scrollscene
Version:
ScrollScene is an extra layer on top of ScrollMagic as well as using IntersectionObserver to achieve similar effects.
334 lines (267 loc) • 40.7 kB
JavaScript
import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
import { errorLog, isFunc, isObject, scrollAnimationInit, createArray, isString, stringContains } from "./helpers";
var nameSpace = 'ScrollObserver';
var state = function state(visible, alreadyFired) {
this.visible = false;
this.alreadyFired = false;
};
var setClassName = function setClassName(options) {
var toggle = _objectSpread({
element: null,
className: null
}, options);
if (!toggle.element) {
errorLog(nameSpace, "Be sure to set a const toggleElement = (reactRef.current or document.querySelector) in the new ".concat(nameSpace, "({ toggle: { element: toggleElement } })"));
}
if (!toggle.className) {
errorLog(nameSpace, "Be sure to set the className you want to toggle in the new ".concat(nameSpace, "({ toggle: { className: \"my-class\" } })"));
}
this.add = function () {
!toggle.element.classList.contains(toggle.className) && toggle.element.classList.add(toggle.className);
};
this.remove = function () {
toggle.element.classList.contains(toggle.className) && toggle.element.classList.remove(toggle.className);
};
this.update = function (setState) {
if (!setState.alreadyFired && setState.visible) {
this.add();
}
if (setState.alreadyFired && !setState.visible) {
this.remove();
}
};
};
var setTween = function setTween(options) {
var gsap = _objectSpread({
timeline: null,
yoyo: false,
speed: 1,
reverseSpeed: 1,
delay: 2
}, options);
if (!gsap.timeline) {
errorLog(nameSpace, "Be sure to set a const tl = gsap.timeline({ paused: true }) in the new ".concat(nameSpace, "({ gsap: { timeline: tl } })"));
}
var tl = gsap.timeline;
if (gsap.yoyo) {
tl.repeat(-1).yoyo(gsap.yoyo).repeatDelay(gsap.delay);
}
this.play = function () {
tl.timeScale(gsap.speed).play();
};
this.pause = function () {
tl.pause();
};
this.reverse = function () {
tl.timeScale(gsap.reverseSpeed).reverse();
};
this.kill = function () {
if (tl) {
tl.pause(0);
tl.kill();
}
};
this.update = function (setState) {
if (!setState.alreadyFired && setState.visible) {
this.play();
}
if (setState.alreadyFired && !setState.visible) {
gsap.yoyo ? this.pause() : this.reverse();
}
};
this.scrub = function (intersectionRatio) {
tl.progress(intersectionRatio);
};
};
var setPlayer = function setPlayer(options) {
var video = _objectSpread({
element: null,
playingClassName: null,
pausedClassName: null
}, options);
if (!video.element) {
errorLog(nameSpace, "Be sure to set a video element in the new ".concat(nameSpace, "({ video: { element: videoRef.current } })"));
}
function handlePlay() {
if (video.element.src) {
video.element.play();
video.playingClassName && video.element.classList.add(video.playingClassName);
video.pausedClassName && video.element.classList.remove(video.pausedClassName);
}
}
function handlePause() {
if (video.element.src) {
video.element.pause();
video.pausedClassName && video.element.classList.add(video.pausedClassName);
video.playingClassName && video.element.classList.remove(video.playingClassName);
}
}
function tryPlay() {
try {
handlePlay();
} catch (error) {
handlePause();
}
}
function tryPause() {
try {
handlePause();
} catch (error) {}
}
this.play = function () {
tryPlay();
};
this.pause = function () {
tryPause();
};
this.kill = function () {
tryPause();
};
this.update = function (setState) {
if (!setState.alreadyFired && setState.visible) {
this.play();
}
if (setState.alreadyFired && !setState.visible) {
