{"version":3,"file":"jarallax.min.js","sources":["../src/utils/ready.js","../src/utils/global.js","../src/core.js","../src/core.umd.js"],"sourcesContent":["function ready(callback) {\n  if ('complete' === document.readyState || 'interactive' === document.readyState) {\n    // Already ready or interactive, execute callback\n    callback();\n  } else {\n    document.addEventListener('DOMContentLoaded', callback, {\n      capture: true,\n      once: true,\n      passive: true,\n    });\n  }\n}\n\nexport default ready;\n","/* eslint-disable import/no-mutable-exports */\n/* eslint-disable no-restricted-globals */\nlet win;\n\nif ('undefined' !== typeof window) {\n  win = window;\n} else if ('undefined' !== typeof global) {\n  win = global;\n} else if ('undefined' !== typeof self) {\n  win = self;\n} else {\n  win = {};\n}\n\nexport default win;\n","import domReady from './utils/ready';\nimport global from './utils/global';\n\nconst { navigator } = global;\n\nconst isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(\n  navigator.userAgent\n);\n\nlet $deviceHelper;\n\n/**\n * The most popular mobile browsers changes height after page scroll and this generates image jumping.\n * We can fix it using this workaround with vh units.\n */\nfunction getDeviceHeight() {\n  if (!$deviceHelper && document.body) {\n    $deviceHelper = document.createElement('div');\n    $deviceHelper.style.cssText =\n      'position: fixed; top: -9999px; left: 0; height: 100vh; width: 0;';\n    document.body.appendChild($deviceHelper);\n  }\n\n  return (\n    ($deviceHelper ? $deviceHelper.clientHeight : 0) ||\n    global.innerHeight ||\n    document.documentElement.clientHeight\n  );\n}\n\n// Window height data\nlet wndH;\nfunction updateWndVars() {\n  if (isMobile) {\n    wndH = getDeviceHeight();\n  } else {\n    wndH = global.innerHeight || document.documentElement.clientHeight;\n  }\n}\nupdateWndVars();\nglobal.addEventListener('resize', updateWndVars);\nglobal.addEventListener('orientationchange', updateWndVars);\nglobal.addEventListener('load', updateWndVars);\ndomReady(() => {\n  updateWndVars({\n    type: 'dom-loaded',\n  });\n});\n\n// list with all jarallax instances\n// need to render all in one scroll/resize event\nconst jarallaxList = [];\n\n// get all parents of the element.\nfunction getParents(elem) {\n  const parents = [];\n\n  while (null !== elem.parentElement) {\n    elem = elem.parentElement;\n\n    if (1 === elem.nodeType) {\n      parents.push(elem);\n    }\n  }\n\n  return parents;\n}\n\nfunction updateParallax() {\n  if (!jarallaxList.length) {\n    return;\n  }\n\n  jarallaxList.forEach((data, k) => {\n    const { instance, oldData } = data;\n\n    const clientRect = instance.$item.getBoundingClientRect();\n\n    const newData = {\n      width: clientRect.width,\n      height: clientRect.height,\n      top: clientRect.top,\n      bottom: clientRect.bottom,\n      wndW: global.innerWidth,\n      wndH,\n    };\n\n    const isResized =\n      !oldData ||\n      oldData.wndW !== newData.wndW ||\n      oldData.wndH !== newData.wndH ||\n      oldData.width !== newData.width ||\n      oldData.height !== newData.height;\n    const isScrolled =\n      isResized || !oldData || oldData.top !== newData.top || oldData.bottom !== newData.bottom;\n\n    jarallaxList[k].oldData = newData;\n\n    if (isResized) {\n      instance.onResize();\n    }\n    if (isScrolled) {\n      instance.onScroll();\n    }\n  });\n\n  global.requestAnimationFrame(updateParallax);\n}\n\nlet instanceID = 0;\n\n// Jarallax class\nclass Jarallax {\n  constructor(item, userOptions) {\n    const self = this;\n\n    self.instanceID = instanceID;\n    instanceID += 1;\n\n    self.