https://www.bremer-weinkolleg.de/theme/8189cdf9dc222c59b37f4eba64e…rl-foundation.fb-signature.plugin.405689.js

1"use strict";(self.webpackChunk=self.webpackChunk||[]).push([[46454],{454:(t,e,i)=>{i.r(e),i.d(e,{default:()=>r});/*!
2 * Signature Pad v4.2.0 | https://github.com/szimek/signature_pad
3 * (c) 2024 Szymon Nowak | Released under the MIT license
4 */class s{constructor(t,e,i,s){if(isNaN(t)||isNaN(e))throw 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 n{static fromPoints(t,e){let i=this.calculateControlPoints(t[0],t[1],t[2]).c2,s=this.calculateControlPoints(t[1],t[2],t[3]).c1;return new n(t[1],i,s,t[2],e.start,e.end)}static calculateControlPoints(t,e,i){let n=t.x-e.x,o=t.y-e.y,h=e.x-i.x,a=e.y-i.y,r={x:(t.x+e.x)/2,y:(t.y+e.y)/2},l={x:(e.x+i.x)/2,y:(e.y+i.y)/2},d=Math.sqrt(n*n+o*o),c=Math.sqrt(h*h+a*a),u=r.x-l.x,v=r.y-l.y,_=c/(d+c),p={x:l.x+u*_,y:l.y+v*_},m=e.x-p.x,g=e.y-p.y;return{c1:new s(r.x+m,r.y+g),c2:new s(l.x+m,l.y+g)}}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}length(){let t,e;let i=0;for(let s=0;s<=10;s+=1){let 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){let 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 o{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 h extends o{constructor(t,e={}){super(),this.canvas=t,this._drawingStroke=!1,this._isEmpty=!0,this._lastPoints=[],this._data=[],this._lastVelocity=0,this._lastWidth=0,this._handleMouseDown=t=>{1===t.buttons&&this._strokeBegin(t)},this._handleMouseMove=t=>{this._strokeMoveUpdate(t)},this._handleMouseUp=t=>{1===t.buttons&&this._strokeEnd(t)},this._handleTouchStart=t=>{if(t.cancelable&&t.preventDefault(),1===t.targetTouches.length){let e=t.changedTouches[0];this._strokeBegin(e)}},this._handleTouchMove=t=>{t.cancelable&&t.preventDefault();let e=t.targetTouches[0];this._strokeMoveUpdate(e)},this._handleTouchEnd=t=>{if(t.target===this.canvas){t.cancelable&&t.preventDefault();let e=t.changedTouches[0];this._strokeEnd(e)}},this._handlePointerStart=t=>{t.preventDefault(),this._strokeBegin(t)},this._handlePointerMove=t=>{this._strokeMoveUpdate(t)},this._handlePointerEnd=t=>{this._drawingStroke&&(t.preventDefault(),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.compositeOperation=e.compositeOperation||"source-over",this.canvasContextOptions="canvasContextOptions"in e?e.canvasContextOptions:{},this._strokeMoveUpdate=this.throttle?function(t,e=250){let i,s,n,o=0,h=null,a=()=>{o=Date.now(),h=null,i=t.apply(s,n),h||(s=null,n=[])};return function(...r){let l=Date.now(),d=e-(l-o);return s=this,n=r,d<=0||d>e?(h&&(clearTimeout(h),h=null),o=l,i=t.apply(s,n),h||(s=null,n=[])):h||(h=window.setTimeout(a,d)),i}}(h.prototype._strokeUpdate,this.throttle):h.prototype._strokeUpdate,this._ctx=t.getContext("2d",this.canvasContextOptions),this.clear(),this.on()}clear(){let{_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)=>{let n=new Image,o=e.ratio||window.devicePixelRatio||1,h=e.width||this.canvas.width/o,a=e.height||this.canvas.height/o,r=e.xOffset||0,l=e.yOffset||0;this._reset(this._getPointGroupOptions()),n.onload=()=>{this._ctx.drawImage(n,r,l,h,a),i()},n.onerror=t=>{s(t)},n.crossOrigin="anonymous",n.src=t,this._isEmpty=!1})}toDataURL(t="image/png",e){return"image/svg+xml"===t?("object"!=typeof e&&(e=void 0),`data:image/svg+xml;base64,${btoa(this.toSVG(e))}`):("number"!=typeof e&&(e=void 0),this.canvas.toDataURL(t,e))}on(){this.canvas.style.touchAction="none",this.canvas.style.msTouchAction="none",this.canvas.style.userSelect="none";let t=/Macintosh/.test(navigator.userAgent)&&"ontouchstart"in document;window.PointerEvent&&!t?this._handlePointerEvents():(this._handleMouseEvents(),"ontouchstart"in window&&this._handleTouchEvents())}off(){this.canvas.style.touchAction="auto",this.canvas.style.msTouchAction="auto",this.canvas.style.userSelect="auto",this.canvas.removeEventListener("pointerdown",this._handlePointerStart),this.canvas.removeEventListener("pointermove",this._handlePointerMove),this.canvas.ownerDocument.removeEventListener("pointerup",this._handlePointerEnd),this.canvas.removeEventListener("mousedown",this._handleMouseDown),this.canvas.removeEventListener("mousemove",this._handleMouseMove),this.canvas.ownerDocument.removeEventListener("mouseup",this._handleMouseUp),this.canvas.removeEventListener("touchstart",this._handleTouchStart),this.canvas.removeEventListener("touchmove",this._handleTouchMove),this.canvas.removeEventListener("touchend",this._handleTouchEnd)}isEmpty(){return