Microphone level percentage not shown in the top bar

[krashish8]

Thank you for this great extension! @wbolster

I could not find the percentage level of the microphone in the top bar, beside the microphone icon. Only the microphone icon is visible in the top bar. I am experiencing this in GNOME Shell 3.36.4 on Ubuntu 20.04.

Screenshot:

NB: The 50% which you see on the right is the speaker's sound percentage, made available using the sound-percentage gnome-shell extension.

[krashish8]

Nevermind, I understood that this is how the extension is supposed to behave. I somehow figured out how to do it myself.

A label needs to be created and inserted in the appropriate position, something like this:

const Clutter = imports.gi.Clutter;

function enable() {
  // ...
  let panel_button_label = new St.Label({
    y_expand: true,
    y_align: Clutter.ActorAlign.CENTER
  });
  panel_button_label.text = microphone.level + '%';
  Main.panel._rightBox.insert_child_at_index(panel_button_label, 0);
}

function disable() {
  // ...
  panel_button_label.destroy();
  panel_button_label = null;
}

Maybe this can be added as an option in dconf, if it is not of any general interest. I have some global shortcuts to adjust the microphone volume to some particular percentages, therefore this feature particularly interests me.

However, I cannot figure out how to update this microphone.level value each time the microphone level is updated by the global shortcut. Also, as of now, it displays 0% always.

Do you know a fix for this, or how to do this? @wbolster
Any link to understand this might be helpful. I guess I need to connect this to a signal, however, I don't know how to. I am new to gnome extensions. :)

[krashish8]

Well, I somehow got it working locally by connecting to the notify signal of Gvc.MixerControl for the volume property:

refresh: function() {
  // ...
  this.stream.connect('notify::volume', (stream) => {
    this.notify_volume_change();
  });
  this.notify_volume_change();
  // ...
}

notify_volume_change: function() {
  this.emit('notify::volume_change');
},

// ...

def enable() {
  // ...
  microphone.connect(
    'notify::volume_change',
    function () {
      if (microphone.muted) {
        panel_button_label.text = '0%';
      } else {
        panel_button_label.text = microphone.level + '%';
      }
    });
  // ...
}

Thank you for this extension! 😄