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    @apimediaru/postcss-px-to-viewport

    1.2.4 • Public • Published

    postcss-px-to-viewport

    NPM version

    English | 中文

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

    Demo

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

    Input

    .class {
      margin: -10px .5vh;
      padding: 5vmin 9.5px 1px;
      border: 3px solid black;
      border-bottom-width: 1px;
      font-size: 14px;
      line-height: 20px;
    }
    
    .class2 {
      padding-top: 10px; /* px-to-viewport-ignore */
      /* px-to-viewport-ignore-next */
      padding-bottom: 10px;
      /* Any other comment */
      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: 4.375vw;
      line-height: 6.25vw;
    }
    
    .class2 {
      padding-top: 10px;
      padding-bottom: 10px;
      /* Any other comment */
      border: 1px solid black;
      margin-bottom: 1px;
      font-size: 6.25vw;
      line-height: 9.375vw;
    }
    
    @media (min-width: 750px) {
      .class3 {
        font-size: 16px;
        line-height: 22px;
      }
    }

    Getting Started

    Installation

    Add via npm

    $ npm install @apimediaru/postcss-px-to-viewport --save-dev
    

    Usage

    Default Options:

    {
      unitToConvert: 'px',
      viewportWidth: 320,
      unitPrecision: 5,
      propList: ['*'],
      viewportUnit: 'vw',
      fontViewportUnit: 'vw',
      selectorBlackList: [],
      minPixelValue: 1,
      mediaQuery: false,
      replace: true,
      exclude: undefined,
      include: undefined,
      landscape: false,
      landscapeUnit: 'vw',
      landscapeWidth: 568,
      
      api_multiplier: 1
    }
    • unitToConvert (String) unit to convert, by default, it is px.
    • viewportWidth (Number) The width of the viewport.
    • unitPrecision (Number) The decimal numbers to allow the vw units to grow to.
    • propList (Array) The properties that can change from px to vw.
      • Values need to be exact matches.
      • Use wildcard * to enable all properties. Example: ['*']
      • Use * at the start or end of a word. (['position'] will match background-position-y)
      • Use ! to not match a property. Example: ['*', '!letter-spacing']
      • Combine the "not" prefix with the other prefixes. Example: ['', '!font']
    • viewportUnit (String) Expected units.
    • fontViewportUnit (String) Expected units for font.
    • 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
    • minPixelValue (Number) Set the minimum pixel value to replace.
    • mediaQuery (Boolean) Allow px to be converted in media queries.
    • replace (Boolean) replaces rules containing vw instead of adding fallbacks.
    • exclude (Regexp or Array of Regexp) Ignore some files like 'node_modules'
      • If value is regexp, will ignore the matches files.
      • If value is array, the elements of the array are regexp.
    • include (Regexp or Array of Regexp) If include is set, only matching files will be converted, for example, only files under src/mobile/ (include: /\/src\/mobile\//)
      • If the value is regexp, the matching file will be included, otherwise it will be excluded.
      • If value is array, the elements of the array are regexp.
    • landscape (Boolean) Adds @media (orientation: landscape) with values converted via landscapeWidth.
    • landscapeUnit (String) Expected unit for landscape option
    • landscapeWidth (Number) Viewport width for landscape orientation.

    exclude and include can be set together, and the intersection of the two rules will be taken.

    Ignoring

    You can use special comments for ignore conversion of single lines:

    • /* px-to-viewport-ignore-next */ — on a separate line, prevents conversion on the next line.
    • /* px-to-viewport-ignore */ — after the property on the right, prevents conversion on the same line.

    Example:

    /* example input: */
    .class {
      /* px-to-viewport-ignore-next */
      width: 10px;
      padding: 10px;
      height: 10px; /* px-to-viewport-ignore */
      border: solid 2px #000; /* px-to-viewport-ignore */
    }
    
    /* example output: */
    .class {
      width: 10px;
      padding: 3.125vw;
      height: 10px;
      border: solid 2px #000;
    }

    There are several more reasons why your pixels may not convert, the following options may affect this: propList, selectorBlackList, minPixelValue, mediaQuery, exclude, include.

    Use with PostCss configuration file

    add to your postcss.config.js

    module.exports = {
      plugins: {
        // ...
        'postcss-px-to-viewport': {
          // options
        }
      }
    }

    Use with gulp-postcss

    add to your gulpfile.js:

    var gulp = require('gulp');
    var postcss = require('gulp-postcss');
    var pxtoviewport = require('postcss-px-to-viewport');
    
    gulp.task('css', function () {
    
        var processors = [
            pxtoviewport({
                viewportWidth: 320,
                viewportUnit: 'vmin'
            })
        ];
    
        return gulp.src(['build/css/**/*.css'])
            .pipe(postcss(processors))
            .pipe(gulp.dest('build/css'));
    });

    Contributing

    Please read Code of Conduct and Contributing Guidelines for submitting pull requests to us.

    Running the tests

    In order to run tests, you need to install dev-packages:

    $ npm install
    

    Then run the tests via npm script:

    $ npm run test
    

    Changelog

    The changelog is here.

    Versioning

    We use SemVer for versioning. For the versions available, see the tags on this repository.

    Authors

    See also the list of contributors who participated in this project.

    License

    This project is licensed under the MIT License.

    Sponsors

    Visit Evrone website to get more information about the projects build.

    Sponsored by Evrone

    Acknowledgments

    Install

    npm i @apimediaru/postcss-px-to-viewport

    DownloadsWeekly Downloads

    4

    Version

    1.2.4

    License

    MIT

    Unpacked Size

    39.7 kB

    Total Files

    14

    Last publish

    Collaborators

    • exileofaranei
    • graandy