wavesurfer.js/dist/plugin/wavesurfer.playhead.min.js

Interactive navigable audio visualization using Web Audio and Canvas

/*!
 * wavesurfer.js playhead plugin 6.6.3 (2023-04-04)
 * https://wavesurfer-js.org
 * @license BSD-3-Clause
 */
!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define("WaveSurfer",[],t):"object"==typeof exports?exports.WaveSurfer=t():(e.WaveSurfer=e.WaveSurfer||{},e.WaveSurfer.playhead=t())}(self,(()=>(()=>{"use strict";var e={374:(e,t)=>{function r(e){return r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},r(e)}function i(e,t){for(var i=0;i<t.length;i++){var n=t[i];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,(a=n.key,s=void 0,s=function(e,t){if("object"!==r(e)||null===e)return e;var i=e[Symbol.toPrimitive];if(void 0!==i){var n=i.call(e,t||"default");if("object"!==r(n))return n;throw new TypeError("@@toPrimitive must return a primitive value.")}return("string"===t?String:Number)(e)}(a,"string"),"symbol"===r(s)?s:String(s)),n)}var a,s}Object.defineProperty(t,"__esModule",{value:!0}),t.default=void 0;var n=function(){function e(t,r){var i=this;!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.params=t,this.options={},["draw","moveOnSeek","returnOnPause"].forEach((function(e){i.options[e]=!(e in t)||t[e]})),this.wavesurfer=r,this.util=r.util,this.style=this.util.style,this.markerWidth=21,this.markerHeight=16,this.playheadTime=0,this.unFuns=[],this._onResize=function(){i._updatePlayheadPosition()},this._onReady=function(){i.wrapper=i.wavesurfer.drawer.wrapper,i._updatePlayheadPosition()}}var t,r,n;return t=e,n=[{key:"create",value:function(t){return{name:"playhead",deferInit:!(!t||!t.deferInit)&&t.deferInit,params:t,instance:e}}}],(r=[{key:"_onBackendCreated",value:function(){var e=this;this.wrapper=this.wavesurfer.drawer.wrapper,this.options.draw&&(this._createPlayheadElement(),window.addEventListener("resize",this._onResize,!0),window.addEventListener("orientationchange",this._onResize,!0),this.wavesurferOn("zoom",this._onResize)),this.wavesurferOn("pause",(function(){e.options.returnOnPause&&e.wavesurfer.setCurrentTime(e.playheadTime)})),this.wavesurferOn("seek",(function(){e.options.moveOnSeek&&(e.playheadTime=e.wavesurfer.getCurrentTime(),e._updatePlayheadPosition())})),this.playheadTime=this.wavesurfer.getCurrentTime()}},{key:"wavesurferOn",value:function(e,t){var r=this,i=this.wavesurfer.on(e,t);return this.unFuns.push((function(){r.wavesurfer.un(e,t)})),i}},{key:"init",value:function(){var e=this;this.wavesurfer.isReady?(this._onBackendCreated(),this._onReady()):(this.wavesurfer.once("ready",(function(){return e._onReady()})),this.wavesurfer.once("backend-created",(function(){return e._onBackendCreated()})))}},{key:"destroy",value:function(){this.unFuns.forEach((function(e){return e()})),this.unFuns=[],this.wrapper.removeChild(this.element),window.removeEventListener("resize",this._onResize,!0),window.removeEventListener("orientationchange",this._onResize,!0)}},{key:"setPlayheadTime",value:function(e){this.playheadTime=e,this.wavesurfer.isPlaying()||this.wavesurfer.setCurrentTime(e),this._updatePlayheadPosition()}},{key:"_createPointerSVG",value:function(){var e="http://www.w3.org/2000/svg",t=document.createElementNS(e,"svg"),r=document.createElementNS(e,"path");return t.setAttribute("viewBox","0 0 33 30"),r.setAttribute("d","M16.75 31 31.705 5.566A3 3 0 0 0 29.146 1H4.354a3 3 0 0 0-2.56 4.566L16.75 31z"),r.setAttribute("stroke","#979797"),r.setAttribute("fill","#CF2F00"),t.appendChild(r),this.style(t,{width:this.markerWidth+"px",height:this.markerHeight+"px",cursor:"pointer","z-index":5}),t}},{key:"_createPlayheadElement",value:function(){var e=this,t=document.createElement("playhead");t.className="wavesurfer-playhead",this.style(t,{position:"absolute",height:"100%",display:"flex","flex-direction":"column"});var r=this._createPointerSVG();t.appendChild(r),r.addEventListener("click",(function(t){t.stopPropagation(),e.wavesurfer.setCurrentTime(e.playheadTime)}));var i=document.createElement("div");this.style(i,{"flex-grow":1,"margin-left":this.markerWidth/2-.5+"px",background:"black",width:"1px",opacity:.1}),t.appendChild(i),this.element=t,this.wrapper.appendChild(t)}},{key:"_updatePlayheadPosition",value:function(){if(this.element){var e=this.wavesurfer.getDuration(),t=this.wavesurfer.drawer.width/this.wavesurfer.params.pixelRatio,r=this.playheadTime/e;this.style(this.element,{left:t*r-this.markerWidth/2+"px"})}}}])&&i(t.prototype,r),n&&i(t,n),Object.defineProperty(t,"prototype",{writable:!1}),e}();t.default=n,e.exports=t.default}},t={};var r=function r(i){var n=t[i];if(void 0!==n)return n.exports;var a=t[i]={exports:{}};return e[i](a,a.exports,r),a.exports}(374);return r})()));
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