nixos-configs/devices/wim/config/ags/services/brightness.js

135 lines
3.3 KiB
JavaScript

import Service from 'resource:///com/github/Aylur/ags/service.js';
import Variable from 'resource:///com/github/Aylur/ags/variable.js';
import { exec, execAsync } from 'resource:///com/github/Aylur/ags/utils.js';
const KBD = 'tpacpi::kbd_backlight';
const CAPS = 'input0::capslock';
const INTERVAL = 500;
const SCREEN_ICONS = {
90: 'display-brightness-high-symbolic',
70: 'display-brightness-medium-symbolic',
20: 'display-brightness-low-symbolic',
5: 'display-brightness-off-symbolic',
};
class Brightness extends Service {
static {
Service.register(this, {
screen: ['float'],
kbd: ['float'],
caps: ['int'],
}, {
'screen-icon': ['string', 'rw'],
'caps-icon': ['string', 'rw'],
});
}
#kbd = 0;
#screen = 0;
#screenIcon = 'display-brightness-symbolic';
#caps = 0;
#capsIcon = 'caps-lock-symbolic';
get kbd() {
return this.#kbd;
}
get screen() {
return this.#screen;
}
get screenIcon() {
return this.#screenIcon;
}
get caps() {
return this.#caps;
}
get capsIcon() {
return this.#capsIcon;
}
set kbd(value) {
this.#kbd = value;
// TODO
}
set screen(percent) {
if (percent < 0) {
percent = 0;
}
if (percent > 1) {
percent = 1;
}
execAsync(`brightnessctl s ${percent * 100}% -q`)
.then(() => {
this.#screen = percent;
this.#getScreenIcon();
this.emit('screen', this.#screen);
})
.catch(console.error);
}
constructor() {
super();
try {
this.#monitorKbdState();
this.#caps = Number(exec(`brightnessctl -d ${CAPS} g`));
this.#screen = Number(exec('brightnessctl g')) /
Number(exec('brightnessctl m'));
}
catch (error) {
console.error('missing dependancy: brightnessctl');
}
}
#getScreenIcon() {
const brightness = this.#screen * 100;
// eslint-disable-next-line
for (const threshold of [4, 19, 69, 89]) {
if (brightness > threshold + 1) {
this.#screenIcon = SCREEN_ICONS[threshold + 1];
this.notify('screen-icon');
}
}
}
fetchCapsState() {
execAsync(`brightnessctl -d ${CAPS} g`)
.then((out) => {
this.#caps = Number(out);
this.#capsIcon = this.#caps ?
'caps-lock-symbolic' :
'capslock-disabled-symbolic';
this.notify('caps-icon');
this.emit('caps', this.#caps);
})
.catch(logError);
}
#monitorKbdState() {
Variable(0, {
poll: [
INTERVAL,
`brightnessctl -d ${KBD} g`,
(out) => {
if (parseInt(out) !== this.#kbd) {
this.#kbd = parseInt(out);
this.emit('kbd', this.#kbd);
return this.#kbd;
}
},
],
});
}
}
const brightnessService = new Brightness();
export default brightnessService;