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38 KiB
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).window=t.window||{})}(this,(function(t){"use strict";const e=(t,e=1e4)=>(t=parseFloat(t+"")||0,Math.round((t+Number.EPSILON)*e)/e),i=function(t,e=void 0){return!(!t||t===document.body||e&&t===e)&&(function(t){if(!(t&&t instanceof Element&&t.offsetParent))return!1;const e=t.scrollHeight>t.clientHeight,i=window.getComputedStyle(t).overflowY,n=-1!==i.indexOf("hidden"),s=-1!==i.indexOf("visible");return e&&!n&&!s}(t)?t:i(t.parentElement,e))},n=t=>`${t||""}`.split(" ").filter((t=>!!t)),s=(t,e,i)=>{n(e).forEach((e=>{t&&t.classList.toggle(e,i||!1)}))};class o{constructor(t){Object.defineProperty(this,"pageX",{enumerable:!0,configurable:!0,writable:!0,value:void 0}),Object.defineProperty(this,"pageY",{enumerable:!0,configurable:!0,writable:!0,value:void 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f;!function(t){t[t.Init=0]="Init",t[t.Error=1]="Error",t[t.Ready=2]="Ready",t[t.Panning=3]="Panning",t[t.Mousemove=4]="Mousemove",t[t.Destroy=5]="Destroy"}(f||(f={}));const m=["a","b","c","d","e","f"],p={content:null,width:"auto",height:"auto",panMode:"drag",touch:!0,dragMinThreshold:3,lockAxis:!1,mouseMoveFactor:1,mouseMoveFriction:.12,zoom:!0,pinchToZoom:!0,panOnlyZoomed:"auto",minScale:1,maxScale:2,friction:.25,dragFriction:.35,decelFriction:.05,click:"toggleZoom",dblClick:!1,wheel:"zoom",wheelLimit:7,spinner:!0,bounds:"auto",infinite:!1,rubberband:!0,bounce:!0,maxVelocity:75,transformParent:!1,classes:{content:"f-panzoom__content",isLoading:"is-loading",canZoomIn:"can-zoom_in",canZoomOut:"can-zoom_out",isDraggable:"is-draggable",isDragging:"is-dragging",inFullscreen:"in-fullscreen",htmlHasFullscreen:"with-panzoom-in-fullscreen"},l10n:{PANUP:"Move up",PANDOWN:"Move down",PANLEFT:"Move left",PANRIGHT:"Move right",ZOOMIN:"Zoom in",ZOOMOUT:"Zoom out",TOGGLEZOOM:"Toggle zoom 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n;if(super(e),Object.defineProperty(this,"pointerTracker",{enumerable:!0,configurable:!0,writable:!0,value:null}),Object.defineProperty(this,"resizeObserver",{enumerable:!0,configurable:!0,writable:!0,value:null}),Object.defineProperty(this,"updateTimer",{enumerable:!0,configurable:!0,writable:!0,value:null}),Object.defineProperty(this,"clickTimer",{enumerable:!0,configurable:!0,writable:!0,value:null}),Object.defineProperty(this,"rAF",{enumerable:!0,configurable:!0,writable:!0,value:null}),Object.defineProperty(this,"isTicking",{enumerable:!0,configurable:!0,writable:!0,value:!1}),Object.defineProperty(this,"friction",{enumerable:!0,configurable:!0,writable:!0,value:0}),Object.defineProperty(this,"ignoreBounds",{enumerable:!0,configurable:!0,writable:!0,value:!1}),Object.defineProperty(this,"isBouncingX",{enumerable:!0,configurable:!0,writable:!0,value:!1}),Object.defineProperty(this,"isBouncingY",{enumerable:!0,configurable:!0,writable:!0,value:!1}),Object.defineProperty(this,"clicks",{enumerable:!0,configurable:!0,writable:!0,value:0}),Object.defineProperty(this,"trackingPoints",{enumerable:!0,configurable:!0,writable:!0,value:[]}),Object.defineProperty(this,"pwt",{enumerable:!0,configurable:!0,writable:!0,value:0}),Object.defineProperty(this,"cwd",{enumerable:!0,configurable:!0,writable:!0,value:0}),Object.defineProperty(this,"pmme",{enumerable:!0,configurable:!0,writable:!0,value:void 