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Learn how to effectively customize your components in Angular Material by handling multiple themes, ensuring your app looks great in both light and dark modes.
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How to Theme Your Own Components with Angular Material: Managing Multiple Themes Effectively

Introduction to Theming in Angular Material

When developing applications with Angular Material, one of the key aspects is customizing the appearance of your components to match your brand or design requirements. This often includes switching between light and dark themes. However, you might encounter issues when trying to change component styles based on the active theme, such as keeping colors fixed regardless of the selected theme.

In this post, we’ll focus on how to properly manage and theme your components in Angular Material, allowing for dynamic style changes when switching between light and dark modes.

The Problem: Fixed Colors in Light and Dark Themes

The major challenge at hand is ensuring that your component colors adapt when users switch from one theme to another.

Example Scenario

Let’s take a look at a simple example where we want a component that changes its primary color based on the active theme. Initially, you may find that the color of your components remains static, which doesn’t fulfill the need for responsiveness to theme changes.

Solution: Custom Theming for Angular Components

To effectively theme your Angular Material components with responsive colors, follow these structured steps:

1. Defining Themes in SCSS

You should start by defining your themes within a separate SCSS file, not directly within your component styles. Create a theme.scss file that imports Angular Material's theming, uses the mat-core, and defines both light and dark themes.

Here is how to structure your theming:

[[See Video to Reveal this Text or Code Snippet]]

2. Creating a Mixin for Your Component

Next, create a custom mixin that will allow your component to adapt its style based on the currently active theme. Here’s an updated version of your mixin, ensuring it pulls the necessary theme colors from background:

[[See Video to Reveal this Text or Code Snippet]]

3. Applying the Theme Classes

Next, apply these themes and your custom component mixin in your SCSS file:

[[See Video to Reveal this Text or Code Snippet]]

4. Accessing Theme Variables

You can also access various theme properties like $primary, $accent, etc., to further customize how your components appear in different themes:

[[See Video to Reveal this Text or Code Snippet]]

This allows flexibility in defining colors throughout your component styles based on the active theme.

Conclusion

By defining themes in a centralized SCSS file and using them to inform component styles dynamically, you can create a fluid user experience that respects the user's theme choice. Ensure that the mixins you create encapsulate this logic, allowing you to leverage Angular Material's powerful theming capabilities to their fullest.

Key Takeaways

Always define your themes in a dedicated SCSS file.

Use mixins to customize component styles based on active themes.

Access theme colors dynamically within your component for greater flexibility.

With these techniques, you can take full control of theming in your Angular applications and create a visually engaging experience for your users, whether they prefer light or dark modes.