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r={x:e.x+i/2,y:e.y+n/2};t.beginPath(),t.lineWidth=10,t.arc(r.x,r.y,20,this.loadingAngle,3*Math.PI/2+this.loadingAngle),t.stroke(),t.closePath(),this.loadingAngle+=.07,this.loadingAngle>=2*Math.PI&&(this.loadingAngle=0)}load(){this.isLoad||(this.image.onload=()=>{this.isLoad=!0})}newTemporaryCopy(){return this}getTemporaryCopy(){return this}hideTemporaryCopy(){}}class n{constructor(t,e){this.pages=[],this.currentPageIndex=0,this.currentSpreadIndex=0,this.landscapeSpread=[],this.portraitSpread=[],this.render=e,this.app=t,this.currentPageIndex=0,this.isShowCover=this.app.getSettings().showCover}destroy(){this.pages=[]}createSpread(){this.landscapeSpread=[],this.portraitSpread=[];for(let e=0;e=0&&t0?this.pages[e-1]:null}getFlippingPage(t){const e=this.currentSpreadIndex;if("portrait"===this.render.getOrientation())return 0===t?this.pages[e].newTemporaryCopy():this.pages[e-1];{const i=0===t?this.getSpread()[e+1]:this.getSpread()[e-1];return 1===i.length||0===t?this.pages[i[0]]:this.pages[i[1]]}}getBottomPage(t){const e=this.currentSpreadIndex;if("portrait"===this.render.getOrientation())return 0===t?this.pages[e+1]:this.pages[e-1];{const i=0===t?this.getSpread()[e+1]:this.getSpread()[e-1];return 1===i.length?this.pages[i[0]]:0===t?this.pages[i[1]]:this.pages[i[0]]}}showNext(){this.currentSpreadIndex0&&(this.currentSpreadIndex--,this.showSpread())}getCurrentPageIndex(){return this.currentPageIndex}show(t=null){if(null===t&&(t=this.currentPageIndex),t<0||t>=this.pages.length)return;const e=this.getSpreadIndexByPage(t);null!==e&&(this.currentSpreadIndex=e,this.showSpread())}getCurrentSpreadIndex(){return this.currentSpreadIndex}setCurrentSpreadIndex(t){if(!(t>=0&&t=t.left&&e.x<=t.width+t.left&&e.y>=t.top&&e.y<=t.top+t.height?e:null}static GetRotatedPoint(t,e,i){return{x:t.x*Math.cos(i)+t.y*Math.sin(i)+e.x,y:t.y*Math.cos(i)-t.x*Math.sin(i)+e.y}}static LimitPointToCircle(t,e,i){if(a.GetDistanceBetweenTwoPoint(t,i)<=e)return 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0===this.direction?-this.angle:this.angle}getRect(){return this.rect}getPosition(){return this.position}getActiveCorner(){return 0===this.direction?this.rect.topLeft:this.rect.topRight}getDirection(){return this.direction}getFlippingProgress(){return Math.abs((this.position.x-this.pageWidth)/(2*this.pageWidth)*100)}getCorner(){return this.corner}getBottomPagePosition(){return 1===this.direction?{x:this.pageWidth,y:0}:{x:0,y:0}}getShadowStartPoint(){return"top"===this.corner?this.topIntersectPoint:null!==this.sideIntersectPoint?this.sideIntersectPoint:this.topIntersectPoint}getShadowAngle(){const t=a.GetAngleBetweenTwoLine(this.getSegmentToShadowLine(),[{x:0,y:0},{x:this.pageWidth,y:0}]);return 0===this.direction?t:Math.PI-t}calcAngleAndPosition(t){let e=t;if(this.updateAngleAndGeometry(e),e="top"===this.corner?this.checkPositionAtCenterLine(e,{x:0,y:0},{x:0,y:this.pageHeight}):this.checkPositionAtCenterLine(e,{x:0,y:this.pageHeight},{x:0,y:0}),Math.abs(e.x-this.pageWidth)<1&&Math.abs(e.y)<1)throw new Error("Point is too small");return e}updateAngleAndGeometry(t){this.angle=this.calculateAngle(t),this.rect=this.getPageRect(t)}calculateAngle(t){const e=this.pageWidth-t.x+1,i="bottom"===this.corner?this.pageHeight-t.y:t.y;let n=2*Math.acos(e/Math.sqrt(i*i+e*e));i<0&&(n=-n);const r=Math.PI-n;if(!isFinite(n)||r>=0&&r<.003)throw new Error("The G point is too small");return"bottom"===this.corner&&(n=-n),n}getPageRect(t){return"top"===this.corner?this.getRectFromBasePoint([{x:0,y:0},{x:this.pageWidth,y:0},{x:0,y:this.pageHeight},{x:this.pageWidth,y:this.pageHeight}],t):this.getRectFromBasePoint([{x:0,y:-this.pageHeight},{x:this.pageWidth,y:-this.pageHeight},{x:0,y:0},{x:this.pageWidth,y:0}],t)}getRectFromBasePoint(t,e){return{topLeft:this.getRotatedPoint(t[0],e),topRight:this.getRotatedPoint(t[1],e),bottomLeft:this.getRotatedPoint(t[2],e),bottomRight:this.getRotatedPoint(t[3],e)}}getRotatedPoint(t,e){return{x:t.x*Math.cos(this.angle)+t.y*Math.sin(this.angle)+e.x,y:t.y*Math.cos(this.angle)-t.x*Math.sin(this.angle)+e.y}}calculateIntersectPoint(t){const e={left:-1,top:-1,width:this.pageWidth+2,height:this.pageHeight+2};"top"===this.corner?(this.topIntersectPoint=a.GetIntersectBetweenTwoSegment(e,[t,this.rect.topRight],[{x:0,y:0},{x:this.pageWidth,y:0}]),this.sideIntersectPoint=a.GetIntersectBetweenTwoSegment(e,[t,this.rect.bottomLeft],[{x:this.pageWidth,y:0},{x:this.pageWidth,y:this.pageHeight}]),this.bottomIntersectPoint=a.GetIntersectBetweenTwoSegment(e,[this.rect.bottomLeft,this.rect.bottomRight],[{x:0,y:this.pageHeight},{x:this.pageWidth,y:this.pageHeight}])):(this.topIntersectPoint=a.GetIntersectBetweenTwoSegment(e,[this.rect.topLeft,this.rect.topRight],[{x:0,y:0},{x:this.pageWidth,y:0}]),this.sideIntersectPoint=a.GetIntersectBetweenTwoSegment(e,[t,this.rect.topLeft],[{x:this.pageWidth,y:0},{x:this.pageWidth,y:this.pageHeight}]),this.bottomIntersectPoint=a.GetIntersectBetweenTwoSegment(e,[this.rect.bottomLeft,this.rect.bottomRight],[{x:0,y:this.pageHeight},{x:this.pageWidth,y:this.pageHeight}]))}checkPositionAtCenterLine(t,e,i){let n=t;const r=a.LimitPointToCircle(e,this.pageWidth,n);n!