Js----颜色转换器

js代码

function rgbToHex(color){
    return Qt.rgba(color.r,color.g,color.b,1.0)
}

function hexToRgb(hex) {
    var ret;
    if(hex.length === 4 || hex.length === 7){
        if(hex.length === 4){
            var sColorNew = "#";
            for(var i=1; i<4; i+=1){
                sColorNew += hex.slice(i,i+1).concat(hex.slice(i,i+1));
            }
            hex = sColorNew;
        }
        ret = getRgb(hex);
    }else if(hex.length === 9){
        var opacity = parseInt("0x" + hex.slice(1, 3)) / 255;
        opacity = opacity.toFixed(2);
        ret = getRgba(hex,opacity);

    }else{
        ret = "---> Error format color!";
    }
        return ret ;
}

function getRgba(hex,opacity){
    return "rgba(" + parseInt("0x" + hex.slice(1, 3))
            + "," + parseInt("0x" + hex.slice(3, 5)) + ","
            + parseInt("0x" + hex.slice(5, 7)) + ","
             + opacity.toString() + ")";
}
function getRgb(hex){
    return "rgba(" + parseInt("0x" + hex.slice(1, 3))
            + "," + parseInt("0x" + hex.slice(3, 5)) + ","
            + parseInt("0x" + hex.slice(5, 7)) + ")";
}

 

是ES5语法。QML使用的