325 lines
10 KiB
JavaScript
325 lines
10 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Clutter = imports.gi.Clutter;
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const Lang = imports.lang;
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const Gio = imports.gi.Gio;
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const Gvc = imports.gi.Gvc;
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const St = imports.gi.St;
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const Signals = imports.signals;
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const PanelMenu = imports.ui.panelMenu;
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const PopupMenu = imports.ui.popupMenu;
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const VOLUME_ADJUSTMENT_STEP = 0.05; /* Volume adjustment step in % */
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const VOLUME_NOTIFY_ID = 1;
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// Each Gvc.MixerControl is a connection to PulseAudio,
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// so it's better to make it a singleton
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let _mixerControl;
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function getMixerControl() {
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if (_mixerControl)
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return _mixerControl;
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_mixerControl = new Gvc.MixerControl({ name: 'GNOME Shell Volume Control' });
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_mixerControl.open();
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return _mixerControl;
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}
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const StreamSlider = new Lang.Class({
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Name: 'StreamSlider',
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_init: function(control, title) {
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this._control = control;
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this.item = new PopupMenu.PopupMenuSection();
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this._title = new PopupMenu.PopupMenuItem(title, { reactive: false });
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this._slider = new PopupMenu.PopupSliderMenuItem(0);
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this._slider.connect('value-changed', Lang.bind(this, this._sliderChanged));
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this._slider.connect('drag-end', Lang.bind(this, this._notifyVolumeChange));
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this.item.addMenuItem(this._title);
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this.item.addMenuItem(this._slider);
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this._stream = null;
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this._shouldShow = true;
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},
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get stream() {
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return this._stream;
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},
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set stream(stream) {
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if (this._stream) {
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this._disconnectStream(this._stream);
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}
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this._stream = stream;
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if (this._stream) {
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this._connectStream(this._stream);
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this._updateVolume();
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} else {
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this.emit('stream-updated');
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}
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this._updateVisibility();
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},
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_disconnectStream: function(stream) {
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stream.disconnect(this._mutedChangedId);
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this._mutedChangedId = 0;
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stream.disconnect(this._volumeChangedId);
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this._volumeChangedId = 0;
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},
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_connectStream: function(stream) {
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this._mutedChangedId = stream.connect('notify::is-muted', Lang.bind(this, this._updateVolume));
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this._volumeChangedId = stream.connect('notify::volume', Lang.bind(this, this._updateVolume));
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},
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_shouldBeVisible: function() {
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return this._stream != null;
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},
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_updateVisibility: function() {
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let visible = this._shouldBeVisible();
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this._title.actor.visible = visible;
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this._slider.actor.visible = visible;
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},
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scroll: function(event) {
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this._slider.scroll(event);
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},
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setValue: function(value) {
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// piggy-back off of sliderChanged
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this._slider.setValue(value);
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},
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_sliderChanged: function(slider, value, property) {
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if (!this._stream)
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return;
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let volume = value * this._control.get_vol_max_norm();
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let prevMuted = this._stream.is_muted;
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if (volume < 1) {
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this._stream.volume = 0;
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if (!prevMuted)
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this._stream.change_is_muted(true);
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} else {
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this._stream.volume = volume;
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if (prevMuted)
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this._stream.change_is_muted(false);
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}
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this._stream.push_volume();
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},
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_notifyVolumeChange: function() {
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global.cancel_theme_sound(VOLUME_NOTIFY_ID);
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global.play_theme_sound(VOLUME_NOTIFY_ID,
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'audio-volume-change',
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_("Volume changed"),
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Clutter.get_current_event ());
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},
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_updateVolume: function() {
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let muted = this._stream.is_muted;
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this._slider.setValue(muted ? 0 : (this._stream.volume / this._control.get_vol_max_norm()));
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this.emit('stream-updated');
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},
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getIcon: function() {
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if (!this._stream)
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return null;
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let volume = this._stream.volume;
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if (this._stream.is_muted || volume <= 0) {
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return 'audio-volume-muted-symbolic';
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} else {
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let n = Math.floor(3 * volume / this._control.get_vol_max_norm()) + 1;
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if (n < 2)
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return 'audio-volume-low-symbolic';
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if (n >= 3)
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return 'audio-volume-high-symbolic';
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return 'audio-volume-medium-symbolic';
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}
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}
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});
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Signals.addSignalMethods(StreamSlider.prototype);
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const OutputStreamSlider = new Lang.Class({
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Name: 'OutputStreamSlider',
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Extends: StreamSlider,
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_connectStream: function(stream) {
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this.parent(stream);
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this._portChangedId = stream.connect('notify::port', Lang.bind(this, this._portChanged));
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this._portChanged();
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},
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_findHeadphones: function(sink) {
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// This only works for external headphones (e.g. bluetooth)
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if (sink.get_form_factor() == 'headset' ||
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sink.get_form_factor() == 'headphone')
