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webaudio-controls.js
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webaudio-controls.js
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/* *
*
* WebAudio-Controls is based on
* webaudio-knob by Eiji Kitamura https://google.com/+agektmr
* webaudio-slider by RYoya Kawai https://plus.google.com/108242669191458983485/posts
* webaudio-switch by Keisuke Ai https://d.hatena.ne.jp/aike/
* Integrated and enhanced by g200kg https://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
*
* https://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.
*
* */
// EDITED BY: Seán Óg Durack Monks (Mangoshi)
// EDITS MADE: Keydown logic has been commented-out, as it conflicts with the keydown logic of the main app.
if(window.customElements){
let styles=document.createElement("style");
styles.innerHTML=
`#webaudioctrl-context-menu {
display: none;
position: absolute;
z-index: 10;
padding: 0;
width: 100px;
color:#eee;
background-color: #268;
border: solid 1px #888;
box-shadow: 1px 1px 2px #888;
font-family: sans-serif;
font-size: 11px;
line-height:1.7em;
text-align:center;
cursor:pointer;
color:#fff;
list-style: none;
}
#webaudioctrl-context-menu.active {
display: block;
}
.webaudioctrl-context-menu__item {
display: block;
margin: 0;
padding: 0;
color: #000;
background-color:#eee;
text-decoration: none;
}
.webaudioctrl-context-menu__title{
font-weight:bold;
}
.webaudioctrl-context-menu__item:last-child {
margin-bottom: 0;
}
.webaudioctrl-context-menu__item:hover {
background-color: #b8b8b8;
}
`;
document.head.appendChild(styles);
let midimenu=document.createElement("ul");
midimenu.id="webaudioctrl-context-menu";
midimenu.innerHTML=
`<li class="webaudioctrl-context-menu__title">MIDI Learn</li>
<li class="webaudioctrl-context-menu__item" id="webaudioctrl-context-menu-learn" onclick="webAudioControlsWidgetManager.contextMenuLearn()">Learn</li>
<li class="webaudioctrl-context-menu__item" onclick="webAudioControlsWidgetManager.contextMenuClear()">Clear</li>
<li class="webaudioctrl-context-menu__item" onclick="webAudioControlsWidgetManager.contextMenuClose()">Close</li>
`;
let opt={
useMidi:0,
preserveMidiLearn:0,
preserveValue:0,
midilearn:0,
mididump:0,
outline:null,
knobSrc:null,
knobSprites:null,
knobWidth:null,
knobHeight:null,
knobDiameter:null,
knobColors:"#e00;#000;#fff",
sliderSrc:null,
sliderWidth:null,
sliderHeight:null,
sliderKnobSrc:null,
sliderKnobWidth:null,
sliderKnobHeight:null,
sliderDitchlength:null,
sliderColors:"#e00;#333;#fcc",
switchWidth:null,
switchHeight:null,
switchDiameter:null,
switchColors:"#e00;#000;#fcc",
paramWidth:null,
paramHeight:null,
paramFontSize:9,
paramColors:"#fff;#000",
valuetip:0,
xypadColors:"#e00;#000;#fcc",
};
if(window.WebAudioControlsOptions)
Object.assign(opt,window.WebAudioControlsOptions);
class WebAudioControlsWidget extends HTMLElement{
constructor(){
super();
this.addEventListener("keydown",this.keydown);
this.addEventListener("mousedown",this.pointerdown,{passive:false});
this.addEventListener("touchstart",this.pointerdown,{passive:false});
this.addEventListener("wheel",this.wheel,{passive:false});
this.addEventListener("mouseover",this.pointerover);
this.addEventListener("mouseout",this.pointerout);
this.addEventListener("contextmenu",this.contextMenu);
this.hover=this.drag=0;
document.body.appendChild(midimenu);
this.basestyle=`
.webaudioctrl-tooltip{
display:inline-block;
position:absolute;
margin:0 -1000px;
z-index: 999;
background:#eee;
color:#000;
border:1px solid #666;
border-radius:4px;
padding:5px 10px;
text-align:center;
left:0; top:0;
font-size:11px;
opacity:0;
visibility:hidden;
}
.webaudioctrl-tooltip:before{
content: "";
position: absolute;
top: 100%;
left: 50%;
margin-left: -8px;
border: 8px solid transparent;
border-top: 8px solid #666;
}
.webaudioctrl-tooltip:after{
content: "";
position: absolute;
top: 100%;
left: 50%;
margin-left: -6px;
border: 6px solid transparent;
border-top: 6px solid #eee;
}
`;
this.onblur=()=>{
this.elem.style.outline="none";
}
this.onfocus=()=>{
switch(+this.outline){
case null:
case 0:
this.elem.style.outline="none";
break;
case 1:
this.elem.style.outline="1px solid #444";
break;
default:
this.elem.style.outline=this.outline;
}
}
}
sendEvent(ev){
let event;
event=document.createEvent("HTMLEvents");
event.initEvent(ev,false,true);
this.dispatchEvent(event);
}
getAttr(n,def){
let v=this.getAttribute(n);
if(v==null) return def;
switch(typeof(def)){
case "number":
if(v=="true") return 1;
v=+v;
if(isNaN(v)) return 0;
return v;
}
return v;
}
showtip(d){
function valstr(x,c,type){
switch(type){
case "x": return (x|0).toString(16);
case "X": return (x|0).toString(16).toUpperCase();
case "d": return (x|0).toString();
case "f": return parseFloat(x).toFixed(c);
case "s": return x.toString();
}
return "";
}
function numformat(s,x){
let i=s.indexOf("%");
let j=i+1;
if(i<0)
j=s.length;
let c=[0,0],type=0,m=0,r="";
if(s.indexOf("%s")>=0){
return s.replace("%s",x);
}
for(;j<s.length;++j){
if("dfxXs".indexOf(s[j])>=0){
type=s[j];
break;
}
if(s[j]==".")
