gui
Here's some of what people around the Joshternet have been publishing about this subject. Different websites, different perspectives, and a few more places to explore.
josh.earth (opens on the publisher’s site)
josh.earth
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Embedded GUI Toolkit — A reusable UI toolkit for ESP32-based embedded devices written in Rust. Features dirty-rect rendering to avoid overdraw on slow SPI displays, a scene graph that works with Rust's ownership model, and a small set of primitive widgets. See the embedded Rust series on the blog for details.