56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#include "xbrightness.h"
|
|
|
|
static void cmd(char *command, char *output) {
|
|
FILE *fp = popen(command, "r");
|
|
|
|
if (fp == NULL) {
|
|
output[0] = 0;
|
|
} else {
|
|
fgets(output, sizeof(output), fp);
|
|
pclose(fp);
|
|
|
|
if (output && output[strlen(output)-1] == '\n') {
|
|
output[strlen(output)-1] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
float current() {
|
|
char out[BUFFER];
|
|
cmd("xrandr --verbose | grep Brightness: | cut -f2 -d\" \"", out);
|
|
return strtof(out, NULL);
|
|
}
|
|
|
|
void set(float brightness) {
|
|
char screenName[64], b[4], command[BUFFER] = "xrandr --output ";
|
|
cmd("xrandr | grep \" connected\" | cut -f1 -d\" \"", screenName);
|
|
strcat(strcat(strcat(command, screenName), " --brightness "), gcvt(brightness, 3, b));
|
|
cmd(command, NULL); //TODO: Catch output error
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
if (argc == 1) {
|
|
printf("Current: %.2f\n", current());
|
|
return 0;
|
|
} else if (argc > 2) {
|
|
printf("Too many arguments !\n");
|
|
return 1;
|
|
}
|
|
|
|
char *entPrt;
|
|
float b = strtof(argv[1], &entPrt);
|
|
if (*entPrt != '\0') {
|
|
printf("Invalid brightness level !\n");
|
|
return 1;
|
|
} else {
|
|
if (argv[1][0] == '+' ||argv[1][0] == '-') {
|
|
b = current()+b;
|
|
set(b);
|
|
} else {
|
|
set(b);
|
|
}
|
|
printf("Brightness set to %.2f\n", b);
|
|
}
|
|
return 0;
|
|
}
|