在Less中减轻父项的颜色 [英] Lighten color from parent in Less

问题描述

我从Less入手，我想要的原因之一是因为l​​igthen()函数.所以我的第一个尝试就是为此做些事情.

I am starting out with Less and one of the reasons I wanted to is because of the ligthen() function. So my first attempt was to do something with that.

这是我的HTML

<div class="box blue">
    <div class="boxbar">Foo</div>
    blue
</div>

我终于让它工作了，但我怀疑应该是这样的:

I finally got it working, but I doubt it's supposed be like this:

@blue:   #468ACE;
@green:  #41A53D;
@red:    #9C2525;
@purple: #8938BF;

div 
{
    padding: 10px;
}

.blue { 
    background-color: @blue; 
    .boxbar { background-color: lighten(@blue, 10%); }
}
.green { 
    background-color: @green; 
    .boxbar { background-color: lighten(@green, 10%); }
}
.red { 
    background-color: @red; 
    .boxbar { background-color: lighten(@red, 10%); }
}
.purple { 
    background-color: @purple; 
    .boxbar { background-color: lighten(@purple, 10%); }
}

.boxbar 
{
    height: 10px;
}

我该如何重构?当然，说获得您的父级颜色并使其稍微变浅"肯定更容易.我尝试了几件事:继承(值得一试！)，在.boxcar中包含简化的版本.但这显然编译为.boxcar .blue ..这不是我想要的，我以您在这里可以看到的结尾.然后，我需要为引入的每种新颜色编写代码.

How can I refactor this? Surely it must be easier to say "get your parent color, and lighten it a bit". I tried a couple of things: inherit (was worth a shot!), have the lightened versions inside .boxcar. But this obviously compiled to .boxcar .blue.. which is not what I want and I ended with what you can see here.. it works.. but it doesn't feel right. Then I would need to write code for every new color I introduce..

推荐答案

我不确定您想要的解决方案是什么……但是也许像制作mixin之类的东西可以帮助您不必编写太多的东西.

I am not completely sure what your desired solution would be ... but maybe something like making a mixin would help you from having to write so much stuff out.

少:

.bgmixin(@color) {
    (~".@{color}") {
        background-color: @@color;
        .boxbar {
            background-color: lighten(@@color, 10%);
        }
    }
}

@blue: #468ACE;
@green: #41A53D;
@red: #9C2525;

.bgmixin("blue");
.bgmixin("green");
.bgmixin("red");

CSS:

.blue{
  background-color: #468ace;
}
.blue .boxbar {
  background-color: #6ea3d9;
}
.green{
  background-color: #41a53d;
}
.green .boxbar {
  background-color: #59c055;
}
.red{
  background-color: #9c2525;
}
.red .boxbar{
  background-color: #c52f2f;
}

---

更新:

在 LESS> = 1.4 中，您想使用类似的方法从颜色名称中插入类名称:

---

Update:

In LESS>=1.4 you would want to use something like this to interpolate the class name from the color name:

.bgmixin(@color) {
    @classname: ~"@{color}"; 
    .@{classname} {
        background-color: @@color;
        .boxbar {
            background-color: lighten(@@color, 10%);
        }
    }
}

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