m=1;
else
c[m]=c[m]*10+parseInt(s[j]);
}
r=valstr(x,c[1],type);
if(c[0]>0)
r=(" "+r).slice(-c[0]);
r=s.replace(/%.*[xXdfs]/,r);
return r;
}
let s=this.tooltip;
if(this.drag||this.hover){
if(this.valuetip){
if(s==null)
s=`%s`;
else if(s.indexOf("%")<0)
s+=` : %s`;
}
if(s){
this.ttframe.innerHTML=numformat(s,this.convValue);
this.ttframe.style.display="inline-block";
this.ttframe.style.width="auto";
this.ttframe.style.height="auto";
this.ttframe.style.transition="opacity 0.5s "+d+"s,visibility 0.5s "+d+"s";
this.ttframe.style.opacity=0.9;
this.ttframe.style.visibility="visible";
let rc=this.getBoundingClientRect(),rc2=this.ttframe.getBoundingClientRect(),rc3=document.documentElement.getBoundingClientRect();
this.ttframe.style.left=((rc.width-rc2.width)*0.5+1000)+"px";
this.ttframe.style.top=(-rc2.height-8)+"px";
return;
}
}
this.ttframe.style.transition="opacity 0.1s "+d+"s,visibility 0.1s "+d+"s";
this.ttframe.style.opacity=0;
this.ttframe.style.visibility="hidden";
}
setupLabel(){
this.labelpos=this.getAttr("labelpos", "bottom 0px");
const lpos=this.labelpos.split(" ");
let offs="";
if(lpos.length==3)
offs=`translate(${lpos[1]},${lpos[2]})`;
this.label.style.position="absolute";
switch(lpos[0]){
case "center":
this.label.style.top="50%";
this.label.style.left="50%";
this.label.style.transform=`translate(-50%,-50%) ${offs}`;
break;
case "right":
this.label.style.top="50%";
this.label.style.left="100%";
this.label.style.transform=`translateY(-50%) ${offs}`;
break;
case "left":
this.label.style.top="50%";
this.label.style.left="0%";
this.label.style.transform=`translate(-100%,-50%) ${offs}`;
break;
case "bottom":
this.label.style.top="100%";
this.label.style.left="50%";
this.label.style.transform=`translateX(-50%) ${offs}`;
break;
case "top":
this.label.style.top="0%";
this.label.style.left="50%";
this.label.style.transform=`translate(-50%,-100%) ${offs}`;
break;
}
}
pointerover(e) {
this.hover=1;
this.showtip(0.6);
}
pointerout(e) {
this.hover=0;
this.showtip(0);
}
contextMenu(e){
if(window.webAudioControlsWidgetManager && this.midilearn)
webAudioControlsWidgetManager.contextMenuOpen(e,this);
e.preventDefault();
e.stopPropagation();
}
setMidiController(channel, cc) {
if (this.listeningToThisMidiController(channel, cc)) return;
this.midiController={ 'channel': channel, 'cc': cc};
console.log("Added mapping for channel=" + channel + " cc=" + cc + " tooltip=" + this.tooltip);
}
listeningToThisMidiController(channel, cc) {
const c = this.midiController;
if((c.channel === channel || c.channel < 0) && c.cc === cc)
return true;
return false;
}
processMidiEvent(event){
const channel = event.data[0] & 0xf;
const controlNumber = event.data[1];
if(this.midiMode == 'learn') {
this.setMidiController(channel, controlNumber);
webAudioControlsWidgetManager.contextMenuClose();
this.midiMode = 'normal';
webAudioControlsWidgetManager.preserveMidiLearn();
}
if(this.listeningToThisMidiController(channel, controlNumber)) {
if(this.tagName=="WEBAUDIO-SWITCH"){
switch(this.type){
case "toggle":
if(event.data[2]>=64)
this.setValue(1-this.value,true);
break;
case "kick":
this.setValue(event.data[2]>=64?1:0);
break;
case "radio":
let els=document.querySelectorAll("webaudio-switch[type='radio'][group='"+this.group+"']");
for(let i=0;i<els.length;++i){
if(els[i]==this)
els[i].setValue(1);
else
els[i].setValue(0);
}
break;
}
}
else{
const val = this.min+(this.max-this.min)*event.data[2]/127;
this.setValue(val, true);
}
}
}
}
try{
customElements.define("webaudio-knob", class WebAudioKnob extends WebAudioControlsWidget {
constructor(){
super();
}
connectedCallback(){
let root;
if(this.attachShadow)
