Icon

The Icon category in the @bentley/ui-core package includes components that render icons when given an icon name or SVG source or path.

The Icon React component displays an icon based on an IconSpec. An IconSpec can be a string, ReactNode or ConditionalStringValue. When the IconSpec is a string, the value is either a Webfont name or a formatted string that includes an imported SVG. When using an SVG, it must be imported using the webpack loader svg-sprite-loader. The formatted string begins with "svg:". The IconSpecUtilities.createSvgIconSpec can be used to format the SVG string. See example usage below.

The SvgSprite React component displays an icon using <svg> and <use> elements to reference an imported SVG file. The SVG file must be imported using the webpack loader svg-sprite-loader.

The SvgSprite React component displays an icon using an <svg> element and an array of SVG paths.

Examples

We will demonstrate four different ways to display an icon.

Icon and Webfont name

<Icon iconSpec="icon-placeholder" />

Icon and SVG from @bentley/icons-generic

This example shows how to use an SVG from @bentley/icons-generic.

import { IconSpecUtilities } from "@bentley/ui-abstract";
import { Icon } from "@bentley/ui-core";

import placeholderSvg from "@bentley/icons-generic/icons/placeholder.svg?sprite";
. . .
const iconSpec = IconSpecUtilities.createSvgIconSpec(placeholderSvg);
. . .
<Icon iconSpec={iconSpec} />

Icon and SVG File

This example shows how to use an SVG from within the application.

import rotateSvg from "../icons/rotate.svg?sprite";
. . .
const iconSpec = IconSpecUtilities.createSvgIconSpec(rotateSvg);
. . .
<Icon iconSpec={iconSpec} />

SvgSprite and SVG File

Rather then using the Icon component with SVG files, the SvgSprite component can be used.

import { Icon } from "@bentley/ui-core";
import rotateSvg from "../icons/rotate.svg?sprite";
. . .
<SvgSprite src={rotateSvg} />

SvgPath

When you have SVG path statements instead of SVG files, the SvgPath component can be used.

import { SvgPath } from "@bentley/ui-core";
. . .
      <SvgPath viewBoxWidth={91} viewBoxHeight={91} paths={[
        "M86.734,49.492c-4.305,0.01-17.991,1.527-20.508,1.943c-1.589,0.261-3.454,0.267-4.732,1.335   c-1.173,0.98-0.649,2.788,0.453,3.52c1.182,0.78,17.18,0.641,19.686,0.645c-0.216,0.404-4.764,8.202-7.226,11.423   c-4.994,6.53-12.322,11.926-20.213,14.39c-9.906,3.093-21.47,0.982-30.055-4.716c-4.252-2.82-7.595-6.813-10.364-11.047   c-2.37-3.625-4.53-8.918-8.038-11.526c-0.238-0.18-0.687-0.002-0.732,0.298c-0.548,3.663,1.414,7.707,2.843,10.992   c1.7,3.904,4.146,7.539,6.933,10.755c5.891,6.799,14.97,10.758,23.738,12.057c15.313,2.272,30.362-4.708,39.961-16.643   c2.182-2.715,4.058-5.652,5.88-8.618c-0.04,4.63-0.08,9.262-0.109,13.891c-0.026,4.004,6.195,4.008,6.222,0   c0.054-8.303,0.122-16.604,0.122-24.907C90.594,51.061,87.978,49.49,86.734,49.492z",
        "M17.98,20.688c5.096-5.933,12.107-11.209,19.818-13.11c10.523-2.591,23.726,1.216,31.448,8.788   c3.523,3.45,6.227,7.538,8.734,11.751c2.084,3.496,4.084,8.505,7.364,11.009c0.244,0.187,0.678-0.004,0.731-0.296   c0.637-3.572-1.238-7.563-2.511-10.82c-1.516-3.889-3.713-7.637-6.163-11.013C72.166,9.786,64.534,5.113,56.037,2.605   C39.996-2.125,24.416,4.048,13.693,16.4c-2.328,2.684-4.36,5.616-6.345,8.567c0.256-3.586,0.517-7.172,0.765-10.759   c0.278-3.995-5.944-3.977-6.221,0c-0.492,7.064-1.519,21.896-1.484,22.229c0.013,0.612-0.002,3.301,2.793,3.301   c3.233,0.002,10.855-0.29,14.028-0.466c2.881-0.16,5.805-0.179,8.675-0.475c1.158-0.121,3.727-0.079,3.836-1.451   c0.175-2.197-3.893-3.01-4.988-3.118c-3.061-0.304-13.198-1.281-15.208-1.447c0.288-0.488,0.571-0.964,0.853-1.389   C12.798,27.753,15.135,24.001,17.98,20.688z",
      ]} />

SVG Support Setup

A few entries are required in the package,.json and tsconfig.json to support SVG files.

In package.json, add a dependency on svg-sprite-loader to load the SVG files:

"dependencies": {
. . .
    "svg-sprite-loader": "^3.8.0"

In package.json, add a sourceResources entry in the iModelJS.buildModule section to copy SVG files to the lib directory:

  "iModelJs": {
    "buildModule": {
      "type": "application",
      "sourceResources": [
. . .
        {
          "source": "./src/**/*.svg",
          "dest": "./lib"
        },

In tsconfig.json, add a types entry for @bentley/webpack-tools in the compilerOptions section to support SVG files:

"compilerOptions": {
. . .
    "types": [
      "@bentley/webpack-tools"
    ]

API Reference

• Icon

Last Updated: 29 November, 2022