A Developer's Guide to Angular's Material Design Library

angular/components

@angular/components is the official package containing Angular's Material Design components. Think of it as a comprehensive toolkit for building high-quality, professional-looking user interfaces (UIs) in your Angular applications. Instead of building every UI element like buttons, forms, or navigation menus from scratch, you can use these pre-built, well-tested, and accessible components.

From a software engineer's perspective, this library is a huge time-saver. It offers

Consistency
All components follow the Material Design guidelines, which ensures your app has a uniform and polished look and feel. This makes it easier to create beautiful UIs without needing a dedicated UI/UX designer.

Accessibility
The components are built with accessibility in mind. They follow best practices for screen readers, keyboard navigation, and contrast, which is crucial for making your application usable by everyone.

Responsiveness
The components are designed to work well on various screen sizes, from desktops to mobile phones, without extra effort.

Efficiency
Using pre-built components significantly speeds up development. You're not reinventing the wheel for common UI elements, allowing you to focus on your app's core business logic.

Basically, it's like having a box of high-quality LEGO blocks specifically designed to fit together perfectly, helping you build complex structures much faster.

Getting the Angular Material components into your project is super easy thanks to the Angular CLI.

You can add the library using the following command in your terminal. This command will also ask you to pick a pre-built theme, set up typography, and include some useful animations.

ng add @angular/material

Angular's design is modular. This means you only import the components you plan to use, which helps keep your application's bundle size small. For example, if you need a button and a card, you'll import MatButtonModule and MatCardModule into your app.module.ts or the module where you'll be using them.

// src/app/app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

import { MatButtonModule } from '@angular/material/button';
import { MatCardModule } from '@angular/material/card';

import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    MatButtonModule, // <-- Import the button module
    MatCardModule   // <-- Import the card module
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Don't forget to import BrowserAnimationsModule as many Material components rely on animations for a smooth user experience.

Let's see how easy it is to use these components in your templates.

Instead of a generic <button>, you'll use the Material Design button with a directive.

HTML

<button mat-button color="primary">Click Me</button>
<button mat-raised-button color="accent">Learn More</button>

The mat-button and mat-raised-button directives apply the Material Design styles. The color attribute sets the color based on your chosen theme (e.g., primary, accent, or warn).

Cards are a popular way to group related content. The Material card component makes this very simple.

HTML

<mat-card>
  <mat-card-header>
    <mat-card-title>My Awesome Card</mat-card-title>
    <mat-card-subtitle>A subtitle for my card</mat-card-subtitle>
  </mat-card-header>
  <mat-card-content>
    <p>This is the content of my Material card. It can contain text, images, or other components.</p>
  </mat-card-content>
  <mat-card-actions>
    <button mat-button>LIKE</button>
    <button mat-button>SHARE</button>
  </mat-card-actions>
</mat-card>

As you can see, you use specific tags like <mat-card>, <mat-card-title>, and <mat-card-content> to structure the card. This makes your template code cleaner and more semantic.

Building a form is a common task. Material provides powerful form controls.

HTML

<mat-form-field appearance="fill">
  <mat-label>Enter your name</mat-label>
  <input matInput placeholder="e.g. John Doe">
</mat-form-field>

This simple block gives you a visually appealing input field with a floating label. You don't have to write any CSS for it!