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0}),Object.defineProperty(this,"spinner",{enumerable:!0,configurable:!0,writable:!0,value:null}),Object.defineProperty(this,"containerRect",{enumerable:!0,configurable:!0,writable:!0,value:{width:0,height:0,innerWidth:0,innerHeight:0}}),Object.defineProperty(this,"contentRect",{enumerable:!0,configurable:!0,writable:!0,value:{top:0,right:0,bottom:0,left:0,fullWidth:0,fullHeight:0,fitWidth:0,fitHeight:0,width:0,height:0}}),Object.defineProperty(this,"dragStart",{enumerable:!0,configurable:!0,writable:!0,value:{x:0,y:0,top:0,left:0,time:0}}),Object.defineProperty(this,"dragOffset",{enumerable:!0,configurable:!0,writable:!0,value:{x:0,y:0,time:0}}),Object.defineProperty(this,"current",{enumerable:!0,configurable:!0,writable:!0,value:Object.assign({},y)}),Object.defineProperty(this,"target",{enumerable:!0,configurable:!0,writable:!0,value:Object.assign({},y)}),Object.defineProperty(this,"velocity",{enumerable:!0,configurable:!0,writable:!0,value:{a:0,b:0,c:0,d:0,e:0,f:0}}),Object.defineProperty(this,"lockedAxis",{enumerable:!0,configurable:!0,writable:!0,value:!1}),!t)throw new Error("Container Element Not Found");this.container=t,this.initContent(),this.attachPlugins(Object.assign(Object.assign({},E.Plugins),i)),this.emit("attachPlugins"),this.emit("init");const s=this.content;if(s.addEventListener("load",this.onLoad),s.addEventListener("error",this.onError),this.isContentLoading){if(this.option("spinner")){t.classList.add(this.cn("isLoading"));const e=function(t){var e=(new DOMParser).parseFromString(t,"text/html").body;if(e.childElementCount>1){for(var i=document.createElement("div");e.firstChild;)i.appendChild(e.firstChild);return i}return e.firstChild}('<div class="f-spinner"><svg viewBox="0 0 50 50"><circle cx="25" cy="25" r="20"></circle><circle cx="25" cy="25" r="20"></circle></svg></div>');!t.contains(s)||s.parentElement instanceof HTMLPictureElement?this.spinner=t.appendChild(e):this.spinner=(null===(n=s.parentElement)||void 0===n?void 0:n.insertBefore(e,s))||null}this.emit("beforeLoad")}else queueMicrotask((()=>{this.enable()}))}initContent(){const{container:t}=this,e=this.cn(O);let i=this.option(O)||t.querySelector(`.${e}`);if(i||(i=t.querySelector("img,picture")||t.firstElementChild,i&&v(i,e)),i instanceof HTMLPictureElement&&(i=i.querySelector("img")),!i)throw new Error("No content found");this.content=i}onLoad(){const{spinner:t,container:e,state:i}=this;t&&(t.remove(),this.spinner=null),this.option("spinner")&&e.classList.remove(this.cn("isLoading")),this.emit("afterLoad"),i===f.Init?this.enable():this.updateMetrics()}onError(){this.state!==f.Destroy&&(this.spinner&&(this.spinner.remove(),this.spinner=null),this.stop(),this.detachEvents(),this.state=f.Error,this.emit("error"))}attachObserver(){var t;const e=()=>{const{container:t,containerRect:e}=this;return Math.abs(e.width-t.getBoundingClientRect().width)>.1||Math.abs(e.height-t.getBoundingClientRect().height)>.1};this.resizeObserver||void 0===window.ResizeObserver||(this.resizeObserver=new ResizeObserver((()=>{this.updateTimer||(e()?(this.onResize(),this.isMobile&&(this.updateTimer=setTimeout((()=>{e()&&this.onResize(),this.updateTimer=null}),500))):this.updateTimer&&(clearTimeout(this.updateTimer),this.updateTimer=null))}))),null===(t=this.resizeObserver)||void 0===t||t.observe(this.container)}detachObserver(){var t;null===(t=this.resizeObserver)||void 0===t||t.disconnect()}attachEvents(){const{container:t}=this;t.addEventListener("click",this.onClick,{passive:!1,capture:!1}),t.addEventListener("wheel",this.onWheel,{passive:!1}),this.pointerTracker=new a(t,{start:this.onPointerDown,move:this.onPointerMove,end:this.onPointerUp}),document.addEventListener(P,this.onMouseMove)}detachEvents(){var t;const{container:e}=this;e.removeEventListener("click",this.onClick,{passive:!1,capture:!1}),e.removeEventListener("wheel",this.onWheel,{passive:!1}),null===(t=this.pointerTracker)||void 0===t||t.stop(),this.pointerTracker=null,document.removeEventListener(P,this.onMouseMove),document.removeEventListener("keydown",this.onKeydown,!0),this.clickTimer&&(clearTimeout(this.clickTimer),this.clickTimer=null),this.updateTimer&&(clearTimeout(this.updateTimer),this.updateTimer=null)}animate(){const t=this.friction;this.setTargetForce();const e=this.option("maxVelocity");for(const i of m)t?