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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | 1x 1x 1x 1x 1x 1x 5x 1x 5x 24x 24x 5x 4x 1x 5x 5x 1x 1x 1x 1x | /** @jsx jsx */ import * as React from "react"; import { keyframes, css, jsx } from "@emotion/core"; import { Keyframes } from "@emotion/serialize"; import onlyUpdateForKeys from "recompose/onlyUpdateForKeys"; import { sizeDefaults, sizeKeys } from "./helpers"; import { StyleFunction, PrecompiledCss, LoaderSizeProps, StyleFunctionWithIndex } from "./interfaces"; // 1.5 4.5 7.5 let distance: number[] = [1, 3, 5]; const propagate: Keyframes[] = [ keyframes` 25% {transform: translateX(-${distance[0]}rem) scale(0.75)} 50% {transform: translateX(-${distance[1]}rem) scale(0.6)} 75% {transform: translateX(-${distance[2]}rem) scale(0.5)} 95% {transform: translateX(0rem) scale(1)} `, keyframes` 25% {transform: translateX(-${distance[0]}rem) scale(0.75)} 50% {transform: translateX(-${distance[1]}rem) scale(0.6)} 75% {transform: translateX(-${distance[1]}rem) scale(0.6)} 95% {transform: translateX(0rem) scale(1)} `, keyframes` 25% {transform: translateX(-${distance[0]}rem) scale(0.75)} 75% {transform: translateX(-${distance[0]}rem) scale(0.75)} 95% {transform: translateX(0rem) scale(1)} `, keyframes` 25% {transform: translateX(${distance[0]}rem) scale(0.75)} 75% {transform: translateX(${distance[0]}rem) scale(0.75)} 95% {transform: translateX(0rem) scale(1)} `, keyframes` 25% {transform: translateX(${distance[0]}rem) scale(0.75)} 50% {transform: translateX(${distance[1]}rem) scale(0.6)} 75% {transform: translateX(${distance[1]}rem) scale(0.6)} 95% {transform: translateX(0rem) scale(1)} `, keyframes` 25% {transform: translateX(${distance[0]}rem) scale(0.75)} 50% {transform: translateX(${distance[1]}rem) scale(0.6)} 75% {transform: translateX(${distance[2]}rem) scale(0.5)} 95% {transform: translateX(0rem) scale(1)} ` ]; class Loader extends React.PureComponent<LoaderSizeProps> { public static defaultProps: LoaderSizeProps = sizeDefaults(15); public style: StyleFunctionWithIndex = (i: number): PrecompiledCss => { const { size, sizeUnit, color } = this.props; return css` position: absolute; font-size: ${`${size! / 3}${sizeUnit}`}; width: ${`${size}${sizeUnit}`}; height: ${`${size}${sizeUnit}`}; background: ${color}; border-radius: 50%; animation: ${propagate[i]} 1.5s infinite; animation-fill-mode: forwards; `; }; public wrapper: StyleFunction = (): PrecompiledCss => { return css` position: relative; `; }; public render(): JSX.Element | null { const { loading, css } = this.props; return loading ? ( <div css={[this.wrapper(), css]}> <div css={this.style(0)} /> <div css={this.style(1)} /> <div css={this.style(2)} /> <div css={this.style(3)} /> <div css={this.style(4)} /> <div css={this.style(5)} /> </div> ) : null; } } const Component: React.ComponentClass<LoaderSizeProps> = onlyUpdateForKeys(sizeKeys)(Loader); Component.defaultProps = Loader.defaultProps; export default Component; |