Grid Template Utils

Installation

Yarn:

$ yarn add grid-template-utils

npm:

$ npm install --save grid-template-utils

Include with a module bundler like rollup or webpack:

// using ES6 modules
import { parse, combine, getSizeAtTrack } from 'grid-template-utils'
 
// using CommonJS modules
var utils = require('grid-template-utils')

The UMD build is also available on unpkg:

<script src="https://unpkg.com/grid-template-utils/dist/grid-template-utils.js"></script>

You can find the library on window.GridTemplateUtils.

Example

import { parse, combine, getSizeAtTrack } from 'grid-template-utils'
 
> parse('1fr 10px 1fr')
[
    {
        value: '1fr',
        type: 'fr',
        numeric: 1,
    },
    {
        value: '10px',
        type: 'px',
        numeric: 10,
    },
    {
        value: '1fr',
        type: 'fr',
        numeric: 1,
    },
]
 
> combine('1fr 10px 1fr', [,{ value: '20px' }])
'1fr 20px 1fr'
 
 
> getSizeAtTrack(1, parse('10px 10px 10px'))
20
 
> getSizeAtTrack(1, parse('10px 10px 10px'), 20)
40

Reference

Track { value: string, type: 'fr' | 'px' | '%' | 'auto', numeric: number }

Object describing CSS values for a single track in a grid template.

parse(rule: string) => Track[]

Parses a grid-template-rows or grid-template-columns CSS rule to an array of Track objects with value, type and numeric keys.

combine(rule: string, tracks: Track[]) => string

Updates a CSS rule with values from an array of Track objects. The array can be sparse, only included indices will be updated. If Track.value is specified, that string value will be used directly. If not, Track.numeric and Track.type are joined before interpolation.

getSizeAtTrack(index: number, tracks: Track[], gap?: number = 0, end?: boolean = false) => number

Returns the pixel size measured from the start of the grid layout up to the track specified by index. Each Track.numeric value should be a px value (for example, as returned by parse(getComputedStyle())). Optional argument gap is the pixel size of grid-gap. Optional agrument end is a flag that determines whether to measure up to the start or end of the track. Defaults to false (measure to the start of the track).

License

Copyright (c) 2018 Nathan Cahill

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.