From c6114c6dad641ea7e1dec230945023864fe1f6e7 Mon Sep 17 00:00:00 2001 From: Malfurious Date: Thu, 1 Jun 2023 16:22:33 -0400 Subject: patch: dpms This patch interacts with the Display Power Management Signaling and automatically turns off the monitor after a configurable time. The monitor is reactivated by a keystroke or moving the mouse. The time until the monitor is disabled is configurable as monitortime in the config.h file in seconds. This is a modified version of the patch from suckless.org which permits normal timeout values of zero. --- config.def.h | 3 +++ slock.c | 20 ++++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/config.def.h b/config.def.h index 3639e91..3420af9 100644 --- a/config.def.h +++ b/config.def.h @@ -14,3 +14,6 @@ static const int failonclear = 1; /* allow control key to trigger fail on clear */ static const int controlkeyclear = 1; + +/* time in seconds before the monitor shuts down */ +static const int monitortime = 7; diff --git a/slock.c b/slock.c index fa21209..8393fd2 100644 --- a/slock.c +++ b/slock.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -324,6 +325,7 @@ main(int argc, char **argv) { const char *hash; Display *dpy; int s, nlocks, nscreens; + CARD16 standby, suspend, off; ARGBEGIN { case 'v': @@ -384,6 +386,20 @@ main(int argc, char **argv) { if (nlocks != nscreens) return 1; + /* DPMS magic to disable the monitor */ + if (!DPMSCapable(dpy)) + die("slock: DPMSCapable failed\n"); + if (!DPMSEnable(dpy)) + die("slock: DPMSEnable failed\n"); + if (!DPMSGetTimeouts(dpy, &standby, &suspend, &off)) + die("slock: DPMSGetTimeouts failed\n"); + //if (!standby || !suspend || !off) + //die("slock: at least one DPMS variable is zero\n"); + if (!DPMSSetTimeouts(dpy, monitortime, monitortime, monitortime)) + die("slock: DPMSSetTimeouts failed\n"); + + XSync(dpy, 0); + /* run post-lock command */ if (argc > 0) { switch (fork()) { @@ -401,5 +417,9 @@ main(int argc, char **argv) { /* everything is now blank. Wait for the correct password */ readpw(dpy, &rr, locks, nscreens, hash); + /* reset DPMS values to inital ones */ + DPMSSetTimeouts(dpy, standby, suspend, off); + XSync(dpy, 0); + return 0; } -- cgit v1.2.3