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Iconify for Ember

In addition to SVG framework, Iconify offers native components for several popular UI frameworks. Iconify for React is one of such components.

Yet another icon component? What are the advantages over other icon components?

  • One syntax for over 150,000 icons from 100+ icon sets.
  • Renders SVG. Many components simply render icon fonts, which look ugly. Iconify renders pixel perfect SVG.
  • Loads icons on demand. No need to bundle icons, component will automatically load icon data for icons that you use from Iconify API.

Installation

If you are using NPM:

npm install --save-dev @iconify/ember

If you are using Yarn:

yarn add --dev @iconify/ember

Usage

No need to import anything, Iconify for Ember is designed as addon for Ember, so Ember will automatically import component.

In template use IconifyIcon component with imported icon name as icon parameter:

hbs<IconifyIcon @icon='mdi-light:home' />

Properties

In Ember, all component properties start with @, such as @icon.

Required properties:

Optional properties:

  • inline, boolean changes vertical alignment.
  • width, string|number icon width.
  • height, string|number icon height.
  • hFlip, boolean flips icon horizontally.
  • vFlip, boolean flips icon vertically.
  • flip, string alternative to hFlip and vFlip.
  • rotate, number|string rotates icon.
  • color, string changes icon color.
  • onLoad, function is a callback that is called when icon data has been loaded. See below.

See below for more information on each optional property.

Icon

Icon name is a string, which has 3 parts:

@api-provider:icon-prefix:icon-name
provider prefix name
  • provider points to API source. Starts with "@", can be empty (empty value is used for public Iconify API).
  • prefix is name of icon set.
  • name is name of icon.

Examples of valid icon names:

  • flat-color-icons:voice-presentation - icon is "voice-presentation" from Flat Color Icons icon set, from public Iconify API.
  • mdi-light:home - icon is "home" from Material Design Light icon set, from public Iconify API.

Exceptions:

  • If the API provider is empty, it can be skipped (like in examples above).
  • If prefix does not contain "-", prefix and icon name can be separated with hyphen. This is to support people migrating from icon fonts. For example, fa:arrow-left and fa-arrow-left are identical because "fa" does not contain hyphen.

There are over 150,000 icons available from 100+ icon sets. Browse icons sets to see all available icons.

You can also add custom API providers for more icon choices. See API providers documentation.

Color

You can only change the color of monotone icons. Some icons, such as emoji, have a hardcoded palette that cannot be changed.

To add color to a monotone icon, simply change text color.

hbs<IconifyIcon @icon='mdi:home' style='color: red;' />

For various ways to set color, see how to change icon color in Iconify for Ember.

Dimensions

By default, icon height is set to "1em", icon width is changed dynamically based on the icon's width/height ratio. This makes it easy to change icon size by changing font-size in the stylesheet, just like icon fonts.

There are several ways to change icon dimensions:

  • Setting font-size in style (or fontSize if you are using inline style).
  • Setting width and/or height property.

Values for width and height can be numbers or strings.

If you set only one dimension, another dimension will be calculated using the icon's width/height ratio. For example, if the icon size is 16 x 24, you set the height to 48, the width will be set to 32. Calculations work not only with numbers, but also with string values.

hbs<IconifyIcon @icon='mdi:home' style='font-size: 24px;' />

For various ways to change icon dimensions, see how to change icon dimensions in Iconify for Ember.

Transformations

An icon can be rotated and flipped horizontally and/or vertically. All transformations are done relative to the center of the icon.

These are not CSS transformations, transformations are applied inside SVG.

For more details see how to transform icon in Iconify for Ember.

onLoad

onLoad property is an optional callback function. It is called when icon data has been loaded.

It is not an event, such as click event for links, it is a simple callback function.

When onLoad is called:

  • If value of icon property is an object, onLoad is not called.
  • If value of icon property is a string and icon data is available, onLoad is called on first render.
  • If value of icon property is a string and icon data is not available, onLoad is called on first re-render after icon data is retrieved from API.

What is the purpose of onLoad? To let you know when Icon component renders an icon and when it does not render anything. This allows you to do things like adding class name for the parent element, such as "container--with-icon" that modify layout if icon is being displayed.

SVG element properties

Any property that does not start with @ is passed to SVG element. You can use that to set style, class name, id or even override properties generated by component.

hbs<IconifyIcon @icon='mdi:home' id='test' />

This behavior is different from other components. Ember clearly separates component and element properties, other frameworks do not.

Functions

Component exports various functions, which developers can use to control icons.

In other frameworks you can import functions from main file, but Ember behaves differently. In Ember component, functions need to be imported directly from component file: @iconify/ember/components/iconify-icon.

Functions are split in several groups (click function name to see more details and examples):

Check available icons

There are several functions in this section:

Adding icons

Functions for adding icons to the component:

Note: icons added to the component with these functions are not stored in the icon data cache. Component caches only icons retrieved from API.

Helper functions

  • replaceIDs(html). Randomises IDs in generated string. This should be used when rendering icon based on data returned by getIcon() to make sure elements inside each icon have unique IDs.
  • calculateSize(). Calculates icon size. It is used to calculate width if only height is set and vice versa.
  • buildIcon(icon, customisations?). Generates data used by icon component. This can be used if you prefer to generate <svg> yourself. Data includes attributes for <svg> and inner HTML.

API functions

Internal API functions

There are several internal API functions that are exposed. They are intended to be used by developers that need more control over the component. For example, it is used in Sketch and Figma plug-ins. Use them carefully.

All internal API functions are exposed as properties of _api object:

  • getAPI(). Returns internal API module.
  • getAPIConfig(). Returns API configuration.
  • setAPIModule(provider). Sets API module for provider. This is an experimental function intended for custom API providers that use custom module for retrieving data from API.
  • setFetch(fetch). Set custom Fetch API.
  • getFetch(). Returns used fetch() function, null if Fetch API is not available.

Server side rendering

Older versions of Node.js do not support Fetch API. It is available in Node.js version 17 using flag "--experimental-fetch", but without it, Fetch API is not available. That means the icon component cannot retrieve icon data from Iconify API when used on a server side in Node.js environment.

How to support API in server side rendering?

  1. Install cross-fetch (if you are using CommonJS) or node-fetch (if you are using modules) as dependency.
  2. Use internal setFetch() function to set third party Fetch API before using any icon component functions.
jsimport { _api } from '@iconify/svelte';
import fetch from 'cross-fetch';
//  import fetch from 'node-fetch';

// Set Fetch API before doing anything
_api.setFetch(fetch);

Released under the Apache 2.0 License.