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e=document.createEvent("CustomEvent");return e.initCustomEvent(t,n.bubbles,n.cancelable,n.detail),e}t.prototype=window.Event.prototype,window.CustomEvent=t}();var h=function(){function t(n,e){var o=this;i()(this,t);var c=this,s={scratchType:r.LINE,containerWidth:100,containerHeight:100,percentToFinish:50,nPoints:0,pointSize:[0,0],callback:function(){alert("done.")},brushSrc:"",imageForwardSrc:"./images/scratchcard.png",imageBackgroundSrc:"./images/scratchcard-background.svg",htmlBackground:"",clearZoneRadius:0,enabledPercentUpdate:!0};this.config=Object.assign(Object.assign({},s),e),this.scratchType=this.config.scratchType,this.container=this.isString(n)?document.querySelector(String(n)):n,this.position=[0,0],this.readyToClear=!1,this.percent=0,this.callbackDone=!1,this.generateCanvas(),this.ctx=this.canvas.getContext("2d"),this.brush=new a(this.ctx,this.position[0],this.position[1]),this.config.scratchType===r.BRUSH&&u(this.config.brushSrc).then((function(t){o.brushImage=t}));var h=f((function(t){t.preventDefault(),c.dispatchEvent("scratch","move"),c.position=c.mousePosition(t),c.brush.updateMousePosition(c.position[0],c.position[1]),c.scratch(),o.config.enabledPercentUpdate&&(c.percent=c.updatePercent())}),16);this.canvas.addEventListener("mousedown",(function(t){t.preventDefault(),c._setScratchPosition(),c.scratchType===r.LINE&&(c.position=c.mousePosition(t),c.brush.updateMousePosition(c.position[0],c.position[1]),c.brush.startLine(c.config.clearZoneRadius)),c.canvas.addEventListener("mousemove",h),document.body.addEventListener("mouseup",(function t(n){c.canvas.removeEventListener("mousemove",h),c.finish(),this.removeEventListener("mouseup",t)}))})),this.canvas.addEventListener("touchstart",(function(t){t.preventDefault(),c._setScratchPosition(),c.scratchType===r.LINE&&(c.position=c.mousePosition(t),c.brush.updateMousePosition(c.position[0],c.position[1]),c.brush.startLine(c.config.clearZoneRadius)),c.canvas.addEventListener("touchmove",h),document.body.addEventListener("touchend",(function t(){c.canvas.removeEventListener("touchmove",h),c.finish(),this.removeEventListener("touchend",t)}))})),window.addEventListener("resize",f((function(){o._setScratchPosition()}),100)),window.addEventListener("scroll",f((function(){o._setScratchPosition()}),16))}return s()(t,[{key:"isString",value:function(t){return"string"==typeof t||t instanceof String}},{key:"getPercent",value:function(){return this.percent}},{key:"_setScratchPosition",value:function(){this.zone=function(t){for(var n={left:0,top:0},e=t.getBoundingClientRect();t;)n.top+=t.offsetTop,n.left+=t.offsetLeft,t=t.offsetParent;var r=n.left-e.left,o=n.top-e.top;return{left:r<0?n.left+Math.abs(r):n.left-Math.abs(r),top:o<0?n.top+Math.abs(o):n.top-Math.abs(o)}}(this.canvas)}},{key:"finish",value:function(){!this.callbackDone&&this.percent>this.config.percentToFinish&&(this.clear(),this.canvas.style.pointerEvents="none",void 0!==this.config.callback&&(this.callbackDone=!0,this.config.callback()))}},{key:"dispatchEvent",value:function(t,n){!function(t,n,e){var r=new CustomEvent(n,{bubbles:!0,cancelable:!0,detail:e});t.dispatchEvent(r)}(this.canvas,"".concat(t,".").concat(n),{})}},{key:"init",value:function(){var t=this;return new Promise((function(n,e){u(t.config.imageForwardSrc).then((function(e){t.scratchImage=e,t.ctx.drawImage(t.scratchImage,0,0,t.canvas.width,t.canvas.height),t.setBackground(),n()}),(function(n){return e(n),new TypeError("".concat(t.config.imageForwardSrc," is not loaded."))}))}))}},{key:"generateCanvas",value:function(){this.canvas=document.createElement("canvas"),this.canvas.classList.add("sc__canvas"),this.canvas.width=this.config.containerWidth,this.canvas.height=this.config.containerHeight,this.container.appendChild(this.canvas)}},{key:"setBackground",value:function(){var t=this;if(0!==this.config.htmlBackground.length)!function(t,n){var e=new DOMParser,r=document.createElement("div");r.classList.add("sc__inner");var o=e.parseFromString(t,"text/html");r.innerHTML=o.body.innerHTML,n.insertBefore(r,n.firstElementChild)}(this.config.htmlBackground,this.container);else{var n=document.createElement("img");u(this.config.imageBackgroundSrc).then((function(e){n.src=e.src,t.container.insertBefore(n,t.canvas)}),(function(t){console.log(t.message)}))}}},{key:"mousePosition",value:function(t){var n,e;switch(t.type){case"touchmove":n=t.touches[0].clientX-this.config.clearZoneRadius-this.zone.left,e=t.touches[0].clientY-this.config.clearZoneRadius-this.zone.top;break;case"mousemove":n=t.clientX-this.config.clearZoneRadius-this.zone.left,e=t.clientY-this.config.clearZoneRadius-this.zone.top}return[n,e]}},{key:"scratch",value:function(){this.position[0],this.position[1];switch(this.ctx.globalCompositeOperation="destination-out",this.ctx.save(),this.config.scratchType){case r.BRUSH:this.brush.brush(this.brushImage);break;case r.CIRCLE:this.brush.circle(this.config.clearZoneRadius);break;case r.SPRAY:this.brush.spray(this.config.clearZoneRadius,this.config.pointSize,this.config.nPoints);break;case r.LINE:this.brush.drawLine(this.config.clearZoneRadius)}this.ctx.restore()}},{key:"updatePercent",value:function(){for(var t=0,n=this.ctx.getImageData(0,0,this.canvas.width,this.canvas.height),e=n.data.length,r=0;r<e;r+=4)0===n.data[r]&&0===n.data[r+1]&&0===n.data[r+2]&&0===n.data[r+3]&&t++;return t>=1?t/(this.canvas.width*this.canvas.height)*100:0}},{key:"clear",value:function(){this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height)}}]),t}();window.ScratchCard=h,window.SCRATCH_TYPE=r}])}));