status

Commit: 6bc72b5404d9e6d77f66c8835b57a83787ab32be
Parent: 9074d06ac54b924b2d24df2b5fb03420563691c8
Author: Randy Palamar
Date:   Fri,  3 Jun 2022 17:26:41 -0600

add a block for printing display brightness in percent

Diffstat:
M
LICENSE
 | 
2
+-
A
blocks/blight_linux.c
 | 
30
++++++++++++++++++++++++++++++
A
blocks/blight_linux.h
 | 
1
+
M
config.def.h
 | 
2
++
M
config.mk
 | 
1
+

5 files changed, 35 insertions(+), 1 deletion(-)
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 ISC License (ISC)
 
-© 2019-2021 Randy Palamar <palamar@ualberta.ca>
+© 2019-2022 Randy Palamar <palamar@ualberta.ca>
 © 2021 Ashish Kumar Yadav
 
 Permission to use, copy, modify, and distribute this software for any
diff --git a/blocks/blight_linux.c b/blocks/blight_linux.c
@@ -0,0 +1,30 @@
+/* See LICENSE for license details. */
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "../status.h"
+#include "../util.h"
+#include "blight_linux.h"
+
+size_t
+blight(struct Block *b)
+{
+	char path[PATH_MAX];
+	int perc;
+	unsigned long max, now;
+
+	snprintf(path, sizeof(path), "/sys/class/backlight/%s/brightness", b->u.s);
+	if (pscanf(path, "%lu", &now) != 1)
+		now = 0;
+
+	snprintf(path, sizeof(path), "/sys/class/backlight/%s/max_brightness", b->u.s);
+	if (pscanf(path, "%lu", &max) != 1)
+		/* avoid divison by 0 */
+		max = 1;
+
+	perc = 100 * now / max;
+	snprintf(buf, sizeof(buf), "%d%%", perc);
+
+	return snprintf(b->curstr, LEN(b->curstr), b->fmt, buf);
+}
diff --git a/blocks/blight_linux.h b/blocks/blight_linux.h
@@ -0,0 +1 @@
+size_t blight(struct Block *);
diff --git a/config.def.h b/config.def.h
@@ -1,4 +1,5 @@
 #include "blocks/battery.h"
+#include "blocks/blight_linux.h"
 #include "blocks/gettime.h"
 #include "blocks/mpd.h"
 #include "blocks/volume.h"
@@ -24,6 +25,7 @@ struct Block blks[] = {
 	{ mpd_tag,   "[ %s ",               0,         1,      { .i = MPD_TAG_ARTIST } },
 	{ mpd_tag,   "- %s ]",              0,         1,      { .i = MPD_TAG_TITLE } },
 	{ batinfo,   "[ %s ]",              30,        0,      { .s = "BAT0" } },
+	{ blight,    "[ %s ]",              0,         3,      { .s = "intel_backlight" } },
 	{ getvol,    "[ %s ]",              0,         2,      { .s = "Speaker" } },
 	{ gettime,   "[ %R ]",              20,        0,      {0} },
 	{ NULL },
diff --git a/config.mk b/config.mk
@@ -1,5 +1,6 @@
 SRC =\
 	blocks/battery.c\
+	blocks/blight_linux.c\
 	blocks/gettime.c\
 	blocks/mpd.c\
 	blocks/volume.c