$item = item;\n\n    self.defaults = {\n      type: 'scroll', // type of parallax: scroll, scale, opacity, scale-opacity, scroll-opacity\n      speed: 0.5, // supported value from -1 to 2\n      imgSrc: null,\n      imgElement: '.jarallax-img',\n      imgSize: 'cover',\n      imgPosition: '50% 50%',\n      imgRepeat: 'no-repeat', // supported only for background, not for <img> tag\n      keepImg: false, // keep <img> tag in it's default place\n      elementInViewport: null,\n      zIndex: -100,\n      disableParallax: false,\n      disableVideo: false,\n\n      // video\n      videoSrc: null,\n      videoStartTime: 0,\n      videoEndTime: 0,\n      videoVolume: 0,\n      videoLoop: true,\n      videoPlayOnlyVisible: true,\n      videoLazyLoading: true,\n\n      // events\n      onScroll: null, // function(calculations) {}\n      onInit: null, // function() {}\n      onDestroy: null, // function() {}\n      onCoverImage: null, // function() {}\n    };\n\n    // prepare data-options\n    const dataOptions = self.$item.dataset || {};\n    const pureDataOptions = {};\n    Object.keys(dataOptions).forEach((key) => {\n      const loweCaseOption = key.substr(0, 1).toLowerCase() + key.substr(1);\n      if (loweCaseOption && 'undefined' !== typeof self.defaults[loweCaseOption]) {\n        pureDataOptions[loweCaseOption] = dataOptions[key];\n      }\n    });\n\n    self.options = self.extend({}, self.defaults, pureDataOptions, userOptions);\n    self.pureOptions = self.extend({}, self.options);\n\n    // prepare 'true' and 'false' strings to boolean\n    Object.keys(self.options).forEach((key) => {\n      if ('true' === self.options[key]) {\n        self.options[key] = true;\n      } else if ('false' === self.options[key]) {\n        self.options[key] = false;\n      }\n    });\n\n    // fix speed option [-1.0, 2.0]\n    self.options.speed = Math.min(2, Math.max(-1, parseFloat(self.options.speed)));\n\n    // prepare disableParallax callback\n    if ('string' === typeof self.options.disableParallax) {\n      self.options.disableParallax = new RegExp(self.options.disableParallax);\n    }\n    if (self.options.disableParallax instanceof RegExp) {\n      const disableParallaxRegexp = self.options.disableParallax;\n      self.options.disableParallax = () => disableParallaxRegexp.test(navigator.userAgent);\n    }\n    if ('function' !== typeof self.options.disableParallax) {\n      self.options.disableParallax = () => false;\n    }\n\n    // prepare disableVideo callback\n    if ('string' === typeof self.options.disableVideo) {\n      self.options.disableVideo = new RegExp(self.options.disableVideo);\n    }\n    if (self.options.disableVideo instanceof RegExp) {\n      const disableVideoRegexp = self.options.disableVideo;\n      self.options.disableVideo = () => disableVideoRegexp.test(navigator.userAgent);\n    }\n    if ('function' !== typeof self.options.disableVideo) {\n      self.options.disableVideo = () => false;\n    }\n\n    // custom element to check if parallax in viewport\n    let elementInVP = self.options.elementInViewport;\n    // get first item from array\n    if (\n      elementInVP &&\n      'object' === typeof elementInVP &&\n      'undefined' !== typeof elementInVP.length\n    ) {\n      [elementInVP] = elementInVP;\n    }\n    // check if dom element\n    if (!(elementInVP instanceof Element)) {\n      elementInVP = null;\n    }\n    self.options.elementInViewport = elementInVP;\n\n    self.image = {\n      src: self.options.imgSrc || null,\n      $container: null,\n      useImgTag: false,\n\n      // 1. Position fixed is needed for the most of browsers because absolute position have glitches\n      // 2. On MacOS with smooth scroll there is a huge lags with absolute position - https://github.com/nk-o/jarallax/issues/75\n      // 3. Previously used 'absolute' for mobile devices. But we re-tested on iPhone 12 and 'fixed' position is working better, then 'absolute', so for now position is always 'fixed'\n      position: 'fixed',\n    };\n\n    if (self.initImg() && self.canInitParallax()) {\n      self.init();\n    }\n  }\n\n  // add styles to element\n  // eslint-disable-next-line