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webaudio-controls.html
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webaudio-controls.html
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<!--
/* *
*
* WebAudio-Controls is based on
* webaudio-knob by Eiji Kitamura http://google.com/+agektmr
* webaudio-slider by RYoya Kawai https://plus.google.com/108242669191458983485/posts
* webaudio-switch by Keisuke Ai http://d.hatena.ne.jp/aike/
* Integrated and enhanced by g200kg http://www.g200kg.com/
*
* Copyright 2013 Eiji Kitamura / Ryoya KAWAI / Keisuke Ai / g200kg(Tatsuya Shinyagaito)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* */
-->
<link rel="import" href="./bower_componentsv2/polymer/polymer.html">
<dom-module id="webaudio-knob">
<template>
<style>
:host {
user-select: none;
position: relative;
display: inline-block;
font-family: sans-serif;
font-size: 11px;
padding: 0;
margin: 0;
}
#wac-body {
position: relative;
display: inline-block;
margin: 0;
padding: 0;
width: 100%;
height: 100%;
}
#wac-knob {
display: inline-block;
cursor: pointer;
margin: 0;
padding: 0;
width: 100%;
height: 100%;
border: attr(b-t);
background-repeat: no-repeat;
background-position: 0px 0px;
}
#wac-valuetip-row {
display: block;
z-index: 10;
width: 100%;
user-select: none;
position: absolute;
top: -20px;
height: 20px;
text-align: center;
}
#wac-valuetip {
text-align: center;
z-index: 10;
display: none;
opacity: 0;
border: solid 1px #666;
background-color: #fff;
color: #000;
border-radius: 4px;
padding: 3px 8px;
transition: opacity 0.3s;
}
#wac-tooltip-box {
position: absolute;
bottom: -24px;
left: 20px;
z-index: 10;
display: none;
opacity: 0;
width: 200px;
transition: opacity 0.5s;
}
#wac-tooltip-text {
display: inline-block;
border: solid 0px #666;
background-color: #fff;
color: #000;
border-radius: 5px;
padding: 5px;
}
/* context midilearn menu */
.context-menu {
display: none;
position: absolute;
z-index: 10;
padding: 12px 0;
width: 240px;
background-color: #fff;
border: solid 1px #dfdfdf;
box-shadow: 1px 1px 2px #cfcfcf;
}
.context-menu--active {
display: block;
}
.context-menu__items {
list-style: none;
margin: 0;
padding: 0;
}
.context-menu__item {
display: block;
margin-bottom: 4px;
padding: 4px 12px;
color: #0066aa;
text-decoration: none;
}
.context-menu__item:last-child {
margin-bottom: 0;
}
.context-menu__item:hover {
color: #fff;
background-color: #0066aa;
}
</style>
<div class="wac-body" id="wac-body" touch-action="none">
<div id="wac-knob" touch-action="none"></div>
<div id="wac-valuetip-row"><span id="wac-valuetip" touch-action="none">{{valuestr}}</span></div>
<div id="wac-tooltip-box"><span id="wac-tooltip-text">{{tooltip}}</span></div>
</div>
<div>
<nav id="context-menuKnob" class="context-menu">
<ul class="context-menu__items">
<li class="context-menu__item" id="context-menu-learn" on-click="onClickLearn">
Learn
</li>
<li class="context-menu__item" on-click="onClickClear">
Clear
</li>
<li class="context-menu__item" on-click="toggleMenuOff">
Close
</li>
</ul>
</nav>
</div>
</template>
<script>
class WebaudioKnob extends Polymer.Element {
constructor() {
super();
}
static get is() {
return 'webaudio-knob';
}
static get properties() {
return {
