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Re: a battery monitor

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The original post had a "Followup-To: comp.windows.x" at the end of the
source. I presume that was the intention, so I've trimmed newsgroups.

In comp.windows.x, Johann 'Myrkraverk' Oskarsson wrote:
> On 03/09/2026 5:45 AM, Lawrence D'Oliveiro wrote:
> > On Tue, 01 Sep 2026 14:28:40 -0300, Anton Antimo wrote:
> >> So, yes, xbattery.c (source code below) is able to read the desired
> >> window geometry from the command line (as it's typical of X
> >> programs).

Fun. An obvious improvement would be to allow colors to be set on the
command line, or as XResources, instead of being hard coded. Also maybe
be able to set the color change threshold. I use a solid green
background for my root window. It's not the same shade as your green,
but close enough. An advanced option would be to have a rotation. Tall
or draining right instead of the left. 

When I have needed a standalone battery monitor, I used the system file 
with battery status and displayed a number in Lemonbar:

https://github.com/X11-good-tools/lemonbar

Which works like your tool, taking content on stdin and displaying it,
refreshing when there is a line of input.

And used /proc/acpi/battery/ files for data. It seems that's an older
pattern, and /sys/class/power_supply/ files are used now:

$ cat /sys/class/power_supply/BAT1/status
Charging
$ cat /sys/class/power_supply/BAT1/charge_now 
3673000
$ cat /sys/class/power_supply/BAT1/charge_full
4220000
$ cat /sys/class/power_supply/BAT1/alarm         
420000

The /sys/class/power_supply/BAT1/uevent file exposes most of settings
in a way suitable for eval-ing in a shell script.

$ grep -i charg /sys/class/power_supply/BAT1/uevent
POWER_SUPPLY_STATUS=Charging
POWER_SUPPLY_CHARGE_FULL_DESIGN=4265000
POWER_SUPPLY_CHARGE_FULL=4220000
POWER_SUPPLY_CHARGE_NOW=3673000

>> Instead of writing all that C code, why not using a preexisting
>> GUI utility that can display simple widgets like progress bars,
>> under the control of a shell script?
> Dear Lawrence,
> What kind of /moron/ are you?  Can't you understand that Anton is writ-
> ing his code for his own amusement and education?

Lawrence is the sort of guy who always wants to have a reply.

Elijah
------
does not expect useful replies from Lawrence on a regular basis

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Thread

a battery monitor Anton Antimo <anton@safunu.org> - 2026-09-01 14:28 -0300
  Re: a battery monitor Kragen Javier Sitaker <kragen@canonical.org> - 2026-09-02 00:52 -0300
    Re: a battery monitor Anton Antimo <anton@safunu.org> - 2026-09-02 12:22 -0300
      Re: a battery monitor Anton Antimo <anton@safunu.org> - 2026-09-11 16:58 -0300
  Re: a battery monitor Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-02 21:45 +0000
    Re: a battery monitor Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-03 12:34 +0800
      Re: a battery monitor Eli the Bearded <*@eli.users.panix.com> - 2026-09-03 05:30 +0000
        Re: a battery monitor Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-03 21:24 +0000
          Re: a battery monitor Eli the Bearded <*@eli.users.panix.com> - 2026-09-04 02:51 +0000
    Re: a battery monitor David Brown <david.brown@hesbynett.no> - 2026-09-03 09:28 +0200
      Re: a battery monitor boltar@caprica.universe - 2026-09-03 15:55 +0000
        Re: a battery monitor David Brown <david.brown@hesbynett.no> - 2026-09-04 09:07 +0200
          Re: a battery monitor Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-04 15:14 +0800
          Re: a battery monitor Lane W <cactus_DAC@yahoo.com> - 2026-09-04 05:32 -0600
          Re: a battery monitor scott@slp53.sl.home (Scott Lurndal) - 2026-09-04 14:29 +0000
          Re: a battery monitor Johann 'Myrkraverk' Oskarsson <johann@myrkraverk.invalid> - 2026-09-04 23:17 +0800
            Re: a battery monitor boltar@caprica.universe - 2026-09-05 09:39 +0000
        Re: a battery monitor gazelle@shell.xmission.com (Kenny McCormack) - 2026-09-04 12:05 +0000
  Re: a battery monitor Anton Antimo <anton@safunu.org> - 2026-09-02 18:48 -0300

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