deli-px2rem v0.0.2

postcss-px2vw

A plugin for PostCSS that generates viewport units (vw, vh, vmin, vmax) from pixel units.

Usage

If your project involves a fixed width, this script will help to convert pixels into viewport units.

Input/Output

// input

.class {
  margin: -10px .5vh;
  padding: 5vmin 9.5px 1px;
  border: 3px solid black;
  border-bottom-width: 1px;
  font-size: 14px;  /*no*/
  line-height: 20px;  /*no*/
}

.class2 {
  border: 1px solid black;
  margin-bottom: 1px;
  font-size: 20px;
  line-height: 30px;
}

@media (min-width: 750px) {
  .class3 {
    font-size: 16px;
    line-height: 22px;
  }
}

// output

.class {
  margin: -3.125vw .5vh;
  padding: 5vmin 2.96875vw 1px;
  border: 0.9375vw solid black;
  border-bottom-width: 1px;
  font-size: 14px;
  line-height: 20px;
}

.class2 {
  border: 1px solid black;
  margin-bottom: 1px;
  font-size: 6.25vw;
  line-height: 9.375vw;
}

@media (min-width: 234.375vw) {
  .class3 {
    font-size: 5vw;
    line-height: 6.875vw;
  }
}

Example

'use strict';

var fs = require('fs');
var postcss = require('postcss');
var pxToViewport = require('..');
var css = fs.readFileSync('main.css', 'utf8');
var options = {
    replace: false
};
var processedCss = postcss(pxToViewport(options)).process(css).css;

fs.writeFile('main-viewport.css', processedCss, function (err) {
  if (err) {
    throw err;
  }
  console.log('File with viewport units written.');
});

Options

Default:

{
  viewportWidth: 750,
  viewportHeight: 1334,
  unitPrecision: 5,
  viewportUnit: 'rem',
  selectorBlackList: [],
  exclude: [],
  minPixelValue: 1,
  mediaQuery: false,
  keepComment: 'no'
}

• viewportWidth (Number) The width of the viewport.
• viewportHeight (Number) The height of the viewport.
• unitPrecision (Number) The decimal numbers to allow the REM units to grow to.
• viewportUnit (String) Expected units.
• selectorBlackList (Array) The selectors to ignore and leave as px.
  • If value is string, it checks to see if selector contains the string.
    • ['body'] will match .body-class
  • If value is regexp, it checks to see if the selector matches the regexp.
    • [/^body$/] will match body but not .body
• exclude (Array) exclude some files, like [path.join(__dirname, 'src/views/styles')].
• minPixelValue (Number) Set the minimum pixel value to replace.
• mediaQuery (Boolean) Allow px to be converted in media queries.
• keepComment (String) no transform value comment (default: no)