==r&&(n=r,this.updateAngleAndGeometry(n));const s=Math.sqrt(Math.pow(this.pageWidth,2)+Math.pow(this.pageHeight,2));let o=this.rect.bottomRight,l=this.rect.topLeft;if("bottom"===this.corner&&(o=this.rect.topRight,l=this.rect.bottomLeft),o.x<=0){const t=a.LimitPointToCircle(i,s,l);t!==n&&(n=t,this.updateAngleAndGeometry(n))}return n}getSegmentToShadowLine(){const t=this.getShadowStartPoint();return[t,t!==this.sideIntersectPoint&&null!==this.sideIntersectPoint?this.sideIntersectPoint:this.bottomIntersectPoint]}}class h{constructor(t,e){this.flippingPage=null,this.bottomPage=null,this.calc=null,this.state="read",this.render=t,this.app=e}fold(t){this.setState("user_fold"),null===this.calc&&this.start(t),this.do(this.render.convertToPage(t))}flip(t){if(this.app.getSettings().disableFlipByClick&&!this.isPointOnCorners(t))return;if(null!==this.calc&&this.render.finishAnimation(),!this.start(t))return;const e=this.getBoundsRect();this.setState("flipping");const i=e.height/10,n="bottom"===this.calc.getCorner()?e.height-i:i,r="bottom"===this.calc.getCorner()?e.height:0;this.calc.calc({x:e.pageWidth-i,y:n}),this.animateFlippingTo({x:e.pageWidth-i,y:n},{x:-e.pageWidth,y:r},!0)}start(t){this.reset();const e=this.render.convertToBook(t),i=this.getBoundsRect(),n=this.getDirectionByPoint(e),r=e.y>=i.height/2?"bottom":"top";if(!this.checkDirection(n))return!1;try{if(this.flippingPage=this.app.getPageCollection().getFlippingPage(n),this.bottomPage=this.app.getPageCollection().getBottomPage(n),"landscape"===this.render.getOrientation())if(1===n){const t=this.app.getPageCollection().nextBy(this.flippingPage);null!==t&&this.flippingPage.getDensity()!==t.getDensity()&&(this.flippingPage.setDrawingDensity("hard"),t.setDrawingDensity("hard"))}else{const t=this.app.getPageCollection().prevBy(this.flippingPage);null!==t&&this.flippingPage.getDensity()!==t.getDensity()&&(this.flippingPage.setDrawingDensity("hard"),t.setDrawingDensity("hard"))}return this.render.setDirection(n),this.calc=new l(n,r,i.pageWidth.toString(10),i.height.toString(10)),!0}catch(t){return!1}}do(t){if(null!==this.calc&&this.calc.calc(t)){const t=this.calc.getFlippingProgress();this.bottomPage.setArea(this.calc.getBottomClipArea()),this.bottomPage.setPosition(this.calc.getBottomPagePosition()),this.bottomPage.setAngle(0),this.bottomPage.setHardAngle(0),this.flippingPage.setArea(this.calc.getFlippingClipArea()),this.flippingPage.setPosition(this.calc.getActiveCorner()),this.flippingPage.setAngle(this.calc.getAngle()),0===this.calc.getDirection()?this.flippingPage.setHardAngle(90*(200-2*t)/100):this.flippingPage.setHardAngle(-90*(200-2*t)/100),this.render.setPageRect(this.calc.getRect()),this.render.setBottomPage(this.bottomPage),this.render.setFlippingPage(this.flippingPage),this.render.setShadowData(this.calc.getShadowStartPoint(),this.calc.getShadowAngle(),t,this.calc.getDirection())}}flipToPage(t,e){const i=this.app.getPageCollection().getCurrentSpreadIndex(),n=this.app.getPageCollection().getSpreadIndexByPage(t);try{n>i&&(this.app.getPageCollection().setCurrentSpreadIndex(n-1),this.flipNext(e)),nthis.do(a)));const o=this.getAnimationDuration(r.length);this.render.startAnimation(s,o,(()=>{this.calc&&(i&&(1===this.calc.getDirection()?this.app.turnToPrevPage():this.app.turnToNextPage()),n&&(this.render.setBottomPage(null),this.render.setFlippingPage(null),this.render.clearShadow(),this.setState("read"),this.reset()))}))}getCalculation(){return this.calc}getState(){return this.state}setState(t){this.state!==t&&(this.app.updateState(t),this.state=t)}getDirectionByPoint(t){const e=this.getBoundsRect();if("portrait"===this.render.getOrientation()){if(t.x-e.pageWidth<=e.width/5)return 1}else if(t.x=1e3?e:t/1e3*e}checkDirection(t){return 0===t?this.app.getCurrentPageIndex()=1}reset(){this.calc=null,this.flippingPage=null,this.bottomPage=null}getBoundsRect(){return this.render.getRect()}checkState(...t){for(const e of t)if(this.state===e)return!0;return!1}isPointOnCorners(t){const e=this.getBoundsRect(),i=e.pageWidth,n=Math.sqrt(Math.pow(i,2)+Math.pow(e.height,2))/5,r=this.render.convertToBook(t);return r.x>0&&r.y>0&&r.xe.width-n)&&(r.ye.height-n)}}class c{constructor(t,e){this.leftPage=null,this.rightPage=null,this.flippingPage=null,this.bottomPage=null,this.direction=null,this.orientation=null,this.shadow=null,this.animation=null,this.pageRect=null,this.boundsRect=null,this.timer=0,this.safari=!1,this.setting=e,this.app=t;const i=new RegExp("Version\\/[\\d\\.]