root=this.attachShadow({mode: 'open'});
else
root=this;
root.innerHTML=
`<style>
${this.basestyle}
:host{
display:inline-block;
margin:0;
padding:0;
cursor:pointer;
font-family: sans-serif;
font-size: 11px;
}
.webaudio-knob-body{
display:inline-block;
position:relative;
margin:0;
padding:0;
vertical-align:bottom;
white-space:pre;
}
</style>
<div class='webaudio-knob-body' tabindex='1' touch-action='none'><div class='webaudioctrl-tooltip'></div><div part="label" class="webaudioctrl-label"><slot></slot></div></div>
`;
this.elem=root.childNodes[2];
this.ttframe=this.elem.firstChild;
this.label=this.ttframe.nextSibling;
this.enable=this.getAttr("enable",1);
this._src=this.getAttr("src",opt.knobSrc); if (!this.hasOwnProperty("src")) Object.defineProperty(this,"src",{get:()=>{return this._src},set:(v)=>{this._src=v;this.setupImage()}});
this._value=this.getAttr("value",0); if (!this.hasOwnProperty("value")) Object.defineProperty(this,"value",{get:()=>{return this._value},set:(v)=>{this._value=v;this.redraw()}});
this.defvalue=this.getAttr("defvalue",this._value);
this._min=this.getAttr("min",0); if (!this.hasOwnProperty("min")) Object.defineProperty(this,"min",{get:()=>{return this._min},set:(v)=>{this._min=+v;this.redraw()}});
this._max=this.getAttr("max",100); if (!this.hasOwnProperty("max")) Object.defineProperty(this,"max",{get:()=>{return this._max},set:(v)=>{this._max=+v;this.redraw()}});
this._step=this.getAttr("step",1); if (!this.hasOwnProperty("step")) Object.defineProperty(this,"step",{get:()=>{return this._step},set:(v)=>{this._step=+v;this.redraw()}});
this._sprites=this.getAttr("sprites",opt.knobSprites); if (!this.hasOwnProperty("sprites")) Object.defineProperty(this,"sprites",{get:()=>{return this._sprites},set:(v)=>{this._sprites=v;this.setupImage()}});
this._width=this.getAttr("width", null); if (!this.hasOwnProperty("width")) Object.defineProperty(this,"width",{get:()=>{return this._width},set:(v)=>{this._width=v;this.setupImage()}});
this._height=this.getAttr("height", null); if (!this.hasOwnProperty("height")) Object.defineProperty(this,"height",{get:()=>{return this._height},set:(v)=>{this._height=v;this.setupImage()}});
this._diameter=this.getAttr("diameter", null); if (!this.hasOwnProperty("diameter")) Object.defineProperty(this,"diameter",{get:()=>{return this._diameter},set:(v)=>{this._diameter=v;this.setupImage()}});
this._colors=this.getAttr("colors",opt.knobColors); if (!this.hasOwnProperty("colors")) Object.defineProperty(this,"colors",{get:()=>{return this._colors},set:(v)=>{this._colors=v;this.setupImage()}});
this.outline=this.getAttr("outline",opt.outline);
this.setupLabel();
this.log=this.getAttr("log",0);
this.sensitivity=this.getAttr("sensitivity",1);
this.valuetip=this.getAttr("valuetip",opt.valuetip);
this.tooltip=this.getAttr("tooltip",null);
this.conv=this.getAttr("conv",null);
if(this.conv){
const x=this._value;
this.convValue=eval(this.conv);
if(typeof(this.convValue)=="function")
this.convValue=this.convValue(x);
}
else
this.convValue=this._value;
this.midilearn=this.getAttr("midilearn",opt.midilearn);
this.midicc=this.getAttr("midicc",null);
this.midiController={};
this.midiMode="normal";
if(this.midicc) {
let ch = parseInt(this.midicc.substring(0, this.midicc.lastIndexOf("."))) - 1;
let cc = parseInt(this.midicc.substring(this.midicc.lastIndexOf(".") + 1));
this.setMidiController(ch, cc);
}
if(this.midilearn && this.id){
if(webAudioControlsWidgetManager && webAudioControlsWidgetManager.midiLearnTable){
const ml=webAudioControlsWidgetManager.midiLearnTable;
for(let i=0; i < ml.length; ++i){
if(ml[i].id==this.id){
this.setMidiController(ml[i].cc.channel, ml[i].cc.cc);
