Adwaita

Adwaita (Libadwaita or Adw) is a set of widgets and classes that extend the GTK toolkit, the default UI toolkit for GNOME. It’s designed to implement GNOME’s design patterns, as outlined in the GNOME Human Interface Guidelines (HIG). The HIG provides recommendations for creating consistent, intuitive, and accessible user interfaces across GNOME applications.

Adwaita offers a range of HIG-compliant widgets, including buttons, switches, and dialogs, that give applications a consistent and modern GNOME look. It supports high-resolution displays, with scalable icons for clarity on various screen sizes.

In addition to widgets, Adwaita includes CSS stylesheets that define their visual appearance, offering a flexible way to customize styling while following GNOME’s guidelines. Adwaita also supports dark mode, which can be toggled system-wide or on a per-application basis.

Overall, Adwaita is crucial for GNOME, providing a cohesive, modern look that aligns with the GNOME HIG. With support for high-resolution displays and dark mode, it’s a versatile toolkit for building modern, user-friendly desktop applications.