(this.velocity[i]*=1-t,e&&!this.isScaling&&(this.velocity[i]=Math.max(Math.min(this.velocity[i],e),-1*e)),this.current[i]+=this.velocity[i]):this.current[i]=this.target[i];this.setTransform(),this.setEdgeForce(),!this.isResting||this.isDragging?this.rAF=requestAnimationFrame((()=>this.animate())):this.stop("current")}setTargetForce(){for(const t of m)"e"===t&&this.isBouncingX||"f"===t&&this.isBouncingY||(this.velocity[t]=(1/(1-this.friction)-1)*(this.target[t]-this.current[t]))}checkBounds(t=0,e=0){const{current:i}=this,n=i.e+t,s=i.f+e,o=this.getBounds(),{x:r,y:a}=o,h=r.min,c=r.max,l=a.min,u=a.max;let d=0,g=0;return h!==1/0&&n<h?d=h-n:c!==1/0&&n>c&&(d=c-n),l!==1/0&&s<l?g=l-s:u!==1/0&&s>u&&(g=u-s),Math.abs(d)<.001&&(d=0),Math.abs(g)<.001&&(g=0),Object.assign(Object.assign({},o),{xDiff:d,yDiff:g,inBounds:!d&&!g})}clampTargetBounds(){const{target:t}=this,{x:e,y:i}=this.getBounds();e.min!==1/0&&(t.e=Math.max(t.e,e.min)),e.max!==1/0&&(t.e=Math.min(t.e,e.max)),i.min!==1/0&&(t.f=Math.max(t.f,i.min)),i.max!==1/0&&(t.f=Math.min(t.f,i.max))}calculateContentDim(t=this.current){const{content:e,contentRect:i}=this,{fitWidth:n,fitHeight:s,fullWidth:o,fullHeight:r}=i;let a=o,h=r;if(this.option("zoom")||0!==this.angle){const i=!(e instanceof HTMLImageElement)&&("none"===window.getComputedStyle(e).maxWidth||"none"===window.getComputedStyle(e).maxHeight),c=i?o:n,l=i?r:s,u=this.getMatrix(t),d=new DOMPoint(0,0).matrixTransform(u),g=new DOMPoint(0+c,0).matrixTransform(u),f=new DOMPoint(0+c,0+l).matrixTransform(u),m=new DOMPoint(0,0+l).matrixTransform(u),p=Math.abs(f.x-d.x),b=Math.abs(f.y-d.y),v=Math.abs(m.x-g.x),y=Math.abs(m.y-g.y);a=Math.max(p,v),h=Math.max(b,y)}return{contentWidth:a,contentHeight:h}}setEdgeForce(){if(this.ignoreBounds||this.isDragging||this.panMode===P||this.targetScale<this.scale)return this.isBouncingX=!1,void(this.isBouncingY=!1);const{target:t}=this,{x:e,y:i,xDiff:n,yDiff:s}=this.checkBounds();const o=this.option("maxVelocity");let r=this.velocity.e,a=this.velocity.f;0!==n?(this.isBouncingX=!0,n*r<=0?r+=.14*n:(r=.14*n,e.min!==1/0&&(this.target.e=Math.max(t.e,e.min)),e.max!==1/0&&(this.target.e=Math.min(t.e,e.max))),o&&(r=Math.max(Math.min(r,o),-1*o))):this.isBouncingX=!1,0!==s?(this.isBouncingY=!0,s*a<=0?a+=.14*s:(a=.14*s,i.min!==1/0&&(this.target.f=Math.max(t.f,i.min)),i.max!==1/0&&(this.target.f=Math.min(t.f,i.max))),o&&(a=Math.max(Math.min(a,o),-1*o))):this.isBouncingY=!1,this.isBouncingX&&(this.velocity.e=r),this.isBouncingY&&(this.velocity.f=a)}enable(){const{content:t}=this,e=new DOMMatrixReadOnly(window.getComputedStyle(t).transform);for(const t of m)this.current[t]=this.target[t]=e[t];this.updateMetrics(),this.attachObserver(),this.attachEvents(),this.state=f.Ready,this.emit("ready")}onClick(t){var e;this.isDragging&&(null===(e=this.pointerTracker)||void 0===e||e.clear(),this.trackingPoints=[],this.startDecelAnim());const i=t.target;if(!i||t.defaultPrevented)return;if(i.hasAttribute("disabled"))return t.preventDefault(),void t.stopPropagation();if((()=>{const t=window.getSelection();return t&&"Range"===t.type})()&&!i.closest("button"))return;const n=i.closest("[data-panzoom-action]"),s=i.closest("[data-panzoom-change]"),o=n||s,r=o&&((a=o)&&null!