Big powerpill added to my XMonad and XMobar.

1 files changed, 226 insertions, 0 deletions

diff --git a/xmobar/extras/battery/battery.c b/xmobar/extras/battery/battery.c
new file mode 100644
index 0000000..8e5e58e
--- /dev/null
+++ b/xmobar/extras/battery/battery.c
@@ -0,0 +1,226 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <math.h>
+
+#define N_ICONS 5
+
+char* icons[] = {
+  "",
+  "",
+  "",
+  "",
+  "",
+  "",
+  "",
+  "",
+  "",
+  "",
+  "",
+  "",
+};
+
+typedef long long llong_t;
+
+llong_t get_number(const char* file)
+{
+  int fd;
+  char buf[128];
+  fd = open(file, O_RDONLY);
+
+  if (fd < 0) {
+    return -1;
+  }
+
+  size_t count = read(fd, buf, sizeof(buf));
+  close(fd);
+
+  if (count < 0 || count > sizeof(buf) - 1) {
+    return -1;
+  }
+
+  buf[count] = 0;
+  return atoll(buf);
+}
+
+float absf(float f)
+{
+  return f < 0 ? -f : f;
+}
+
+uint32_t hsv_to_rgb(int h, int s, int v){
+  if(h > 360 || h < 0 || s > 100 || s < 0 || v > 100 || v < 0){
+    return -1;
+  }
+
+  float sf = s / 100.0;
+  float vf = v / 100.0;
+  float hf = (float) h;
+
+  float c = sf * vf;
+  float x = c * (1 - absf(fmod(hf / 60.0, 2) - 1));
+  float m = vf - c;
+  float r,g,b;
+
+  if(h >= 0 && h < 60){
+    r = c;
+    g = x;
+    b = 0;
+  }
+  else if(h >= 60 && h < 120){
+    r = x;
+    g = c;
+    b = 0;
+  }
+  else if(h >= 120 && h < 180){
+    r = 0;
+    g = c;
+    b = x;
+  }
+  else if(h >= 180 && h < 240){
+    r = 0;
+    g = x;
+    b = c;
+  }
+  else if(h >= 240 && h < 300){
+    r = x;
+    g = 0;
+    b = c;
+  }
+  else{
+    r = c;
+    g = 0;
+    b = x;
+  }
+
+  int ri = (int) ((r + m) * 255);
+  int gi = (int) ((g + m) * 255);
+  int bi = (int) ((b + m) * 255);
+
+  return (ri << 16) | (gi << 8) | bi;
+}
+
+llong_t get_capacity()
+{
+  return get_number("/sys/class/power_supply/BAT0/capacity");
+}
+
+llong_t get_energy_full()
+{
+  return get_number("/sys/class/power_supply/BAT0/energy_full");
+}
+
+llong_t get_energy_now()
+{
+  return get_number("/sys/class/power_supply/BAT0/energy_now");
+}
+
+llong_t get_ac_online()
+{
+  return get_number("/sys/class/power_supply/AC/online");
+}
+
+llong_t get_power()
+{
+  return get_number("/sys/class/power_supply/BAT0/power_now");
+}
+
+int get_status(char* buf, size_t size)
+{
+  int fd;
+  fd = open("/sys/class/power_supply/BAT0/status", O_RDONLY);
+
+  if (fd < 0) {
+    return 1;
+  }
+
+  size_t count = read(fd, buf, size);
+  close(fd);
+
+  if (count < 0 || count > size - 1) {
+    return 1;
+  }
+
+  buf[count] = 0;
+  --count;
+  while (count > 0 && buf[count] == '\n') {
+    buf[count --] = 0;
+  }
+
+  return 0;
+}
+
+uint32_t percentage_to_color(int percentage)
+{
+  int h = 135 * percentage / 100; 
+  int s = 81;
+  int v = 76;
+
+  return hsv_to_rgb(h, s, v);
+}
+
+void get_time_left(char* buf, size_t sz, llong_t energy, llong_t power)
+{
+  llong_t minutes_left = energy * 60 / power;
+
+  llong_t hours = minutes_left / 60;
+  llong_t minutes = minutes_left % 60;
+
+  snprintf(buf, sz - 1, "%2lluh%2llum", hours, minutes);
+  buf[sz - 1] = 0;
+}
+
+int main(int argc, char** argv)
+{
+  char* icon;
+  char timeleft[128];
+
+  llong_t capacity;
+  llong_t energy_now;
+  llong_t ac_online;
+  llong_t power;
+
+  if ((energy_now = get_energy_now()) < 0) {
+    fprintf(stderr, "Unable to get current energy.");
+    goto fail;
+  }
+
+  if ((capacity = get_capacity()) < 0) {
+    fprintf(stderr, "Unable to get capacity.");
+    goto fail;
+  }
+
+  if ((ac_online = get_ac_online()) < 0) {
+    fprintf(stderr, "Unable to get status.");
+    goto fail;
+  }
+
+  if ((power = get_power()) < 0) {
+    fprintf(stderr, "Unable toget power.");
+    goto fail;
+  }
+  
+  ac_online = !! ac_online;
+
+  int percentage = (int) capacity;
+  if (percentage >= 100) {
+    icon = icons[10 + ac_online];
+  } else {
+    int quintile = percentage / 20;
+    icon = icons[quintile + (5 * ac_online) ];
+  }
+
+  get_time_left(timeleft, sizeof(timeleft), energy_now, power);
+
+  double dpower = power / 1000000.0;
+  uint32_t color = percentage_to_color(percentage);
+  printf("<fc=#%06x>%s </fc><fc=#8888ff>%d%% %2.1fW %s</fc>", color, icon, percentage, dpower, timeleft);
+  return 0;
+
+fail:
+  printf("");
+  return 0;
+}