class VolumeControl(Gtk.Box):
"""
A direct child of the AudioPanel, it provides the volume slider. This shows
any time we are Awake, regardless of any media player connections. We use libcvc
to interact with the audio subsystem.
"""
def __init__(self):
super(VolumeControl,
self).__init__(orientation=Gtk.Orientation.HORIZONTAL)
self.output = None
self.controller = None
self.volume_slider = VolumeSlider()
trackers.con_tracker_get().connect(self.volume_slider, "value-changed",
self.on_volume_slider_changed)
trackers.con_tracker_get().connect(self.volume_slider,
"button-press-event",
self.on_button_press_event)
if not utils.have_gtk_version("3.18.0"):
trackers.con_tracker_get().connect(self.volume_slider,
"scroll-event",
self.on_scroll_event)
self.pack_start(self.volume_slider, False, False, 6)
self.initialize_sound_controller()
def initialize_sound_controller(self):
self.controller = Cvc.MixerControl(name="cinnamon-screensaver")
trackers.con_tracker_get().connect(self.controller, "state-changed",
self.on_state_changed)
trackers.con_tracker_get().connect(self.controller,
"default-sink-changed",
self.on_state_changed)
self.controller.open()
self.on_state_changed()
def on_state_changed(self, controller=None, state=0):
if controller and controller != self.controller:
old = self.controller
self.controller = controller
del old
if self.controller.get_state() == Cvc.MixerControlState.READY:
new = self.controller.get_default_sink()
if self.output and self.output != new:
old = self.output
self.output = new
del old
else:
self.output = new
trackers.con_tracker_get().connect(self.output, "notify::is-muted",
self.on_volume_changed)
trackers.con_tracker_get().connect(self.output, "notify::volume",
self.on_volume_changed)
self.on_volume_changed(None, None)
def on_volume_changed(self, output, pspec):
vol = self.output.props.volume
muted = self.output.get_is_muted()
max_vol = self.controller.get_vol_max_norm()
normalized_volume = int(min((vol / max_vol * 100), 100))
self.update_slider(normalized_volume, muted)
def update_slider(self, volume, muted):
trackers.con_tracker_get().handler_block(self.volume_slider,
"value-changed",
self.on_volume_slider_changed)
self.volume_slider.set_muted(muted)
self.volume_slider.set_value(volume)
trackers.con_tracker_get().handler_unblock(
self.volume_slider, "value-changed", self.on_volume_slider_changed)
def on_volume_slider_changed(self, range, data=None):
value = self.volume_slider.get_value()
max_norm = self.controller.get_vol_max_norm()
denormalized_volume = utils.CLAMP((value / 100) * max_norm, 0,
max_norm)
trackers.con_tracker_get().handler_block(self.output, "notify::volume",
self.on_volume_changed)
trackers.con_tracker_get().handler_block(self.output,
"notify::is-muted",
self.on_volume_changed)
self.output.set_volume(denormalized_volume)
self.output.push_volume()
self.output.change_is_muted(False)
trackers.con_tracker_get().handler_unblock(self.output,
"notify::volume",
self.on_volume_changed)
trackers.con_tracker_get().handler_unblock(self.output,
"notify::is-muted",
self.on_volume_changed)
def on_button_press_event(self, widget, event):
if event.button == 2:
self.output.set_is_muted(not self.volume_slider.muted)
return Gdk.EVENT_PROPAGATE
def on_scroll_event(self, widget, event):
success, dx, dy = event.get_scroll_deltas()
step = self.volume_slider.get_adjustment().get_step_increment()
if dy < 0:
self.volume_slider.set_value(self.volume_slider.get_value() + step)
elif dy > 0:
self.volume_slider.set_value(self.volume_slider.get_value() - step)
return Gdk.EVENT_STOP
class VolumeControl(Gtk.Box):
"""
A direct child of the AudioPanel, it provides the volume slider. This shows
any time we are Awake, regardless of any media player connections. We use libcvc
to interact with the audio subsystem.