class-methods-use-this\n  css(el, styles) {\n    if ('string' === typeof styles) {\n      return global.getComputedStyle(el).getPropertyValue(styles);\n    }\n\n    Object.keys(styles).forEach((key) => {\n      el.style[key] = styles[key];\n    });\n    return el;\n  }\n\n  // Extend like jQuery.extend\n  // eslint-disable-next-line class-methods-use-this\n  extend(out, ...args) {\n    out = out || {};\n\n    Object.keys(args).forEach((i) => {\n      if (!args[i]) {\n        return;\n      }\n      Object.keys(args[i]).forEach((key) => {\n        out[key] = args[i][key];\n      });\n    });\n\n    return out;\n  }\n\n  // get window size and scroll position. Useful for extensions\n  // eslint-disable-next-line class-methods-use-this\n  getWindowData() {\n    return {\n      width: global.innerWidth || document.documentElement.clientWidth,\n      height: wndH,\n      y: document.documentElement.scrollTop,\n    };\n  }\n\n  // Jarallax functions\n  initImg() {\n    const self = this;\n\n    // find image element\n    let $imgElement = self.options.imgElement;\n    if ($imgElement && 'string' === typeof $imgElement) {\n      $imgElement = self.$item.querySelector($imgElement);\n    }\n\n    // check if dom element\n    if (!($imgElement instanceof Element)) {\n      if (self.options.imgSrc) {\n        $imgElement = new Image();\n        $imgElement.src = self.options.imgSrc;\n      } else {\n        $imgElement = null;\n      }\n    }\n\n    if ($imgElement) {\n      if (self.options.keepImg) {\n        self.image.$item = $imgElement.cloneNode(true);\n      } else {\n        self.image.$item = $imgElement;\n        self.image.$itemParent = $imgElement.parentNode;\n      }\n      self.image.useImgTag = true;\n    }\n\n    // true if there is img tag\n    if (self.image.$item) {\n      return true;\n    }\n\n    // get image src\n    if (null === self.image.src) {\n      self.image.src =\n        'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7';\n      self.image.bgImage = self.css(self.$item, 'background-image');\n    }\n    return !(!self.image.bgImage || 'none' === self.image.bgImage);\n  }\n\n  canInitParallax() {\n    return !this.options.disableParallax();\n  }\n\n  init() {\n    const self = this;\n    const containerStyles = {\n      position: 'absolute',\n      top: 0,\n      left: 0,\n      width: '100%',\n      height: '100%',\n      overflow: 'hidden',\n    };\n    let imageStyles = {\n      pointerEvents: 'none',\n      transformStyle: 'preserve-3d',\n      backfaceVisibility: 'hidden',\n      willChange: 'transform,opacity',\n    };\n\n    if (!self.options.keepImg) {\n      // save default user styles\n      const curStyle = self.$item.getAttribute('style');\n      if (curStyle) {\n        self.$item.setAttribute('data-jarallax-original-styles', curStyle);\n      }\n      if (self.image.useImgTag) {\n        const curImgStyle = self.image.$item.getAttribute('style');\n        if (curImgStyle) {\n          self.image.$item.setAttribute('data-jarallax-original-styles', curImgStyle);\n        }\n      }\n    }\n\n    // set relative position and z-index to the parent\n    if ('static' === self.css(self.$item, 'position')) {\n      self.css(self.$item, {\n        position: 'relative',\n      });\n    }\n    if ('auto' === self.css(self.$item, 'z-index')) {\n      self.css(self.$item, {\n        zIndex: 0,\n      });\n    }\n\n    // container for parallax image\n    self.image.$container = document.createElement('div');\n    self.css(self.image.$container, containerStyles);\n    self.css(self.image.$container, {\n      'z-index': self.options.zIndex,\n    });\n\n    // it will remove some image overlapping\n    // overlapping occur due to an image position fixed inside absolute position element\n    // needed only when background in fixed position\n    if ('fixed' === this.image.position) {\n      self.css(self.image.