Add screen brightness module

Though it's only for Unix likes... I really wanna support BSDs next time.

1 files changed, 42 insertions, 0 deletions

diff --git a/scrbr.c b/scrbr.c
new file mode 100644
index 0000000..398a414
--- /dev/null
+++ b/scrbr.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "block.h"
+#define ICON_BR "󰳲 "
+#define FG "#222222"
+#define BG "#dfb24999"
+#define BDIR "/sys/class/backlight/amdgpu_bl1"
+#define BMAXF max_brightness_f
+#define BCURF current_brightness_f
+FILE *BCURF, *BMAXF;
+void scrbr(void)
+{
+	char *buf;
+	unsigned short current_brightness;
+	unsigned short max_brightness;
+	unsigned short size;
+
+	if (!BCURF) BCURF = fopen(BDIR"/brightness","r");
+	if (!BMAXF) BMAXF = fopen(BDIR"/max_brightness","r");
+
+	fseek(BCURF, 0, SEEK_END);
+	fseek(BMAXF, 0, SEEK_END);
+
+	size = ftell(BCURF);
+	buf = malloc(size);
+	rewind(BCURF);
+	fgets(buf, size, BCURF);
+	current_brightness = atoi(buf);
+	free(buf);
+
+	size = ftell(BMAXF);
+	buf = malloc(size);
+	rewind(BMAXF);
+	fgets(buf, size, BMAXF);
+	max_brightness = atoi(buf);
+	free(buf);
+
+	char brightness[10];
+	snprintf(brightness,10,ICON_BR"%3d%%",
+			current_brightness*100/max_brightness);
+	block(brightness,FG,BG,BG);
+}