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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 | 1x 1x 1x 1x 4x 1x 4x 24x 24x 4x 12x 12x 6x 4x 6x 6x 4x 3x 3x 3x 3x 3x 3x 4x 3x 3x 3x 3x 3x 3x 4x 6x 6x 4x 3x 3x 1x 4x 4x 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 { calculateRgba, sizeDefaults, sizeKeys } from "./helpers/index"; import { StyleFunction, PrecompiledCss, LoaderSizeProps, CalcFunction, StyleFunctionWithIndex } from "./interfaces"; class Loader extends React.PureComponent<LoaderSizeProps> { public static defaultProps: LoaderSizeProps = sizeDefaults(50); public thickness: CalcFunction<number> = (): number => { const { size } = this.props; return size! / 5; }; public lat: CalcFunction<number> = (): number => { const { size } = this.props; return (size! - this.thickness()) / 2; }; public offset: CalcFunction<number> = (): number => this.lat() - this.thickness(); public color: CalcFunction<string> = (): string => { const { color } = this.props; return calculateRgba(color!, 0.75); }; public before: CalcFunction<Keyframes> = (): Keyframes => { const { size, sizeUnit } = this.props; const color: string = this.color(); const lat: number = this.lat(); const thickness: number = this.thickness(); const offset: number = this.offset(); return keyframes` 0% {width: ${thickness}px;box-shadow: ${lat}px ${-offset}px ${color}, ${-lat}px ${offset}px ${color}} 35% {width: ${`${size}${sizeUnit}`};box-shadow: 0 ${-offset}px ${color}, 0 ${offset}px ${color}} 70% {width: ${thickness}px;box-shadow: ${-lat}px ${-offset}px ${color}, ${lat}px ${offset}px ${color}} 100% {box-shadow: ${lat}px ${-offset}px ${color}, ${-lat}px ${offset}px ${color}} `; }; public after: CalcFunction<Keyframes> = (): Keyframes => { const { size, sizeUnit } = this.props; const color: string = this.color(); const lat: number = this.lat(); const thickness: number = this.thickness(); const offset: number = this.offset(); return keyframes` 0% {height: ${thickness}px;box-shadow: ${offset}px ${lat}px ${color}, ${-offset}px ${-lat}px ${color}} 35% {height: ${`${size}${sizeUnit}`};box-shadow: ${offset}px 0 ${color}, ${-offset}px 0 ${color}} 70% {height: ${thickness}px;box-shadow: ${offset}px ${-lat}px ${color}, ${-offset}px ${lat}px ${color}} 100% {box-shadow: ${offset}px ${lat}px ${color}, ${-offset}px ${-lat}px ${color}} `; }; public style: StyleFunctionWithIndex = (i: number): PrecompiledCss => { const { size, sizeUnit } = this.props; return css` position: absolute; content: ""; top: 50%; left: 50%; display: block; width: ${`${size! / 5}${sizeUnit}`}; height: ${`${size! / 5}${sizeUnit}`}; border-radius: ${`${size! / 10}${sizeUnit}`}; transform: translate(-50%, -50%); animation-fill-mode: none; animation: ${i === 1 ? this.before() : this.after()} 2s infinite; `; }; public wrapper: StyleFunction = (): PrecompiledCss => { const { size, sizeUnit } = this.props; return css` position: relative; width: ${`${size}${sizeUnit}`}; height: ${`${size}${sizeUnit}`}; transform: rotate(165deg); `; }; public render(): JSX.Element | null { const { loading, css } = this.props; return loading ? ( <div css={[this.wrapper(), css]}> <div css={this.style(1)} /> <div css={this.style(2)} /> </div> ) : null; } } const Component: React.ComponentClass<LoaderSizeProps> = onlyUpdateForKeys(sizeKeys)(Loader); Component.defaultProps = Loader.defaultProps; export default Component; |