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calculate a quick and dirty time remaining value

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This commit is contained in:
Richard Hughes 2008-07-25 17:30:58 +01:00
parent d7447437dd
commit fccd159c73
1 changed files with 30 additions and 0 deletions
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30
src/devkit-power-source.c
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@ -656,6 +656,18 @@ update_battery (DevkitPowerSource *source)
is_charging = strcasecmp (status, "charging") == 0;
is_discharging = strcasecmp (status, "discharging") == 0;
/* really broken battery, assume charging */
if (is_charging && is_discharging)
is_discharging = FALSE;
/* reset the time, as we really can't guess this without profiling */
if (is_charging) {
source->priv->battery_time_to_empty = -1;
}
if (is_discharging) {
source->priv->battery_time_to_full = -1;
}
source->priv->battery_energy =
sysfs_get_double (source->priv->native_path, "energy_now") / 1000000.0;
source->priv->battery_energy_rate =
@ -676,6 +688,24 @@ update_battery (DevkitPowerSource *source)
if (source->priv->battery_percentage > 100.0)
source->priv->battery_percentage = 100.0;
/* calculate a quick and dirty time remaining value */
if (source->priv->battery_energy_rate > 0) {
if (is_discharging) {
source->priv->battery_time_to_empty = 3600 * (source->priv->battery_energy /
source->priv->battery_energy_rate);
} else if (is_charging) {
source->priv->battery_time_to_full = 3600 *
((source->priv->battery_energy_full - source->priv->battery_energy) /
source->priv->battery_energy_rate);
}
}
/* check the remaining time is under a set limit, to deal with broken
primary batteries rate */
if (source->priv->battery_time_to_empty > (100 * 60 * 60))
source->priv->battery_time_to_empty = -1;
if (source->priv->battery_time_to_full > (100 * 60 * 60))
source->priv->battery_time_to_full = -1;
/* get the state */
if (is_charging)
source->priv->battery_state = DEVKIT_POWER_STATE_CHARGING;