The same way that GNOME Shell does it, we set:
* audio-volume-muted-symbolic when mute button is toggled*
* audio-volume-low-symbolic when 0 < volume < 30%
* audio-volume-medium-symbolic when 30% < volume < 70%
* audio-volume-high-symbolic when 70% < volume <= 100%
When "muted" we can't actually rely on volume (it can be close
to zero but not absolute zero). Instead of requiring volume == 0,
we track the state based on whether the mute button is active.
Fixes#521
Since 9d612ff1c7 this is required,
otherwise we never set up the GtkAdjustment and so the scales don't
display any values or widget to make adjustments, meaning they can't be
used.
Also call `notify_volume_cb()` from `update_ranges()` to initialise the
adjustment, since when we set the mixer control we now might not have
set the value.
Closes#652
GVC added additional checks that break where we were using a NULL value instead
of a GvcMixerControl. Solution is to pass this object where appropriate.
(gnome-control-center:833): Gvc-CRITICAL **: 11:09:33.818: gvc_mixer_control_get_vol_max_norm: assertion 'GVC_IS_MIXER_CONTROL (control)' failed
Fixes#636
The current code does not differenciate between input and
output, and thus it shows the same icon for muting outputs
and inputs. As per design suggesion [1], the input row
should use the "microphone-sensitivity-muted-symbolic" icon.
In order to achieve that, move the CcLevelBarStreamType enum
to a separate header, and rename it to CcStreamType. And also
pass the stream type to the volume slider.
In CcVolumeSlider, update the code to switch to the correct
mute icon depending on the stream type.
[1] https://gitlab.gnome.org/GNOME/gnome-control-center/issues/539
Fixes https://gitlab.gnome.org/GNOME/gnome-control-center/issues/539