/* properties meta data object just like 1.x */
src: {
type: String,
value: null,
observer: 'setupImage'
},
bgsrc: {
type: String,
value: null,
observer: 'setupImage'
},
value: {
type: Number,
value: 0,
observer: 'updateValue'
},
defvalue: {
type: Number,
value: 0
},
min: {
type: Number,
value: 0
},
max: {
type: Number,
value: 100
},
step: {
type: Number,
value: 1
},
units: {
type: String,
value: null
},
width: {
type: Number,
value: 64,
observer: 'layout'
},
height: {
type: Number,
value: 64,
observer: 'layout'
},
diameter: {
type: Number,
value: null,
observer: 'layout'
},
sprites: {
type: Number,
value: 0
},
sensitivity: {
type: Number,
value: 1
},
valuetip: {
type: Number,
value: 1
},
tooltip: {
type: String,
value: null
},
colors: {
type: String,
value: '#e00;#000;#000',
observer: 'setupImage'
},
enable: {
type: Number,
value: 1
},
fconv: {
type: String,
value: null
},
// for midi learn
midilearn: {
type: Boolean,
value: false
},
midicc: {
type: String
},
compId: {
type: Number
},
midiMode: {
type: String,
value: "not"
},
midiControllers: {
type: Array,
value: []
},
menu: {
type: String,
value: null
},
menuVisible: {
type: Boolean,
value: false
},
taskItemClassName: {
type: String,
value: "knob"
},
lastShift: {
type: Boolean,
value: false
},
contextMenuLinkClassName: {
type: String,
value: "context-menu__link"
},
contextMenuActive: {
type: String,
value: "context-menu--active"
},
//windowHeigth: {type:Number,value:null},
webAudioControllerWithMenu: {
type: String,
value: null
}
}
}
log2(num) {
var log = Math.log(num) / Math.LN2;
return log;
}
ready() {
super.ready();
if (this.defvalue === null)
this.defvalue = this.value;
this.digits = 0;
var body = this.$['wac-body'];
var knb = this.$['wac-knob'];
knb.addEventListener('DOMMouseScroll', this.wheel.bind(this), false);
knb.addEventListener('wheel', this.wheel.bind(this), false);
knb.addEventListener('mousewheel', this.wheel.bind(this), false);
knb.addEventListener('mousedown', this.pointerdown.bind(this), false);
knb.addEventListener('touchstart', this.pointerdown.bind(this), false);
knb.addEventListener('mouseover', this.pointerover.bind(this), false);
knb.addEventListener('mouseout', this.pointerout.bind(this), false);
this.setupImage();
knb.style.backgroundSize = '100% ' + ((this.sprites + 1) * 100) + '%';
if (this.step && this.step < 1) {
for (var n = this.step; n < 1; n *= 10)
++this.digits;
}
this.minval = this.min;
this.maxval = this.max;
if (this.log) {
if (this.minval == 0)
this.minval = 0.001;
this.min = log2(this.minval);
this.max = log2(this.maxval);
this.setValue(log2(this.value));
this.ctlStep = 0.0001;
} else {
this.ctlStep = this.step;
}
/*
if (this.fconv)
this.computedValue = this.fconv(this.value);
else
this.computedValue = this.value;
this.valuestr = this.computedValue + (this.units ? this.units : "");
this.redraw();
// this.dispatchEvent(new CustomEvent('change', {
// bubbles: true,
// composed: true
// }));
*/
this.updateValue();
// context menu
this.compId = Date.now() + Math.random();
if (this.midilearn) {
knb.addEventListener("contextmenu", this.positionContextMenu.bind(this), false);
window.addEventListener('keyup', this.keyupListener.bind(this), false);
window.addEventListener('resize', this.resizeListener.bind(this), false);
