Calcite Base

The calcite-base repository holds the variables and mixins used in Calcite Components. This includes resources regarding:

• motion (easing functions, transitions)
• type (font stacks, sizing, spacing mixins)
• reponsive design (breakpoints, respond-to mixins)
• utilities (clearfix, show/hide, etc)
• shadow (defined levels of depth)
• spacing (standardized vertical/horizontal spacing units)

Install

If you use npm, installation is as easy as:

npm install @esri/calcite-base

You can also download the latest release manually.

Use

In a Sass project, simply import calcite-base into your project and use the variables/mixins:

@import "./node_modules/@esri/calcite-base/dist/_index.scss";

.myClass {
  @include font-size(-1);
}

If you only require certain mixins, you can import each section directly as well:

@import "./node_modules/@esri/calcite-base/dist/_type.scss";

.myClass {
  @include avenir-light();
  @include font-size(-1);
  @include leading(2);
  @include tracking(166);
  @include word-spacing(200);
}

Custom Properties

If you are using PostCSS (or standard CSS) there are a series of files which declare the variables utilizing custom properties (CSS Variables). You can use these along with something like the postcss-custom-properties library to utilize the base colors, styles, etc in your postcss project:

@import "./node_modules/@esri/calcite-base/dist/variables.css";

.myClass {
  box-shadow: var(--shadow-1);
}

Focus State Styling

The included focus state styling mixins rely on a --calcite-ui-blue-1 variable from calcite-colors. You can find the Calcite Colors repository on GitHub.

JavaScript

If you need some of these values and are using a CSS-in-JS approach, you can import them from the JavaScript file using ES6 modules:

import {avenirLight} from "@esri/calcite-base";
console.log(avenirLight); // '"Avenir Next", "Avenir", "Helvetica Neue", sans-serif'

Note when using partial imports like this, the hyphenated variables become camel case.

Licensing

COPYRIGHT © 2020 Esri

All rights reserved under the copyright laws of the United States and applicable international laws, treaties, and conventions.

This material is licensed for use under the Esri Master License Agreement (MLA), and is bound by the terms of that agreement. You may redistribute and use this code without modification, provided you adhere to the terms of the MLA and include this copyright notice.

See use restrictions at http://www.esri.com/legal/pdfs/mla_e204_e300/english

For additional information, contact: Environmental Systems Research Institute, Inc. Attn: Contracts and Legal Services Department 380 New York Street Redlands, California, USA 92373 USA

email: contracts@esri.com

Contributing

Please read the contribute document.