break;
}
}
}
}
this.setupImage();
this.digits=0;
if(this.step && this.step < 1) {
for(let n = this.step ; n < 1; n *= 10)
++this.digits;
}
this._setValue(this._value);
this.coltab=["#e00","#000","#000"];
if(window.webAudioControlsWidgetManager)
window.webAudioControlsWidgetManager.addWidget(this);
}
disconnectedCallback(){}
setupImage(){
this.kw=this._width||this._diameter||opt.knobWidth||opt.knobDiameter;
this.kh=this._height||this._diameter||opt.knobHeight||opt.knobDiameter;
if(!this.src){
if(this.colors)
this.coltab = this.colors.split(";");
if(!this.coltab)
this.coltab=["#e00","#000","#000"];
let svg=
`<svg xmlns="https://www.w3.org/2000/svg" width="64" height="6464" preserveAspectRatio="none">
<defs>
<filter id="f1">
<feGaussianBlur in="SourceGraphic" stdDeviation="0.8" />
</filter>
<radialGradient id="g1" cx="50%" cy="10%">
<stop offset="0%" stop-color="${this.coltab[2]}"/>
<stop offset="100%" stop-color="${this.coltab[1]}"/>
</radialGradient>
<linearGradient id="g2" x1="0%" y1="0%" x2="0%" y2="100%">
<stop offset="0%" stop-color="#000" stop-opacity="0"/>
<stop offset="100%" stop-color="#000" stop-opacity="0.3"/>
</linearGradient>
<g id="B">
<circle cx="32" cy="32" r="31" fill="#000"/>
<circle cx="32" cy="32" r="29" fill="url(#g1)"/>
<circle cx="32" cy="32" r="29" fill="url(#g2)"/>
<circle cx="32" cy="32" r="25" fill="${this.coltab[1]}" filter="url(#f1)"/>
<circle cx="32" cy="32" r="29" fill="url(#g2)"/>
</g>
<line id="K" x1="32" y1="25" x2="32" y2="11" stroke-linecap="round" stroke-width="6" stroke="${this.coltab[0]}"/>
</defs>`;
for(let i=0;i<101;++i){
svg += `<use href="#B" y="${64*i}"/><use href="#K" y="${64*i}" transform="rotate(${(-135+270*i/101).toFixed(2)},32,${64*i+32})"/>`;
}
svg += "</svg>";
this.elem.style.backgroundImage = "url(data:image/svg+xml;base64,"+btoa(svg)+")";
if(this.kw==null) this.kw=64;
if(this.kh==null) this.kh=64;
this.elem.style.backgroundSize = `${this.kw}px ${this.kh*101}px`;
this.elem.style.width=this.kw+"px";
this.elem.style.height=this.kh+"px";
this.style.height=this.kh+"px";
this.fireflag=true;
this.redraw();
return;
}
else{
this.img=new Image();
this.img.onload=()=>{
this.elem.style.backgroundImage = "url("+(this.src)+")";
if(this._sprites==null)
this._sprites=this.img.height/this.img.width - 1;
else
this._sprites=+this._sprites;
if(this.kw==null) this.kw=this.img.width;
if(this.kh==null) this.kh=this.img.height/(this.sprites+1);
if(!this.sprites)
this.elem.style.backgroundSize = "100% 100%";
else
this.elem.style.backgroundSize = `${this.kw}px ${this.kh*(this.sprites+1)}px`;
this.elem.style.width=this.kw+"px";
this.elem.style.height=this.kh+"px";
this.style.height=this.kh+"px";
this.redraw();
};
this.img.src=this.src;
}
}
redraw() {
let ratio;
this.digits=0;
if(this.step && this.step < 1) {
for(let n = this.step ; n < 1; n *= 10)
++this.digits;
}
if(this.value<this.min){
this.value=this.min;
}
if(this.value>this.max){
this.value=this.max;
}
if(this.log)
ratio = Math.log(this.value/this.min) / Math.log(this.max/this.min);
else
ratio = (this.value - this.min) / (this.max - this.min);
let style = this.elem.style;
let sp = this.src?this.sprites:100;
if(sp>=1){
let offset = (sp * ratio) | 0;
style.backgroundPosition = "0px " + (-offset*this.kh) + "px";
style.transform = 'rotate(0deg)';
} else {
let deg = 270 * (ratio - 0.5);
style.backgroundPosition="0px 0px";
style.transform = 'rotate(' + deg + 'deg)';
}
}
_setValue(v){
if(this.step)
v=(Math.round((v-this.min)/this.step))*this.step+this.min;
this._value=Math.min(this.max,Math.max(this.min,v));
if(this._value!=this.oldvalue){
this.fireflag=true;
this.oldvalue=this._value;