+.*Safari/");this.safari=null!==i.exec(window.navigator.userAgent)}render(t){if(null!==this.animation){const e=Math.round((t-this.animation.startedAt)/this.animation.durationFrame);e{this.render(e),requestAnimationFrame(t)};requestAnimationFrame(t)}startAnimation(t,e,i){this.finishAnimation(),this.animation={frames:t,duration:e,durationFrame:e/t.length,onAnimateEnd:i,startedAt:this.timer}}finishAnimation(){null!==this.animation&&(this.animation.frames[this.animation.frames.length-1](),null!==this.animation.onAnimateEnd&&this.animation.onAnimateEnd()),this.animation=null}update(){this.boundsRect=null;const t=this.calculateBoundsRect();this.orientation!==t&&(this.orientation=t,this.app.updateOrientation(t))}calculateBoundsRect(){let t="landscape";const e=this.getBlockWidth(),i=e/2,n=this.getBlockHeight()/2,r=this.setting.width/this.setting.height;let a=this.setting.width,s=this.setting.height,o=i-a;return"stretch"===this.setting.size?(e<2*this.setting.minWidth&&this.app.getSettings().usePortrait&&(t="portrait"),a="portrait"===t?this.getBlockWidth():this.getBlockWidth()/2,a>this.setting.maxWidth&&(a=this.setting.maxWidth),s=a/r,s>this.getBlockHeight()&&(s=this.getBlockHeight(),a=s*r),o="portrait"===t?i-a/2-a:i-a):e<2*a&&this.app.getSettings().usePortrait&&(t="portrait",o=i-a/2-a),this.boundsRect={left:o,top:n-s/2,width:2*a,height:s,pageWidth:a},t}setShadowData(t,e,i,n){if(!this.app.getSettings().drawShadow)return;const r=100*this.getSettings().maxShadowOpacity;this.shadow={pos:t,angle:e,width:3*this.getRect().pageWidth/4*i/100,opacity:(100-i)*r/100/100,direction:n,progress:2*i}}clearShadow(){this.shadow=null}getBlockWidth(){return this.app.getUI().getDistElement().offsetWidth}getBlockHeight(){return this.app.getUI().getDistElement().offsetHeight}getDirection(){return this.direction}getRect(){return null===this.boundsRect&&this.calculateBoundsRect(),this.boundsRect}getSettings(){return this.app.getSettings()}getOrientation(){return this.orientation}setPageRect(t){this.pageRect=t}setDirection(t){this.direction=t}setRightPage(t){null!==t&&t.setOrientation(1),this.rightPage=t}setLeftPage(t){null!==t&&t.setOrientation(0),this.leftPage=t}setBottomPage(t){null!==t&&t.setOrientation(1===this.direction?0:1),this.bottomPage=t}setFlippingPage(t){null!==t&&t.setOrientation(0===this.direction&&"portrait"!==this.orientation?0:1),this.flippingPage=t}convertToBook(t){const e=this.getRect();return{x:t.x-e.left,y:t.y-e.top}}isSafari(){return this.safari}convertToPage(t,e){e||(e=this.direction);const i=this.getRect();return{x:0===e?t.x-i.left-i.width/2:i.width/2-t.x+i.left,y:t.y-i.top}}convertToGlobal(t,e){if(e||(e=this.direction),null==t)return null;const i=this.getRect();return{x:0===e?t.x+i.left+i.width/2:i.width/2-t.x+i.left,y:t.y+i.top}}convertRectToGlobal(t,e){return e||(e=this.direction),{topLeft:this.convertToGlobal(t.topLeft,e),topRight:this.convertToGlobal(t.topRight,e),bottomLeft:this.convertToGlobal(t.bottomLeft,e),bottomRight:this.convertToGlobal(t.bottomRight,e)}}}class d extends c{constructor(t,e,i){super(t,e),this.canvas=i,this.ctx=i.getContext("2d")}getContext(){return this.ctx}reload(){}drawFrame(){this.clear(),"portrait"!==this.orientation&&null!=this.leftPage&&this.leftPage.simpleDraw(0),null!=this.rightPage&&this.rightPage.simpleDraw(1),null!=this.bottomPage&&this.bottomPage.draw(),this.drawBookShadow(),null!=this.flippingPage&&this.flippingPage.draw(),null!=this.shadow&&(this.drawOuterShadow(),this.drawInnerShadow());const t=this.getRect();"portrait"===this.orientation&&(this.ctx.beginPath(),this.ctx.rect(t.left+t.pageWidth,t.top,t.width,t.height),this.ctx.clip())}drawBookShadow(){const t=this.getRect();this.ctx.save(),this.ctx.beginPath();const e=t.width/20;this.ctx.rect(t.left,t.top,t.width,t.height);const i={x:t.left+t.width/2-e/2,y:0};this.ctx.translate(i.x,i.y);const n=this.ctx.createLinearGradient(0,0,e,0);n.addColorStop(0,"rgba(0, 0, 0, 0)"),n.addColorStop(.4,"rgba(0, 0, 0, 0.2)"),n.addColorStop(.49,"rgba(0, 0, 0, 0.1)"),n.addColorStop(.5,"rgba(0, 0, 0, 0.5)"),n.addColorStop(.51,"rgba(0, 0, 0, 0.4)"),n.addColorStop(1,"rgba(0, 0, 0, 0)"),this.ctx.clip(),this.ctx.fillStyle=n,this.ctx.fillRect(0,0,e,2*t.height),this.ctx.restore()}drawOuterShadow(){const t=this.getRect();this.ctx.save(),this.ctx.beginPath(),this.ctx.rect(t.left,t.top,t.width,t.height);const e=this.convertToGlobal({x:this.shadow.pos.x,y:this.shadow.pos.y});this.ctx.translate(e.x,e.y),this.ctx.rotate(Math.PI+this.shadow.angle+Math.PI/2);const i=this.ctx.createLinearGradient(0,0,this.shadow.width,0);0===this.shadow.direction?