vue 实现自定义主题切换+日夜切换

此处只参考 修改主题色， 日夜模式参考elep官网

function gradientColor(this: any, startColor: any, endColor: any, step: any) {
    let startRGB = gradientColor.prototype.colorRgb(startColor);//转换为rgb数组模式
    let startR = startRGB[0];
    let startG = startRGB[1];
    let startB = startRGB[2];
    let endRGB = gradientColor.prototype.colorRgb(endColor);
    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;
    var colorArr = [];
    for (var i = 0; i < step; i++) {
        //计算每一步的hex值 
        var hex = gradientColor.prototype.colorHex('rgb(' + parseInt((sR * i + startR)) + ',' + parseInt((sG * i + startG)) + ',' + parseInt((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)
gradientColor.prototype.colorRgb = function (sColor: any) {
    var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
    var sColor = sColor.toLowerCase();
    if (sColor && reg.test(sColor)) {
        if (sColor.length === 4) {
            var sColorNew = "#";
            for (var i = 1; i < 4; i += 1) {
                sColorNew += sColor.slice(i, i + 1).concat(sColor.slice(i, i + 1));
            }
            sColor = sColorNew;
        }
        //处理六位的颜色值
        var sColorChange = [];
        for (var i = 1; i < 7; i += 2) {
            sColorChange.push(parseInt("0x" + sColor.slice(i, i + 2)));
        }
        return sColorChange;
    } else {
        return sColor;
    }
};
// 将rgb表示方式转换为hex表示方式
gradientColor.prototype.colorHex = function (rgb: any) {
    var _this = rgb;
    var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
    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: any = Number(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 (var i = 0; i < aNum.length; i += 1) {
                numHex += (aNum[i] + aNum[i]);
            }
            return numHex;
        }
    } else {
        return _this;
    }
}
export default { gradientColor }

//设置主题色
const setTheme = (colorName: string, color: string): void => {
    const el = document.documentElement
    const oldColor = getComputedStyle(el).getPropertyValue(`--c-base`).trim()
    let gradient: any = getColorArr.gradientColor(color, oldColor, 10);
    gradient.forEach((item: string, index: number) => {
        if (index === 0) el.style.setProperty(`${colorName}`, item)
        if (index === 9) return
        el.style.setProperty(`${colorName}-light-${index + 1}`, item)
    })
}

https://gitee.com/hwd19981214/my-home/tree/theme/

https://blog.csdn.net/qq_43223007/article/details/127520694