if(this.conv){
const x=this._value;
this.convValue=eval(this.conv);
if(typeof(this.convValue)=="function")
this.convValue=this.convValue(x);
}
else
this.convValue=this._value;
if(typeof(this.convValue)=="number"){
this.convValue=this.convValue.toFixed(this.digits);
}
this.redraw();
this.showtip(0);
return 1;
}
return 0;
}
setValue(v,f){
if(this._setValue(v) && f)
this.sendEvent("input"),this.sendEvent("change");
}
// keydown(e){
// const delta = this.step;
// if(delta==0)
// delta=1;
// switch(e.key){
// case "ArrowUp":
// this.setValue(this.value+delta,true);
// break;
// case "ArrowDown":
// this.setValue(this.value-delta,true);
// break;
// default:
// return;
// }
// e.preventDefault();
// e.stopPropagation();
// }
wheel(e) {
if (!this.enable)
return;
if(this.log){
let r=Math.log(this.value/this.min)/Math.log(this.max/this.min);
let d = (e.deltaY>0?-0.01:0.01);
if(!e.shiftKey)
d*=5;
r += d;
this.setValue(this.min*Math.pow(this.max/this.min,r),true);
}
else{
let delta=Math.max(this.step, (this.max-this.min)*0.05);
if(e.shiftKey)
delta=this.step?this.step:1;
delta=e.deltaY>0?-delta:delta;
this.setValue(+this.value+delta,true);
}
e.preventDefault();
e.stopPropagation();
}
pointerdown(ev){
if(!this.enable)
return;
let e=ev;
if(ev.touches){
e = ev.changedTouches[0];
this.identifier=e.identifier;
}
else {
if(e.buttons!=1 && e.button!=0)
return;
}
this.elem.focus();
this.drag=1;
this.showtip(0);
this.oldvalue=this._value;
let pointermove=(ev)=>{
let e=ev;
if(ev.touches){
for(let i=0;i<ev.touches.length;++i){
if(ev.touches[i].identifier==this.identifier){
e = ev.touches[i];
break;
}
}
}
if(this.lastShift !== e.shiftKey) {
this.lastShift = e.shiftKey;
this.startPosX = e.pageX;
this.startPosY = e.pageY;
this.startVal = this.value;
}
let offset = (this.startPosY - e.pageY - this.startPosX + e.pageX) * this.sensitivity;
if(this.log){
let r = Math.log(this.startVal / this.min) / Math.log(this.max / this.min);
r += offset/((e.shiftKey?4:1)*128);
if(r<0) r=0;
if(r>1) r=1;
this._setValue(this.min * Math.pow(this.max/this.min, r));
}
else{
this._setValue(this.min + ((((this.startVal + (this.max - this.min) * offset / ((e.shiftKey ? 4 : 1) * 128)) - this.min) / this.step) | 0) * this.step);
}
if(this.fireflag){
this.sendEvent("input");
this.fireflag=false;
}
if(e.preventDefault)
e.preventDefault();
if(e.stopPropagation)
e.stopPropagation();
return false;
}
let pointerup=(ev)=>{
let e=ev;
if(ev.touches){
for(let i=0;;){
if(ev.changedTouches[i].identifier==this.identifier){
break;
}
if(++i>=ev.changedTouches.length)
return;
}
}
this.drag=0;
this.showtip(0);
this.startPosX = this.startPosY = null;
window.removeEventListener('mousemove', pointermove);
window.removeEventListener('touchmove', pointermove, {passive:false});
window.removeEventListener('mouseup', pointerup);
window.removeEventListener('touchend', pointerup);
window.removeEventListener('touchcancel', pointerup);
document.body.removeEventListener('touchstart', preventScroll,{passive:false});
this.sendEvent("change");
}
let preventScroll=(e)=>{
e.preventDefault();
}
if(e.ctrlKey || e.metaKey)
this.setValue(this.defvalue,true);
else {
this.startPosX = e.pageX;
this.startPosY = e.pageY;
this.startVal = this.value;
window.addEventListener('mousemove', pointermove);
window.addEventListener('touchmove', pointermove, {passive:false});
}
window.addEventListener('mouseup', pointerup);
window.addEventListener('touchend', pointerup);
window.addEventListener('touchcancel', pointerup);
document.body.addEventListener('touchstart', preventScroll,{passive:false});
ev.preventDefault();
ev.stopPropagation();
return false;
}
});
} catch(error){