$container, {\n        '-webkit-clip-path': 'polygon(0 0, 100% 0, 100% 100%, 0 100%)',\n        'clip-path': 'polygon(0 0, 100% 0, 100% 100%, 0 100%)',\n      });\n    }\n\n    self.image.$container.setAttribute('id', `jarallax-container-${self.instanceID}`);\n    self.$item.appendChild(self.image.$container);\n\n    // use img tag\n    if (self.image.useImgTag) {\n      imageStyles = self.extend(\n        {\n          'object-fit': self.options.imgSize,\n          'object-position': self.options.imgPosition,\n          'max-width': 'none',\n        },\n        containerStyles,\n        imageStyles\n      );\n\n      // use div with background image\n    } else {\n      self.image.$item = document.createElement('div');\n      if (self.image.src) {\n        imageStyles = self.extend(\n          {\n            'background-position': self.options.imgPosition,\n            'background-size': self.options.imgSize,\n            'background-repeat': self.options.imgRepeat,\n            'background-image': self.image.bgImage || `url(\"${self.image.src}\")`,\n          },\n          containerStyles,\n          imageStyles\n        );\n      }\n    }\n\n    if (\n      'opacity' === self.options.type ||\n      'scale' === self.options.type ||\n      'scale-opacity' === self.options.type ||\n      1 === self.options.speed\n    ) {\n      self.image.position = 'absolute';\n    }\n\n    // 1. Check if one of parents have transform style (without this check, scroll transform will be inverted if used parallax with position fixed)\n    //    discussion - https://github.com/nk-o/jarallax/issues/9\n    // 2. Check if parents have overflow scroll\n    if ('fixed' === self.image.position) {\n      const $parents = getParents(self.$item).filter((el) => {\n        const styles = global.getComputedStyle(el);\n        const parentTransform =\n          styles['-webkit-transform'] || styles['-moz-transform'] || styles.transform;\n        const overflowRegex = /(auto|scroll)/;\n\n        return (\n          (parentTransform && 'none' !== parentTransform) ||\n          overflowRegex.test(styles.overflow + styles['overflow-y'] + styles['overflow-x'])\n        );\n      });\n\n      self.image.position = $parents.length ? 'absolute' : 'fixed';\n    }\n\n    // add position to parallax block\n    imageStyles.position = self.image.position;\n\n    // insert parallax image\n    self.css(self.image.$item, imageStyles);\n    self.image.$container.appendChild(self.image.$item);\n\n    // set initial position and size\n    self.onResize();\n    self.onScroll(true);\n\n    // call onInit event\n    if (self.options.onInit) {\n      self.options.onInit.call(self);\n    }\n\n    // remove default user background\n    if ('none' !== self.css(self.$item, 'background-image')) {\n      self.css(self.$item, {\n        'background-image': 'none',\n      });\n    }\n\n    self.addToParallaxList();\n  }\n\n  // add to parallax instances list\n  addToParallaxList() {\n    jarallaxList.push({\n      instance: this,\n    });\n\n    if (1 === jarallaxList.length) {\n      global.requestAnimationFrame(updateParallax);\n    }\n  }\n\n  // remove from parallax instances list\n  removeFromParallaxList() {\n    const self = this;\n\n    jarallaxList.forEach((data, key) => {\n      if (data.instance.instanceID === self.instanceID) {\n        jarallaxList.splice(key, 1);\n      }\n    });\n  }\n\n  destroy() {\n    const self = this;\n\n    self.removeFromParallaxList();\n\n    // return styles on container as before jarallax init\n    const originalStylesTag = self.$item.getAttribute('data-jarallax-original-styles');\n    self.$item.removeAttribute('data-jarallax-original-styles');\n    // null occurs if there is no style tag before jarallax init\n    if (!originalStylesTag) {\n      self.$item.removeAttribute('style');\n    } else {\n      self.