85 lines
3.4 KiB
Python
85 lines
3.4 KiB
Python
# Copyright 2022 (c) Anna Schumaker.
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"""A custom Gtk.Box with controls for adjusting the volume."""
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from gi.repository import GObject
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from gi.repository import Gtk
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from gi.repository import Adw
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STEP_SIZE = 0.05
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def format_value_func(scale, value: float) -> str:
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"""Format the volume value to a percentage."""
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return f"{round(value*100)} %"
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class VolumeRow(Gtk.ListBoxRow):
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"""A Gtk.Box containing widgets for adjusting the volume."""
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volume = GObject.Property(type=float, default=1.0)
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def __init__(self, volume: float = 1.0):
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"""Initialize our volume controls."""
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super().__init__(volume=volume)
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self._box = Gtk.Box()
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self._decrement = Gtk.Button(icon_name="list-remove-symbolic",
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tooltip_text="reduce the volume",
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valign=Gtk.Align.END, has_frame=False,
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margin_bottom=5)
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self._adjustment = Gtk.Adjustment.new(volume, 0.0, 1.0,
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STEP_SIZE, 0, 0)
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self._scale = Gtk.Scale(adjustment=self._adjustment, draw_value=True,
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valign=Gtk.Align.END, hexpand=True)
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self._increment = Gtk.Button(icon_name="list-add-symbolic",
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tooltip_text="increase the volume",
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valign=Gtk.Align.END, has_frame=False,
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margin_bottom=5)
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self._scale.set_format_value_func(format_value_func)
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self._box.append(self._decrement)
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self._box.append(self._scale)
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self._box.append(self._increment)
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self.set_child(self._box)
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self._decrement.connect("clicked", self.decrement)
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self._scale.connect("value-changed", self.__value_changed)
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self._increment.connect("clicked", self.increment)
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self.bind_property("volume", self._adjustment, "value",
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GObject.BindingFlags.BIDIRECTIONAL)
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def decrement(self, button: Gtk.Button | None = None) -> None:
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"""Decrease the volume by STEP_SIZE."""
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self._scale.set_value(self._scale.get_value() - STEP_SIZE)
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def increment(self, button: Gtk.Button | None = None) -> None:
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"""Increase the volume by STEP_SIZE."""
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self._scale.set_value(self._scale.get_value() + STEP_SIZE)
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def __value_changed(self, range: Gtk.Range) -> None:
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self.volume = range.get_value()
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class BackgroundRow(Adw.ExpanderRow):
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"""A VolumeRow for setting Background Listening volume."""
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enabled = GObject.Property(type=bool, default=False)
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volume = GObject.Property(type=float, default=0.5)
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def __init__(self):
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"""Initialize the BackgroundRow."""
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super().__init__(title="Background Listening",
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subtitle="Decrease the volume to help focus")
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self._switch = Gtk.Switch(valign=Gtk.Align.CENTER)
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self._volume = VolumeRow(volume=self.volume)
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self.add_prefix(self._switch)
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self.add_row(self._volume)
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self._switch.bind_property("active", self, "expanded",
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GObject.BindingFlags.BIDIRECTIONAL)
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self.bind_property("enabled", self._switch, "active",
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GObject.BindingFlags.BIDIRECTIONAL)
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self.bind_property("volume", self._volume, "volume",
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GObject.BindingFlags.BIDIRECTIONAL)
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