console.log("webaudio-knob already defined");
}
try{
customElements.define("webaudio-slider", class WebAudioSlider extends WebAudioControlsWidget {
constructor(){
super();
}
connectedCallback(){
let root;
if(this.attachShadow)
root=this.attachShadow({mode: 'open'});
else
root=this;
root.innerHTML=
`<style>
${this.basestyle}
:host{
display:inline-block;
position:relative;
margin:0;
padding:0;
font-family: sans-serif;
font-size: 11px;
cursor:pointer;
}
.webaudio-slider-body{
display:inline-block;
position:relative;
margin:0;
padding:0;
vertical-align:bottom;
white-space:pre;
}
.webaudio-slider-knob{
display:inline-block;
position:absolute;
margin:0;
padding:0;
}
</style>
<div class='webaudio-slider-body' tabindex='1' touch-action='none'><div class='webaudio-slider-knob' touch-action='none'></div><div class='webaudioctrl-tooltip'></div><div part="label" class="webaudioctrl-label"><slot></slot></div></div>
`;
this.elem=root.childNodes[2];
this.knob=this.elem.firstChild;
this.ttframe=this.knob.nextSibling;
this.label=this.ttframe.nextSibling;
this.enable=this.getAttr("enable",1);
this.tracking=this.getAttr("tracking","rel");
this._src=this.getAttr("src",opt.sliderSrc); if (!this.hasOwnProperty("src")) Object.defineProperty(this,"src",{get:()=>{return this._src},set:(v)=>{this._src=v;this.setupImage()}});
this._knobsrc=this.getAttr("knobsrc",opt.sliderKnobSrc); if (!this.hasOwnProperty("knobsrc")) Object.defineProperty(this,"knobsrc",{get:()=>{return this._knobsrc},set:(v)=>{this._knobsrc=v;this.setupImage()}});
this._value=this.getAttr("value",0); if (!this.hasOwnProperty("value")) Object.defineProperty(this,"value",{get:()=>{return this._value},set:(v)=>{this._value=v;this.redraw()}});
this.defvalue=this.getAttr("defvalue",this._value);
this._min=this.getAttr("min",0); if (!this.hasOwnProperty("min")) Object.defineProperty(this,"min",{get:()=>{return this._min},set:(v)=>{this._min=v;this.redraw()}});
this._max=this.getAttr("max",100); if (!this.hasOwnProperty("max")) Object.defineProperty(this,"max",{get:()=>{return this._max},set:(v)=>{this._max=v;this.redraw()}});
this._step=this.getAttr("step",1); if (!this.hasOwnProperty("step")) Object.defineProperty(this,"step",{get:()=>{return this._step},set:(v)=>{this._step=v;this.redraw()}});
this._sprites=this.getAttr("sprites",0); if (!this.hasOwnProperty("sprites")) Object.defineProperty(this,"sprites",{get:()=>{return this._sprites},set:(v)=>{this._sprites=v;this.setupImage()}});
this._direction=this.getAttr("direction",null); if (!this.hasOwnProperty("direction")) Object.defineProperty(this,"direction",{get:()=>{return this._direction},set:(v)=>{this._direction=v;this.setupImage()}});
this.log=this.getAttr("log",0);
this._width=this.getAttr("width",opt.sliderWidth); if (!this.hasOwnProperty("width")) Object.defineProperty(this,"width",{get:()=>{return this._width},set:(v)=>{this._width=v;this.setupImage()}});
this._height=this.getAttr("height",opt.sliderHeight); if (!this.hasOwnProperty("height")) Object.defineProperty(this,"height",{get:()=>{return this._height},set:(v)=>{this._height=v;this.setupImage()}});
this._knobwidth=this.getAttr("knobwidth",opt.sliderKnobWidth); if (!this.hasOwnProperty("knobwidth")) Object.defineProperty(this,"knobwidth",{get:()=>{return this._knobwidth},set:(v)=>{this._knobwidth=v;this.setupImage()}});
this._knobheight=this.getAttr("knobheight",opt.sliderKnobHeight); if (!this.hasOwnProperty("knobheight")) Object.defineProperty(this,"knobheight",{get:()=>{return this._knobheight},set:(v)=>{this._knobheight=v;this.setupImage()}});
