wavesurfer.js/dist/plugins/hover.cjs

Audio waveform player

"use strict";class t{constructor(){this.listeners={}}on(t,e,s){if(this.listeners[t]||(this.listeners[t]=new Set),null==s?void 0:s.once){const s=(...i)=>{this.un(t,s),e(...i)};return this.listeners[t].add(s),()=>this.un(t,s)}return this.listeners[t].add(e),()=>this.un(t,e)}un(t,e){var s;null===(s=this.listeners[t])||void 0===s||s.delete(e)}once(t,e){return this.on(t,e,{once:!0})}unAll(){this.listeners={}}emit(t,...e){this.listeners[t]&&this.listeners[t].forEach((t=>t(...e)))}}class e extends t{constructor(t){super(),this.subscriptions=[],this.isDestroyed=!1,this.options=t}onInit(){}_init(t){this.isDestroyed&&(this.subscriptions=[],this.isDestroyed=!1),this.wavesurfer=t,this.onInit()}destroy(){this.emit("destroy"),this.subscriptions.forEach((t=>t())),this.subscriptions=[],this.isDestroyed=!0,this.wavesurfer=void 0}}function s(t,e){const i=e.xmlns?document.createElementNS(e.xmlns,t):document.createElement(t);for(const[t,n]of Object.entries(e))if("children"===t&&n)for(const[t,e]of Object.entries(n))e instanceof Node?i.appendChild(e):"string"==typeof e?i.appendChild(document.createTextNode(e)):i.appendChild(s(t,e));else"style"===t?Object.assign(i.style,n):"textContent"===t?i.textContent=n:i.setAttribute(t,n.toString());return i}function i(t,e,i){const n=s(t,e||{});return null==i||i.appendChild(n),n}function n(t,e){let s;const i=()=>{s&&(s(),s=void 0),s=t()},n=e.map((t=>t.subscribe(i)));return i(),()=>{s&&(s(),s=void 0),n.forEach((t=>t()))}}function o(t,e){const s=function(t){let e=t;const s=new Set;return{get value(){return e},set(t){Object.is(e,t)||(e=t,s.forEach((t=>t(e))))},update(t){this.set(t(e))},subscribe:t=>(s.add(t),()=>s.delete(t))}}(null),i=t=>{s.set(t)};return t.addEventListener(e,i),s._cleanup=()=>{t.removeEventListener(e,i)},s}const r={lineWidth:1,labelSize:11,labelPreferLeft:!1,formatTimeCallback:t=>`${Math.floor(t/60)}:${`0${Math.floor(t)%60}`.slice(-2)}`};class l extends e{constructor(t){super(t||{}),this.lastPointerPosition=null,this.options=Object.assign({},r,t),this.wrapper=i("div",{part:"hover"}),this.label=i("span",{part:"hover-label"},this.wrapper)}static create(t){return new l(t)}addUnits(t){return`${t}${"number"==typeof t?"px":""}`}onInit(){if(!this.wavesurfer)throw Error("WaveSurfer is not initialized");const t=this.wavesurfer.options,e=this.options.lineColor||t.cursorColor||t.progressColor;Object.assign(this.wrapper.style,{position:"absolute",zIndex:10,left:0,top:0,height:"100%",pointerEvents:"none",borderLeft:`${this.addUnits(this.options.lineWidth)} solid ${e}`,opacity:"0",transition:"opacity .1s ease-in"}),Object.assign(this.label.style,{display:"block",backgroundColor:this.options.labelBackground,color:this.options.labelColor,fontSize:`${this.addUnits(this.options.labelSize)}`,transition:"transform .1s ease-in",padding:"2px 3px"});const s=this.wavesurfer.getWrapper();s.appendChild(this.wrapper);const i=this.wavesurfer.getState(),r=o(s,"pointermove"),l=o(s,"pointerleave");this.subscriptions.push(n((()=>{const t=r.value;if(!t||!this.wavesurfer)return;this.lastPointerPosition={clientX:t.clientX,clientY:t.clientY};const e=this.wavesurfer.getWrapper().getBoundingClientRect(),{width:s}=e,n=t.clientX-e.left,o=Math.min(1,Math.max(0,n/s)),l=Math.min(s-this.options.lineWidth-1,n);this.wrapper.style.transform=`translateX(${l}px)`,this.wrapper.style.opacity="1";const a=i.duration.value;this.label.textContent=this.options.formatTimeCallback(a*o);const h=this.label.offsetWidth,p=this.options.labelPreferLeft?l-h>0:l+h>s;this.label.style.transform=p?`translateX(-${h+this.options.lineWidth}px)`:"",this.emit("hover",o)}),[r,i.duration])),this.subscriptions.push(n((()=>{l.value&&(this.wrapper.style.opacity="0",this.lastPointerPosition=null)}),[l]));const a=()=>{if(this.lastPointerPosition&&this.wavesurfer){const t=this.wavesurfer.getWrapper().getBoundingClientRect(),{width:e}=t,s=this.lastPointerPosition.clientX-t.left,n=Math.min(1,Math.max(0,s/e)),o=Math.min(e-this.options.lineWidth-1,s);this.wrapper.style.transform=`translateX(${o}px)`;const r=i.duration.value;this.label.textContent=this.options.formatTimeCallback(r*n);const l=this.label.offsetWidth,a=this.options.labelPreferLeft?o-l>0:o+l>e;this.label.style.transform=a?`translateX(-${l+this.options.lineWidth}px)`:""}};this.subscriptions.push(this.wavesurfer.on("zoom",a)),this.subscriptions.push(this.wavesurfer.on("scroll",a))}destroy(){super.destroy(),this.wrapper.remove()}}module.exports=l;