this.menu = this.$["context-menuKnob"];
}
if (this.midicc) {
// parse midi cc value
// for the moment only one value
// of type midicc="3.2" -> use midi ch(3) +
// midi cc#2
var ch = parseInt(this.midicc.substring(0, this.midicc.lastIndexOf("."))) - 1;
var cc = parseInt(this.midicc.substring(this.midicc.lastIndexOf(".") + 1));
this.addMidiController(ch, cc);
}
}
setupImage() {
var body = this.$['wac-body'];
var knb = this.$['wac-knob'];
if (this.colors)
this.coltab = this.colors.split(";");
else
this.coltab = ["#e00", "#000", "#000"];
switch (this.coltab.length) {
case 1:
this.coltab[1] = this.coltab[2] = "#000";
break;
case 2:
this.coltab[2] = this.coltab[1];
break;
}
if (this.bgsrc)
body.style.background = 'url(' + this.bgsrc + ')';
if (this.src)
knb.style.background = 'url(' + this.src + ')';
else {
knb.style.background = 'url(data:image/svg+xml,%3csvg%20xmlns%3d%22http%3a%2f%2fwww%2ew3%2eorg%2f2000%2fsvg%22%20version%3d%221%2e1%22%20viewBox%3d%220%200%2010%2010%22%20preserveAspectRatio%3d%22none%22%3e%0d%0a%3cline%20x1%3d%225%22%20y1%3d%22%2e5%22%20x2%3d%225%22%20y2%3d%224%22%20stroke%3d%22' + encodeURIComponent(this.coltab[0]) + '%22%20stroke%2dwidth%3d%22%2e8%22%20stroke%2dlinecap%3d%22round%22%2f%3e%0d%0a%3c%2fsvg%3e)';
body.style.background = 'url(data:image/svg+xml,%3csvg%20xmlns%3d%22http%3a%2f%2fwww%2ew3%2eorg%2f2000%2fsvg%22%20version%3d%221%2e1%22%20viewBox%3d%220%200%2010%2010%22%20preserveAspectRatio%3d%22none%22%3e%0d%0a%3cradialGradient%20id%3d%22g0%22%20fx%3d%22%2e3%22%20fy%3d%22%2e3%22%3e%3cstop%20offset%3d%220%22%20stop%2dcolor%3d%22' + encodeURIComponent(this.coltab[2]) + '%22%2f%3e%3cstop%20offset%3d%22%2e75%22%20stop%2dcolor%3d%22' + encodeURIComponent(this.coltab[1]) + '%22%2f%3e%3c%2fradialGradient%3e%0d%0a%3ccircle%20cx%3d%225%22%20cy%3d%225%22%20r%3d%225%22%20fill%3d%22url%28%23g0%29%22%2f%3e%0d%0a%3c%2fsvg%3e)';
this.sprites = 0;
}
}
preventScroll(e) {
e.preventDefault();
}
pointerdown(e) {
if (!this.enable)
return;
if (e.touches)
e = e.touches[0];
this.boundPointermove = this.pointermove.bind(this);
this.boundCancel = this.cancel.bind(this);
if (e.ctrlKey || e.metaKey) {
this.setValue(parseFloat(this.defvalue));
} else {
this.startPosX = e.pageX;
this.startPosY = e.pageY;
this.startVal = this.value;
window.addEventListener('mousemove', this.boundPointermove, true);
window.addEventListener('touchmove', this.boundPointermove, true);
}
window.addEventListener('mouseup', this.boundCancel, true);
window.addEventListener('touchend', this.boundCancel, true);
window.addEventListener('touchcancel', this.boundCancel, true);
document.body.addEventListener('touchstart', this.preventScroll);
this.press = this.vtflag = 1;
this.ttflag = 0;
this.showtip();
e.preventDefault();
e.stopPropagation();
return false;
}
pointermove(e) {
if (e.touches)
e = e.touches[0];
if (this.lastShift !== e.shiftKey) {
this.lastShift = e.shiftKey;
this.startPosX = e.pageX;
this.startPosY = e.pageY;
this.startVal = this.value;
}
var offset = (this.startPosY - e.pageY - this.startPosX + e.pageX) * this.sensitivity;
this.value = this.min + ((((this.startVal + (this.max - this.min) * offset / ((e.shiftKey ? 4 : 1) * 128)) - this.min) / this.ctlStep) | 0) * this.ctlStep;