this._ditchlength=this.getAttr("ditchlength",opt.sliderDitchlength); if (!this.hasOwnProperty("ditchlength")) Object.defineProperty(this,"ditchlength",{get:()=>{return this._ditchlength},set:(v)=>{this._ditchlength=v;this.setupImage()}});
this._colors=this.getAttr("colors",opt.sliderColors); if (!this.hasOwnProperty("colors")) Object.defineProperty(this,"colors",{get:()=>{return this._colors},set:(v)=>{this._colors=v;this.setupImage()}});
this.outline=this.getAttr("outline",opt.outline);
this.setupLabel();
this.sensitivity=this.getAttr("sensitivity",1);
this.valuetip=this.getAttr("valuetip",opt.valuetip);
this.tooltip=this.getAttr("tooltip",null);
this.conv=this.getAttr("conv",null);
if(this.conv){
const x=this._value;
this.convValue=eval(this.conv);
if(typeof(this.convValue)=="function")
this.convValue=this.convValue(x);
}
else
this.convValue=this._value;
this.midilearn=this.getAttr("midilearn",opt.midilearn);
this.midicc=this.getAttr("midicc",null);
this.midiController={};
this.midiMode="normal";
if(this.midicc) {
let ch = parseInt(this.midicc.substring(0, this.midicc.lastIndexOf("."))) - 1;
let cc = parseInt(this.midicc.substring(this.midicc.lastIndexOf(".") + 1));
this.setMidiController(ch, cc);
}
if(this.midilearn && this.id){
if(webAudioControlsWidgetManager && webAudioControlsWidgetManager.midiLearnTable){
const ml=webAudioControlsWidgetManager.midiLearnTable;
for(let i=0; i < ml.length; ++i){
if(ml[i].id==this.id){
this.setMidiController(ml[i].cc.channel, ml[i].cc.cc);
break;
}
}
}
}
this.setupImage();
this.digits=0;
if(this.step && this.step < 1) {
for(let n = this.step ; n < 1; n *= 10)
++this.digits;
}
this.fireflag=true;
if(window.webAudioControlsWidgetManager)
// window.webAudioControlsWidgetManager.updateWidgets();
window.webAudioControlsWidgetManager.addWidget(this);
this.elem.onclick=(e)=>{e.stopPropagation()};
}
disconnectedCallback(){}
setupImage(){
this.coltab = this.colors.split(";");
this.bodyimg=new Image();
this.knobimg=new Image();
this.srcurl=null;
if(this.src==null||this.src==""){
this.sw=+this._width;
this.sh=+this.height;
if(this._direction=="horz"){
if(this._width==null) this.sw=128;
if(this._height==null) this.sh=24;
}
else if(this._direction=="vert"){
if(this._width==null) this.sw=24;
if(this._height==null) this.sh=128;
}
else{
if(this._width==null) this.sw=128;
if(this._height==null) this.sh=24;
}
const r=Math.min(this.sw,this.sh)*0.5;
const svgbody=
`<svg xmlns="https://www.w3.org/2000/svg" width="${this.sw}" height="${this.sh}" preserveAspectRatio="none">
<defs>
<filter id="f1">
<feGaussianBlur in="SourceGraphic" stdDeviation="0.8" />
</filter>
<linearGradient id="g1" x1="0%" y1="0%" ${(this.sw>this.sh)?'x2="0%" y2="100%"':'x2="100%" y2="0%"'}>
<stop offset="0%" stop-color="#000" stop-opacity="0"/>
<stop offset="100%" stop-color="#000" stop-opacity="0.3"/>
</linearGradient>
</defs>
<rect x="1" y="1" rx="${r}" ry="${r}" width="${this.sw-2}" height="${this.sh-2}" fill="#000"/>
<rect x="3" y="3" rx="${r}" ry="${r}" width="${this.sw-6}" height="${this.sh-6}" fill="${this.coltab[1]}" filter="url(#f1)"/>
<rect x="1" y="1" rx="${r}" ry="${r}" width="${this.sw-2}" height="${this.sh-2}" fill="url(#g1)"/>
</svg>`;
this.srcurl = "data:image/svg+xml;base64,"+btoa(svgbody);
}
else{
this.srcurl = this.src;
}
this.bodyimg.onload=()=>{
if(this.src!="")
this.elem.style.backgroundImage = "url("+this.srcurl+")";
this.sw=+this._width;
this.sh=+this._height;
if(this._width==null) this.sw=this.bodyimg.width;
if(this._height==null) this.sh=this.bodyimg.height;
if(this.dr==null){
if(this.sw>this.sh)
this.dr="horz";
else
this.dr="vert";
}
this.kw=+this._knobwidth;
this.kh=+this._knobheight;
if(this._knobsrc==null){
if(this._knobwidth==null) this.kw=Math.min(this.sw,this.sh);