this.pause();
}
};
};
var setFunction = function setFunction(options) {
var callback = _objectSpread({
active: null,
notActive: null
}, options);
if (!callback.active && !callback.notActive) {
errorLog(nameSpace, "Be sure to set a callback active or notActive function in the new ".concat(nameSpace, "({ callback: { active: () => () } })"));
}
if (callback.active && !isFunc(callback.active) || callback.notActive && !isFunc(callback.notActive)) {
errorLog(nameSpace, "Be sure to set the callback as a function ");
}
this.update = function (setState) {
if (!setState.alreadyFired && setState.visible && callback.active) {
callback.active();
}
if (setState.alreadyFired && !setState.visible && callback.notActive) {
callback.notActive();
}
};
};
var ScrollObserver = function ScrollObserver(_ref) {
var breakpoints = _ref.breakpoints,
callback = _ref.callback,
destroyImmediately = _ref.destroyImmediately,
gsap = _ref.gsap,
observer = _ref.observer,
offset = _ref.offset,
whenVisible = _ref.whenVisible,
thresholds = _ref.thresholds,
toggle = _ref.toggle,
triggerElement = _ref.triggerElement,
useDuration = _ref.useDuration,
video = _ref.video;
if (!triggerElement) {
errorLog(nameSpace, 'Be sure to set a const triggerElement = (reactRef.current or document.querySelector) in the new ScrollScene({ triggerElement: triggerElement })');
}
var $this = this;
var setToggle;
var setGsap;
var setVideo;
var setCallback;
var ratio;
var setRootMargin = '0% 0%';
var setState = new state(false, false);
if (typeof offset === 'number') {
setRootMargin = "-".concat(Math.abs(offset), "px 0%");
} else if (typeof offset === 'string') {
setRootMargin = "-".concat(Math.abs(parseFloat(offset)), "% 0%");
}
if (toggle && isObject(toggle)) {
setToggle = new setClassName(toggle);
}
if (gsap && isObject(gsap)) {
setGsap = new setTween(gsap);
}
if (video && isObject(video)) {
setVideo = new setPlayer(video);
}
if (callback && isObject(callback)) {
setCallback = new setFunction(callback);
}
var observerCallback = function observerCallback(entries) {
entries.forEach(function (_ref2) {
var isIntersecting = _ref2.isIntersecting,
intersectionRatio = _ref2.intersectionRatio;
if (ratio) {
setState.visible = intersectionRatio >= ratio;
} else if (isIntersecting && !setState.visible) {
setState.visible = true;
} else if (!isIntersecting && setState.visible) {
setState.visible = false;
}
setToggle && setToggle.update(setState);
setGsap && (!useDuration ? setGsap.update(setState) : setGsap.scrub(intersectionRatio));
setVideo && setVideo.update(setState);
setCallback && setCallback.update(setState);
if (!setState.alreadyFired && setState.visible) {
setState.alreadyFired = true;
}
if (setState.alreadyFired && !setState.visible) {
setState.alreadyFired = false;
}
if (isIntersecting && destroyImmediately) {
$this.destroy();
}
});
};
var getPercentage = function getPercentage(value) {
if (!isString(whenVisible) && !stringContains(whenVisible, '%')) {
errorLog(nameSpace, 'Be sure to set a percentage as a string. { whenVisible: "50%" }');
}
var parsed = parseInt(value.replace('%', '')) / 100;
ratio = parsed;
return parsed;
};
var getThresolds = function getThresolds() {
var defaults = {
one: [0, 1],
gsap: createArray(199)
};
var returnedThresholds = defaults.one;
if (whenVisible) {
returnedThresholds = getPercentage(whenVisible);
}
if (useDuration) {
returnedThresholds = defaults.gsap;
}
if (thresholds) {
returnedThresholds = createArray(thresholds);
}
return returnedThresholds;
};
var Observer = new IntersectionObserver(observerCallback, _objectSpread({