(this.ctx.translate(0,-100),i.addColorStop(0,"rgba(0, 0, 0, "+this.shadow.opacity+")"),i.addColorStop(1,"rgba(0, 0, 0, 0)")):(this.ctx.translate(-this.shadow.width,-100),i.addColorStop(0,"rgba(0, 0, 0, 0)"),i.addColorStop(1,"rgba(0, 0, 0, "+this.shadow.opacity+")")),this.ctx.clip(),this.ctx.fillStyle=i,this.ctx.fillRect(0,0,this.shadow.width,2*t.height),this.ctx.restore()}drawInnerShadow(){const t=this.getRect();this.ctx.save(),this.ctx.beginPath();const e=this.convertToGlobal({x:this.shadow.pos.x,y:this.shadow.pos.y}),i=this.convertRectToGlobal(this.pageRect);this.ctx.moveTo(i.topLeft.x,i.topLeft.y),this.ctx.lineTo(i.topRight.x,i.topRight.y),this.ctx.lineTo(i.bottomRight.x,i.bottomRight.y),this.ctx.lineTo(i.bottomLeft.x,i.bottomLeft.y),this.ctx.translate(e.x,e.y),this.ctx.rotate(Math.PI+this.shadow.angle+Math.PI/2);const n=3*this.shadow.width/4,r=this.ctx.createLinearGradient(0,0,n,0);0===this.shadow.direction?(this.ctx.translate(-n,-100),r.addColorStop(1,"rgba(0, 0, 0, "+this.shadow.opacity+")"),r.addColorStop(.9,"rgba(0, 0, 0, 0.05)"),r.addColorStop(.7,"rgba(0, 0, 0, "+this.shadow.opacity+")"),r.addColorStop(0,"rgba(0, 0, 0, 0)")):(this.ctx.translate(0,-100),r.addColorStop(0,"rgba(0, 0, 0, "+this.shadow.opacity+")"),r.addColorStop(.1,"rgba(0, 0, 0, 0.05)"),r.addColorStop(.3,"rgba(0, 0, 0, "+this.shadow.opacity+")"),r.addColorStop(1,"rgba(0, 0, 0, 0)")),this.ctx.clip(),this.ctx.fillStyle=r,this.ctx.fillRect(0,0,n,2*t.height),this.ctx.restore()}clear(){this.ctx.fillStyle="white",this.ctx.fillRect(0,0,this.canvas.width,this.canvas.height)}}class p{constructor(t,e,i){this.touchPoint=null,this.swipeTimeout=250,this.onResize=()=>{this.update()},this.onMouseDown=t=>{if(this.checkTarget(t.target)){const e=this.getMousePos(t.clientX,t.clientY);this.app.startUserTouch(e),t.preventDefault()}},this.onTouchStart=t=>{if(this.checkTarget(t.target)&&t.changedTouches.length>0){const e=t.changedTouches[0],i=this.getMousePos(e.clientX,e.clientY);this.touchPoint={point:i,time:Date.now()},setTimeout((()=>{null!==this.touchPoint&&this.app.startUserTouch(i)}),this.swipeTimeout),this.app.getSettings().mobileScrollSupport||t.preventDefault()}},this.onMouseUp=t=>{const e=this.getMousePos(t.clientX,t.clientY);this.app.userStop(e)},this.onMouseMove=t=>{const e=this.getMousePos(t.clientX,t.clientY);this.app.userMove(e,!1)},this.onTouchMove=t=>{if(t.changedTouches.length>0){const e=t.changedTouches[0],i=this.getMousePos(e.clientX,e.clientY);this.app.getSettings().mobileScrollSupport?(null!==this.touchPoint&&(Math.abs(this.touchPoint.point.x-i.x)>10||"read"!==this.app.getState())&&t.cancelable&&this.app.userMove(i,!0),"read"!==this.app.getState()&&t.preventDefault()):this.app.userMove(i,!0)}},this.onTouchEnd=t=>{if(t.changedTouches.length>0){const e=t.changedTouches[0],i=this.getMousePos(e.clientX,e.clientY);let n=!1;if(null!==this.touchPoint){const t=i.x-this.touchPoint.point.x,e=Math.abs(i.y-this.touchPoint.point.y);Math.abs(t)>this.swipeDistance&&e<2*this.swipeDistance&&Date.now()-this.touchPoint.time0?this.app.flipPrev(this.touchPoint.point.y'),this.wrapper=t.querySelector(".stf__wrapper"),this.app=e;const n=this.app.getSettings().usePortrait?1:2;t.style.minWidth=i.minWidth*n+"px",t.style.minHeight=i.minHeight+"px","fixed"===i.size&&(t.style.minWidth=i.width*n+"px",t.style.minHeight=i.height+"px"),i.autoSize&&(t.style.width="100%",t.style.maxWidth=2*i.maxWidth+"px"),t.style.display="block",window.addEventListener("resize",this.onResize,!1),this.swipeDistance=i.swipeDistance}destroy(){this.app.getSettings().useMouseEvents&&this.removeHandlers(),this.distElement.remove(),this.wrapper.remove()}getDistElement(){return this.distElement}getWrapper(){return this.wrapper}setOrientationStyle(t){this.wrapper.classList.remove("--portrait","--landscape"),"portrait"===t?(this.app.getSettings().autoSize&&(this.wrapper.style.paddingBottom=this.app.getSettings().height/this.app.getSettings().width*100+"%"),this.wrapper.classList.add("--portrait")):(this.app.getSettings().autoSize&&(this.wrapper.style.paddingBottom=this.app.getSettings().height/(2*this.app.getSettings().width)*100+"%"),this.wrapper.classList.add("--landscape")),this.update()}removeHandlers(){window.removeEventListener("resize",this.onResize),this.distElement.removeEventListener("mousedown",this.onMouseDown),this.distElement.removeEventListener("touchstart",this.onTouchStart),window.removeEventListener("mousemove",this.onMouseMove),window.removeEventListener("touchmove",this.onTouchMove),window.removeEventListener("mouseup",this.onMouseUp),window.removeEventListener("touchend",this.onTouchEnd)}setHandlers(){window.addEventListener("resize",this.onResize,!1),this.app.getSettings().useMouseEvents&&(this.distElement.addEventListener("mousedown",this.onMouseDown),this.distElement.addEventListener("touchstart",this.onTouchStart),window.addEventListener("mousemove",this.onMouseMove),window.addEventListener("touchmove",this.onTouchMove,{passive:!this.app.getSettings().mobileScrollSupport}),window.addEventListener("mouseup",this.onMouseUp),window.addEventListener("touchend",this.onTouchEnd))}getMousePos(t,e){const i=this.distElement.getBoundingClientRect();return{x:t-i.left,y:e-i.top}}checkTarget(t){return!this.app.getSettings().clickEventForward||!