"""
def __init__(self):
super(VolumeControl, self).__init__(orientation=Gtk.Orientation.HORIZONTAL)
self.output = None
self.controller = None
self.volume_slider = VolumeSlider()
self.volume_slider.show_all()
self.set_no_show_all(True)
self.pack_start(self.volume_slider, False, False, 6)
self.initialize_sound_controller()
def initialize_sound_controller(self):
self.controller = Cvc.MixerControl(name="cinnamon-screensaver")
trackers.con_tracker_get().connect(self.controller,
"state-changed",
self.on_state_changed)
trackers.con_tracker_get().connect(self.controller,
"default-sink-changed",
self.on_state_changed)
self.controller.open()
self.on_state_changed()
def on_state_changed(self, controller=None, state=0):
if controller and controller != self.controller:
old = self.controller
self.controller = controller
del old
if self.controller.get_state() == Cvc.MixerControlState.READY:
new = self.controller.get_default_sink()
if new is not None:
if self.output and self.output != new:
old = self.output
self.output = new
del old
else:
self.output = new
trackers.con_tracker_get().connect(self.output,
"notify::is-muted",
self.on_volume_changed)
trackers.con_tracker_get().connect(self.output,
"notify::volume",
self.on_volume_changed)
trackers.con_tracker_get().connect(self.volume_slider,
"value-changed",
self.on_volume_slider_changed)
trackers.con_tracker_get().connect(self.volume_slider,
"button-press-event",
self.on_button_press_event)
if not utils.have_gtk_version("3.18.0"):
trackers.con_tracker_get().connect(self.volume_slider,
"scroll-event",
self.on_scroll_event)
self.on_volume_changed(None, None)
self.show()
return
self.hide()
def on_volume_changed(self, output, pspec):
vol = self.output.props.volume
muted = self.output.get_is_muted()
max_vol = self.controller.get_vol_max_norm()
normalized_volume = int(min((vol / max_vol * 100), 100))
self.update_slider(normalized_volume, muted)
def update_slider(self, volume, muted):
trackers.con_tracker_get().handler_block(self.volume_slider,
"value-changed",
self.on_volume_slider_changed)
self.volume_slider.set_muted(muted)
self.volume_slider.set_value(volume)
trackers.con_tracker_get().handler_unblock(self.volume_slider,
"value-changed",
self.on_volume_slider_changed)
def on_volume_slider_changed(self, range, data=None):
value = self.volume_slider.get_value()
max_norm = self.controller.get_vol_max_norm()
denormalized_volume = utils.CLAMP((value / 100) * max_norm, 0, max_norm)
trackers.con_tracker_get().handler_block(self.output,
"notify::volume",
self.on_volume_changed)
trackers.con_tracker_get().handler_block(self.output,
"notify::is-muted",
self.on_volume_changed)
self.output.set_volume(denormalized_volume)
self.output.push_volume()
self.output.change_is_muted(False)
trackers.con_tracker_get().handler_unblock(self.output,
"notify::volume",
self.on_volume_changed)
trackers.con_tracker_get().handler_unblock(self.output,
"notify::is-muted",
self.on_volume_changed)
def on_button_press_event(self, widget, event):
if event.button == 2:
self.output.set_is_muted(not self.volume_slider.muted)
return Gdk.EVENT_PROPAGATE
def on_scroll_event(self, widget, event):
success, dx, dy = event.get_scroll_deltas()
step = self.volume_slider.get_adjustment().get_step_increment()
if dy < 0:
self.volume_slider.set_value(self.volume_slider.get_value() + step)
elif dy > 0:
self.volume_slider.set_value(self.volume_slider.get_value() - step)
return Gdk.EVENT_STOP
class VolumeControl(Gtk.Box):
def __init__(self):
super(VolumeControl, self).__init__(orientation=Gtk.Orientation.HORIZONTAL)
self.output = None
self.controller = None
self.volume_slider = VolumeSlider();
trackers.con_tracker_get().connect(self.volume_slider,
"value-changed",
self.on_volume_slider_changed)
trackers.con_tracker_get().connect(self.volume_slider,
"button-press-event",
self.on_button_press_event)
self.pack_start(self.volume_slider, False, False, 6)
self.initialize_sound_controller()
def initialize_sound_controller(self):
self.controller = Cvc.MixerControl(name="cinnamon-screensaver")
trackers.con_tracker_get().connect(self.controller,
"state-changed",
self.on_state_changed)
trackers.con_tracker_get().connect(self.controller,
"default-sink-changed",
self.on_state_changed)
self.controller.open()
self.on_state_changed()
def on_state_changed(self, controller=None, state=0):
if controller and controller != self.controller:
old = self.controller
self.controller = controller
del old
if self.controller.get_state() == Cvc.MixerControlState.READY:
new = self.controller.get_default_sink()
if self.output and self.output != new:
old = self.output
self.output = new
del old
else:
self.output = new
trackers.con_tracker_get().connect(self.output,
"notify::is-muted",
self.on_volume_changed)
trackers.con_tracker_get().connect(self.output,
"notify::volume",
self.on_volume_changed)
self.on_volume_changed(None, None)
def on_volume_changed(self, output, pspec):
vol = self.output.props.volume
muted = self.output.get_is_muted()
max_vol = self.controller.get_vol_max_norm()
normalized_volume = int(min((vol / max_vol * 100), 100))
self.update_slider(normalized_volume, muted)
def update_slider(self, volume, muted):
trackers.con_tracker_get().handler_block(self.volume_slider,
"value-changed",
self.on_volume_slider_changed)
self.volume_slider.set_muted(muted)
self.volume_slider.set_value(volume)
trackers.con_tracker_get().handler_unblock(self.volume_slider,
"value-changed",
self.on_volume_slider_changed)
def on_volume_slider_changed(self, range, data=None):
value = self.volume_slider.get_value()
max_norm = self.controller.get_vol_max_norm()
denormalized_volume = utils.CLAMP((value / 100) * max_norm, 0, max_norm)
trackers.con_tracker_get().handler_block(self.output,
"notify::volume",
self.on_volume_changed)
trackers.con_tracker_get().handler_block(self.output,
"notify::is-muted",
self.on_volume_changed)
self.output.set_volume(denormalized_volume)
self.output.push_volume()
self.output.change_is_muted(False)
trackers.con_tracker_get().handler_unblock(self.output,
"notify::volume",
self.on_volume_changed)
trackers.con_tracker_get().handler_unblock(self.output,
"notify::is-muted",
self.on_volume_changed)
def on_button_press_event(self, widget, event):
if event.button == 2:
self.output.set_is_muted(not self.volume_slider.muted)
return Gdk.EVENT_PROPAGATE