threshold: getThresolds(),
rootMargin: setRootMargin
}, observer));
this.init = function () {
Observer.observe(triggerElement);
};
this.destroy = function () {
if (triggerElement && Observer) {
if (setToggle) {
setToggle.remove();
}
if (setGsap) {
setGsap.kill();
}
if (setVideo) {
setVideo.kill();
}
Observer.unobserve(triggerElement);
}
};
scrollAnimationInit(breakpoints, this.init, this.destroy);
};
export { ScrollObserver };
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{ errorLog, isFunc, isObject, scrollAnimationInit, createArray, isString, stringContains } from './helpers'\n\nconst nameSpace = 'ScrollObserver'\n\n// @ts-ignore\nconst state = function(visible, alreadyFired) {\n  this.visible = false\n  this.alreadyFired = false\n}\n\nconst setClassName = function(this: any, options) {\n  const toggle = {\n    element: null,\n    className: null,\n    ...options,\n  }\n\n  if (!toggle.element) {\n    errorLog(\n      nameSpace,\n      `Be sure to set a const toggleElement = (reactRef.current or document.querySelector) in the new ${nameSpace}({ toggle: { element: toggleElement } })`,\n    )\n  }\n\n  if (!toggle.className) {\n    errorLog(\n      nameSpace,\n      `Be sure to set the className you want to toggle in the new ${nameSpace}({ toggle: { className: \"my-class\" } })`,\n    )\n  }\n\n  this.add = function() {\n    /* add className if it's not already there */\n    !toggle.element.classList.contains(toggle.className) && toggle.element.classList.add(toggle.className)\n  }\n\n  this.remove = function() {\n    /* remove className if it's there */\n    toggle.element.classList.contains(toggle.className) && toggle.element.classList.remove(toggle.className)\n  }\n\n  this.update = function(setState) {\n    if (!setState.alreadyFired && setState.visible) {\n      this.add()\n    }\n\n    if (setState.alreadyFired && !setState.visible) {\n      this.remove()\n    }\n  }\n}\n\nconst setTween = function(this: any, options) {\n  const gsap = {\n    timeline: null,\n    yoyo: false,\n    speed: 1,\n    reverseSpeed: 1,\n    delay: 2,\n    ...options,\n  }\n\n  if (!gsap.timeline) {\n    errorLog(\n      nameSpace,\n      `Be sure to set a const tl = gsap.timeline({ paused: true }) in the new ${nameSpace}({ gsap: { timeline: tl } })`,\n    )\n  }\n\n  const tl = gsap.timeline\n\n  if (gsap.yoyo) {\n    tl.repeat(-1)\n      .yoyo(gsap.yoyo)\n      .repeatDelay(gsap.delay)\n  }\n\n  this.play = function() {\n    tl.timeScale(gsap.speed).play()\n  }\n\n  this.pause = function() {\n    tl.pause()\n  }\n\n  this.reverse = function() {\n    tl.timeScale(gsap.reverseSpeed).reverse()\n  }\n\n  this.kill = function() {\n    if (tl) {\n      tl.pause(0)\n      tl.kill()\n    }\n  }\n\n  this.update = function(setState) {\n    if (!setState.alreadyFired && setState.visible) {\n      this.play()\n    }\n\n    if (setState.alreadyFired && !setState.visible) {\n      gsap.yoyo ? this.pause() : this.reverse()\n    }\n  }\n\n  this.scrub = function(intersectionRatio) {\n    tl.progress(intersectionRatio)\n  }\n}\n\nconst setPlayer = function(this: any, options) {\n  const video = {\n    element: null,\n    playingClassName: null,\n    pausedClassName: null,\n    ...options,\n  }\n\n  if (!video.element) {\n    errorLog(\n      nameSpace,\n      `Be sure to set a video element in the new ${nameSpace}({ video: { element: videoRef.current } })`,\n    )\n  }\n\n  function handlePlay() {\n    if (video.element.src) {\n      video.element.play()\n      video.playingClassName && video.element.classList.add(video.playingClassName)\n      video.pausedClassName && video.element.classList.remove(video.pausedClassName)\n    }\n  }\n  function handlePause() {\n    if (video.element.src) {\n      video.element.pause()\n      video.pausedClassName && video.element.classList.add(video.pausedClassName)\n      video.playingClassName && video.element.classList.remove(video.playingClassName)\n    }\n  }\n\n  function tryPlay() {\n    try {\n      handlePlay()\n    } catch (error) {\n      handlePause()\n    }\n  }\n\n  function tryPause() {\n    try {\n      handlePause()\n    } catch (error) {}\n  }\n\n  this.play = function() {\n    tryPlay()\n  }\n\n  this.pause = function() {\n    tryPause()\n  }\n\n  this.kill = function() {\n    tryPause()\n  }\n\n  this.update = function(setState) {\n    if (!setState.alreadyFired && setState.visible) {\n      this.play()\n    }\n\n    if (setState.alreadyFired && !setState.visible) {\n      this.pause()\n    }\n  }\n}\n\nconst setFunction: any = function(this: any, options) {\n  const callback = {\n    active: null,\n    notActive: null,\n    ...options,\n  }\n\n  if (!callback.active && !callback.notActive) {\n    errorLog(\n      nameSpace,\n      `Be sure to set a callback active or notActive function in the new ${nameSpace}({ callback: { active: () => () } })`,\n    )\n  }\n\n  if ((callback.active && !isFunc(callback.active)) || (callback.notActive && !isFunc(callback.notActive))) {\n    errorLog(nameSpace, `Be sure to set the callback as a function `)\n  }\n\n  this.update = function(setState) {\n    if (!setState.alreadyFired && setState.visible && callback.active) {\n      callback.active()\n    }\n\n    if (setState.alreadyFired && !setState.visible && callback.notActive) {\n      callback.notActive()\n    }\n  }\n}\n\nexport interface IScrollObserverGsap {\n  /**\n   * timeline\n   * @desc Insert your gsap.timeline object var\n   * @type object\n   * @example\n   * const myTimeline = gsap.timeline()\n   * gsap: { timeline: myTimeline }\n   */\n  timeline: any\n\n  /**\n   * yoyo\n   * @desc Do you want gsap animation to loop back and forth?\n   * @type boolean\n   * @default false\n   * @example\n   * gsap: { yoyo: true }\n   */\n  yoyo?: boolean\n\n  /**\n   * speed\n   * @desc The speed at which the gsap animation will play relative to it's current speed.\n   * @type number\n   * @default 1\n   * @example\n   * gsap: { speed: 2 } // = twice as fast\n   */\n  speed?: number\n\n  /**\n   * speed\n   * @desc The speed at which the gsap animation will reverse relative to it's current speed.\n   * @type number\n   * @default 4\n   * @example\n   * gsap: { speed: 4 } // = 4x as fast\n   */\n  reverseSpeed?: number\n\n  /**\n   * delay\n   * @desc The delay (in seconds) at which the gsap animation wait before reversing.\n   * @type number\n   * @default 2\n   * @example\n   * gsap: { delay: 3 } // = Wait 3 seconds\n   */\n  delay?: number\n}\n\nexport interface IScrollObserverToggle {\n  /**\n   * className\n   * @desc Specify the className you wish to toggle.\n   * @type string\n   * @example\n   * toggle: { className: 'turn-me-blue-baby' }\n   */\n  className: string\n\n  /**\n   * element\n   * @desc Specify the element you wish to toggle the className on.\n   * @type HTMLElement | any\n   * @example\n   * toggle: { element: containerRef.current }\n   */\n  element: HTMLElement | any\n}\n\nexport interface IScrollObserverVideo {\n  /**\n   * element\n   * @desc Specify the video element you wish to interact with.