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{ ResizeObserver as Polyfill } from '@juggle/resize-observer';\r\nconst ResizeObserver = window.ResizeObserver || Polyfill;\r\nimport Cookies from 'js-cookie';\r\n\r\nconst randomBetween = (min, max, round) => {\r\n    var num = Math.random() * (max - min + 1) + min;\r\n    return round ? Math.floor(num) : num;\r\n};\r\n\r\nlet windowWidth = 0,\r\n    windowHeight = 0,\r\n    s = null;\r\n\r\nclass SnowOverlay {\r\n    constructor(el) {\r\n        // set up canvas\r\n        this.canvas = el;\r\n        this.ctx = this.canvas.getContext('2d');\r\n        this.spacing = 75;\r\n        this.flakes = [];\r\n        this.resizeRequested = false;\r\n        // check window size\r\n        windowWidth = 0;\r\n        windowHeight = 0;\r\n        this.resize(false);\r\n        this.seedWidth = windowWidth;\r\n        this.seedHeight = windowHeight;\r\n        // add flakes\r\n        for(let fY = this.spacing; fY < windowHeight; fY += this.spacing) {\r\n            for(let fX = this.spacing; fX < windowWidth; fX += this.spacing) {\r\n                this.flakes.push(new Flake(fX, fY, this.spacing));\r\n            }\r\n        }\r\n        // update canvas\r\n        window.requestAnimationFrame(() => {\r\n            this.redraw();\r\n        });\r\n        // resize listener\r\n        window.addEventListener('vpResize', () => {\r\n            if(s != null) {\r\n                if(!this.resizeRequested) {\r\n                    this.resizeRequested = true;\r\n                    window.requestAnimationFrame(() => {\r\n                        this.resize(true);\r\n                    });\r\n                }\r\n            }\r\n        }, false);\r\n    }\r\n\r\n    resize(addFlakes = false) {\r\n        let prevWidth = windowWidth,\r\n            prevHeight = windowHeight;\r\n        windowWidth = this.canvas.offsetWidth;\r\n        windowHeight = this.canvas.offsetHeight;\r\n        console.log(windowWidth + \" : \" + windowHeight);\r\n        if(prevWidth != windowWidth || prevHeight != windowHeight) {\r\n            this.canvas.width = windowWidth;\r\n            this.canvas.height = windowHeight;\r\n            if(addFlakes && (windowWidth - this.seedWidth) > this.spacing) {\r\n                // add extra flakes for width\r\n                for(let fY = this.spacing; fY < prevHeight; fY += this.spacing) {\r\n                    for(let fX = prevWidth; fX < windowWidth; fX += this.spacing) {\r\n                        this.flakes.push(new Flake(fX, fY, this.spacing));\r\n                    }\r\n                }\r\n                this.seedWidth = windowWidth;\r\n            }\r\n            if(addFlakes && (windowHeight - this.seedHeight) > this.spacing) {\r\n                // add extra flakes for height\r\n                for(let fY = prevHeight; fY < windowHeight; fY += this.spacing) {\r\n                    for(let fX = this.spacing; fX < windowWidth; fX += this.spacing) {\r\n                        this.flakes.push(new Flake(fX, fY, this.spacing));\r\n                    }\r\n                }\r\n                this.seedHeight = windowHeight;\r\n            }\r\n        }\r\n        this.resizeRequested = false;\r\n    }\r\n    \r\n    redraw() {\r\n        // clear canvas\r\n        this.ctx.clearRect(0, 0, windowWidth, windowHeight);\r\n        this.ctx.setTransform(1, 0, 0, 1, 0, 0);\r\n        // loop through flakes\r\n        for(let i=0; i < this.flakes.length; i++) {\r\n            let f = this.flakes[i];\r\n            f.update();\r\n            // draw on canvas\r\n            this.ctx.beginPath();\r\n            this.ctx.arc(f.x, f.y, f.weight, 0, 2 * Math.PI, false);\r\n            this.ctx.fillStyle = 'rgba(255, 255, 255, ' + f.alpha + ')';\r\n            this.ctx.fill();\r\n        }\r\n        // call next redraw\r\n        window.requestAnimationFrame(() => {\r\n            this.redraw();\r\n        });\r\n    }\r\n}\r\n\r\nclass Flake {\r\n    constructor(getX, getY, getSpacing) {\r\n        const maxWeight = 5,\r\n            maxSpeed = 2;\r\n        this.spacing = getSpacing;\r\n        this.x = getX + randomBetween(-this.spacing, this.spacing, true);\r\n        this.y = getY + randomBetween(-this.spacing, this.spacing, true);\r\n        this.r = randomBetween(0, 1);\r\n        this.a = randomBetween(0, Math.PI);\r\n        this.aStep = 0.01;\r\n        this.weight = randomBetween(2, maxWeight);\r\n        this.size = 2.5 * this.weight;\r\n        this.alpha = (this.weight / maxWeight);\r\n        this.speed = (this.weight / maxWeight) * maxSpeed;\r\n    }\r\n    update() {\r\n        this.x += Math.cos(this.a) * this.r;\r\n        this.a += this.aStep;\r\n        this.y += this.speed;\r\n        if(this.y > windowHeight) this.y = -10;\r\n    }\r\n}\r\n\r\n// set things up\r\n\r\nconst toggle = document.querySelector('#snow-fx-toggle');\r\n\r\nlet detectReducedMotionPref = window.matchMedia('(prefers-reduced-motion: reduce)');\r\nif(detectReducedMotionPref.matches) {\r\n    // remove toggle\r\n    toggle.parentNode.removeChild(toggle);\r\n} else {\r\n\r\n    let snowActive = false;\r\n\r\n    // check for cookie setting\r\n    if(Cookies.get('dclt-disable-snow-fx')) {\r\n        toggle.checked = false;\r\n        toggle.removeAttribute('checked');\r\n    }\r\n\r\n    const toggleSnow = (mode) => {\r\n        if(mode) {\r\n            // start snow\r\n            snowActive = true;\r\n            let snow = document.createElement('canvas');\r\n            snow.setAttribute('id','snow-overlay');\r\n            snow.setAttribute('aria-hidden','true');\r\n            document.body.appendChild(snow);\r\n            s = new SnowOverlay(document.querySelector('#snow-overlay'));\r\n        } else {\r\n            // stop snow\r\n            snowActive = false;\r\n            let snow = document.querySelector('#snow-overlay');\r\n            document.body.removeChild(snow);\r\n            s = null;\r\n        }\r\n    }\r\n\r\n    // check toggle state\r\n    if(toggle.checked) toggleSnow(true);\r\n\r\n    // add toggle behaviours\r\n    toggle.onclick = () => {\r\n        if(toggle.checked) {\r\n            Cookies.remove('dclt-disable-snow-fx');\r\n            if(!snowActive) {\r\n                toggleSnow(true);\r\n            }\r\n        } else {\r\n            Cookies.set('dclt-disable-snow-fx', 'value', { expires: 7 }); // store choice for a week\r\n            if(snowActive) {\r\n                toggleSnow(false);\r\n            }\r\n        }\r\n    }\r\n\r\n}","/*! js-cookie v3.0.1 | MIT */\n/* eslint-disable no-var */\nfunction assign (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];\n    for (var key in source) {\n      target[key] = source[key];\n    }\n  }\n  return target\n}\n/* eslint-enable no-var */\n\n/* eslint-disable no-var */\nvar defaultConverter = {\n  read: function (value) {\n    if (value[0] === '\"') {\n      value = value.slice(1, -1);\n    }\n    return value.replace(/(%[\\dA-F]{2})+/gi, decodeURIComponent)\n  },\n  write: function (value) {\n    return encodeURIComponent(value).replace(\n      /%(2[346BF]|3[AC-F]|40|5[BDE]|60|7[BCD])/g,\n      decodeURIComponent\n    )\n  }\n};\n/* eslint-enable no-var */\n\n/* eslint-disable no-var */\n\nfunction init (converter, defaultAttributes) {\n  function set (key, value, attributes) {\n    if (typeof document === 'undefined') {\n      return\n    }\n\n    attributes = assign({}, defaultAttributes, attributes);\n\n    if (typeof attributes.expires === 'number') {\n      attributes.expires = new Date(Date.now() + attributes.expires * 864e5);\n    }\n    if (attributes.expires) {\n      attributes.expires = attributes.expires.toUTCString();\n    }\n\n    key = encodeURIComponent(key)\n      .replace(/%(2[346B]|5E|60|7C)/g, decodeURIComponent)\n      .replace(/[()]/g, escape);\n\n    var stringifiedAttributes = '';\n    for (var attributeName in attributes) {\n      if (!attributes[attributeName]) {\n        continue\n      }\n\n      stringifiedAttributes += '; ' + attributeName;\n\n      if (attributes[attributeName] === true) {\n        continue\n      }\n\n      // Considers RFC 6265 section 5.2:\n      // ...\n      // 3.  If the remaining unparsed-attributes contains a %x3B (\";\")\n      //     character:\n      // Consume the characters of the unparsed-attributes up to,\n      // not including, the first %x3B (\";\") character.\n      // ...\n      stringifiedAttributes += '=' + attributes[attributeName].split(';')[0];\n    }\n\n    return (document.cookie =\n      key + '=' + converter.write(value, key) + stringifiedAttributes)\n  }\n\n  function get (key) {\n    if (typeof document === 'undefined' || (arguments.length && !key)) {\n      return\n    }\n\n    // To prevent the for loop in the first place assign an empty array\n    // in case there are no cookies at all.\n    var cookies = document.cookie ? document.cookie.split('; ') : [];\n    var jar = {};\n    for (var i = 0; i < cookies.length; i++) {\n      var parts = cookies[i].split('=');\n      var value = parts.slice(1).join('=');\n\n      try {\n        var foundKey = decodeURIComponent(parts[0]);\n        jar[foundKey] = converter.read(value, foundKey);\n\n        if (key === foundKey) {\n          break\n        }\n      } catch (e) {}\n    }\n\n    return key ? jar[key] : jar\n  }\n\n  return Object.create(\n    {\n      set: set,\n      get: get,\n      remove: function (key, attributes) {\n        set(\n          key,\n          '',\n          assign({}, attributes, {\n            expires: -1\n          })\n        );\n      },\n      withAttributes: function (attributes) {\n        return init(this.converter, assign({}, this.attributes, attributes))\n      },\n      withConverter: function (converter) {\n        return init(assign({}, this.converter, converter), this.attributes)\n      }\n    },\n    {\n      attributes: { value: Object.freeze(defaultAttributes) },\n      converter: { value: Object.freeze(converter) }\n    }\n  )\n}\n\nvar api = init(defaultConverter, { path: '/' });\n/* eslint-enable no-var */\n\nexport default api;\n"],"names":["window","ResizeObserver","Polyfill","randomBetween","min","max","round","num","Math","random","floor","windowWidth","windowHeight","s","SnowOverlay","constructor","el","this","canvas","ctx","getContext","spacing","flakes","resizeRequested","resize","seedWidth","seedHeight","fY","fX","push","Flake","requestAnimationFrame","redraw","addEventListener","addFlakes","prevWidth","prevHeight","offsetWidth","offsetHeight","console","log","width","height","clearRect","setTransform","i","length","f","update","beginPath","arc","x","y","weight","PI","fillStyle","alpha","fill","getX","getY","getSpacing","r","a","aStep","size","speed","cos","toggle","document","querySelector","matchMedia","matches","parentNode","removeChild","snowActive","Cookies","checked","removeAttribute","toggleSnow","mode","snow","createElement","setAttribute","body","appendChild","onclick","expires","assign","target","arguments","source","key","api","init","converter","defaultAttributes","set","value","attributes","Date","now","toUTCString","encodeURIComponent","replace","decodeURIComponent","escape","stringifiedAttributes","attributeName","split","cookie","write","Object","create","get","cookies","jar","parts","slice","join","foundKey","read","e","remove","withAttributes","withConverter","freeze","path"],"sourceRoot":""}