["a","button"].includes(t.tagName.toLowerCase())}}class u extends p{constructor(t,e,i,n){super(t,e,i),this.wrapper.insertAdjacentHTML("afterbegin",'
'),this.distElement=t.querySelector(".stf__block"),this.items=n;for(const r of n)this.distElement.appendChild(r);this.setHandlers()}clear(){for(const t of this.items)this.parentElement.appendChild(t)}updateItems(t){this.removeHandlers(),this.distElement.innerHTML="";for(const e of t)this.distElement.appendChild(e);this.items=t,this.setHandlers()}update(){this.app.getRender().update()}}class g extends p{constructor(t,e,i){super(t,e,i),this.wrapper.innerHTML='',this.canvas=t.querySelectorAll("canvas")[0],this.distElement=this.canvas,this.resizeCanvas(),this.setHandlers()}resizeCanvas(){const t=getComputedStyle(this.canvas),e=parseInt(t.getPropertyValue("width"),10),i=parseInt(t.getPropertyValue("height"),10);this.canvas.width=e,this.canvas.height=i}getCanvas(){return this.canvas}update(){this.resizeCanvas(),this.app.getRender().update()}}class f extends c{constructor(t,e,i){super(t,e),this.outerShadow=null,this.innerShadow=null,this.hardShadow=null,this.hardInnerShadow=null,this.element=i,this.createShadows()}createShadows(){this.element.insertAdjacentHTML("beforeend",'
\n
\n
\n
'),this.outerShadow=this.element.querySelector(".stf__outerShadow"),this.innerShadow=this.element.querySelector(".stf__innerShadow"),this.hardShadow=this.element.querySelector(".stf__hardShadow"),this.hardInnerShadow=this.element.querySelector(".stf__hardInnerShadow")}clearShadow(){super.clearShadow(),this.outerShadow.style.cssText="display: none",this.innerShadow.style.cssText="display: none",this.hardShadow.style.cssText="display: none",this.hardInnerShadow.style.cssText="display: none"}reload(){this.element.querySelector(".stf__outerShadow")||this.createShadows()}drawHardInnerShadow(){const t=this.getRect(),e=this.shadow.progress>100?200-this.shadow.progress:this.shadow.progress;let i=(100-e)*(2.5*t.pageWidth)/100+20;i>t.pageWidth&&(i=t.pageWidth);let n=`\n display: block;\n z-index: ${(this.getSettings().startZIndex+5).toString(10)};\n width: ${i}px;\n height: ${t.height}px;\n background: linear-gradient(to right,\n rgba(0, 0, 0, ${this.shadow.opacity*e/100}) 5%,\n rgba(0, 0, 0, 0) 100%);\n left: ${t.left+t.width/2}px;\n transform-origin: 0 0;\n `;n+=0===this.getDirection()&&this.shadow.progress>100||1===this.getDirection()&&this.shadow.progress<=100?"transform: translate3d(0, 0, 0);":"transform: translate3d(0, 0, 0) rotateY(180deg);",this.hardInnerShadow.style.cssText=n}drawHardOuterShadow(){const t=this.getRect();let e=(100-(this.shadow.progress>100?200-this.shadow.progress:this.shadow.progress))*(2.5*t.pageWidth)/100+20;e>t.pageWidth&&(e=t.pageWidth);let i=`\n display: block;\n z-index: ${(this.getSettings().startZIndex+4).toString(10)};\n width: ${e}px;\n height: ${t.height}px;\n background: linear-gradient(to left, rgba(0, 0, 0, ${this.shadow.opacity}) 5%, rgba(0, 0, 0, 0) 100%);\n left: ${t.left+t.width/2}px;\n transform-origin: 0 0;\n `;i+=0===this.getDirection()&&this.shadow.progress>100||1===this.getDirection()&&this.shadow.progress<=100?"transform: translate3d(0, 0, 0) rotateY(180deg);":"transform: translate3d(0, 0, 0);",this.hardShadow.style.cssText=i}drawInnerShadow(){const t=this.getRect(),e=3*this.shadow.width/4,i=0===this.getDirection()?e:0,n=0===this.getDirection()?"to left":"to right",r=this.convertToGlobal(this.shadow.pos),s=this.shadow.angle+3*Math.PI/2,o=[this.pageRect.topLeft,this.pageRect.topRight,this.pageRect.bottomRight,this.pageRect.bottomLeft];let l="polygon( ";for(const c of o){let t=1===this.getDirection()?