D26418: [Applet]Add global mute function

[George Vogiatzis]

gvgeo added a comment.


  Icon is not monochrome. Is there an alternative? Or have  to do it with desaturate graphical effect?
  
  With the current functionality, fits nice to make it colored when all the devices are muted. This adds a semi enabled state, when global mute is not enabled.
  
  Function wise, can ignore this patch, and instead make it as a dummy indicator, switch. Muting/unmuting all the devices.
  That way when a new unmute device added or an unmuted port connects, global mute icon will disable, without affecting any other device state.

REPOSITORY
  R115 Plasma Audio Volume Applet

REVISION DETAIL
  https://phabricator.kde.org/D26418

To: gvgeo, #vdg, #plasma, drosca
Cc: plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, zachus, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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