Add iOS support via egui-ios crate #7768
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This PR adds iOS support to egui through a new `egui-ios` crate that provides Swift FFI bindings via swift-bridge. ## New Crate: egui-ios The `egui-ios` crate provides Swift-compatible types for embedding egui in iOS apps: - `InputEvent` - Touch, keyboard, and lifecycle events from Swift to egui - `OutputState` - Cursor, keyboard, and IME state from egui to Swift - `CursorIcon` - Cursor icons mapped to iOS equivalents ### Features - Native text input support with IME/autocomplete - Scene lifecycle callbacks (background/inactive/active) - Virtual key handling (backspace, enter, arrows, etc.) - Keyboard visibility and IME rect tracking ### Minimum iOS Version: 13.0 ## Changes - Add `egui-ios` crate with Swift FFI bindings - Add `xtask bundle-ios` command for building iOS app bundles - Add iOS to eframe platform list in README - Add egui-ios to workspace ## Known Limitations - Clipboard: arboard doesn't support iOS yet, apps should implement via UIPasteboard - Safe area: Uses objc2 bridge until winit 0.31+ adds native support Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Preview is being built... Preview will be available at https://egui-pr-preview.github.io/pr/7768-ios-support View snapshot changes at kitdiff |
Author
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using this approach, managed to get egui notedeck running on iOS https://github.com/alltheseas/notedeck-iOS/ 
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Author
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Received feedback from @jb55 on memory:
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Summary
This PR adds iOS support to egui through a new
egui-ioscrate that provides Swift FFI bindings via swift-bridge.New Crate: egui-ios
The
egui-ioscrate provides Swift-compatible types for embedding egui in iOS apps:InputEvent- Touch, keyboard, and lifecycle events from Swift to eguiOutputState- Cursor, keyboard, and IME state from egui to SwiftCursorIcon- Cursor icons mapped to iOS equivalentsFeatures
Minimum iOS Version: 13.0
Changes
egui-ioscrate with Swift FFI bindings (369 lines of Rust)xtask bundle-ioscommand for building iOS app bundlesFiles Added/Modified
crates/egui-ios/xtask/src/ios.rsxtask/src/main.rsCargo.tomlREADME.mdCHANGELOG.mdKnown Limitations
arboardcrate doesn't support iOS yet, so apps should implement clipboard viaUIPasteboardin SwiftIntegration Example
A typical SwiftUI integration involves:
MTKViewfor Metal renderingInputEvent::from_*methodsOutputStatefor keyboard/IME stateUITextFieldoverlay for text input with autocomplete/autocorrectTest Plan
aarch64-apple-iostargetaarch64-apple-ios-simtargetcargo xtask bundle-ioscreates valid .app bundle🤖 Generated with Claude Code