101 lines
2.0 KiB
JavaScript
101 lines
2.0 KiB
JavaScript
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const Main = imports.ui.main;
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const Clutter = imports.gi.Clutter;
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const Volume = imports.ui.status.volume;
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const Gio = imports.gi.Gio;
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const VOL_ICONS = [
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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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let panel,
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panelBinding,
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volumeControl,
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volumeStep;
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function init() {
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volumeControl = Volume.getMixerControl();
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volumeStep = 500;
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panel = Main.panel;
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panelBinding = null;
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}
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function enable() {
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panel.reactive = true;
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if (panelBinding) {
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disable();
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}
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panelBinding = panel.actor.connect('scroll-event',_onScroll);
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}
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function disable() {
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if (panelBinding) {
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panel.actor.disconnect(panelBinding);
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panelBinding = null;
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}
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}
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/**
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* Returns the max volume.
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*/
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function _getVolumeMax() {
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return volumeControl.get_vol_max_norm();
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//return volumeControl.get_vol_max_amplified(); // boost volume (150%)
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}
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/**
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* Handles panel mouse scroll event.
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*/
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function _onScroll(actor, event) {
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let volume = volumeControl.get_default_sink().volume;
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switch(event.get_scroll_direction()) {
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case Clutter.ScrollDirection.UP:
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volume += volumeStep;
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break;
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case Clutter.ScrollDirection.DOWN:
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volume -= volumeStep;
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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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if (volume > _getVolumeMax()) {
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volume = _getVolumeMax();
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}
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else if (volume < volumeStep) {
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volume = 0;
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}
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volumeControl.get_default_sink().volume = volume;
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volumeControl.get_default_sink().push_volume();
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_showVolumeOsd(volume, volume/_getVolumeMax() * 100);
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return Clutter.EVENT_STOP;
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}
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/**
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* Shows the current volume on OSD.
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*
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* @see gsd-media-keys-manager.c
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*/
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function _showVolumeOsd (level, percent) {
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let monitor = -1;
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let n;
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if (level === 0) {
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n = 0;
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} else {
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n = parseInt(3 * percent / 100 + 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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let icon = Gio.Icon.new_for_string(VOL_ICONS[n]);
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Main.osdWindowManager.show(monitor, icon, null, percent);
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}
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