{x:-c.x+this.shadow.pos.x,y:c.y-this.shadow.pos.y}:{x:c.x-this.shadow.pos.x,y:c.y-this.shadow.pos.y};t=a.GetRotatedPoint(t,{x:i,y:100},s),l+=t.x+"px "+t.y+"px, "}l=l.slice(0,-2),l+=")";const h=`\n display: block;\n z-index: ${(this.getSettings().startZIndex+10).toString(10)};\n width: ${e}px;\n height: ${2*t.height}px;\n background: linear-gradient(${n},\n rgba(0, 0, 0, ${this.shadow.opacity}) 5%,\n rgba(0, 0, 0, 0.05) 15%,\n rgba(0, 0, 0, ${this.shadow.opacity}) 35%,\n rgba(0, 0, 0, 0) 100%);\n transform-origin: ${i}px 100px;\n transform: translate3d(${r.x-i}px, ${r.y-100}px, 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",{class:"page-wrapper",page:e,css:{position:"absolute",overflow:"hidden"}}),this.append(i.pageWrap[e]),i.pagePlace[e]||(i.pagePlace[e]=e,i.pageObjs[e].appendTo(i.pageWrap[e]));var r=u._pageSize.call(this,e,!0);n.css({width:r.width,height:r.height}),i.pageWrap[e].css(r)}i.pagePlace[e]==e&&u._makeFlip.call(this,e)}else i.pagePlace[e]=0,i.pageObjs[e]&&i.pageObjs[e].remove()},hasPage:function(t){return b(t,this.data().pageObjs)},center:function(e){var i=this.data(),n=t(this).turn("size"),r=0;if(!i.noCenter){if("double"==i.display){var a=this.turn("view",e||i.tpage||i.page);"ltr"==i.direction?a[0]?a[1]||(r+=n.width/4):r-=n.width/4:a[0]?a[1]||(r-=n.width/4):r+=n.width/4}t(this).css({marginLeft:r})}return this},destroy:function(){var e=this,i=this.data();if("prevented"!=P("destroying",this)){for(i.destroying=!0,t.each(["end","first","flip","last","pressed","released","start","turning","turned","zooming","missing"],(function(t,i){e.unbind(i)})),this.parent().unbind("start",i.eventHandlers.start),t(document).unbind(o.move,i.eventHandlers.touchMove).unbind(o.up,i.eventHandlers.touchEnd);0!==i.totalPages;)this.turn("removePage",i.totalPages);return i.fparent&&i.fparent.remove(),i.shadow&&i.shadow.remove(),this.removeData(),i=null,this}},is:function(){return"object"==typeof this.data().pages},zoom:function(e){var i=this.data();if("number"==typeof e){if(e<.001||e>100)throw S(e+" is not a value for zoom");if("prevented"==P("zooming",this,[e,i.zoom]))return this;var n=this.turn("size"),r=this.turn("view"),a=1/i.zoom,s=Math.round(n.width*a*e),o=Math.round(n.height*a*e);i.zoom=e,t(this).turn("stop").turn("size",s,o),i.opts.autoCenter&&this.turn("center"),u._updateShadow.call(this);for(var l=0;la.totalPages)throw S('"'+t+'" is not a valid page');return r[1]=r[1]||r[0],r[0]>=1&&r[1]<=a.totalPages?(e=Math.floor(2),a.totalPages-r[1]>r[0]?n=2*e-(i=Math.min(r[0]-1,e)):i=2*e-(n=Math.min(a.totalPages-r[1],e))):(i=5,n=5),[Math.max(1,r[0]-i),Math.min(a.totalPages,r[1]+n)]},_necessPage:function(t){if(0===t)return!0;var e=this.turn("range");return this.data().pageObjs[t].hasClass("fixed")||t>=e[0]&&t<=e[1]},_removeFromDOM:function(){var t,e=this.data();for(t in e.pageWrap)b(t,e.pageWrap)&&!u._necessPage.call(this,t)&&u._removePageFromDOM.call(this,t)},_removePageFromDOM:function(t){var e=this.data();if(e.pages[t]){var i=e.pages[t].data();g._moveFoldingPage.call(e.pages[t],!1),i.f&&i.f.fwrapper&&i.f.fwrapper.remove(),e.pages[t].removeData(),e.pages[t].remove(),delete e.pages[t]}e.pageObjs[t]&&e.pageObjs[t].remove(),e.pageWrap[t]&&(e.pageWrap[t].remove(),delete e.pageWrap[t]),u._removeMv.call(this,t),delete e.pagePlace[t],delete e.pageZoom[t]},removePage:function(t){var e=this.data();if("*"==t)for(;0!==e.totalPages;)this.turn("removePage",e.totalPages);else{if(t<1||t>e.totalPages)throw S("The page "+t+" doesn't exist");e.pageObjs[t]&&(this.turn("stop"),u._removePageFromDOM.call(this,t),delete e.pageObjs[t]),u._movePages.call(this,t,-1),e.totalPages=e.totalPages-1,e.page>e.totalPages?(e.page=null,u._fitPage.call(this,e.totalPages)):(u._makeRange.call(this),this.turn("update"))}return this},_movePages:function(t,e){var i,n=this,r=this.data(),a="single"==r.display,s=function(t){var i=t+e,s=i%2,o=s?" odd ":" even ";r.pageObjs[t]&&(r.pageObjs[i]=r.pageObjs[t].removeClass("p"+t+" odd even").addClass("p"+i+o)),r.pagePlace[t]&&r.pageWrap[t]&&(r.pagePlace[i]=i,r.pageObjs[i].hasClass("fixed")?r.pageWrap[i]=r.pageWrap[t].attr("page",i):r.pageWrap[i]=r.pageWrap[t].css(u._pageSize.call(n,i,!0)).attr("page",i),r.pages[t]&&(r.pages[i]=r.pages[t].flip("options",{page:i,next:a||s?i+1:i-1})),e&&(delete r.pages[t],delete r.pagePlace[t],delete r.pageZoom[t],delete r.pageObjs[t],delete r.pageWrap[t]))};if(e>0)for(i=r.totalPages;i>=t;i--)s(i);else for(i=t;i<=r.totalPages;i++)s(i)},display:function(e){var i=this.data(),n=i.display;if(void 0===e)return n;if(-1==t.inArray(e,h))throw S('"'+e+'" is not a value for display');switch(e){case"single":i.pageObjs[0]||(this.turn("stop").css({overflow:"hidden"}),i.pageObjs[0]=t("