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return true;
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// a bit hackish, but ALSA/PulseAudio have a number
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// of different identifiers for headphones, and I could
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// not find the complete list
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if (sink.get_ports().length > 0)
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return sink.get_port().port.indexOf('headphone') >= 0;
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return false;
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},
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_disconnectStream: function(stream) {
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this.parent(stream);
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stream.disconnect(this._portChangedId);
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this._portChangedId = 0;
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},
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_portChanged: function() {
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let hasHeadphones = this._findHeadphones(this._stream);
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if (hasHeadphones != this._hasHeadphones) {
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this._hasHeadphones = hasHeadphones;
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this.emit('headphones-changed', this._hasHeadphones);
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}
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}
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});
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const InputStreamSlider = new Lang.Class({
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Name: 'InputStreamSlider',
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Extends: StreamSlider,
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_init: function(control, title) {
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this.parent(control, title);
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this._control.connect('stream-added', Lang.bind(this, this._maybeShowInput));
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this._control.connect('stream-removed', Lang.bind(this, this._maybeShowInput));
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},
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_connectStream: function(stream) {
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this.parent(stream);
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this._maybeShowInput();
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},
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_maybeShowInput: function() {
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// only show input widgets if any application is recording audio
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let showInput = false;
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let recordingApps = this._control.get_source_outputs();
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if (this._stream && recordingApps) {
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for (let i = 0; i < recordingApps.length; i++) {
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let outputStream = recordingApps[i];
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let id = outputStream.get_application_id();
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// but skip gnome-volume-control and pavucontrol
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// (that appear as recording because they show the input level)
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if (!id || (id != 'org.gnome.VolumeControl' && id != 'org.PulseAudio.pavucontrol')) {
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showInput = true;
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break;
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}
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}
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}
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this._showInput = showInput;
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this._updateVisibility();
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},
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_shouldBeVisible: function() {
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return this.parent() && this._showInput;
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}
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});
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const VolumeMenu = new Lang.Class({
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Name: 'VolumeMenu',
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Extends: PopupMenu.PopupMenuSection,
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_init: function(control) {
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this.parent();
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this.hasHeadphones = false;
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this._control = control;
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this._control.connect('state-changed', Lang.bind(this, this._onControlStateChanged));
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this._control.connect('default-sink-changed', Lang.bind(this, this._readOutput));
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this._control.connect('default-source-changed', Lang.bind(this, this._readInput));
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/* Translators: This is the label for audio volume */
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this._output = new OutputStreamSlider(this._control, _("Volume"));
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this._output.connect('stream-updated', Lang.bind(this, function() {
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this.emit('icon-changed');
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}));
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this._output.connect('headphones-changed', Lang.bind(this, function(stream, value) {
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this.emit('headphones-changed', value);
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}));
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this.addMenuItem(this._output.item);
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this._input = new InputStreamSlider(this._control, _("Microphone"));
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this.addMenuItem(this._input.item);
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this.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
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this._onControlStateChanged();
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},
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scroll: function(event) {
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this._output.scroll(event);
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},
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_onControlStateChanged: function() {
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if (this._control.get_state() == Gvc.MixerControlState.READY) {
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this._readInput();
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this._readOutput();
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} else {
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this.emit('icon-changed');
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}
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},
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_readOutput: function() {
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this._output.stream = this._control.get_default_sink();
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},
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_readInput: function() {
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this._input.stream = this._control.get_default_source();
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},
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getIcon: function() {
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return this._output.getIcon();
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}
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});
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const Indicator = new Lang.Class({
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Name: 'VolumeIndicator',
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Extends: PanelMenu.SystemStatusButton,
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_init: function() {
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this.parent('audio-volume-muted-symbolic', _("Volume"));
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this._control = getMixerControl();
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this._volumeMenu = new VolumeMenu(this._control);
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this._volumeMenu.connect('icon-changed', Lang.bind(this, function(menu) {
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let icon = this._volumeMenu.getIcon();
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this.actor.visible = (icon != null);
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this.setIcon(icon);
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}));
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this._volumeMenu.connect('headphones-changed', Lang.bind(this, function(menu, value) {
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this._headphoneIcon.visible = value;
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}));
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this._headphoneIcon = this.addIcon(new Gio.ThemedIcon({ name: 'audio-headphones-symbolic' }));
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this._headphoneIcon.visible = false;
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this.menu.addMenuItem(this._volumeMenu);
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this.menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
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this.menu.addSettingsAction(_("Sound Settings"), 'gnome-sound-panel.desktop');
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this.actor.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
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},
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_onScrollEvent: function(actor, event) {
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this._volumeMenu.scroll(event);
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}
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});
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