e.preventDefault();
e.stopPropagation();
return false;
}
cancel(e) {
this.press = this.vtflag = 0;
this.showtip();
this.startPosX = this.startPosY = null;
window.removeEventListener('mousemove', this.boundPointermove, true);
window.removeEventListener('touchmove', this.boundPointermove, true);
window.removeEventListener('mouseup', this.boundCancel, true);
window.removeEventListener('touchend', this.boundCancel, true);
window.removeEventListener('touchcancel', this.boundCancel, true);
document.body.removeEventListener('touchstart', this.preventScroll, false);
}
pointerover(e) {
if (typeof (e.buttons) != "undefined")
var btn = e.buttons;
else
var btn = e.which;
if (btn == 0)
this.ttflag = 1;
setTimeout(this.showtip.bind(this), 700);
}
pointerout(e) {
this.ttflag = 0;
if (this.press == 0)
this.vtflag = 0;
this.showtip();
}
showtip() {
var vs = this.$['wac-valuetip'].style;
var ts = this.$['wac-tooltip-box'].style;
if (this.valuetip && this.vtflag) {
if (this.vtim) {
clearTimeout(this.vtim);
this.vtim = null;
}
vs.display = "inline-block";
setTimeout(function () {
this.opacity = 0.9;
}.bind(vs), 50);
} else if (vs.opacity) {
vs.opacity = 0;
this.vtim = setTimeout(function () {
if (this.vtflag == 0) this.$['wac-valuetip'].style.display = "none";
}.bind(this), 500);
}
if (this.tooltip && this.ttflag) {
ts.display = "block";
setTimeout(function () {
this.opacity = 0.8;
}.bind(ts), 100);
} else if (ts.opacity) {
ts.opacity = 0;
setTimeout(function () {
this.display = "none";
}.bind(ts), 500);
}
}
wheel(e) {
var delta = 0;
if (!e) {
e = window.event;
}
if (e.wheelDelta) {
delta = e.wheelDelta / 120;
} else if (e.detail) {
delta = -e.detail / 3;
} else if (e.deltaY) {
delta = -e.deltaY / 120;
}
if (e.shiftKey) {
delta *= 0.2;
}
delta *= (this.max - this.min) * 0.05;
if (Math.abs(delta) < this.step) {
delta = (delta > 0) ? this.step : -this.step;
}
this.value += delta;
this.ttflag = 0;
this.vtflag = 1;
this.showtip();
e.preventDefault();
}
setValue(value, fire) {
if (!fire) this.valueold = value;
this.value = value;
}
updateValue() {
var value = parseFloat(this.value);
if (!isNaN(value)) {
this.value = value < this.min ? this.min : value > this.max ? this.max : value;
this.computedValue = (this.fconv ? eval("(" + this.fconv + ")")(this.value) : this.value);
if (typeof (this.computedValue) == "number") {
var valueNumber = (this.log) ? Math.pow(2, this.computedValue) : this.computedValue;
this.valuestr = valueNumber.toFixed(this.digits) + (this.units ? this.units : "");
if ((this.digits == 0) && (valueNumber > 1000)) {
valueNumber = valueNumber / 1000;
this.valuestr = valueNumber.toFixed((valueNumber < 10) ? 2 : 1) + "k" + (this.units ? this.units : "");
}
} else {
this.valuestr = this.computedValue + (this.units ? this.units : "");
}
}
this.redraw();
if (this.value != this.valueold) {
this.valueold = this.value;
this.dispatchEvent(new CustomEvent('change', {
bubbles: true,
composed: true
}));
}
}
layout() {
var knobstyle = this.$['wac-knob'].style;
var bodystyle = this.$['wac-body'].style;
if (this.diameter)
this.width = this.height = this.diameter;
if (this.width)
bodystyle.width = knobstyle.width = this.width + "px";
if (this.height)
