Angular-Material-Dynamic-Themes
Making able the app to switch between material themes at run-time
Table of Contents
In your Angular Material project:
npm install angular-material-dynamic-themesNOTE: This solution is only compatible with SASS/SCSS preprocessor.
In your styles.scss (or themes.scss if you have):
// Below codes should only be included ONCE in your application.
@import '~@angular/material/theming';
@include mat-core();
// Add your desired themes to this map.
$themes-map: (
indigo-pink: (
primary-base: $mat-indigo,
accent-base: $mat-pink,
),
deeppurple-amber: (
primary-base: $mat-deep-purple,
accent-base: $mat-amber,
),
pink-bluegrey: (
primary-base: $mat-pink,
accent-base: $mat-blue-gray,
),
purple-green: (
primary-base: $mat-purple,
accent-base: $mat-green,
),
);
// Import the module and do the job:
@import '~angular-material-dynamic-themes/themes-core';
@include make-stylesheets($themes-map);For more information about $themes-map and adding more customizations to your themes, see Advanced Usage.
In your main component:
import {Component, HostBinding} from '@angular/core'
import {OverlayContainer} from '@angular/cdk/overlay'
const THEME_DARKNESS_SUFFIX = `-dark`
export class AppComponent {
@HostBinding('class') activeThemeCssClass: string
isThemeDark = false
activeTheme: string
constructor(private overlayContainer: OverlayContainer) {
// Set default theme here:
this.setActiveTheme('deeppurple-amber', /* darkness: */ false)
}
setActiveTheme(theme: string, darkness: boolean = null) {
if (darkness === null)
darkness = this.isThemeDark
else if (this.isThemeDark === darkness) {
if (this.activeTheme === theme) return
} else
this.isThemeDark = darkness
this.activeTheme = theme
const cssClass = darkness === true ? theme + THEME_DARKNESS_SUFFIX : theme
const classList = this.overlayContainer.getContainerElement().classList
if (classList.contains(this.activeThemeCssClass))
classList.replace(this.activeThemeCssClass, cssClass)
else
classList.add(cssClass)
this.activeThemeCssClass = cssClass
}
toggleDarkness() {
this.setActiveTheme(this.activeTheme, !this.isThemeDark)
}
}And change the theme using setActiveTheme() (or toggleDarkness()) whenever you want. ✓
A more detailed instruction can be found here:
make-stylesheets() is the only thing in the API and gets a single parameter named $themes-map that was a map like what you saw in Basic Usage. You can see its documentation in the sources. But we bring the most important section of it here, that is the schema of each member (of the map):
css-class-name: (
primary-base: base-palette, // example: $mat-purple // will be ignored if you set corresponding mat-palette (primary). Set it to `null` in this case.
accent-base: base-palette, // example: $mat-green // will be ignored if you set corresponding mat-palette (accent). Set it to `null` in this case.
warn-base?: base-palette, // DEFAULT: $mat-red // will be ignored if you set corresponding mat-palette (warn). Set it to `null` in this case.
primary?: mat-palette, // DEFAULT: mat-palette(primary-base)
accent?: mat-palette, // DEFAULT: mat-palette(accent-base)
warn?: mat-palette, // DEFAULT: mat-palette(warn-base)
light-or-dark?: {'light' | 'dark' | ''}, // DEFAULT: '' => "Both light & dark"
),
Define themed-stylesheets() mixin before invoking make-stylesheets() with one important input: $mat-theme (that would be what you want):
/**
* // IMPORTANT NOTE: This mixin is just for other elements (non-material elements) that you want use material themes
* // for them. If you don't have such elements, simply remove this mixin.
*
* This is a *callback-mixin* and will be called in `make-stylesheets` with a argument ($mat-theme). The schema of this
* only argument would be:
* {
* primary: mat-palette,
* accent: mat-palette,
* warn: mat-palette,
* background: mat-theme-background,
* foreground: mat-theme-foreground,
* is-dark: boolean,
* }
*/
@mixin themed-stylesheets($mat-theme) {
// We only need "primary-color" and "accent-color" in this example. So commented out other (not-necessary)
// things. Uncomment each you need.
$primary: map-get($mat-theme, primary);
$accent: map-get($mat-theme, accent);
//$warn: map-get($mat-theme, warn);
//$background: map-get($mat-theme, background);
//$foreground: map-get($mat-theme, foreground);
$primary-color: mat-color($primary);
$accent-color: mat-color($accent);
//$warn-color: mat-color($warn);
//// Background colors:
//$status-bar-color: map-get($background, 'status-bar' );
//$app-bar-color: map-get($background, 'app-bar' );
//$background-color: map-get($background, 'background' );
//$hover-color: map-get($background, 'hover' );
//$card-color: map-get($background, 'card' );
//$dialog-color: map-get($background, 'dialog' );
//$disabled-button-color: map-get($background, 'disabled-button' );
//$raised-button-color: map-get($background, 'raised-button' );
//$focused-button-color: map-get($background, 'focused-button' );
//$selected-button-color: map-get($background, 'selected-button' );
//$selected-disabled-button-color: map-get($background, 'selected-disabled-button');
//$disabled-button-toggle-color: map-get($background, 'disabled-button-toggle' );
//$unselected-chip-color: map-get($background, 'unselected-chip' );
//$disabled-list-option-color: map-get($background, 'disabled-list-option' );
//// Foreground colors:
//$base-color: map-get($foreground, 'base' );
//$divider-color: map-get($foreground, 'divider' );
//$dividers-color: map-get($foreground, 'dividers' );
//$disabled-color: map-get($foreground, 'disabled' );
//$disabled-button-color: map-get($foreground, 'disabled-button' );
//$disabled-text-color: map-get($foreground, 'disabled-text' );
//$elevation-color: map-get($foreground, 'elevation' );
//$hint-text-color: map-get($foreground, 'hint-text' );
//$secondary-text-color: map-get($foreground, 'secondary-text' );
//$icon-color: map-get($foreground, 'icon' );
//$icons-color: map-get($foreground, 'icons' );
//$text-color: map-get($foreground, 'text' );
//$slider-min-color: map-get($foreground, 'slider-min' );
//$slider-off-color: map-get($foreground, 'slider-off' );
//$slider-off-active-color: map-get($foreground, 'slider-off-active');
//$is-dark: map-get($mat-theme, is-dark);
// Define themed-stylesheets here:
// Example themed-stylesheet:
.themed-element {
background: $primary-color;
color: $accent-color;
}
}https://github.com/mirismaili/AngularMaterialDynamicThemes