$item.setAttribute('style', originalStylesTag);\n    }\n\n    if (self.image.useImgTag) {\n      // return styles on img tag as before jarallax init\n      const originalStylesImgTag = self.image.$item.getAttribute('data-jarallax-original-styles');\n      self.image.$item.removeAttribute('data-jarallax-original-styles');\n      // null occurs if there is no style tag before jarallax init\n      if (!originalStylesImgTag) {\n        self.image.$item.removeAttribute('style');\n      } else {\n        self.image.$item.setAttribute('style', originalStylesTag);\n      }\n\n      // move img tag to its default position\n      if (self.image.$itemParent) {\n        self.image.$itemParent.appendChild(self.image.$item);\n      }\n    }\n\n    // remove additional dom elements\n    if (self.image.$container) {\n      self.image.$container.parentNode.removeChild(self.image.$container);\n    }\n\n    // call onDestroy event\n    if (self.options.onDestroy) {\n      self.options.onDestroy.call(self);\n    }\n\n    // delete jarallax from item\n    delete self.$item.jarallax;\n  }\n\n  // Fallback for removed function.\n  // Does nothing now.\n  // eslint-disable-next-line class-methods-use-this\n  clipContainer() {}\n\n  coverImage() {\n    const self = this;\n\n    const rect = self.image.$container.getBoundingClientRect();\n    const contH = rect.height;\n    const { speed } = self.options;\n    const isScroll = 'scroll' === self.options.type || 'scroll-opacity' === self.options.type;\n    let scrollDist = 0;\n    let resultH = contH;\n    let resultMT = 0;\n\n    // scroll parallax\n    if (isScroll) {\n      // scroll distance and height for image\n      if (0 > speed) {\n        scrollDist = speed * Math.max(contH, wndH);\n\n        if (wndH < contH) {\n          scrollDist -= speed * (contH - wndH);\n        }\n      } else {\n        scrollDist = speed * (contH + wndH);\n      }\n\n      // size for scroll parallax\n      if (1 < speed) {\n        resultH = Math.abs(scrollDist - wndH);\n      } else if (0 > speed) {\n        resultH = scrollDist / speed + Math.abs(scrollDist);\n      } else {\n        resultH += (wndH - contH) * (1 - speed);\n      }\n\n      scrollDist /= 2;\n    }\n\n    // store scroll distance\n    self.parallaxScrollDistance = scrollDist;\n\n    // vertical center\n    if (isScroll) {\n      resultMT = (wndH - resultH) / 2;\n    } else {\n      resultMT = (contH - resultH) / 2;\n    }\n\n    // apply result to item\n    self.css(self.image.$item, {\n      height: `${resultH}px`,\n      marginTop: `${resultMT}px`,\n      left: 'fixed' === self.image.position ? `${rect.left}px` : '0',\n      width: `${rect.width}px`,\n    });\n\n    // call onCoverImage event\n    if (self.options.onCoverImage) {\n      self.options.onCoverImage.call(self);\n    }\n\n    // return some useful data. Used in the video cover function\n    return {\n      image: {\n        height: resultH,\n        marginTop: resultMT,\n      },\n      container: rect,\n    };\n  }\n\n  isVisible() {\n    return this.isElementInViewport || false;\n  }\n\n  onScroll(force) {\n    const self = this;\n\n    const rect = self.$item.getBoundingClientRect();\n    const contT = rect.top;\n    const contH = rect.height;\n    const styles = {};\n\n    // check if in viewport\n    let viewportRect = rect;\n    if (self.options.elementInViewport) {\n      viewportRect = self.options.elementInViewport.getBoundingClientRect();\n    }\n    self.isElementInViewport =\n      0 <= viewportRect.bottom &&\n      0 <= viewportRect.right &&\n      viewportRect.top <= wndH &&\n      viewportRect.left <= global.innerWidth;\n\n    // stop calculations if item is not in viewport\n    if (force ? false : !self.isElementInViewport) {\n      return;\n    }\n\n    // calculate parallax helping variables\n    const beforeTop = Math.max(0, contT);\n    const beforeTopEnd = Math.max(0, contH + contT);\n    const afterTop = Math.max(0, -contT);\n    const beforeBottom = Math.max(0, contT + contH - wndH);\n    