bodystyle.height = knobstyle.height = this.height + "px";
}
redraw() {
var range = this.max - this.min;
var style = this.$['wac-knob'].style;
if (this.sprites) {
var offset = ((this.sprites * (this.value - this.min) / range) | 0) * this.height;
style.backgroundPosition = "0px -" + offset + "px";
style.transform = 'rotate(0deg)';
} else {
var deg = 270 * ((this.value - this.min) / range - 0.5);
style.transform = 'rotate(' + deg + 'deg)';
}
}
// MIDILEARN MENU
positionContextMenu(e) {
e.preventDefault();
e.stopPropagation();
this.toggleMenuOn(e);
this.positionMenu(e);
}
keyupListener(e) {
if (e.keyCode === 27 && this.menuVisible) {
console.log("keyup");
// Pressing ESC will close the menu
this.toggleMenuOff(e);
}
}
resizeListener(e) {
// Hide menu if the window is resized
console.log("resize");
this.toggleMenuOff(e);
}
onClickLearn(e) {
// Change label to "listening"
//e.target.textContent = "Listening...";
var menuItemLearn = this.$["context-menu-learn"];
menuItemLearn.innerHTML = 'Listening...';
this.midiMode = 'learn';
}
onClickClear(e) {
this.toggleMenuOff(e);
this.midiControllers = [];
}
toggleMenuOn(e) {
if (!this.menuVisible) {
this.menuVisible = true;
this.menu.classList.add(this.contextMenuActive);
}
}
toggleMenuOff(e) {
if (this.menuVisible) {
// Change the "listening..." label back to "learn"
var menuItemLearn = this.$["context-menu-learn"];
menuItemLearn.innerHTML = 'Learn';
this.menuVisible = false;
this.menu.classList.remove(this.contextMenuActive);
}
}
// Get mouse pointer position
getPosition(e) {
var rect = e.target.getBoundingClientRect();
var posx = e.clientX - rect.left;
var posy = e.clientY - rect.top;
//var posx = e.pageX - rect.width;
//var posy = e.pageY - rect.height;
return {
x: posx,
y: posy
}
}
positionMenu(e) {
let clickCoords = this.getPosition(e),
menuWidth = this.menu.offsetWidth + 1,
menuHeight = this.menu.offsetHeight + 1;
if ((window.innerWidth - clickCoords.x) < menuWidth) {
this.menu.style.left = window.innerWidth - menuWidth + "px";
} else {
this.menu.style.left = clickCoords.x + "px";
}
if ((window.innerHeight - clickCoords.y) < menuHeight) {
this.menu.style.top = window.innerHeight - menuHeight + "px";
} else {
this.menu.style.top = clickCoords.y + "px";
}
}
addMidiController(channel, cc) {
if (this.listeningToThisMidiController(channel, cc)) return;
this.midiControllers.push({
'channel': channel,
'cc': cc,
'compId': this.compId,
'tooltip': this.tooltip
});
console.log("Added mapping for channel=" + channel + " cc=" + cc + " tooltip=" + this.tooltip);
}
listeningToThisMidiController(channel, cc) {
for (var i = 0; i < this.midiControllers.length; i++) {
var c = this.midiControllers[i];
if (((c.channel === channel || c.channel < 0) && c.cc === cc && c.compId === this.compId)) {
return true;
}
}
return false;
}
processMidiEvent(event) {
// Message is a cc
// Identify the controller
var data = event.data;
var channel = data[0] & 0xf;
var controlNumber = data[1];
if (this.midiMode === 'learn') {
// add this controller to the list of controllers we're
// listening to
this.addMidiController(channel, controlNumber);
// hide menu
this.toggleMenuOff(event);
// set back mode to normal
this.midiMode = 'normal';
}
// are we listening to this controller ?
