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livetrax/share/web_surfaces/builtin/mixer/js/tkwidget.js

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/*
* Copyright © 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 loadToolkit from './tkloader.js';
import { BaseContainer, BaseControl } from './widget.js';
class Control extends BaseControl {
get element () {
return this.tk.element;
}
}
class RangeControl extends Control {
constructor (tk) {
super();
this.tk = tk;
this.lastValue = NaN;
this.tk.add_event('useraction', (name, value) => {
if ((name == 'value') && (this.lastValue != value)) {
this.lastValue = value;
this.callback(value);
}
});
}
get value () {
return this.tk.get('value');
}
set value (val) {
this.tk.set('value', val);
}
}
class Knob extends RangeControl {
constructor (options) {
super(new TK.Knob(options));
}
}
export async function createRootContainer () {
await loadToolkit();
const root = new Container();
root.tk = new TK.Root({id: 'root'});
document.body.appendChild(root.element);
return root;
}
export class Container extends BaseContainer {
constructor () {
super();
this.tk = new TK.Container();
}
get element () {
return this.tk.element;
}
appendChild (child) {
super.appendChild(child);
this.tk.append_child(child.tk);
}
}
export class Toggle extends Control {
constructor () {
super(new TK.Toggle());
this.tk.add_event('toggled', (state) => this.callback(state));
}
get value () {
return this.tk.get('state');
}
set value (val) {
this.tk.set('state', val);
}
}
export class StripGainFader extends RangeControl {
constructor () {
super(new TK.Fader({
scale: 'decibel',
min: -58.0,
max: 6.0
}));
}
}
export class StripMeter extends RangeControl {
constructor () {
super(new TK.LevelMeter({
show_scale: false,
scale: 'decibel',
min: -58.0,
max: 6.0
}));
}
set value (val) {
this.tk.set('value', val);
}
}
export class LinearKnob extends Knob {
constructor (min, max) {
super({
scale: 'linear',
min: min,
max: max
});
}
}
export class LogKnob extends Knob {
constructor (min, max) {
super({
scale: 'log2',
min: min,
max: max
});
}
}
export class DiscreteKnob extends Knob {
constructor (min, max, step) {
super({
scale: 'linear',
min: min,
max: max,
snap: step || 1
});
}
}
export class PanKnob extends Knob {
constructor () {
super({
//scale: 'linear',
scale: (k) => 1.0 - k,
min: 0,
max: 1.0,
hand: {
width: 5,
length: 15
}
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});
}
}