postman-gpui Architecture Design

Tue, 25 Aug 2026 09:00:00 +0000

What Is GPUI

GUI stands for Graphical User Interface. GPUI is a Rust framework for building native graphical applications.

At a high level, GPUI can be understood as an event-driven system:

Event → Update State → Render

A simplified GUI event loop can be expressed as:

loop {
    event = wait_event();
    state = update(state, event);
    render(state);
}

The application waits for events such as mouse clicks, keyboard input, window resizing, timers, and asynchronous task results.