",{class:"page p-temporal"}).css({width:this.width(),height:this.height()}).appendTo(this)),this.addClass("shadow");break;case"double":i.pageObjs[0]&&(this.turn("stop").css({overflow:""}),i.pageObjs[0].remove(),delete i.pageObjs[0]),this.removeClass("shadow")}if(i.display=e,n){var r=this.turn("size");u._movePages.call(this,1,0),this.turn("size",r.width,r.height).turn("update")}return this},direction:function(e){var i=this.data();if(void 0===e)return i.direction;if(e=e.toLowerCase(),-1==t.inArray(e,c))throw S('"'+e+'" is not a value for direction');return"rtl"==e&&t(this).attr("dir","ltr").css({direction:"ltr"}),i.direction=e,i.done&&this.turn("size",t(this).width(),t(this).height()),this},animating:function(){return this.data().pageMv.length>0},corner:function(){var t,e,i=this.data();for(e in i.pages)if(b(e,i.pages)&&(t=i.pages[e].flip("corner")))return t;return!1},data:function(){return this.data()},disable:function(e){var i,n=this.data(),r=this.turn("view");for(i in n.disabled=void 0===e||!0===e,n.pages)b(i,n.pages)&&n.pages[i].flip("disable",!!n.disabled||-1==t.inArray(parseInt(i,10),r));return this},disabled:function(t){return void 0===t?!0===this.data().disabled:this.turn("disable",t)},size:function(t,e){if(void 0===t||void 0===e)return{width:this.width(),height:this.height()};this.turn("stop");var i,n,r=this.data(),a="double"==r.display?t/2:t;for(i in this.css({width:t,height:e}),r.pageObjs[0]&&r.pageObjs[0].css({width:a,height:e}),r.pageWrap)b(i,r.pageWrap)&&(n=u._pageSize.call(this,i,!0),r.pageObjs[i].css({width:n.width,height:n.height}),r.pageWrap[i].css(n),r.pages[i]&&r.pages[i].css({width:n.width,height:n.height}));return this.turn("resize"),this},resize:function(){var t,e=this.data();for(e.pages[0]&&(e.pageWrap[0].css({left:-this.width()}),e.pages[0].flip("resize",!0)),t=1;t<=e.totalPages;t++)e.pages[t]&&e.pages[t].flip("resize",!0);u._updateShadow.call(this),e.opts.autoCenter&&this.turn("center")},_removeMv:function(t){var e,i=this.data();for(e=0;e0?i[0]:0,i[1]<=e.totalPages?i[1]:0]:[i[0]>0&&i[0]<=e.totalPages?i[0]:0]},stop:function(t,e){if(this.turn("animating")){var i,n,r,a=this.data();for(a.tpage&&(a.page=a.tpage,delete a.tpage),i=0;it;i--)this.turn("removePage",i);return e.totalPages=t,u._fitPage.call(this,e.page),this}return e.totalPages},_missing:function(t){var e=this.data();if(!(e.totalPages<1)){var i,n=this.turn("range",t),r=[];for(i=n[0];i<=n[1];i++)e.pageObjs[i]||r.push(i);r.length>0&&this.trigger("missing",[r])}},_fitPage:function(t){var e=this.data(),i=this.turn("view",t);if(u._missing.call(this,t),e.pageObjs[t]){e.page=t,this.turn("stop");for(var n=0;ns[1]?(i=s[1],n=o[0]):s[0]&&ei?"r":"l"):r.pages[i].flip("turnPage",e>i?"l":"r"):"ltr"==r.direction?r.pages[i].flip("turnPage",h[e>i?1:0]):r.pages[i].flip("turnPage",h[e>i?0:1]))},page:function(e){var i=this.data();if(void 0===e)return i.page;if(!i.disabled&&!i.destroying){if((e=parseInt(e,10))>0&&e<=i.totalPages)return e!=i.page&&(i.done&&-1==t.inArray(e,this.turn("view"))?u._turnPage.call(this,e):u._fitPage.call(this,e)),this;throw S("The page "+e+" does not exist")}},next:function(){return this.turn("page",Math.min(this.data().totalPages,u._view.call(this,this.data().page).pop()+1))},previous:function(){return this.turn("page",Math.max(1,u._view.call(this,this.data().page).shift()-1))},peel:function(t,e){var i,n=this.data(),r=this.turn("view");(e=void 0===e||!0===e,!1===t)?this.turn("stop",null,e):"single"==n.display?n.pages[n.page].flip("peel",t,e):(i="ltr"==n.direction?-1!=t.indexOf("l")?r[0]:r[1]:-1!=t.indexOf("l")?r[1]:r[0],n.pages[i]&&n.pages[i].flip("peel",t,e));return this},_addMotionPage:function(){var e=t(this).data().f.opts,i=e.turn;i.data(),u._addMv.call(i,e.page)},_eventStart:function(t,e,i){var n=e.turn.data(),r=n.pageZoom[e.page];t.isDefaultPrevented()||(r&&r!=n.zoom&&(e.turn.trigger("zoomed",[e.page,e.turn.turn("view",e.page),r,n.zoom]),n.pageZoom[e.page]=n.zoom),"single"==n.display&&i&&("l"==i.charAt(1)&&"ltr"==n.direction||"r"==i.charAt(1)&&"rtl"==n.direction?(e.next=e.nexte.page?e.next:e.page+1),u._addMotionPage.call(t.target)),u._updateShadow.call(e.turn)},_eventEnd:function(e,i,n){t(e.target).data().f;var r=i.turn,a=r.data();if(n){var s=a.tpage||a.page;s!=i.next&&s!=i.page||(delete a.tpage,u._fitPage.call(r,s||i.next,!0))}else u._removeMv.call(r,i.page),u._updateShadow.call(r),r.turn("update")},_eventPressed:function(e){var i=t(e.target).data().f,n=i.opts.turn,r=n.data();return r.pages,r.mouseAction=!0,n.turn("update"),i.time=(new Date).getTime()},_eventReleased:function(e,i){var n,r=t(e.target),a=r.data().f,s=a.opts.turn,o=s.data();n="single"==o.display?"br"==i.corner||"tr"==i.corner?i.xr.width()/2:i.x<0||i.x>r.width(),((new Date).getTime()-a.time<200||n)&&(e.preventDefault(),u._turnPage.call(s,a.opts.next)),o.mouseAction=!1},_flip:function(e){e.stopPropagation();var i=t(e.target).data().f.opts;i.turn.trigger("turn",[i.next]),i.turn.data().opts.autoCenter&&i.turn.turn("center",i.next)},_touchStart:function(){var t=this.data();for(var e in t.pages)if(b(e,t.pages)&&!1===g._eventStart.apply(t.pages[e],arguments))return!1},_touchMove:function(){var t=this.data();for(var e in t.pages)b(e,t.pages)&&g._eventMove.apply(t.pages[e],arguments)},_touchEnd:function(){var t=this.data();for(var e in t.pages)b(e,t.pages)&&g._eventEnd.apply(t.pages[e],arguments)},calculateZ:function(t){var e,i,n,r,a,s=this,o=this.data(),l=this.turn("view"),h=l[0]||l[1],c=t.length-1,d={pageZ:{},partZ:{},pageV:{}},p=function(t){var e=s.turn("view",t);e[0]&&(d.pageV[e[0]]=!0),e[1]&&(d.pageV[e[1]]=!0)};for(e=0;e<=c;e++)i=t[e],n=o.pages[i].data().f.opts.next,r=o.pagePlace[i],p(i),p(n),a=o.pagePlace[n]==n?n:i,d.pageZ[a]=o.totalPages-Math.abs(h-a),d.partZ[r]=2*o.totalPages-c+e;return d},update:function(){var e,i=this.data();if(this.turn("animating")&&0!