if (this.listeningToThisMidiController(channel, controlNumber)) {
// midi event value
var val = event.data[2];
// adjust taking into account the min and max attributes of the audiocontrol
var adjustedValue = this.map(val, 0, 127, this.min, this.max);
// set the webaudiocontrol value and pass true as second
// argument to make it fire an input event as if the
// button was activated in the browser
this.setValue(adjustedValue, true);
}
}
// maps a value from [istart, istop] into [ostart, ostop]
map(value, istart, istop, ostart, ostop) {
return ostart + (ostop - ostart) * ((value - istart) / (istop - istart));
}
}
customElements.define(WebaudioKnob.is, WebaudioKnob);
</script>
</dom-module>
<dom-module id="webaudio-slider">
<template>
<div class="wac-body" id="wac-body">
<div id="wac-knob"></div>
<span id="wac-valuetip">{{valuestr}}</span>
<div id="wac-tooltip-box"><span id="wac-tooltip-text">{{tooltip}}</span></div>
</div>
<div>
<nav id="context-menuKnob" class="context-menu">
<ul class="context-menu__items">
<li class="context-menu__item" id="context-menu-learn" on-click="onClickLearn">
Learn
</li>
<li class="context-menu__item" on-click="onClickClear">
Clear
</li>
<li class="context-menu__item" on-click="toggleMenuOff">
Close
</li>
</ul>
</nav>
</div>
<style>
:host {
user-select: none;
display: inline-block;
font-family: sans-serif;
font-size: 11px;
padding: 0;
margin: 0;
}
#wac-body {
position: relative;
display: inline-block;
}
#wac-knob {
position: relative;
}
#wac-valuetip {
position: absolute;
top: -20px;
left: 0;
z-index: 10;
display: none;
opacity: 0;
border: solid 1px #666;
background-color: #fff;
color: #000;
border-radius: 4px;
padding: 3px 8px;
transition: opacity 0.3s;
}
#wac-tooltip-box {
position: absolute;
bottom: -24px;
left: 20px;
z-index: 10;
display: none;
opacity: 0;
width: 200px;
transition: opacity 0.5s;
}
#wac-tooltip-text {
display: inline-block;
border: solid 0px #666;
background-color: #fff;
color: #000;
border-radius: 5px;
padding: 5px;
}
/* context midilearn menu */
.context-menu {
display: none;
position: absolute;
z-index: 10;
padding: 12px 0;
width: 240px;
background-color: #fff;
border: solid 1px #dfdfdf;
box-shadow: 1px 1px 2px #cfcfcf;
}
.context-menu--active {
display: block;
}
.context-menu__items {
list-style: none;
margin: 0;
padding: 0;
}
.context-menu__item {
display: block;
margin-bottom: 4px;
padding: 4px 12px;
color: #0066aa;
text-decoration: none;
}
.context-menu__item:last-child {
margin-bottom: 0;
}
.context-menu__item:hover {
color: #fff;
background-color: #0066aa;
}
</style>
</template>
<script>
class WebaudioSlide extends Polymer.Element {
constructor() {
super();
}
static get is() {
return "webaudio-slider";
}
static get properties() {
return {
value: {
type: Number,
value: 0,
observer: 'updateValue'
},
units: {
type: String,
value: null
},
defvalue: {
type: Number,
value: 0
},
min: {
type: Number,
value: 0
},
max: {
type: Number,
value: 100
},
step: {
type: Number,
value: 1
},
width: {
type: Number,
value: null,
observer: 'layout'
},
height: {
type: Number,
value: null,
observer: 'layout'
},
knobwidth: {
type: Number,
value: null
},
knobheight: {
type: Number,
value: null
},
ditchlength: {
type: Number,
value: null,
observer: 'layout'
},
length: {
type: Number,
value: 0
},
weight: {
type: Number,
value: 0
},
direction: {
type: String,
value: 'vert',
observer: 'layout'
},
knobsrc: {
type: String,
value: null,
observer: 'setupImage'
},
sensitivity: {
type: Number,
value: 1
},
digits: {
type: Number,
value: 0
},
src: {
type: String,
value: ""
},
valuetip: {
type: Number,
value: 1
},
tooltip: {
type: String,
value: null
},
colors: {
type: String,
value: null,
observer: 'setupImage'
},
enable: {
type: Number,
value: 1
},
fconv: {
type: String,
value: null
},
// for midi learn
midilearn: {
type: String
},
midicc: {
type: String
},
compId: {
type: Number
},
midiMode: {
type: String,
value: "not"
},
midiControllers: {
type: Array,
value: []
},
menu: {
type: String,
value: null
},
menuVisible: {
type: Boolean,
value: false
},
taskItemClassName: {
type: String,
value: "knob"
},
lastShift: {
type: Boolean,
value: false
},
contextMenuLinkClassName: {
type: String,
value: "context-menu__link"
},
contextMenuActive: {
type: String,
value: "context-menu--active"
},
//windowHeigth: {type:Number,value:null},
webAudioControllerWithMenu: {
type: String,
value: null
}
}
}