\n   * @type HTMLElement | any\n   * @example\n   * video: { element: videoRef.current }\n   */\n  element: HTMLElement | any\n}\n\ninterface IScrollObserver {\n  /**\n   * breakpoints\n   * @desc Use to set responsiveness of the ScrollObserver, mobile-first\n   * @type object\n   * @example\n   * breakpoints: { 0: false, 768: true }\n   */\n  breakpoints?: object\n\n  /**\n   * callback\n   * @desc Use to set a callback when the scene is active.\n   * @type object\n   * @example\n   * callback: { active: () => (), notActive: () => () }\n   */\n  callback?: object\n\n  /**\n   * destroyImmediately\n   * @desc Use to destroy the scene immediately after firing once the element is visible.\n   * @type boolean\n   * @example\n   * destroyImmediately: true\n   */\n  destroyImmediately?: boolean\n\n  /**\n   * gsap\n   * @desc Use to set options for the gsap animation of the ScrollObserver.\n   * @type object\n   * @example\n   * gsap: { timeline: myTimeline, yoyo: true, reverseSpeed: 2 }\n   */\n  gsap?: IScrollObserverGsap\n\n  /**\n   * observer\n   * @desc Extra options to pass the IntersectionObserver, like root, rootMargin, threshold (to override the thresholds option)\n   * @type object\n   * @example\n   * observer: { rootMargin: '-50% 0%' }\n   */\n  observer?: object\n\n  /**\n   * offset\n   * @desc Change the offset. This uses rootMargin thus only works as a negative offset.\n   * @type number | string\n   * @defaultvalue '0% 0%'\n   * @example\n   * offset: 500 // this will be rootMargin: '-500px 0%'\n   */\n  offset?: number | string\n\n  /**\n   * thresholds\n   * @desc Set the number of thresholds you want.\n   * @returns An Array of number from 0 to 1. Add 1 to your number to account for 0.\n   * @type number\n   * @example\n   * thresholds: 1 = [0, 1]\n   * thresholds: 2 = [0, 0.5, 1]\n   * thresholds: 3 = [0, 0.33, 0.67, 1]\n   * thresholds: 100 = [0, 0.1, 0.2, ... 0.98, 0.99, 1]\n   */\n  thresholds?: number\n\n  /**\n   * toggle\n   * @desc Use to set the options for the toggling of a className\n   * @type object\n   * @example\n   * toggle: { element: containerRef.current, className: 'lets-do-this' }\n   */\n  toggle?: IScrollObserverToggle\n\n  /**\n   * triggerElement\n   * @desc Set the element you wish to trigger events based upon, the observed element.\n   * @type HTMLElement | any\n   * @example\n   * triggerElement: triggerRef.current\n   */\n  triggerElement: HTMLElement | any\n\n  /**\n   * useDuration\n   * @desc Use the percentage of element visibility to scrub the gsap timeline.\n   * @type boolean\n   * @example\n   * useDuration: true\n   */\n  useDuration?: boolean\n\n  /**\n   * video\n   * @desc Use to set the options for playing and pausing of the video.\n   * @type object\n   * @example\n   * video: { element: videoRef.current }\n   */\n  video?: IScrollObserverVideo\n\n  /**\n   * whenVisible\n   * @desc Set when the scene should be active based on the percentage of the element visible\n   * @type number\n   * @example\n   * whenVisible: '50%'\n   */\n  whenVisible?: string\n}\n\nconst ScrollObserver = function(\n  this: any,\n  {\n    breakpoints,\n    callback,\n    destroyImmediately,\n    gsap,\n    observer,\n    offset,\n    whenVisible,\n    thresholds,\n    toggle,\n    triggerElement,\n    useDuration,\n    video,\n  }: IScrollObserver,\n) {\n  if (!triggerElement) {\n    errorLog(\n      nameSpace,\n      'Be sure to set a const triggerElement = (reactRef.current or document.querySelector) in the new ScrollScene({ triggerElement: triggerElement })',\n    )\n  }\n\n  const $this = this\n  let setToggle\n  let setGsap\n  let setVideo\n  let setCallback\n  let ratio\n  let setRootMargin = '0% 0%'\n  let setState = new state(false, false)\n\n  if (typeof offset === 'number') {\n    // protect against positive px values, for now\n    setRootMargin = `-${Math.abs(offset)}px 0%`\n  } else if (typeof offset === 'string') {\n    // protect against positive percentage values, for now\n    setRootMargin = `-${Math.abs(parseFloat(offset))}% 0%`\n  }\n\n  if (toggle && isObject(toggle)) {\n    setToggle = new setClassName(toggle)\n  }\n\n  if (gsap && isObject(gsap)) {\n    setGsap = new setTween(gsap)\n  }\n\n  if (video && isObject(video)) {\n    setVideo = new setPlayer(video)\n  }\n\n  if (callback && isObject(callback)) {\n    setCallback = new setFunction(callback)\n  }\n\n  const observerCallback = function(entries) {\n    entries.forEach(({ isIntersecting, intersectionRatio }) => {\n      /*\n       * To help the wonkiness of IntersectionObserver, isIntersecting firing true when it's really false\n       */\n      if (ratio) {\n        setState.visible = intersectionRatio >= ratio\n      } else if (isIntersecting && !setState.visible) {\n        /*\n         * To help with setCallback and ignoring refiring extra function\n         * calls due to intersectionRatio\n         */\n        setState.visible = true\n      } else if (!isIntersecting && setState.visible) {\n        setState.visible = false\n      }\n\n      setToggle && setToggle.update(setState)\n      setGsap && (!useDuration ? setGsap.update(setState) : setGsap.scrub(intersectionRatio))\n      setVideo && setVideo.update(setState)\n      setCallback && setCallback.update(setState)\n\n      /*\n       * To help with ignoring refiring extra function\n       */\n      if (!setState.alreadyFired && setState.visible) {\n        setState.alreadyFired = true\n      }\n\n      if (setState.alreadyFired && !setState.visible) {\n        setState.alreadyFired = false\n      }\n\n      if (isIntersecting && destroyImmediately) {\n        /*\n         * destroy the scene after used once\n         */\n        $this.destroy()\n      }\n    })\n  }\n\n  const getPercentage = value => {\n    if (!isString(whenVisible) && !stringContains(whenVisible, '%')) {\n      errorLog(nameSpace, 'Be sure to set a percentage as a string. { whenVisible: \"50%\" }')\n    }\n\n    const parsed = parseInt(value.replace('%', '')) / 100\n\n    ratio = parsed\n\n    return parsed\n  }\n\n  const getThresolds = () => {\n    const defaults = {\n      one: [0, 1],\n      gsap: createArray(199),\n    }\n\n    let returnedThresholds: any = defaults.one\n\n    if (whenVisible) {\n      returnedThresholds = getPercentage(whenVisible)\n    }\n\n    if (useDuration) {\n      returnedThresholds = defaults.gsap\n    }\n\n    if (thresholds) {\n      returnedThresholds = createArray(thresholds)\n    }\n\n    return returnedThresholds\n  }\n\n  const Observer = new IntersectionObserver(observerCallback, {\n    threshold: getThresolds(),\n    rootMargin: setRootMargin,\n    ...observer,\n  })\n\n  this.init = function() {\n    Observer.observe(triggerElement)\n  }\n\n  this.destroy = function() {\n    if (triggerElement && Observer) {\n      if (setToggle) {\n        setToggle.remove()\n      }\n\n      if (setGsap) {\n        setGsap.kill()\n      }\n\n      if (setVideo) {\n        setVideo.kill()\n      }\n\n      Observer.unobserve(triggerElement)\n    }\n  }\n\n  scrollAnimationInit(breakpoints, this.init, this.destroy)\n}\n\nexport { ScrollObserver }\n"]}