==a&&a instanceof Element&&"nodeType"in a)?o.dataset:null;var a;if(r){const e=r.panzoomChange,i=r.panzoomAction;if((e||i)&&t.preventDefault(),e){let t={};try{t=JSON.parse(e)}catch(t){console&&console.warn("The given data was not valid JSON")}return void this.applyChange(t)}if(i)return void(this[i]&&this[i]())}if(Math.abs(this.dragOffset.x)>3||Math.abs(this.dragOffset.y)>3)return t.preventDefault(),void t.stopPropagation();if(i.closest("[data-fancybox]"))return;const h=this.content.getBoundingClientRect(),c=this.dragStart;if(c.time&&!this.canZoomOut()&&(Math.abs(h.x-c.x)>2||Math.abs(h.y-c.y)>2))return;this.dragStart.time=0;const l=e=>{this.option("zoom",t)&&e&&"string"==typeof e&&/(iterateZoom)|(toggle(Zoom|Full|Cover|Max)|(zoomTo(Fit|Cover|Max)))/.test(e)&&"function"==typeof this[e]&&(t.preventDefault(),this[e]({event:t}))},u=this.option("click",t),d=this.option("dblClick",t);d?(this.clicks++,1==this.clicks&&(this.clickTimer=setTimeout((()=>{1===this.clicks?(this.emit("click",t),!t.defaultPrevented&&u&&l(u)):(this.emit("dblClick",t),t.defaultPrevented||l(d)),this.clicks=0,this.clickTimer=null}),350))):(this.emit("click",t),!t.defaultPrevented&&u&&l(u))}addTrackingPoint(t){const e=this.trackingPoints.filter((t=>t.time>Date.now()-100));e.push(t),this.trackingPoints=e}onPointerDown(t,e,i){var n;if(!1===this.option("touch",t))return!1;this.pwt=0,this.dragOffset={x:0,y:0,time:0},this.trackingPoints=[];const s=this.content.getBoundingClientRect();if(this.dragStart={x:s.x,y:s.y,top:s.top,left:s.left,time:Date.now()},this.clickTimer)return!1;if(this.panMode===P&&this.targetScale>1)return t.preventDefault(),t.stopPropagation(),!1;const o=t.composedPath()[0];if(!i.length){if(["TEXTAREA","OPTION","INPUT","SELECT","VIDEO","IFRAME"].includes(o.nodeName)||o.closest("[contenteditable],[data-selectable],[data-draggable],[data-clickable],[data-panzoom-change],[data-panzoom-action]"))return!1;null===(n=window.getSelection())||void 0===n||n.removeAllRanges()}if("mousedown"===t.type)["A","BUTTON"].includes(o.nodeName)||t.preventDefault();else if(Math.abs(this.velocity.a)>.3)return!1;return this.target.e=this.current.e,this.target.f=this.current.f,this.stop(),this.isDragging||(this.isDragging=!0,this.addTrackingPoint(e),this.emit("touchStart",t)),!0}onPointerMove(t,n,s){if(!1===this.option("touch",t))return;if(!this.isDragging)return;if(n.length<2&&this.panOnlyZoomed&&e(this.targetScale)<=e(this.minScale))return;if(this.emit("touchMove",t),t.defaultPrevented)return;this.addTrackingPoint(n[0]);const{content:o}=this,r=c(s[0],s[1]),a=c(n[0],n[1]);let l=0,u=0;if(n.length>1){const t=o.getBoundingClientRect();l=r.clientX-t.left-.5*t.width,u=r.clientY-t.top-.5*t.height}const d=h(s[0],s[1]),g=h(n[0],n[1]);let f=d?g/d:1,m=a.clientX-r.clientX,p=a.clientY-r.clientY;this.dragOffset.x+=m,this.dragOffset.y+=p,this.dragOffset.time=Date.now()-this.dragStart.time;let b=e(this.targetScale)===e(this.minScale)&&this.option("lockAxis");if(b&&!this.lockedAxis)if("xy"===b||"y"===b||"touchmove"===t.type){if(Math.abs(this.dragOffset.x)<6&&Math.abs(this.dragOffset.y)<6)return void t.preventDefault();const e=Math.abs(180*Math.atan2(this.dragOffset.y,this.dragOffset.x)/Math.PI);this.lockedAxis=e>45&&e<135?"y":"x",this.dragOffset.x=0,this.dragOffset.y=0,m=0,p=0}else this.lockedAxis=b;if(i(t.target,this.content)&&(b="x",this.dragOffset.y=0),b&&"xy"!==b&&this.lockedAxis!==b&&e(this.targetScale)===e(this.minScale))return;t.cancelable&&t.preventDefault(),this.container.classList.add(this.cn("isDragging"));const v=this.checkBounds(m,p);this.option("rubberband")?("x"!==this.isInfinite&&(v.xDiff>0&&m<0||v.xDiff<0&&m>0)&&(m*=Math.max(0,.5-Math.abs(.75/this.contentRect.fitWidth*v.xDiff))),"y"!