Global Themes

Overview

If you’ve included the igniteui-angular.css file in your application project, now is a good time to remove it. We are going to use our own my-app-theme.scss file to generate a global theme for all components in our application.

Ignite UI for Angular uses a global theme by default to theme the entire suite of components. You can, however, create themes scoped to components you have in your app, depending on your use case. For now, we will be including all of our themes in a single file. To generate a global theme we’re going to be including two mixins core and theme. Both of those mixins accept a few arguments:

Core mixin

Theme mixins

Let’s create a custom global theme that will use the primary, secondary and surface colors of our company.

// Import the theming module
@use "igniteui-angular/theming" as *;

// IMPORTANT: Prior to Ignite UI for Angular version 13 use:
// @import '~igniteui-angular/lib/core/styles/themes/index';

$primary-color: #2ab759;
$secondary-color: #f96a88;
$surface-color: #fff;

$my-color-palette: palette(
    $primary: $primary-color,
    $secondary: $secondary-color,
    $surface: $surface-color
);

// IMPORTANT: Make sure you always include core first!
@include core();
@include typography();
// Pass the color palette we generated to the theme mixin.
@include theme($my-color-palette);

Let’s explain what the core and theme mixins do. The core mixin takes care of some configurations, like adding enhanced accessibility(e.g. colors suitable for color blind users) and printing styles for all components. The theme mixin includes each individual component style (bar the ones listed as excluded) and configures the palette, schema, elevations, and roundness that is not listed in the $exclude list of components.

Excluding Components

The theme mixin allows you to provide a list of component names to be excluded from the global theme styles. For instance, if you want to completely remove all styles we include for the igx-avatar and igx-badge to reduce the amount of produced CSS or to supply your own custom styles, you can do so by passing the list of components like so:

// ...
$unnecessary: (igx-avatar, igx-badge);

@include theme($my-color-palette, $exclude: $unnecessary);

If you know your app will not be using some of our components, we recommend you add them to the $exclude list.

You can do the inverse, i.e. include only the component styles you want using the method below:

@use 'sass:map';

@function include($items, $register) {
    @return map.keys(map.remove($register, $items...));
}

$allowed: (igx-avatar, igx-badge);

@include theme(
    $exclude: include($allowed, $components)
);

Light and Dark Themes

We also provide light and dark versions for our four themes - Material, Fluent, Indigo, Bootstrap.

To use any of the versions, you would simply need to pass it to our theme mixin:

Light

@include core();
@include typography(
    $font-family: $material-typeface,
    $type-scale: $material-type-scale
);
@include theme(
    $schema: $light-material-schema,
    $palette: $light-material-palette,
);

*Dark_

@include core();
@include typography(
    $font-family: $material-typeface,
    $type-scale: $material-type-scale
);
@include theme(
    $schema: $dark-material-schema,
    $palette: $dark-material-palette,
);

Available Themes

Ignite UI for Angular gives you the option to pick from a set of predefined themes. The table below shows all the built-in themes that you can use right away.

Additional Resources

Learn how to create individual component themes:

• Component Themes

Our community is active and always welcoming to new ideas.

• Ignite UI for Angular Forums
• Ignite UI for Angular GitHub