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livetrax/share/web_surfaces/builtin/transport/main.js

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JavaScript
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/*
* Copyright (C) 2020 Luciano Iam <lucianito@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
import { ArdourClient } from '/shared/ardour.js';
(() => {
const dom = {
main : document.getElementById('main'),
time : document.getElementById('time'),
roll : document.getElementById('roll'),
record : document.getElementById('record'),
fullscreen : document.getElementById('fullscreen')
};
const ardour = new ArdourClient();
let _rolling = false;
let _record = false;
function main () {
addDomEventListeners();
ardour.transport.on('time', setPosition);
ardour.transport.on('roll', setRolling);
ardour.transport.on('record', setRecord);
ardour.connect();
}
function addDomEventListeners () {
// transport buttons
const touchOrClick = ('ontouchstart' in document.documentElement) ? 'touchstart' : 'click';
const roll = () => {
setRolling(!_rolling);
ardour.transport.roll = _rolling;
};
dom.roll.addEventListener(touchOrClick, roll);
const record = () => {
setRecord(!_record);
ardour.transport.record = _record;
};
dom.record.addEventListener(touchOrClick, record);
// fullscreen button
let requestFullscreen = null, fullscreenChange = null;
if ('requestFullscreen' in dom.main) {
requestFullscreen = dom.main.requestFullscreen.bind(dom.main);
fullscreenChange = 'fullscreenchange';
} else if ('webkitRequestFullscreen' in dom.main) {
requestFullscreen = dom.main.webkitRequestFullscreen.bind(dom.main);
fullscreenChange = 'webkitfullscreenchange';
}
if (requestFullscreen && fullscreenChange) {
dom.fullscreen.addEventListener(touchOrClick, requestFullscreen);
document.addEventListener(fullscreenChange, (e) => {
const fullscreen = document.fullScreen || document.webkitIsFullScreen;
dom.fullscreen.style.display = fullscreen ? 'none' : 'inline';
});
} else {
dom.fullscreen.style.display = 'none';
}
// keyboard actions
document.addEventListener('keydown', (e) => {
const key = e.key.toLowerCase();
if (key == ' ') {
roll();
} else if (key == 'r') {
record();
} else if (key == 'f') {
requestFullscreen();
}
});
}
function setPosition (seconds) {
const h = Math.floor(seconds / 3600),
m = Math.floor((seconds - 3600 * h) / 60),
s = Math.floor(seconds - 3600 * h - 60 * m),
ms = Math.round(1000 * (seconds % 1)),
time = (h < 10 ? '0' + h : h)
+ ':' + (m < 10 ? '0' + m : m)
+ ':' + (s < 10 ? '0' + s : s)
+ '.' + (ms < 100 ? (ms < 10 ? '00' + ms : '0' + ms) : ms);
dom.time.innerHTML = time;
}
function setRolling (rolling) {
_rolling = rolling
const image = _rolling ? 'img/pause.svg' : 'img/play.svg';
dom.roll.style.backgroundImage = `url(${image})`;
}
function setRecord (record) {
_record = record;
if (_record) {
dom.record.style.backgroundImage = 'url(img/record-on.svg)';
dom.record.classList.add('pulse');
} else {
dom.record.style.backgroundImage = 'url(img/record-off.svg)';
dom.record.classList.remove('pulse');
}
}
main();
})();