==i.pageMv[0]){var n,r,a=this.turn("calculateZ",i.pageMv),s=this.turn("corner"),o=this.turn("view"),l=this.turn("view",i.tpage);for(e in i.pageWrap)b(e,i.pageWrap)&&(r=i.pageObjs[e].hasClass("fixed"),i.pageWrap[e].css({display:a.pageV[e]||r?"":"none",zIndex:(i.pageObjs[e].hasClass("hard")?a.partZ[e]:a.pageZ[e])||(r?-1:0)}),(n=i.pages[e])&&(n.flip("z",a.partZ[e]||null),a.pageV[e]&&n.flip("resize"),i.tpage?n.flip("hover",!1).flip("disable",-1==t.inArray(parseInt(e,10),i.pageMv)&&e!=l[0]&&e!=l[1]):n.flip("hover",!1===s).flip("disable",e!=o[0]&&e!=o[1])))}else for(e in i.pageWrap)if(b(e,i.pageWrap)){var h=u._setPageLoc.call(this,e);i.pages[e]&&i.pages[e].flip("disable",i.disabled||1!=h).flip("hover",!0).flip("z",null)}return this},_updateShadow:function(){var e,i,n=this.data(),r=this.width(),a=this.height(),s="single"==n.display?r:r/2;e=this.turn("view"),n.shadow||(n.shadow=t("
",{class:"shadow",css:m(0,0,0).css}).appendTo(this));for(var o=0;o=n||a.y>=r)return!1;var o=g._cAllowed.call(this);switch(i.effect){case"hard":if(a.x>n-s)a.corner="r";else{if(!(a.x=r-s))return!1;a.corner+="b"}if(a.x<=s)a.corner+="l";else{if(!(a.x>=n-s))return!1;a.corner+="r"}}return!(!a.corner||-1==t.inArray(a.corner,o))&&a},_isIArea:function(t){var e=this.data().f.parent.offset();return t=s&&t.originalEvent?t.originalEvent.touches[0]:t,g._cornerActivated.call(this,{x:t.pageX-e.left,y:t.pageY-e.top})},_c:function(t,e){switch(e=e||0,t){case"tl":return y(e,e);case"tr":return y(this.width()-e,e);case"bl":return y(e,this.height()-e);case"br":return y(this.width()-e,this.height()-e);case"l":return y(e,0);case"r":return y(this.width()-e,0)}},_c2:function(t){switch(t){case"tl":case"l":return y(2*this.width(),0);case"tr":case"r":return y(-this.width(),0);case"bl":return y(2*this.width(),this.height());case"br":return y(-this.width(),this.height())}},_foldingPage:function(){var t=this.data().f;if(t){var e=t.opts;return e.turn?"single"==(t=e.turn.data()).display?e.next>1||e.page>1?t.pageObjs[0]:null:t.pageObjs[e.next]:void 0}},_backGradient:function(){var e=this.data().f,i=e.opts.turn.data(),n=i.opts.gradients&&("single"==i.display||2!=e.opts.page&&e.opts.page!=i.totalPages-1);return n&&!e.bshadow&&(e.bshadow=t("
",m(0,0,1)).css({position:"",width:this.width(),height:this.height()}).appendTo(e.parent)),n},type:function(){return this.data().f.effect},resize:function(t){var e=this.data().f,i=e.opts.turn.data(),n=this.width(),r=this.height();switch(e.effect){case"hard":t&&(e.wrapper.css({width:n,height:r}),e.fpage.css({width:n,height:r}),i.opts.gradients&&(e.ashadow.css({width:n,height:r}),e.bshadow.css({width:n,height:r})));break;case"sheet":if(t){var a=Math.round(Math.sqrt(Math.pow(n,2)+Math.pow(r,2)));e.wrapper.css({width:a,height:a}),e.fwrapper.css({width:a,height:a}).children(":first-child").css({width:n,height:r}),e.fpage.css({width:n,height:r}),i.opts.gradients&&e.ashadow.css({width:n,height:r}),g._backGradient.call(this)&&e.bshadow.css({width:n,height:r})}if(e.parent.is(":visible")){var s=T(e.parent[0]);e.fwrapper.css({top:s.top,left:s.left}),s=T(e.opts.turn[0]),e.fparent.css({top:-s.top,left:-s.left})}this.flip("z",e.opts["z-index"])}},_addPageWrapper:function(){var e=this.data().f,i=e.opts.turn.data(),r=this.parent();if(e.parent=r,!e.wrapper)switch(e.effect){case"hard":var a={};a[n+"transform-style"]="preserve-3d",a[n+"backface-visibility"]="hidden",e.wrapper=t("
",m(0,0,2)).css(a).appendTo(r).prepend(this),e.fpage=t("
",m(0,0,1)).css(a).appendTo(r),i.opts.gradients&&(e.ashadow=t("
",m(0,0,0)).hide().appendTo(r),e.bshadow=t("
",m(0,0,0)));break;case"sheet":if(this.width(),this.height(),e.fparent=e.opts.turn.data().fparent,!e.fparent){var s=t("
",{css:{"pointer-events":"none"}}).hide();s.data().flips=0,s.css(m(0,0,"auto","visible").css).appendTo(e.opts.turn),e.opts.turn.data().fparent=s,e.fparent=s}this.css({position:"absolute",top:0,left:0,bottom:"auto",right:"auto"}),e.wrapper=t("
",m(0,0,this.css("z-index"))).appendTo(r).prepend(this),e.fwrapper=t("
",m(r.offset().top,r.offset().left)).hide().appendTo(e.fparent),e.fpage=t("
",m(0,0,0,"visible")).css({cursor:"default"}).appendTo(e.fwrapper),i.opts.gradients&&(e.ashadow=t("
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