mix-ui
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mix-ui，对于uView UI的补充和组合，用于uni-app生态的UI框架
264 lines (258 loc) • 7.15 kB
JavaScript
/**
* 求两个颜色之间的渐变值
* @param {string} startColor 开始的颜色
* @param {string} endColor 结束的颜色
* @param {number} step 颜色等分的份额
* */
function colorGradient(startColor = 'rgb(0, 0, 0)', endColor = 'rgb(255, 255, 255)', step = 10) {
let startRGB = hexToRgb(startColor, false) //转换为rgb数组模式
let startR = startRGB[0]
let startG = startRGB[1]
let startB = startRGB[2]
let endRGB = hexToRgb(endColor, false)
let endR = endRGB[0]
let endG = endRGB[1]
let endB = endRGB[2]
let sR = (endR - startR) / step //总差值
let sG = (endG - startG) / step
let sB = (endB - startB) / step
let colorArr = []
for (let i = 0; i < step; i++) {
//计算每一步的hex值
let hex = rgbToHex('rgb(' + Math.round(sR * i + startR) + ',' + Math.round(sG * i + startG) + ',' + Math.round(sB * i + startB) + ')')
colorArr.push(hex)
}
return colorArr
}
// 将hex表示方式转换为rgb表示方式(这里返回rgb数组模式)
function hexToRgb(sColor, str = true) {
let reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/
sColor = sColor.toLowerCase()
if (sColor && reg.test(sColor)) {
if (sColor.length === 4) {
let sColorNew = '#'
for (let i = 1; i < 4; i += 1) {
sColorNew += sColor.slice(i, i + 1).concat(sColor.slice(i, i + 1))
}
sColor = sColorNew
}
//处理六位的颜色值
let sColorChange = []
for (let i = 1; i < 7; i += 2) {
sColorChange.push(parseInt('0x' + sColor.slice(i, i + 2)))
}
if (!str) {
return sColorChange
} else {
return `rgb(${sColorChange[0]},${sColorChange[1]},${sColorChange[2]})`
}
} else if (/^(rgb|RGB)/.test(sColor)) {
let arr = sColor.replace(/(?:\(|\)|rgb|RGB)*/g, '').split(',')
return arr.map(val => Number(val))
} else {
const val = getColorVal(sColor)
if (val) {
return hexToRgb(val, str)
} else {
return sColor
}
}
}
// 将rgb表示方式转换为hex表示方式
function rgbToHex(rgb) {
let _this = rgb
let reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/
if (/^(rgb|RGB)/.test(_this)) {
let aColor = _this.replace(/(?:\(|\)|rgb|RGB)*/g, '').split(',')
let strHex = '#'
for (let i = 0; i < aColor.length; i++) {
let hex = Number(aColor[i]).toString(16)
hex = String(hex).length == 1 ? 0 + '' + hex : hex // 保证每个rgb的值为2位
if (hex === '0') {
hex += hex
}
strHex += hex
}
if (strHex.length !== 7) {
strHex = _this
}
return strHex
} else if (reg.test(_this)) {
let aNum = _this.replace(/#/, '').split('')
if (aNum.length === 6) {
return _this
} else if (aNum.length === 3) {
let numHex = '#'
for (let i = 0; i < aNum.length; i += 1) {
numHex += aNum[i] + aNum[i]
}
return numHex
}
} else {
const val = getColorVal(rgb)
if (val) {
return val
} else {
return _this
}
}
}
// 将颜色名字转换成Hex
function getColorVal(name) {
const colors = {
aliceblue: '#F0F8FF',
antiquewhite: '#FAEBD7',
aqua: '#00FFFF',
aquamarine: '#7FFFD4',
azure: '#F0FFFF',
beige: '#F5F5DC',
bisque: '#FFE4C4',
black: '#000000',
blanchedalmond: '#FFEBCD',
blue: '#0000FF',
blueviolet: '#8A2BE2',
brown: '#A52A2A',
burlywood: '#DEB887',