this._isEmpty}fromData(t,{clear:e=!0}={}){e&&this.clear(),this._fromData(t,this._drawCurve.bind(this),this._drawDot.bind(this)),this._data=this._data.concat(t)}toData(){return this._data}_getPointGroupOptions(t){return{penColor:t&&"penColor"in t?t.penColor:this.penColor,dotSize:t&&"dotSize"in t?t.dotSize:this.dotSize,minWidth:t&&"minWidth"in t?t.minWidth:this.minWidth,maxWidth:t&&"maxWidth"in t?t.maxWidth:this.maxWidth,velocityFilterWeight:t&&"velocityFilterWeight"in t?t.velocityFilterWeight:this.velocityFilterWeight,compositeOperation:t&&"compositeOperation"in t?t.compositeOperation:this.compositeOperation}}_strokeBegin(t){if(!this.dispatchEvent(new CustomEvent("beginStroke",{detail:t,cancelable:!0})))return;this._drawingStroke=!0;let e=this._getPointGroupOptions(),i=Object.assign(Object.assign({},e),{points:[]});this._data.push(i),this._reset(e),this._strokeUpdate(t)}_strokeUpdate(t){if(!this._drawingStroke)return;if(0===this._data.length){this._strokeBegin(t);return}this.dispatchEvent(new CustomEvent("beforeUpdateStroke",{detail:t}));let e=t.clientX,i=t.clientY,s=void 0!==t.pressure?t.pressure:void 0!==t.force?t.force:0,n=this._createPoint(e,i,s),o=this._data[this._data.length-1],h=o.points,a=h.length>0&&h[h.length-1],r=!!a&&n.distanceTo(a)<=this.minDistance,l=this._getPointGroupOptions(o);if(!a||!(a&&r)){let t=this._addPoint(n,l);a?t&&this._drawCurve(t,l):this._drawDot(n,l),h.push({time:n.time,x:n.x,y:n.y,pressure:n.pressure})}this.dispatchEvent(new CustomEvent("afterUpdateStroke",{detail:t}))}_strokeEnd(t){this._drawingStroke&&(this._strokeUpdate(t),this._drawingStroke=!1,this.dispatchEvent(new CustomEvent("endStroke",{detail:t})))}_handlePointerEvents(){this._drawingStroke=!1,this.canvas.addEventListener("pointerdown",this._handlePointerStart),this.canvas.addEventListener("pointermove",this._handlePointerMove),this.canvas.ownerDocument.addEventListener("pointerup",this._handlePointerEnd)}_handleMouseEvents(){this._drawingStroke=!1,this.canvas.addEventListener("mousedown",this._handleMouseDown),this.canvas.addEventListener("mousemove",this._handleMouseMove),this.canvas.ownerDocument.addEventListener("mouseup",this._handleMouseUp)}_handleTouchEvents(){this.canvas.addEventListener("touchstart",this._handleTouchStart),this.canvas.addEventListener("touchmove",this._handleTouchMove),this.canvas.addEventListener("touchend",this._handleTouchEnd)}_reset(t){this._lastPoints=[],this._lastVelocity=0,this._lastWidth=(t.minWidth+t.maxWidth)/2,this._ctx.fillStyle=t.penColor,this._ctx.globalCompositeOperation=t.compositeOperation}_createPoint(t,e,i){let n=this.canvas.getBoundingClientRect();return new s(t-n.left,e-n.top,i,new Date().getTime())}_addPoint(t,e){let{_lastPoints:i}=this;if(i.push(t),i.length>2){3===i.length&&i.unshift(i[0]);let t=this._calculateCurveWidths(i[1],i[2],e),s=n.fromPoints(i,t);return i.shift(),s}return null}_calculateCurveWidths(t,e,i){let s=i.velocityFilterWeight*e.velocityFrom(t)+(1-i.velocityFilterWeight)*this._lastVelocity,n=this._strokeWidth(s,i),o={end:n,start:this._lastWidth};return this._lastVelocity=s,this._lastWidth=n,o}_strokeWidth(t,e){return Math.max(e.maxWidth/(t+1),e.minWidth)}_drawCurveSegment(t,e,i){let s=this._ctx;s.moveTo(t,e),s.arc(t,e,i,0,2*Math.PI,!1),this._isEmpty=!1}_drawCurve(t,e){let i=this._ctx,s=t.endWidth-t.startWidth,n=2*Math.ceil(t.length());i.beginPath(),i.fillStyle=e.penColor;for(let i=0;i<n;i+=1){let o=i/n,h=o*o,a=h*o,r=1-o,l=r*r,d=l*r,c=d*t.startPoint.x;c+=3*l*o*t.control1.x+3*r*h*t.control2.x+a*t.endPoint.x;let u=d*t.startPoint.y;u+=3*l*o*t.control1.y+3*r*h*t.control2.y+a*t.endPoint.y;let v=Math.min(t.startWidth+a*s,e.maxWidth);this._drawCurveSegment(c,u,v)}i.closePath(),i.fill()}_drawDot(t,e){let i=this._ctx,s=e.dotSize>0?e.dotSize:(e.minWidth+e.maxWidth)/2;i.beginPath(),this._drawCurveSegment(t.x,t.y,s),i.closePath(),i.fillStyle=e.penColor,i.fill()}