slstatus

status monitor
git clone git://git.suckless.org/slstatus
Log | Files | Refs | README | LICENSE

commit 37724ac2c3f496f4736223d0d8e5d8fecb933590
parent cbbf59fd3dde3f7cfbdc9807da5f5f42b664cf49
Author: David Demelier <markand@malikania.fr>
Date:   Tue, 22 May 2018 09:23:29 +0200

Add basic backlight percentage support

At the moment linux only, but will add support for OpenBSD as well.

Diffstat:
Makefile | 1+
README | 1+
components/backlight.c | 32++++++++++++++++++++++++++++++++
config.def.h | 2++
slstatus.h | 3+++
util.h | 2++
6 files changed, 41 insertions(+), 0 deletions(-)

diff --git a/Makefile b/Makefile @@ -6,6 +6,7 @@ include config.mk REQ = util COM =\ + components/backlight\ components/battery\ components/cpu\ components/datetime\ diff --git a/README b/README @@ -6,6 +6,7 @@ slstatus is a suckless status monitor for window managers that use WM_NAME Features -------- +- Backlight percentage - Battery percentage/state/time left - CPU usage - CPU frequency diff --git a/components/backlight.c b/components/backlight.c @@ -0,0 +1,32 @@ +/* See LICENSE file for copyright and license details. */ +#include "../util.h" + +#if defined(__linux__) + #include <limits.h> + + #define BRIGHTNESS_MAX "/sys/class/backlight/%s/max_brightness" + #define BRIGHTNESS_CUR "/sys/class/backlight/%s/brightness" + + const char * + backlight_perc(const char *card) + { + char path[PATH_MAX]; + int max, cur; + + if (esnprintf(path, sizeof (path), BRIGHTNESS_MAX, card) < 0 || + pscanf(path, "%d", &max) != 1) { + return NULL; + } + + if (esnprintf(path, sizeof (path), BRIGHTNESS_CUR, card) < 0 || + pscanf(path, "%d", &cur) != 1) { + return NULL; + } + + if (max == 0) { + return NULL; + } + + return bprintf("%d", cur * 100 / max); + } +#endif diff --git a/config.def.h b/config.def.h @@ -12,6 +12,8 @@ static const char unknown_str[] = "n/a"; /* * function description argument (example) * + * backlight_perc backlight percentage device name + * (intel_backlight) * battery_perc battery percentage battery name (BAT0) * NULL on OpenBSD * battery_state battery charging state battery name (BAT0) diff --git a/slstatus.h b/slstatus.h @@ -1,5 +1,8 @@ /* See LICENSE file for copyright and license details. */ +/* backlight */ +const char *backlight_perc(const char *); + /* battery */ const char *battery_perc(const char *); const char *battery_state(const char *); diff --git a/util.h b/util.h @@ -1,4 +1,6 @@ /* See LICENSE file for copyright and license details. */ +#include <stddef.h> + extern char buf[1024]; #define LEN(x) (sizeof (x) / sizeof *(x))