cadetblue: '#5F9EA0',
chartreuse: '#7FFF00',
chocolate: '#D2691E',
coral: '#FF7F50',
cornflowerblue: '#6495ED',
cornsilk: '#FFF8DC',
crimson: '#DC143C',
cyan: '#00FFFF',
darkblue: '#00008B',
darkcyan: '#008B8B',
darkgoldenrod: '#B8860B',
darkgray: '#A9A9A9',
darkgreen: '#006400',
darkkhaki: '#BDB76B',
darkmagenta: '#8B008B',
darkolivegreen: '#556B2F',
darkorange: '#FF8C00',
darkorchid: '#9932CC',
darkred: '#8B0000',
darksalmon: '#E9967A',
darkseagreen: '#8FBC8F',
darkslateblue: '#483D8B',
darkslategray: '#2F4F4F',
darkturquoise: '#00CED1',
darkviolet: '#9400D3',
deeppink: '#FF1493',
deepskyblue: '#00BFFF',
dimgray: '#696969',
dodgerblue: '#1E90FF',
firebrick: '#B22222',
floralwhite: '#FFFAF0',
forestgreen: '#228B22',
fuchsia: '#FF00FF',
gainsboro: '#DCDCDC',
ghostwhite: '#F8F8FF',
gold: '#FFD700',
goldenrod: '#DAA520',
gray: '#808080',
green: '#008000',
greenyellow: '#ADFF2F',
honeydew: '#F0FFF0',
hotpink: '#FF69B4',
indianred: '#CD5C5C',
indigo: '#4B0082',
ivory: '#FFFFF0',
khaki: '#F0E68C',
lavender: '#E6E6FA',
lavenderblush: '#FFF0F5',
lawngreen: '#7CFC00',
lemonchiffon: '#FFFACD',
lightblue: '#ADD8E6',
lightcoral: '#F08080',
lightcyan: '#E0FFFF',
lightgoldenrodyellow: '#FAFAD2',
lightgreen: '#90EE90',
lightgrey: '#D3D3D3',
lightpink: '#FFB6C1',
lightsalmon: '#FFA07A',
lightseagreen: '#20B2AA',
lightskyblue: '#87CEFA',
lightslategray: '#778899',
lightsteelblue: '#B0C4DE',
lightyellow: '#FFFFE0',
lime: '#00FF00',
limegreen: '#32CD32',
linen: '#FAF0E6',
magenta: '#FF00FF',
maroon: '#800000',
mediumaquamarine: '#66CDAA',
mediumblue: '#0000CD',
mediumorchid: '#BA55D3',
mediumpurple: '#9370DB',
mediumseagreen: '#3CB371',
mediumslateblue: '#7B68EE',
mediumspringgreen: '#00FA9A',
mediumturquoise: '#48D1CC',
mediumvioletred: '#C71585',
midnightblue: '#191970',
mintcream: '#F5FFFA',
mistyrose: '#FFE4E1',
moccasin: '#FFE4B5',
navajowhite: '#FFDEAD',
navy: '#000080',
oldlace: '#FDF5E6',
olive: '#808000',
olivedrab: '#6B8E23',
orange: '#FFA500',
orangered: '#FF4500',
orchid: '#DA70D6',
palegoldenrod: '#EEE8AA',
palegreen: '#98FB98',
paleturquoise: '#AFEEEE',
palevioletred: '#DB7093',
papayawhip: '#FFEFD5',
peachpuff: '#FFDAB9',
peru: '#CD853F',
pink: '#FFC0CB',
plum: '#DDA0DD',
powderblue: '#B0E0E6',
purple: '#800080',
red: '#FF0000',
rosybrown: '#BC8F8F',
royalblue: '#4169E1',
saddlebrown: '#8B4513',
salmon: '#FA8072',
sandybrown: '#F4A460',
seagreen: '#2E8B57',
seashell: '#FFF5EE',
sienna: '#A0522D',
silver: '#C0C0C0',
skyblue: '#87CEEB',
slateblue: '#6A5ACD',
slategray: '#708090',
snow: '#FFFAFA',
springgreen: '#00FF7F',
steelblue: '#4682B4',
tan: '#D2B48C',
teal: '#008080',
thistle: '#D8BFD8',
tomato: '#FF6347',
turquoise: '#40E0D0',
violet: '#EE82EE',
wheat: '#F5DEB3',
white: '#FFFFFF',
whitesmoke: '#F5F5F5',
yellow: '#FFFF00',
yellowgreen: '#9ACD32'
}
let val = ''
if (name) {
name = name.toLowerCase()
const _val = colors[name]
if (_val) {
val = _val
}
}
return val
}
export default {
colorGradient,
hexToRgb,
rgbToHex
}