const beforeBottomEnd = Math.max(0, contH - (contT + contH - wndH));\n    const afterBottom = Math.max(0, -contT + wndH - contH);\n    const fromViewportCenter = 1 - 2 * ((wndH - contT) / (wndH + contH));\n\n    // calculate on how percent of section is visible\n    let visiblePercent = 1;\n    if (contH < wndH) {\n      visiblePercent = 1 - (afterTop || beforeBottom) / contH;\n    } else if (beforeTopEnd <= wndH) {\n      visiblePercent = beforeTopEnd / wndH;\n    } else if (beforeBottomEnd <= wndH) {\n      visiblePercent = beforeBottomEnd / wndH;\n    }\n\n    // opacity\n    if (\n      'opacity' === self.options.type ||\n      'scale-opacity' === self.options.type ||\n      'scroll-opacity' === self.options.type\n    ) {\n      styles.transform = 'translate3d(0,0,0)';\n      styles.opacity = visiblePercent;\n    }\n\n    // scale\n    if ('scale' === self.options.type || 'scale-opacity' === self.options.type) {\n      let scale = 1;\n      if (0 > self.options.speed) {\n        scale -= self.options.speed * visiblePercent;\n      } else {\n        scale += self.options.speed * (1 - visiblePercent);\n      }\n      styles.transform = `scale(${scale}) translate3d(0,0,0)`;\n    }\n\n    // scroll\n    if ('scroll' === self.options.type || 'scroll-opacity' === self.options.type) {\n      let positionY = self.parallaxScrollDistance * fromViewportCenter;\n\n      // fix if parallax block in absolute position\n      if ('absolute' === self.image.position) {\n        positionY -= contT;\n      }\n\n      styles.transform = `translate3d(0,${positionY}px,0)`;\n    }\n\n    self.css(self.image.$item, styles);\n\n    // call onScroll event\n    if (self.options.onScroll) {\n      self.options.onScroll.call(self, {\n        section: rect,\n\n        beforeTop,\n        beforeTopEnd,\n        afterTop,\n        beforeBottom,\n        beforeBottomEnd,\n        afterBottom,\n\n        visiblePercent,\n        fromViewportCenter,\n      });\n    }\n  }\n\n  onResize() {\n    this.coverImage();\n  }\n}\n\n// global definition\nconst jarallax = function (items, options, ...args) {\n  // check for dom element\n  // thanks: http://stackoverflow.com/questions/384286/javascript-isdom-how-do-you-check-if-a-javascript-object-is-a-dom-object\n  if (\n    'object' === typeof HTMLElement\n      ? items instanceof HTMLElement\n      : items &&\n        'object' === typeof items &&\n        null !== items &&\n        1 === items.nodeType &&\n        'string' === typeof items.nodeName\n  ) {\n    items = [items];\n  }\n\n  const len = items.length;\n  let k = 0;\n  let ret;\n\n  for (k; k < len; k += 1) {\n    if ('object' === typeof options || 'undefined' === typeof options) {\n      if (!items[k].jarallax) {\n        items[k].jarallax = new Jarallax(items[k], options);\n      }\n    } else if (items[k].jarallax) {\n      // eslint-disable-next-line prefer-spread\n      ret = items[k].jarallax[options].apply(items[k].jarallax, args);\n    }\n    if ('undefined' !== typeof ret) {\n      return ret;\n    }\n  }\n\n  return items;\n};\njarallax.constructor = Jarallax;\n\nexport default jarallax;\n","import domReady from './utils/ready';\nimport global from './utils/global';\nimport jarallax from './core';\n\nconst $ = global.jQuery;\n\n// jQuery support\nif ('undefined' !== typeof $) {\n  const $Plugin = function (...args) {\n    Array.prototype.unshift.call(args, this);\n    const res = jarallax.apply(global, args);\n    return 'object' !== typeof res ? res : this;\n  };\n  $Plugin.constructor = jarallax.constructor;\n\n  // no conflict\n  const old$Plugin = $.fn.jarallax;\n  $.fn.jarallax = $Plugin;\n  $.fn.jarallax.noConflict = function () {\n    $.fn.jarallax = old$Plugin;\n    return this;\n  };\n}\n\n// data-jarallax initialization\ndomReady(() => {\n  jarallax(document.querySelectorAll('[data-jarallax]'));\n});\n\nexport default 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