68 lines
1.9 KiB
JavaScript
68 lines
1.9 KiB
JavaScript
/**
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* 16进制转rgb
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* @param {String} color
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* @returns {String}
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*/
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export const hex2rgb = (color) => {
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var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/
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var sColor = color.toLowerCase()
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if (sColor && reg.test(sColor)) {
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if (sColor.length === 4) {
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var sColorNew = "#"
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for (var i = 1; i < 4; i += 1) {
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sColorNew += sColor.slice(i, i + 1).concat(sColor.slice(i, i + 1))
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}
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sColor = sColorNew
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}
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//处理六位的颜色值
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var sColorChange = [];
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for (var i = 1; i <= 6; i += 2) {
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sColorChange.push(parseInt("0x" + sColor.slice(i, i + 2)));
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}
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return "rgba(" + sColorChange.join(",") + ")"
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} else {
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return sColor
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}
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}
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// rbg带透明度转16进制
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export const rgb2hex = (color) => {
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var values = color
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.replace(/rgba?\(/, '')
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.replace(/\)/, '')
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.replace(/[\s+]/g, '')
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.split(',')
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var a = parseFloat(values[3] || 1),
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r = Math.floor(a * parseInt(values[0]) + (1 - a) * 255),
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g = Math.floor(a * parseInt(values[1]) + (1 - a) * 255),
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b = Math.floor(a * parseInt(values[2]) + (1 - a) * 255);
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return "#" +
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("0" + r.toString(16)).slice(-2) +
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("0" + g.toString(16)).slice(-2) +
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("0" + b.toString(16)).slice(-2)
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}
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// 16进制转换rgb，并设置透明度
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export const hex2rgba = (color, opacity) => {
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var theColor = color.toLowerCase()
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//十六进制颜色值的正则表达式
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var r = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/
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// 如果是16进制颜色
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if (theColor && r.test(theColor)) {
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if (theColor.length === 4) {
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var sColorNew = "#"
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for (var i = 1; i < 4; i += 1) {
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sColorNew += theColor.slice(i, i + 1).concat(theColor.slice(i, i + 1))
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}
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theColor = sColorNew
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}
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//处理六位的颜色值
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var sColorChange = []
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for (var i = 1; i < 7; i += 2) {
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sColorChange.push(parseInt("0x" + theColor.slice(i, i + 2)))
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}
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return "rgba(" + sColorChange.join(",") + "," + opacity + ")"
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}
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return theColor
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}
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