react-moveable-ticker
Version:
A lightweight, fast and speed-adjustable Ticker-Component fro React.
80 lines (79 loc) • 4.5 kB
JavaScript
;
function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
require("core-js/modules/es.array.iterator.js");
require("core-js/modules/es.object.to-string.js");
require("core-js/modules/es.string.iterator.js");
require("core-js/modules/es.weak-map.js");
require("core-js/modules/web.dom-collections.iterator.js");
require("core-js/modules/es.object.get-own-property-descriptor.js");
require("core-js/modules/es.symbol.js");
require("core-js/modules/es.symbol.description.js");
require("core-js/modules/es.symbol.iterator.js");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _StylesModule = _interopRequireDefault(require("./styles/Styles.module.css"));
var _Context = _interopRequireDefault(require("./Context"));
var _react = _interopRequireWildcard(require("react"));
var _jsxRuntime = require("react/jsx-runtime");
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function TickerElement(props) {
var ref = (0, _react.useRef)();
var position = (0, _react.useRef)(props.position);
var previousTime = (0, _react.useRef)();
var context = (0, _react.useContext)(_Context.default);
var animationCallback = (0, _react.useMemo)(function () {
if (context.speed <= 0) {
return function (deltaTime) {
var left = position.current.left + context.speed * (deltaTime * 0.001);
position.current = {
left: left,
right: ref.current.offsetParent.offsetWidth - left - ref.current.offsetWidth
};
context.callback(props.index, position.current);
ref.current.style.left = "".concat(position.current.left, "px");
};
} else {
return function (deltaTime) {
var right = position.current.right - context.speed * (deltaTime * 0.001);
position.current = {
left: ref.current.offsetParent.offsetWidth - right - ref.current.offsetWidth,
right: right
};
context.callback(props.index, position.current);
ref.current.style.right = "".concat(position.current.right, "px");
};
}
// eslint-disable-next-line
}, [context]);
(0, _react.useEffect)(function () {
var animation;
var animate = function animate(time) {
var deltaTime = time - previousTime.current;
previousTime.current = time;
if (ref.current) animationCallback(deltaTime);
animation = requestAnimationFrame(animate);
};
if (!previousTime.current) previousTime.current = performance.now();
animation = requestAnimationFrame(animate);
return function () {
return cancelAnimationFrame(animation);
};
// eslint-disable-next-line
}, [context]);
return /*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
ref: ref,
className: _StylesModule.default.tickerElement,
style: context.speed <= 0 ? {
left: "".concat(position.current.left, "px")
} : {
right: "".concat(position.current.right, "px")
},
children: props.children
});
}
var _default = TickerElement;
exports.default = _default;