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this.processEvent[t]}},{key:"emitStart",value:function(t,e){this.isProcess(t)||(this.enable(t),this.emitEvent("".concat(t,"start"),e))}},{key:"emitEnd",value:function(t){}},{key:"clearPressTimeout",value:function(){this.pressTimeout&&(clearTimeout(this.pressTimeout),this.pressTimeout=null)}},{key:"reset",value:function(){this.clearPressTimeout(),this.startTime=0,this.startPoints=null,this.startDistance=0,this.direction=null,this.eventType=null,this.pinch=!1,this.prevMoveTime=0,this.prevMovePoints=null,this.lastMoveTime=0,this.lastMovePoints=null}}]),t}(),R=function(t){f(n,S);var e=g(n);function n(t){var r;return u(this,n),(r=e.call(this))._attrs={},r._isWindow=void 0,r._attrs=Object.assign({},t),r._isWindow="undefined"!=typeof window,r._initPixelRatio(),r._initCanvas(),["createImage","toDataURL","requestAnimationFrame"].forEach((function(e){r._initAttrs(e,t.canvas||r.get("el"))})),r}return l(n,[{key:"get",value:function(t){return 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e=k(t,"height");return"auto"===e&&(e=t.offsetHeight),parseFloat(e)}(t)||t.height;this.set("canvas",this),this.set("el",t),this.set("context",r||t.getContext("2d")),this.changeSize(i,o);var a=new P({canvas:this,el:t,parent:this.get("parent")});this.set("eventController",a)}},{key:"_initPixelRatio",value:function(){this.get("pixelRatio")||this.set("pixelRatio",window&&window.devicePixelRatio||1)}},{key:"changeSize",value:function(t,e){var n,r=this.get("pixelRatio"),i=this.get("el");i.style&&(i.style.width=t+"px",i.style.height=e+"px"),(n=i)&&"object"===s(n)&&(1===n.nodeType&&n.nodeName||n.isCanvasElement)&&(i.width=t*r,i.height=e*r,1!==r&&this.get("context").scale(r,r)),this.set("width",t),this.set("height",e)}},{key:"destroy",value:function(){if(!this.get("destroyed")){var t=this.get("el");t.width=0,t.height=0,this.clear(),this._attrs={},this.set("destroyed",!0)}}},{key:"clear",value:function(){}},{key:"isDestroyed",value:function(){return 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r=e.x-t.x,i=e.y-t.y;if(Math.abs(r)+Math.abs(i)>2?(e.lastX1=t.x+.3*r,e.lastY1=t.y+.3*i,e.lastX2=t.x+.7*r,e.lastY2=t.y+.7*i):(e.lastX1=e.lastX2=t.x+.5*r,e.lastY1=e.lastY2=t.y+.5*i),e.perLineWidth=(t.lineWidth+e.lineWidth)/2,"number"==typeof t.lastX1){if(n.drawCurveLine(t.lastX2,t.lastY2,t.x,t.y,e.lastX1,e.lastY1,e.perLineWidth),t.isFirstPoint)return;if(t.lastX1===t.lastX2&&t.lastY1===t.lastY2)return;var o=n.getRadianData(t.lastX1,t.lastY1,t.lastX2,t.lastY2),a=n.getRadianPoints(o,t.lastX1,t.lastY1,t.perLineWidth/2),s=n.getRadianPoints(o,t.lastX2,t.lastY2,e.perLineWidth/2);n.drawTrapezoid(a[0],s[0],s[1],a[1])}else e.isFirstPoint=!0},this.addHistory=function(){var t=n.get("options").maxHistoryLength;if(t&&n.canAddHistory)if(n.canAddHistory=!1,n.get("createImage")){var e=null;e=n.get("createImage")();var r=n.get("toDataURL")&&n.get("toDataURL")();w(r)?e.src=r:r.then((function(t){e.src=t})),e.onload=function(){var r=M;M=e,n.historyList.push(r),n.historyList=n.historyList.slice(-t)}}else n.historyList.length++},this.drawByImage=function(t){var e=n.get("context"),r=n.get("width"),i=n.get("height");e.clearRect(0,0,r,i);try{t&&e.drawImage(t,0,0,r,i),e.draw&&e.draw(!0)}catch(t){n.historyList.length=0}},this.isEmpty=function(){return n.get("options").maxHistoryLength>0?0===n.historyList.length:n._isEmpty},this.clear=function(){var t=n.get("context");t.clearRect(0,0,n.get("width"),n.get("height")),t.draw&&t.draw(),n._isEmpty=!0,M=null,n.historyList.length=0},this.undo=function(){if(0===n.get("options").maxHistoryLength&&n.clear(),n.get("createImage")&&n.historyList.length){var t=n.historyList.splice(-1)[0];n.drawByImage(t),0===n.historyList.length&&n.clear()}},this.canvas=e,this.canvas.set("pen",A),this.init()}return l(t,[{key:"getOption",value:function(){}},{key:"setOption",value:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},e=a({},t),n=e.maxLineWidth;if(n&&t.penSize&&n==A.maxLineWidth){var 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e=t.points;if(this.active){this.canAddHistory=!0,this.get("context").strokeStyle=this.get("options").penColor;var n=e[0];this.initPoint(n.x,n.y)}}},{key:"onDrawMove",value:function(t){if(this.disableScroll(t),this.active){var e=t.points[0];this.initPoint(e.x,e.y),this.onDraw()}}},{key:"onDrawEnd",value:function(t){this.active&&(this.addHistory(),this.canAddHistory=!0,this.points=[])}},{key:"onDraw",value:function(){var t=this,e=this.get("context");if(this.points.length>=2){e.lineWidth=this.get("options").penSize||2;var n=this.points.slice(-1)[0],r=this.points.slice(-2,-1)[0],i=function(){t._isEmpty=!1,t.get("options").openSmooth?t.drawSmoothLine(r,n):t.drawNoSmoothLine(r,n)},o=this.get("el").canvas;o&&o.requestAnimationFrame?o.requestAnimationFrame((function(){return i()})):"function"==typeof requestAnimationFrame?requestAnimationFrame((function(){return i()})):i()}}},{key:"getMaxLineWidth",value:function(){var t=this.get("options");return 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