==this.isInfinite&&(v.yDiff>0&&p<0||v.yDiff<0&&p>0)&&(p*=Math.max(0,.5-Math.abs(.75/this.contentRect.fitHeight*v.yDiff)))):(v.xDiff&&(m=0),v.yDiff&&(p=0));const y=this.targetScale,w=this.minScale,M=this.maxScale;y<.5*w&&(f=Math.max(f,w)),y>1.5*M&&(f=Math.min(f,M)),"y"===this.lockedAxis&&e(y)===e(w)&&(m=0),"x"===this.lockedAxis&&e(y)===e(w)&&(p=0),this.applyChange({originX:l,originY:u,panX:m,panY:p,scale:f,friction:this.option("dragFriction"),ignoreBounds:!0})}onPointerUp(t,e,n){if(n.length)return this.dragOffset.x=0,this.dragOffset.y=0,void(this.trackingPoints=[]);this.container.classList.remove(this.cn("isDragging")),this.isDragging&&(this.addTrackingPoint(e),this.panOnlyZoomed&&this.contentRect.width-this.contentRect.fitWidth<1&&this.contentRect.height-this.contentRect.fitHeight<1&&(this.trackingPoints=[]),i(t.target,this.content)&&"y"===this.lockedAxis&&(this.trackingPoints=[]),this.emit("touchEnd",t),this.isDragging=!1,this.lockedAxis=!1,this.state!==f.Destroy&&(t.defaultPrevented||this.startDecelAnim()))}startDecelAnim(){var t;const i=this.isScaling;this.rAF&&(cancelAnimationFrame(this.rAF),this.rAF=null),this.isBouncingX=!1,this.isBouncingY=!1;for(const t of m)this.velocity[t]=0;this.target.e=this.current.e,this.target.f=this.current.f,b(this.container,"is-scaling"),b(this.container,"is-animating"),this.isTicking=!1;const{trackingPoints:n}=this,s=n[0],o=n[n.length-1];let r=0,a=0,h=0;o&&s&&(r=o.clientX-s.clientX,a=o.clientY-s.clientY,h=o.time-s.time);const c=(null===(t=window.visualViewport)||void 0===t?void 0:t.scale)||1;1!==c&&(r*=c,a*=c);let l=0,u=0,d=0,g=0,f=this.option("decelFriction");const p=this.targetScale;if(h>0){d=Math.abs(r)>3?r/(h/30):0,g=Math.abs(a)>3?a/(h/30):0;const t=this.option("maxVelocity");t&&(d=Math.max(Math.min(d,t),-1*t),g=Math.max(Math.min(g,t),-1*t))}d&&(l=d/(1/(1-f)-1)),g&&(u=g/(1/(1-f)-1)),("y"===this.option("lockAxis")||"xy"===this.option("lockAxis")&&"y"===this.lockedAxis&&e(p)===this.minScale)&&(l=d=0),("x"===this.option("lockAxis")||"xy"===this.option("lockAxis")&&"x"===this.lockedAxis&&e(p)===this.minScale)&&(u=g=0);const v=this.dragOffset.x,y=this.dragOffset.y,w=this.option("dragMinThreshold")||0;Math.abs(v)<w&&Math.abs(y)<w&&(l=u=0,d=g=0),(p<this.minScale-1e-5||p>this.maxScale+1e-5||i&&!l&&!u)&&(f=.35),this.applyChange({panX:l,panY:u,friction:f}),this.emit("decel",d,g,v,y)}onWheel(t){var e=[-t.deltaX||0,-t.deltaY||0,-t.detail||0].reduce((function(t,e){return Math.abs(e)>Math.abs(t)?e:t}));const i=Math.max(-1,Math.min(1,e));if(this.emit("wheel",t,i),this.panMode===P)return;if(t.defaultPrevented)return;const n=this.option("wheel");"pan"===n?(t.preventDefault(),this.panOnlyZoomed&&!this.canZoomOut()||this.applyChange({panX:2*-t.deltaX,panY:2*-t.deltaY,bounce:!1})):"zoom"===n&&!1!==this.option("zoom")&&this.zoomWithWheel(t)}onMouseMove(t){this.panWithMouse(t)}onKeydown(t){"Escape"===t.key&&this.toggleFS()}onResize(){this.updateMetrics(),this.checkBounds().inBounds||this.requestTick()}setTransform(){this.emit("beforeTransform");const{current:t,target:i,content:n,contentRect:s}=this,o=Object.assign({},y);for(const n of m){const s="e"==n||"f"===n?M:w;o[n]=e(t[n],s),Math.abs(i[n]-t[n])<("e"==n||"f"===n?.51:.001)&&(t[n]=i[n])}let{a:r,b:a,c:h,d:c,e:l,f:u}=o,d=`matrix(${r}, ${a}, ${h}, ${c}, ${l}, ${u})`,g=n.parentElement instanceof HTMLPictureElement?n.parentElement:n;if(this.option("transformParent")&&(g=g.parentElement||g),g.style.transform===d)return;g.style.transform=d;const{contentWidth:f,contentHeight:p}=this.calculateContentDim();s.width=f,s.height=p,this.emit("afterTransform")}updateMetrics(t=!1){var i;if(!this||this.state===f.Destroy)return;if(this.isContentLoading)return;const n=Math.max(1,(null===(i=window.visualViewport)||void 0===i?void 0:i.scale)||1),{container:s,content:o}=this,r=o instanceof HTMLImageElement,a=s.getBoundingClientRect(),h=getComputedStyle(this.container);let