139 lines
3.1 KiB
JavaScript
139 lines
3.1 KiB
JavaScript
const Clutter = imports.gi.Clutter;
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const Gio = imports.gi.Gio;
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const Main = imports.ui.main;
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const Volume = imports.ui.status.volume;
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let volume_scroller = null;
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const VolumeScrollerIcons =
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[
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'audio-volume-muted-symbolic',
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'audio-volume-low-symbolic',
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'audio-volume-medium-symbolic',
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'audio-volume-high-symbolic'
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];
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class VolumeScroller
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{
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constructor()
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{
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this.controller = Volume.getMixerControl();
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this.panel = Main.panel;
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this.enabled = false;
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this.sink = null;
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this.volume_max = this.controller.get_vol_max_norm();
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this.volume_step = 0.05 * this.volume_max;
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this.scroll_binding = null;
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this.sink_binding = null;
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}
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enable()
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{
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if (this.enabled)
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{
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this.disable();
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}
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this.enabled = true;
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this.sink = this.controller.get_default_sink();
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this.scroll_binding = this.panel.connect(
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'scroll-event',
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(actor, event) => this._handle_scroll(actor, event));
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this.sink_binding = this.controller.connect(
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'default-sink-changed',
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(controller, id) => this._handle_sink_change(controller, id));
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}
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disable()
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{
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if (this.enabled)
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{
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this.enabled = false;
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this.sink = null;
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this.panel.disconnect(this.scroll_binding);
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this.scroll_binding = null;
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this.controller.disconnect(this.sink_binding);
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this.sink_binding = null;
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}
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}
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_handle_scroll(actor, event)
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{
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let volume = this.sink.volume;
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switch (event.get_scroll_direction())
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{
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case Clutter.ScrollDirection.UP:
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volume += this.volume_step;
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break;
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case Clutter.ScrollDirection.DOWN:
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volume -= this.volume_step;
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break;
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default:
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return Clutter.EVENT_PROPAGATE;
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}
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volume = Math.min(volume, this.volume_max);
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volume = Math.max(volume, 0);
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this.sink.volume = volume;
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this.sink.push_volume();
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this._show_volume(volume);
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return Clutter.EVENT_STOP;
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}
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_handle_sink_change(controller, id)
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{
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this.sink = controller.lookup_stream_id(id);
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}
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_show_volume(volume)
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{
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const percentage = volume / this.volume_max;
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let n;
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if (volume === 0)
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{
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n = 0;
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}
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else
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{
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n = parseInt(3 * percentage + 1);
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n = Math.max(1, n);
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n = Math.min(3, n);
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}
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const monitor = -1; // Display volume window on all monitors.
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const icon = Gio.Icon.new_for_string(VolumeScrollerIcons[n]);
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const label = this.sink.get_port().human_port;
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Main.osdWindowManager.show(monitor, icon, label, percentage);
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}
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};
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function enable()
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{
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volume_scroller = new VolumeScroller();
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volume_scroller.enable();
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}
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function disable()
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{
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if (volume_scroller !== null)
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{
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volume_scroller.disable();
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volume_scroller = null;
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}
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}
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