if(this._knobheight==null) this.kh=Math.min(this.sw,this.sh);
const mm=Math.min(this.kw,this.kh)*0.5;
const kw2=Math.max(1,this.kw-12);
const kh2=Math.max(1,this.kh-12);
const svgknob=
`<svg xmlns="https://www.w3.org/2000/svg" width="${this.kw}" height="${this.kh}" preserveAspectRatio="none">
<defs>
<filter id="f1">
<feGaussianBlur in="SourceGraphic" stdDeviation="0.8" />
</filter>
<linearGradient id="g1" x1="0%" y1="0%" x2="0%" y2="100%">
<stop offset="0%" stop-color="${this.coltab[2]}"/>
<stop offset="50%" stop-color="${this.coltab[0]}"/>
<stop offset="100%" stop-color="${this.coltab[0]}" stop-opacity="0.5"/>
</linearGradient>
<linearGradient id="g2" x1="0%" y1="0%" x2="0%" y2="100%">
<stop offset="0%" stop-color="${this.coltab[0]}"/>
<stop offset="100%" stop-color="${this.coltab[0]}"/>
</linearGradient>
<linearGradient id="g3" x1="0%" y1="0%" x2="0%" y2="100%">
<stop offset="0%" stop-color="#000" stop-opacity="0"/>
<stop offset="100%" stop-color="#000" stop-opacity="0.3"/>
</linearGradient>
</defs>
<rect x="2" y="2" width="${this.kw-4}" height="${this.kh-4}" rx="${mm}" ry="${mm}" fill="#000"/>
<rect x="3" y="3" width="${this.kw-6}" height="${this.kh-6}" rx="${mm}" ry="${mm}" fill="url(#g1)"/>
<rect x="6" y="6" width="${kw2}" height="${kh2}" rx="${mm}" ry="${mm}" fill="url(#g2)" filter="url(#f1)"/>
<rect x="3" y="3" width="${this.kw-6}" height="${this.kh-6}" rx="${mm}" ry="${mm}" fill="url(#g3)"/>
</svg>`;
this.knobsrcurl = "data:image/svg+xml;base64,"+btoa(svgknob);
}
else{
this.knobsrcurl = this.knobsrc;
}
this.knobimg.onload=()=>{
this.knob.style.backgroundImage = "url("+this.knobsrcurl+")";
if(this._knobwidth==null) this.kw=this.knobimg.width;
if(this._knobheight==null) this.kh=this.knobimg.height;
this.dlen=this.ditchlength;
if(this.dlen==null){
if(this.dr=="horz")
this.dlen=this.sw-this.kw;
else
this.dlen=this.sh-this.kh;
}
this.knob.style.backgroundSize = "100% 100%";
this.knob.style.width = this.kw+"px";
this.knob.style.height = this.kh+"px";
this.elem.style.backgroundSize = "100% 100%";
this.elem.style.width=this.sw+"px";
this.elem.style.height=this.sh+"px";
this.redraw();
};
this.knobimg.src=this.knobsrcurl;
};
this.bodyimg.src=this.srcurl;
}
redraw() {
let ratio;
this.digits=0;
if(this.step && this.step < 1) {
for(let n = this.step ; n < 1; n *= 10)
++this.digits;
}
if(this.value<this.min){
this.value=this.min;
}
if(this.value>this.max){
this.value=this.max;
}
if(this.log)
ratio = Math.log(this.value/this.min) / Math.log(this.max/this.min);
else
ratio = (this.value - this.min) / (this.max - this.min);
let style = this.knob.style;
if(this.dr=="horz"){
style.top=(this.sh-this.kh)*0.5+"px";
style.left=((this.sw-this.kw-this.dlen)*0.5+ratio*this.dlen)+"px";
this.sensex=1; this.sensey=0;
}
else{
style.left=(this.sw-this.kw)*0.5+"px";
style.top=((this.sh-this.kh-this.dlen)*0.5+(1-ratio)*this.dlen)+"px";
this.sensex=0; this.sensey=1;
}
}
_setValue(v){
v=(Math.round((v-this.min)/this.step))*this.step+this.min;
this._value=Math.min(this.max,Math.max(this.min,v));
if(this._value!=this.oldvalue){
this.oldvalue=this._value;
this.fireflag=true;
if(this.conv){
const x=this._value;
this.convValue=eval(this.conv);
if(typeof(this.convValue)=="function")
this.convValue=this.convValue(x);
}
else
this.convValue=this._value;
if(typeof(this.convValue)=="number"){
this.convValue=this.convValue.toFixed(this.digits);
}
this.redraw();
this.showtip(0);
return 1;
}
return 0;
}
setValue(v,f){
if(this._setValue(v)&&f)
this.sendEvent("input"),this.sendEvent("change");
}
// keydown(e){
// const delta = this.step;
// if(delta==0)
// delta=1;
// switch(e.key){
// case "ArrowUp":