c=a.width*n,l=a.height*n;const u=parseFloat(h.paddingTop)+parseFloat(h.paddingBottom),d=c-(parseFloat(h.paddingLeft)+parseFloat(h.paddingRight)),g=l-u;this.containerRect={width:c,height:l,innerWidth:d,innerHeight:g};let m=this.option("width")||"auto",p=this.option("height")||"auto";"auto"===m&&(m=parseFloat(o.dataset.width||"")||(t=>{let e=0;return e=t instanceof HTMLImageElement?t.naturalWidth:t instanceof SVGElement?t.width.baseVal.value:Math.max(t.offsetWidth,t.scrollWidth),e||0})(o)),"auto"===p&&(p=parseFloat(o.dataset.height||"")||(t=>{let e=0;return e=t instanceof HTMLImageElement?t.naturalHeight:t instanceof SVGElement?t.height.baseVal.value:Math.max(t.offsetHeight,t.scrollHeight),e||0})(o));let b=o.parentElement instanceof HTMLPictureElement?o.parentElement:o;this.option("transformParent")&&(b=b.parentElement||b);const v=b.getAttribute("style")||"";b.style.setProperty("transform","none","important"),r&&(b.style.width="",b.style.height=""),b.offsetHeight;const y=o.getBoundingClientRect();let w=y.width*n,M=y.height*n,P=0,x=0;r&&(Math.abs(m-w)>1||Math.abs(p-M)>1)&&({width:w,height:M,top:P,left:x}=((t,e,i,n)=>{const s=i/n;return s>t/e?(i=t,n=t/s):(i=e*s,n=e),{width:i,height:n,top:.5*(e-n),left:.5*(t-i)}})(w,M,m,p)),this.contentRect=Object.assign(Object.assign({},this.contentRect),{top:y.top-a.top+P,bottom:a.bottom-y.bottom+P,left:y.left-a.left+x,right:a.right-y.right+x,fitWidth:w,fitHeight:M,width:w,height:M,fullWidth:m,fullHeight:p}),b.style.cssText=v,r&&(b.style.width=`${w}px`,b.style.height=`${M}px`),this.setTransform(),!0!==t&&this.emit("refresh"),this.ignoreBounds||(e(this.targetScale)<e(this.minScale)?this.zoomTo(this.minScale,{friction:0}):this.targetScale>this.maxScale?this.zoomTo(this.maxScale,{friction:0}):this.state===f.Init||this.checkBounds().inBounds||this.requestTick()),this.updateControls()}getBounds(){const t=this.option("bounds");if("auto"!==t)return t;const{contentWidth:i,contentHeight:n}=this.calculateContentDim(this.target);let s=0,o=0,r=0,a=0;const h=this.option("infinite");if(!0===h||this.lockedAxis&&h===this.lockedAxis)s=-1/0,r=1/0,o=-1/0,a=1/0;else{let{containerRect:t,contentRect:h}=this,c=e(this.contentRect.fitWidth*this.targetScale,M),l=e(this.contentRect.fitHeight*this.targetScale,M),{innerWidth:u,innerHeight:d}=t;if(this.containerRect.width===c&&(u=t.width),this.containerRect.width===l&&(d=t.height),i>u){r=.5*(i-u),s=-1*r;let t=.5*(h.right-h.left);s+=t,r+=t}if(this.contentRect.fitWidth>u&&i<u&&(s-=.5*(this.contentRect.fitWidth-u),r-=.5*(this.contentRect.fitWidth-u)),n>d){a=.5*(n-d),o=-1*a;let t=.5*(h.bottom-h.top);o+=t,a+=t}this.contentRect.fitHeight>d&&n<d&&(s-=.5*(this.contentRect.fitHeight-d),r-=.5*(this.contentRect.fitHeight-d))}return{x:{min:s,max:r},y:{min:o,max:a}}}updateControls(){const t=this,i=t.container,{panMode:n,contentRect:o,fullScale:r,targetScale:a,coverScale:h,maxScale:c,minScale:l}=t;let u={toggleMax:a-l<.5*(c-l)?c:l,toggleCover:a-l<.5*(h-l)?h:l,toggleZoom:a-l<.5*(r-l)?r:l}[t.option("click")||""]||l,d=t.canZoomIn(),g=t.canZoomOut(),f=n===x&&!!this.option("touch"),m=g&&f;if(f&&(e(a)<e(l)&&!this.panOnlyZoomed&&(m=!0),(e(o.width,1)>e(o.fitWidth,1)||e(o.height,1)>e(o.fitHeight,1))&&(m=!0)),e(o.width*a,1)<e(o.fitWidth,1)&&(m=!1),n===P&&(m=!1),s(i,this.cn("isDraggable"),m),!this.option("zoom"))return;let p=d&&e(u)>e(a),b=!p&&!m&&g&&e(u)<e(a);s(i,this.cn("canZoomIn"),p),s(i,this.cn("canZoomOut"),b);for(const t of i.querySelectorAll('[data-panzoom-action="zoomIn"]'))d?(t.removeAttribute("disabled"),t.removeAttribute("tabindex")):(t.setAttribute("disabled",""),t.setAttribute("tabindex","-1"));for(const t of i.querySelectorAll('[data-panzoom-action="zoomOut"]'))g?