, "%s: couldn't read DPMS state?\n", blurb());
onoff = 0;
state = -1;
}
else
{
fprintf(stderr, "%s: DPMSInfo(dpy, ...) ==> %s, %s\n", blurb(),
(state == DPMSModeOn ? "DPMSModeOn" :
state == DPMSModeStandby ? "DPMSModeStandby" :
state == DPMSModeSuspend ? "DPMSModeSuspend" :
state == DPMSModeOff ? "DPMSModeOff" : "???"),
(onoff == 1 ? "On" : onoff == 0 ? "Off" : "???"));
}
if (state == DPMSModeStandby ||
state == DPMSModeSuspend ||
state == DPMSModeOff)
{
XErrorHandler old_handler;
int st;
fprintf(stderr, "%s: monitor is off; turning it on.\n", blurb());
XSync (dpy, False);
error_handler_hit_p = False;
old_handler = XSetErrorHandler (ignore_all_errors_ehandler);
XSync (dpy, False);
st = DPMSForceLevel (dpy, DPMSModeOn);
XSync (dpy, False);
if (error_handler_hit_p) st = -666;
fprintf (stderr, "%s: DPMSForceLevel (dpy, DPMSModeOn) ==> %s\n",
blurb(), (st == -666 ? "X Error" : st ? "Ok" : "Error"));
}
sleep (delay);
}
}
|
