Stirling-PDF/src/main/resources/static/js/thirdParty/signature_pad.umd.min.js

/*!
 * Signature Pad v4.1.5 | https://github.com/szimek/signature_pad
 * (c) 2023 Szymon Nowak | Released under the MIT license
 */
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).SignaturePad=e()}(this,(function(){"use strict";class t{constructor(t,e,i,s){if(isNaN(t)||isNaN(e))throw new Error(`Point is invalid: (${t}, ${e})`);this.x=+t,this.y=+e,this.pressure=i||0,this.time=s||Date.now()}distanceTo(t){return Math.sqrt(Math.pow(this.x-t.x,2)+Math.pow(this.y-t.y,2))}equals(t){return this.x===t.x&&this.y===t.y&&this.pressure===t.pressure&&this.time===t.time}velocityFrom(t){return this.time!==t.time?this.distanceTo(t)/(this.time-t.time):0}}class e{constructor(t,e,i,s,n,o){this.startPoint=t,this.control2=e,this.control1=i,this.endPoint=s,this.startWidth=n,this.endWidth=o}static fromPoints(t,i){const s=this.calculateControlPoints(t[0],t[1],t[2]).c2,n=this.calculateControlPoints(t[1],t[2],t[3]).c1;return new e(t[1],s,n,t[2],i.start,i.end)}static calculateControlPoints(e,i,s){const n=e.x-i.x,o=e.y-i.y,h=i.x-s.x,r=i.y-s.y,a=(e.x+i.x)/2,d=(e.y+i.y)/2,c=(i.x+s.x)/2,l=(i.y+s.y)/2,u=Math.sqrt(n*n+o*o),v=Math.sqrt(h*h+r*r),_=v/(u+v),m=c+(a-c)*_,p=l+(d-l)*_,g=i.x-m,w=i.y-p;return{c1:new t(a+g,d+w),c2:new t(c+g,l+w)}}length(){let t,e,i=0;for(let s=0;s<=10;s+=1){const n=s/10,o=this.point(n,this.startPoint.x,this.control1.x,this.control2.x,this.endPoint.x),h=this.point(n,this.startPoint.y,this.control1.y,this.control2.y,this.endPoint.y);if(s>0){const s=o-t,n=h-e;i+=Math.sqrt(s*s+n*n)}t=o,e=h}return i}point(t,e,i,s,n){return e*(1-t)*(1-t)*(1-t)+3*i*(1-t)*(1-t)*t+3*s*(1-t)*t*t+n*t*t*t}}class i{constructor(){try{this._et=new EventTarget}catch(t){this._et=document}}addEventListener(t,e,i){this._et.addEventListener(t,e,i)}dispatchEvent(t){return this._et.dispatchEvent(t)}removeEventListener(t,e,i){this._et.removeEventListener(t,e,i)}}class s extends i{constructor(t,e={}){super(),this.canvas=t,this._drawningStroke=!1,this._isEmpty=!0,this._lastPoints=[],this._data=[],this._lastVelocity=0,this._lastWidth=0,this._handleMouseDown=t=>{1===t.buttons&&(this._drawningStroke=!0,this._strokeBegin(t))},this._handleMouseMove=t=>{this._drawningStroke&&this._strokeMoveUpdate(t)},this._handleMouseUp=t=>{1===t.buttons&&this._drawningStroke&&(this._drawningStroke=!1,this._strokeEnd(t))},this._handleTouchStart=t=>{if(t.cancelable&&t.preventDefault(),1===t.targetTouches.length){const e=t.changedTouches[0];this._strokeBegin(e)}},this._handleTouchMove=t=>{t.cancelable&&t.preventDefault();const e=t.targetTouches[0];this._strokeMoveUpdate(e)},this._handleTouchEnd=t=>{if(t.target===this.canvas){t.cancelable&&t.preventDefault();const e=t.changedTouches[0];this._strokeEnd(e)}},this._handlePointerStart=t=>{this._drawningStroke=!0,t.preventDefault(),this._strokeBegin(t)},this._handlePointerMove=t=>{this._drawningStroke&&(t.preventDefault(),this._strokeMoveUpdate(t))},this._handlePointerEnd=t=>{this._drawningStroke&&(t.preventDefault(),this._drawningStroke=!1,this._strokeEnd(t))},this.velocityFilterWeight=e.velocityFilterWeight||.7,this.minWidth=e.minWidth||.5,this.maxWidth=e.maxWidth||2.5,this.throttle="throttle"in e?e.throttle:16,this.minDistance="minDistance"in e?e.minDistance:5,this.dotSize=e.dotSize||0,this.penColor=e.penColor||"black",this.backgroundColor=e.backgroundColor||"rgba(0,0,0,0)",this._strokeMoveUpdate=this.throttle?function(t,e=250){let i,s,n,o=0,h=null;const r=()=>{o=Date.now(),h=null,i=t.apply(s,n),h||(s=null,n=[])};return function(...a){const d=Date.now(),c=e-(d-o);return s=this,n=a,c<=0||c>e?(h&&(clearTimeout(h),h=null),o=d,i=t.apply(s,n),h||(s=null,n=[])):h||(h=window.setTimeout(r,c)),i}}(s.prototype._strokeUpdate,this.throttle):s.prototype._strokeUpdate,this._ctx=t.getContext("2d"),this.clear(),this.on()}clear(){const{_ctx:t,canvas:e}=this;t.fillStyle=this.backgroundColor,t.clearRect(0,0,e.width,e.height),t.fillRect(0,0,e.width,e.height),this._data=[],this._reset(this._getPointGroupOptions()),this._isEmpty=!0}fromDataURL(t,e={}){return new Promise(((i,s)=>{const n=new Image,o=e.ratio||window.devicePixelRatio||1,h=e.width||this.canvas.widt
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