(t.removeAttribute("disabled"),t.removeAttribute("tabindex")):(t.setAttribute("disabled",""),t.setAttribute("tabindex","-1"));for(const t of i.querySelectorAll('[data-panzoom-action="toggleZoom"],[data-panzoom-action="iterateZoom"]')){d||g?(t.removeAttribute("disabled"),t.removeAttribute("tabindex")):(t.setAttribute("disabled",""),t.setAttribute("tabindex","-1"));const e=t.querySelector("g");e&&(e.style.display=d?"":"none")}}panTo({x:t=this.target.e,y:e=this.target.f,scale:i=this.targetScale,friction:n=this.option("friction"),angle:s=0,originX:o=0,originY:r=0,flipX:a=!1,flipY:h=!1,ignoreBounds:c=!1}){this.state!==f.Destroy&&this.applyChange({panX:t-this.target.e,panY:e-this.target.f,scale:i/this.targetScale,angle:s,originX:o,originY:r,friction:n,flipX:a,flipY:h,ignoreBounds:c})}applyChange({panX:t=0,panY:i=0,scale:n=1,angle:s=0,originX:o=-this.current.e,originY:r=-this.current.f,friction:a=this.option("friction"),flipX:h=!1,flipY:c=!1,ignoreBounds:l=!1,bounce:u=this.option("bounce")}){const d=this.state;if(d===f.Destroy)return;this.rAF&&(cancelAnimationFrame(this.rAF),this.rAF=null),this.friction=a||0,this.ignoreBounds=l;const{current:g}=this,p=g.e,b=g.f,v=this.getMatrix(this.target);let y=(new DOMMatrix).translate(p,b).translate(o,r).translate(t,i);if(this.option("zoom")){if(!l){const t=this.targetScale,e=this.minScale,i=this.maxScale;t*n<e&&(n=e/t),t*n>i&&(n=i/t)}y=y.scale(n)}y=y.translate(-o,-r).translate(-p,-b).multiply(v),s&&(y=y.rotate(s)),h&&(y=y.scale(-1,1)),c&&(y=y.scale(1,-1));for(const t of m)"e"!==t&&"f"!==t&&(y[t]>this.minScale+1e-5||y[t]<this.minScale-1e-5)?this.target[t]=y[t]:this.target[t]=e(y[t],M);(this.targetScale<this.scale||Math.abs(n-1)>.1||this.panMode===P||!1===u)&&!l&&this.clampTargetBounds(),d===f.Init?this.animate():this.isResting||(this.state=f.Panning,this.requestTick())}stop(t=!1){if(this.state===f.Init||this.state===f.Destroy)return;const e=this.isTicking;this.rAF&&(cancelAnimationFrame(this.rAF),this.rAF=null),this.isBouncingX=!1,this.isBouncingY=!1;for(const e of m)this.velocity[e]=0,"current"===t?this.current[e]=this.target[e]:"target"===t&&(this.target[e]=this.current[e]);this.setTransform(),b(this.container,"is-scaling"),b(this.container,"is-animating"),this.isTicking=!1,this.state=f.Ready,e&&(this.emit("endAnimation"),this.updateControls())}requestTick(){this.isTicking||(this.emit("startAnimation"),this.updateControls(),v(this.container,"is-animating"),this.isScaling&&v(this.container,"is-scaling")),this.isTicking=!0,this.rAF||(this.rAF=requestAnimationFrame((()=>this.animate())))}panWithMouse(t,i=this.option("mouseMoveFriction")){if(this.pmme=t,this.panMode!==P||!t)return;if(e(this.targetScale)<=e(this.minScale))return;this.emit("mouseMove",t);const{container:n,containerRect:s,contentRect:o}=this,r=s.width,a=s.height,h=n.getBoundingClientRect(),c=(t.clientX||0)-h.left,l=(t.clientY||0)-h.top;let{contentWidth:u,contentHeight:d}=this.calculateContentDim(this.target);const g=this.option("mouseMoveFactor");g>1&&(u!==r&&(u*=g),d!==a&&(d*=g));let f=.5*(u-r)-c/r*100/100*(u-r);f+=.5*(o.right-o.left);let m=.5*(d-a)-l/a*100/100*(d-a);m+=.5*(o.bottom-o.top),this.applyChange({panX:f-this.target.e,panY:m-this.target.f,friction:i})}zoomWithWheel(t){if(this.state===f.Destroy||this.state===f.Init)return;const i=Date.now();if(i-this.pwt<45)return void t.preventDefault();this.pwt=i;var n=[-t.deltaX||0,-t.deltaY||0,-t.detail||0].reduce((function(t,e){return Math.abs(e)>Math.abs(t)?e:t}));const s=Math.max(-1,Math.min(1,n)),{targetScale:o,maxScale:r,minScale:a}=this;let h=o*(100+45*s)/100;e(h)<e(a)&&e(o)<=e(a)?(this.cwd+=Math.abs(s),h=a):e(h)>e(r)&&e(o)>=e(r)?(this.cwd+=Math.abs(s),h=r):(this.cwd=0,h=Math.max(Math.min(h,r),a)),this.cwd>this.option("wheelLimit")||(t.preventDefault(),e(h)!