lipc-daemon usage infos and ideas

[Aeris]

Hi there! I'm trying to understand how does lipc-deamon work. If a type lipc-daemon in kterm it says:

lipc-daemon provides a way to execute programs on specified events and a way to run program to publish properties easily

Usage:
lipc-daemon [-e <event-config-file>] [-p <property-confi-file>] [-f]
-f: Do not daemonize

For example you could run: /usr/bin/lipc-daemon -p /etc/lipc-daemon-props.conf -e /etc/lipc-daemon-events.conf, where those files are already present on system (and cointains further infos too). Anyway I don't know what happens if you do :P

I still can't figure out exactly how to use it xD
That's what I would like to do: listen on battery level update events (i.e. when battery loses 1%) and print out somewhere the updated value (my dream would be appening it to current app name in the topbar, even if by now I'm only able to replace it). Do you think is this possibile without consuming resources, maybe using lipc-daemon? I still can't resign myself to not have a battery percentage gauge around the screen ALWAYS xD

Thanks in advance.

[knc1]

Originally Posted by Aeris

I still can't resign myself to not have a battery percentage gauge around the screen ALWAYS xD

There are such things as external battery charger packs.

For example, I have one here with 10x the storage capacity of the Kindle's internal battery and the Kindle sees it as an external charger (which it is).

This model has a tiny back lighted screen which shows the remaining storage capacity.

Do not let your Avatar read the following!

Spoiler:

The one in front of me is 'Pretty Pink' that would match your Avatar's outfit.

[twobob]

subscribe to an event of your choice.
trigger something to happen when it fires.

[twobob]

lipc-daemon isn't the daemon that serves all LIPC communication. It's a wrong assumption. LIPC is a thin abstraction on top of D-Bus. And lipc-daemon uses this abstraction and only exposes properties as com.lab126.system publisher. So it's OK that other publishers are still accessible when lipc-daemon is stopped.

Eureka...

[icantbebothered]

On a touch at least this you could get the battery level like this:

lipc-get-prop com.lab126.powerd battLevel

Doing that every minute or so could be enough to catch all the percentage changes roughly the time they happen.

[twobob]

she was doing that already. but yeah and only print when value updates...

[Aeris]

Originally Posted by icantbebothered

On a touch at least this you could get the battery level like this:

lipc-get-prop com.lab126.powerd battLevel

Doing that every minute or so could be enough to catch all the percentage changes roughly the time they happen.

Thanks to twobob I'm trying to listen on system event BattLevelChange, so I will not have to control the value multiple times

[eureka]

So here is a script to display battery charge as a number (percent) on top of battery icon in top bar (only when not charging and charge is more than 10 percent). It works on KT, but I didn't test it thoroughly, sorry for bugs.

It is a shell script, so copy it to file (for example) script.sh and run it as sh script.sh once after pillow (re)start.

#!/bin/sh
SCRIPT=`cat << 'JAVASCRIPT' | tr -d '\n' | sed -e 's,",\\\\",g'
(function () {
  var _batteryMeterId = BatteryState.batteryFillDiv,
      _batteryMeterEl = _batteryMeterId && document.getElementById(_batteryMeterId),
      _currentBatteryLevel = nativeBridge.getIntLipcProperty("com.lab126.powerd", "battLevel"),
      _originalResolveLabel = BatteryState.resolveLabel;

  if (!_batteryMeterEl || !_originalResolveLabel) {
    return;
  }

  /* Text should be black to be visible. */      
  _batteryMeterEl.style.color = "black";
  /* Hack style to set vertical alignment of text. */
  _batteryMeterEl.style.lineHeight = "3.9pt";
  /* Add style for smaller font size. */
  _batteryMeterEl.style.fontSize = "5pt";

  if (_currentBatteryLevel) {
    _batteryMeterEl.textContent = _currentBatteryLevel;
  }
      
  BatteryState.resolveLabel = function () {
    var batteryMeterId = BatteryState.batteryFillDiv,
        batteryMeterEl = batteryMeterId && document.getElementById(batteryMeterId);
        
    _originalResolveLabel();
    
    if (batteryMeterEl) {
      batteryMeterEl.textContent = BatteryState.percent;
    }
  };
})();
`

MESSAGE='{
  "pillowId": "default_status_bar",
  "function": "'${SCRIPT}'"
}'

lipc-set-prop -s com.lab126.pillow interrogatePillow "$MESSAGE"

[twobob]

works perfectly on a PW, just so you know.

[Aeris]

Eureka!!! That's wonderful!!!! Thank you so much, didn't think it was possible to make a so perfect solution! Well done!


Thanks also to Twobob and Niluje for all the help that they gave me today

Now just have to test if when the charge is under 50% the number is still readable

[Aeris]

Btw I can't understand how could you make a such incredible code... do you work for amazon maybe? XD

[eureka]

Thanks. Number under 50 will certainly be unreadable, as it will be in black font on black background. Fix is possible (as well as displaying number when Kindle is charging or signaling about low charge), but it's tiresome enough to being out of my current fun zone, so I hope someone else will do it (help me! ).

Just look at /usr/share/webkit-1.0/pillow/default_status_bar.html and scripts included in this page.

In my shell script, text between SCRIPT line and last backquote before MESSAGE is plain JavaScript code executing in context of that HTML page. (Don't use line comments, as this code is glued in one big line before passing it to pillow.)

[Aeris]

Great! Thanks for references I think I will try to make a white number percentage with black background (hiding the battery)

[Case]

Originally Posted by eureka

So here is a script to display battery charge as a number (percent) on top of battery icon in top bar (only when not charging and charge is more than 10 percent).

You Sir are a Wizard! Amazing work.