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michalsustr
egui-cursor
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download_scripts
download_scripts
examples
examples
src
src
.gitignore
.gitignore
Cargo.lock
Cargo.lock
Cargo.toml
Cargo.toml
LICENSE
LICENSE
README.md
README.md
demo.gif
demo.gif
demo.mp4
demo.mp4
download_all_assets.sh
download_all_assets.sh
index.html
index.html
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egui-cursor
egui-cursor is a small crate + demo app for drawing themed cursors inside an<br>eframe/egui app, so app visuals and cursor position stay in sync.
Inspired by https://x.com/rsms/status/2067139891264409851 and https://tonsky.me/blog/every-frame-perfect/
Why
On some systems, the OS cursor and app content can appear slightly out of sync<br>in high-speed motion. This crate paints the cursor in egui itself, so cursor and<br>scene are composited on the same path.
Drawbacks . Because the cursor is rendered by your app, you need to keep app render time<br>low. If frame time spikes, cursor responsiveness will also degrade.
Video downsampled to 1 FPS. Original
Assets
Important : this crate does not bundle cursor assets by default. The non-system<br>theme features are optional and intended for setups that provide/generated<br>assets themselves. This is also why this crate is not published on crates.io yet.<br>If you know how to do this well, please let me know in the issues.
Contributions welcome
Contributions are welcome, especially for:
adding new cursor themes,
improving cursor resolution/quality across themes,
support for animated cursors.
Themes
Currently supported:
System (use OS cursor, no custom painting)
Aosp (generated from AOSP vectors, supersampled)
OpenZone* variants:
OpenZoneBlack
OpenZoneBlackSlim
OpenZoneWhite
OpenZoneWhiteSlim
OpenZoneIce
OpenZoneIceSlim
OpenZoneFire
OpenZoneFireSlim
Cargo Features
From Cargo.toml:
cursor-theme-aosp
cursor-theme-openzone
cursor-theme-all (enables both above)
Default features enable no custom themes.
Using in your app
Minimal integration pattern:
Call set_cursor_theme_with_scale(...) when theme/scale changes.
Keep your normal egui cursor icon logic (ctx.set_cursor_icon(...)).
Call paint_cursor(ctx) at the very end of eframe::App::update.
The demo in examples/demo.rs shows this pattern.
Asset Download / Generation
Assets are generated by scripts in download_scripts:
download_scripts/download_openzone.py
download_scripts/download_aosp.py
download_all_assets.sh (runs both)
Run:
bash ./download_all_assets.sh
Script system dependencies
git
xcursorgen
convert (ImageMagick)
python3
Development
Native
cargo run --bin demo --features cursor-theme-all --release
Web (WASM)
trunk serve --port 8000 --release --features cursor-theme-all
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Resources
Readme
License
MIT license
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Languages
Python<br>51.0%
Rust<br>46.6%
HTML<br>1.5%
Shell<br>0.9%
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