==e(o)&&this.zoomTo(h,{event:t}))}canZoomIn(){return this.option("zoom")&&(e(this.contentRect.width,1)<e(this.contentRect.fitWidth,1)||e(this.targetScale)<e(this.maxScale))}canZoomOut(){return this.option("zoom")&&e(this.targetScale)>e(this.minScale)}zoomIn(t=1.25,e){this.zoomTo(this.targetScale*t,e)}zoomOut(t=.8,e){this.zoomTo(this.targetScale*t,e)}zoomToFit(t){this.zoomTo("fit",t)}zoomToCover(t){this.zoomTo("cover",t)}zoomToFull(t){this.zoomTo("full",t)}zoomToMax(t){this.zoomTo("max",t)}toggleZoom(t){this.zoomTo(this.targetScale-this.minScale<.5*(this.fullScale-this.minScale)?"full":"fit",t)}toggleMax(t){this.zoomTo(this.targetScale-this.minScale<.5*(this.maxScale-this.minScale)?"max":"fit",t)}toggleCover(t){this.zoomTo(this.targetScale-this.minScale<.5*(this.coverScale-this.minScale)?"cover":"fit",t)}iterateZoom(t){this.zoomTo("next",t)}zoomTo(t=1,{friction:e="auto",originX:i="auto",originY:n="auto",event:s}={}){if(this.isContentLoading||this.state===f.Destroy)return;const{targetScale:o}=this;this.stop();let r=1;if(this.panMode===P&&(s=this.pmme||s),s||"auto"===i||"auto"===n){const t=this.content.getBoundingClientRect(),e=this.container.getBoundingClientRect(),o=s?s.clientX:e.left+.5*e.width,r=s?s.clientY:e.top+.5*e.height;i=o-t.left-.5*t.width,n=r-t.top-.5*t.height}const a=this.fullScale,h=this.maxScale;let c=this.coverScale;"number"==typeof t?r=t/o:("next"===t&&(a-c<.2&&(c=a),t=o<a-1e-5?"full":o<h-1e-5?"max":"fit"),r="full"===t?a/o||1:"cover"===t?c/o||1:"max"===t?h/o||1:1/o||1),e="auto"===e?r>1?.15:.25:e,this.applyChange({scale:r,originX:i,originY:n,friction:e}),s&&this.panMode===P&&this.panWithMouse(s,e)}rotateCCW(){this.applyChange({angle:-90})}rotateCW(){this.applyChange({angle:90})}flipX(){this.applyChange({flipX:!0})}flipY(){this.applyChange({flipY:!0})}fitX(){this.stop("target");const{containerRect:t,contentRect:e,target:i}=this;this.applyChange({panX:.5*t.width-(e.left+.5*e.fitWidth)-i.e,panY:.5*t.height-(e.top+.5*e.fitHeight)-i.f,scale:t.width/e.fitWidth/this.targetScale,originX:0,originY:0,ignoreBounds:!0})}fitY(){this.stop("target");const{containerRect:t,contentRect:e,target:i}=this;this.applyChange({panX:.5*t.width-(e.left+.5*e.fitWidth)-i.e,panY:.5*t.innerHeight-(e.top+.5*e.fitHeight)-i.f,scale:t.height/e.fitHeight/this.targetScale,originX:0,originY:0,ignoreBounds:!0})}toggleFS(){const{container:t}=this,e=this.cn("inFullscreen"),i=this.cn("htmlHasFullscreen");t.classList.toggle(e);const n=t.classList.contains(e);n?(document.documentElement.classList.add(i),document.addEventListener("keydown",this.onKeydown,!0)):(document.documentElement.classList.remove(i),document.removeEventListener("keydown",this.onKeydown,!0)),this.updateMetrics(),this.emit(n?"enterFS":"exitFS")}getMatrix(t=this.current){const{a:e,b:i,c:n,d:s,e:o,f:r}=t;return new DOMMatrix([e,i,n,s,o,r])}reset(t){if(this.state!==f.Init&&this.state!==f.Destroy){this.stop("current");for(const t of m)this.target[t]=y[t];this.target.a=this.minScale,this.target.d=this.minScale,this.clampTargetBounds(),this.isResting||(this.friction=void 0===t?this.option("friction"):t,this.state=f.Panning,this.requestTick())}}destroy(){this.stop(),this.state=f.Destroy,this.detachEvents(),this.detachObserver();const{container:t,content:e}=this,i=this.option("classes")||{};for(const e of Object.values(i))t.classList.remove(e+"");e&&(e.removeEventListener("load",this.onLoad),e.removeEventListener("error",this.onError)),this.detachPlugins()}}Object.defineProperty(E,"defaults",{enumerable:!0,configurable:!0,writable:!0,value:p}),Object.defineProperty(E,"Plugins",{enumerable:!0,configurable:!0,writable:!0,value:{}}),t.Panzoom=E}));
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