101 lines
3.5 KiB
Markdown
101 lines
3.5 KiB
Markdown
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## Usage
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[Read here.](https://github.com/lcpz/lain/wiki/Widgets#usage)
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### Description
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Shows the remaining time and percentage capacity of your laptop battery, as well
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as the current wattage. Multiple batteries are supported.
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Displays a notification when battery is fully charged, low, or critical.
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```lua
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local mybattery = lain.widget.bat()
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```
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## Input table
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Variable | Meaning | Type | Default
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--- | --- | --- | ---
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`timeout` | Refresh timeout (in seconds) | integer | 30
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`pspath` | Power supply directory path | string | "/sys/class/power_supply/"
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`battery` | Single battery id | string | autodetected
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`batteries` | Multiple batteries id table | table of strings | autodetected
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`ac` | AC | string | autodetected
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`notify` | Show notification popups | string | "on"
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`full_notify` | Show a notification popup when the battery's fully charged | string | inherited value from `notify`
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`n_perc` | Percentages assumed for critical and low battery levels | table of integers | `{5, 15}`
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`settings` | User settings | function | empty function
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The widget will try to autodetect `battery`, `batteries` and `ac`. If something
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goes wrong, you will have to define them manually. In that case, you only have
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to define one between `battery` and `batteries`. If you have one battery, you
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can either use `args.battery = "BAT*"` or `args.batteries = {"BAT*"}`, where `BAT*`
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is the identifier of your battery in `pspath` (do not use it as a wildcard).
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Of course, if you have multiple batteries, you need to use the latter option.
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To disable notifications, set `notify` to `"off"`.
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If you define `pspath`, **be sure** to not forget the final slash (/).
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`settings` can use the `bat_now` table, which contains the following strings:
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- `status`, general status ("N/A", "Discharging", "Charging", "Full");
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- `n_status[i]`, i-th battery status (like above);
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- `ac_status`, AC-plug flag (0 if cable is unplugged, 1 if plugged, "N/A" otherwise);
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- `perc`, total charge percentage (integer between 0 and 100 or "N/A");
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- `n_perc[i]`, i-th battery charge percentage (like above);
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- `time`, time remaining until charge if charging, until discharge if discharging (HH:MM string or "N/A");
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- `watt`, battery watts (float with 2 decimals).
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and can modify the following three tables, which will be the preset for the naughty notifications:
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* `bat_notification_charged_preset` (used if battery is fully charged and connected to AC)
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* `bat_notification_low_preset` (used if battery charge level <= 15)
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* `bat_notification_critical_preset` (used if battery charge level <= 5)
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Check [here](https://awesomewm.org/doc/api/libraries/naughty.html#notify) for
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the list of variables they can contain. Default definitions:
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```lua
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bat_notification_charged_preset = {
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title = "Battery full",
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text = "You can unplug the cable",
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timeout = 15,
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fg = "#202020",
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bg = "#CDCDCD"
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}
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```
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```lua
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bat_notification_low_preset = {
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title = "Battery low",
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text = "Plug the cable!",
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timeout = 15,
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fg = "#202020",
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bg = "#CDCDCD"
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}
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```
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```lua
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bat_notification_critical_preset = {
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title = "Battery exhausted",
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text = "Shutdown imminent",
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timeout = 15,
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fg = "#000000",
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bg = "#FFFFFF"
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}
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```
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## Output table
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Variable | Meaning | Type
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--- | --- | ---
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`widget` | The widget | `wibox.widget.textbox`
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`update` | Update `widget` | function
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The `update` function can be used to refresh the widget before `timeout` expires.
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## Note
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Alternatively, you can try the [`upower` recipe](https://awesomewm.org/recipes/watch).
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