react-super-progress
Version:
bee components
76 lines (74 loc) • 2.51 kB
JavaScript
const colorRgb = function (ssColor) {
const reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
let sColor = ssColor.toLowerCase();
if (sColor && reg.test(sColor)) {
if (sColor.length === 4) {
var sColorNew = '#';
for (let i = 1; i < 4; i += 1) {
sColorNew += sColor.slice(i, i + 1).concat(sColor.slice(i, i + 1));
}
sColor = sColorNew;
}
// 处理六位的颜色值
var sColorChange = [];
for (let i = 1; i < 7; i += 2) {
sColorChange.push(parseInt('0x' + sColor.slice(i, i + 2)));
}
return sColorChange;
} else {
return sColor;
}
};
const colorHex = function (rgb) {
var _this = rgb;
var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
if (/^(rgb|RGB)/.test(_this)) {
var aColor = _this.replace(/(?:(|)|rgb|RGB)*/g, '').split(',');
var strHex = '#';
for (var i = 0; i < aColor.length; i++) {
var hex = Number(aColor[i]).toString(16);
hex = hex < 10 ? 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)) {
var aNum = _this.replace(/#/, '').split('');
if (aNum.length === 6) {
return _this;
} else if (aNum.length === 3) {
var numHex = '#';
for (let i = 0; i < aNum.length; i += 1) {
numHex += (aNum[i] + aNum[i]);
}
return numHex;
}
} else {
return _this;
}
};
export function gradientColor (startColor, endColor, step) {
const startRGB = colorRgb(startColor);// 转换为rgb数组模式
const startR = startRGB[0];
const startG = startRGB[1];
const startB = startRGB[2];
const endRGB = colorRgb(endColor);
const endR = endRGB[0];
const endG = endRGB[1];
const endB = endRGB[2];
const sR = (endR - startR) / step;// 总差值
const sG = (endG - startG) / step;
const sB = (endB - startB) / step;
const colorArr = [];
for (var i = 0; i < step; i++) {
// 计算每一步的hex值
var hex = colorHex('rgb(' + parseInt((sR * i + startR)) + ',' + parseInt((sG * i + startG)) + ',' + parseInt((sB * i + startB)) + ')');
colorArr.push(hex);
}
return colorArr;
}