78 lines
3.1 KiB
JavaScript
78 lines
3.1 KiB
JavaScript
function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }
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/* eslint-disable no-param-reassign */
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import warning from 'warning';
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// Follow https://material.google.com/motion/duration-easing.html#duration-easing-natural-easing-curves
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// to learn the context in which each easing should be used.
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export const easing = {
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// This is the most common easing curve.
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easeInOut: 'cubic-bezier(0.4, 0, 0.2, 1)',
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// Objects enter the screen at full velocity from off-screen and
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// slowly decelerate to a resting point.
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easeOut: 'cubic-bezier(0.0, 0, 0.2, 1)',
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// Objects leave the screen at full velocity. They do not decelerate when off-screen.
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easeIn: 'cubic-bezier(0.4, 0, 1, 1)',
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// The sharp curve is used by objects that may return to the screen at any time.
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sharp: 'cubic-bezier(0.4, 0, 0.6, 1)'
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};
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// Follow https://material.io/guidelines/motion/duration-easing.html#duration-easing-common-durations
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// to learn when use what timing
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export const duration = {
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shortest: 150,
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shorter: 200,
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short: 250,
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// most basic recommended timing
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standard: 300,
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// this is to be used in complex animations
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complex: 375,
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// recommended when something is entering screen
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enteringScreen: 225,
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// recommended when something is leaving screen
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leavingScreen: 195
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};
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export const formatMs = milliseconds => `${Math.round(milliseconds)}ms`;
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export const isString = value => typeof value === 'string';
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export const isNumber = value => !Number.isNaN(parseFloat(value));
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/**
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* @param {string|Array} props
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* @param {object} param
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* @param {string} param.prop
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* @param {number} param.duration
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* @param {string} param.easing
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* @param {number} param.delay
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*/
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export default {
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easing,
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duration,
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create(props = ['all'], options = {}) {
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const {
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duration: durationOption = duration.standard,
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easing: easingOption = easing.easeInOut,
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delay = 0
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} = options,
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other = _objectWithoutProperties(options, ['duration', 'easing', 'delay']);
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warning(isString(props) || Array.isArray(props), 'Material-UI: argument "props" must be a string or Array');
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warning(isNumber(durationOption), `Material-UI: argument "duration" must be a number but found ${durationOption}`);
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warning(isString(easingOption), 'Material-UI: argument "easing" must be a string');
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warning(isNumber(delay), 'Material-UI: argument "delay" must be a string');
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warning(Object.keys(other).length === 0, `Material-UI: unrecognized argument(s) [${Object.keys(other).join(',')}]`);
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return (Array.isArray(props) ? props : [props]).map(animatedProp => `${animatedProp} ${formatMs(durationOption)} ${easingOption} ${formatMs(delay)}`).join(',');
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},
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getAutoHeightDuration(height) {
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if (!height) {
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return 0;
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}
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const constant = height / 36;
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// https://www.wolframalpha.com/input/?i=(4+%2B+15+*+(x+%2F+36+)+**+0.25+%2B+(x+%2F+36)+%2F+5)+*+10
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return Math.round((4 + 15 * Math.pow(constant, 0.25) + constant / 5) * 10);
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}
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}; |