egui Drag Values: Speed, Range & Formatting | Rust GUI Ep 20

Build a Transform Editor with draggable number controls in egui! Learn DragValue::new() with speed, range, suffix, and prefix formatting. We also add interactive canvas dragging for position, rotation, and scale. Student code: https://github.com/GoCelesteAI/egui_drag_values/tree/main What You'll Learn: - egui::DragValue::new() for draggable number inputs - .speed() to control drag sensitivity - .range() to clamp values within bounds - .suffix("°") and .prefix("x") for formatted display - Sense::click_and_drag() for canvas interaction - response.dragged_by() for primary and secondary button detection - smooth_scroll_delta for scroll-based scaling - egui::Rgba for linear-to-sRGB color conversion - Neo-tree / to filter the file tree Timestamps: 0:00 Intro 0:12 App Preview 0:22 What We're Building 0:54 Create Project & Cargo.toml 1:26 main.rs — App Entry Point 2:04 app.rs — MyApp Struct & Default 3:04 SidePanel with DragValue Controls 5:12 Color Picker & Reset Button 5:54 CentralPanel — Canvas with Drag Interactions 7:12 Drawing the Rotated Rectangle 8:48 cargo build 9:08 Neo-tree Filter & Split View 9:28 App Demo 10:28 Recap 11:08 Next Episode Series: Learn egui in Neovim Part of a 36-episode series teaching Rust GUI development with egui, coded entirely in Neovim with Neo-tree. Tags: egui, rust, gui, drag value, tutorial, neovim, transform editor, dragvalue, speed, range, suffix, prefix