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retina-border

v1.0.3

Published

实现移动端 1px 物理像素边框,可实现任意原生的边框,包含 less、stylus 版本

Downloads

5

Readme

retina-border

实现移动端 1px 物理像素边框,可实现任意原生的边框,包含 less、stylus 版本

在 DPR = 2 的屏幕上会显示 0.5px CSS 像素,即 1px 物理像素。

在 DPR = 3 的屏幕上会显示 0.3333333px CSS 像素,即 1px 物理像素。

注意:

此方式是通过将元素的 before 伪类来实现 1px 物理像素边框的,因此元素的 before 不能再做他用,但是可以使用元素的 after 伪类。

Features

  • 可以模拟出 原生 CSS 的所有形式的边框,边框大小最小可以达到 1px 物理像素
  • 通过 继承 功能,最终产出的代码量最少

安装

NPM

npm install retina-border -S

通过 webpack 使用(需要结合 less-loader/stylus-loader)

// less
@import '~retina-border/src/less/index.less';

// stylus
@import '~retina-border/src/stylus/index.styl'

直接下载

文件说明

  • index.less/styl:(满足常用需求)引入 core.less/styl,暴露了 上/下/左/右/全边框 的类名
  • core.less/styl:(满足定制需求)retina-border 核心函数定义声明,如果有定制需求(比如同时需要 上下边框 或者 上下右边框),可跳过引入 index.less/stylus 直接引入 core.less/styl 函数,进入使用 retina-border 函数

使用

本工具提供一些常用的边框类型以供使用,其边框类型与类名(以及 less/stylus 函数)对应关系详见下表。 边框类型 | 类名 | less 函数 | stylus ---|---|---|--- 全 边框 | retina-border-all | #retina-border-all | retina-border-all 上 边框 | retina-border-top | #retina-border-top | retina-border-top 右 边框 | retina-border-right | #retina-border-right | retina-border-right 下 边框 | retina-border-bottom | #retina-border-bottom | retina-border-bottom 左 边框 | retina-border-left | #retina-border-left | retina-border-left

通用方式:直接添加 类名,满足常用需求

这种方式可以满足一般需求,通过在 html 元素上添加类名,实现边框。

<div class="retina-border-all">全边框</div>
<div class="retina-border-top">上边框</div>
<div class="retina-border-right">右边框</div>
<div class="retina-border-bottom">下边框</div>
<div class="retina-border-left">左边框</div>

边框的默认设置为

  • 边框宽度 border-width:1px
  • 边框风格 border-style:solid
  • 边框颜色 border-color:#e1e1e1
  • 边框圆角 border-radius:0

调用 retina-border 核心函数,满足定制需求

  • 某些场景下无法直接在 class 里添加类名,需要在(预处理)样式文件里添加边框
  • 有其他边框需求,如想添加两条/三条边框,需要不同的 border-width/style/color等

如果遇到如下需求,可以直接调用 retina-border 函数,此种方式可以实现原生 CSS 的所有边框形式。

具体请参考: