github emilk/egui 0.37.0
0.37.0 - Colored emojis! 🚀
on GitHub

4 hours ago


egui is an easy-to-use immediate mode GUI for Rust that runs on both web and native.

Try it now: https://www.egui.rs/

egui development is sponsored by Rerun, a startup building an SDK for visualizing streams of multimodal data.

Highlights ✨

Emoji and glyph support

egui can now render any glyph that is supported on your system, including colored emojis and non-Latin scripts.

To enable this, the integration has to use one of two APIs:

  • Context::add_glyph_rasterizer(GlyphRasterizer): a GlyphRasterizer renders a single glyph. eframe uses this on web to render individual glyphs to an off-screen canvas #8490, #8545.
  • Context::add_font_provider(Arc<dyn FontProvider>): lets egui find and load whole fonts at runtime. Native eframe uses this through the new egui_system_font_provider crate, which lists system fonts with fontique #8512.

Completion popup

We've added a new CompletionPopup widget that adds autocomplete to a TextEdit.
You can use it e.g. to add emoji selection like in discord:

Screen.Recording.2026-10-15.at.16.05.41.mov

Experimental theme customizations

This release adds a theme plugin system #8153 by @AdrienZianne. Enable the new experimental feature flag, and there will be a
new StyleProvider trait, which can be used to customize visuals for a widget based on the provided classes. 

/// Implement the trait for each Widget you'd like to customize
impl StyleProvider<ButtonStyle> for MyTheme {
  fn style(&mut self, args: &StyleArgs<'_>) -> ButtonStyle {
    // You could construct ButtonStyle from scratch, or extend eguis built in style:
    let mut style: ButtonStyle = DefaultStyle.style(args);
    if args.has_class("primary") {
      style.atom_layout.frame.fill = hex_color!("#FF0000");
    }
    style
  }
}

/// Register all your custom style providers
fn init(ctx: &Context) {
  ctx.add_widget_theme::<ButtonStyle>(MyTheme);
  ctx.add_widget_theme::<CheckboxStyle>(MyTheme);
  // ...
}

Record videos of integration tests

Reading an integration test to understand what its doing can be challenging, so we've added a egui_kittest/video
feature that records a mp4 video from it, using ffmpeg! Enable it and pass EGUI_KITTEST_RECORD=1 or EGUI_KITTEST_RECORD=open,
and a video of the test will be recorded. This is an example from one of our more complex rerun integration tests:

drop_stream_to_view__test_drop_multiple_streams_to_view_1.mp4

Improved accessibility

  • Better popup, menu, modal and panel trees #8581.

  • AccessKit support on panel resize handles #8578 by @YuEfSaEDU.

  • WidgetType is replaced with accesskit::Role (re-exported as egui::Role) #8555.

  • New Response::accessible_name, Ui::label_inputs_by / Ui::name_inputs, and Area::role #8604, #8608, #8612.

  • Invisible widgets are now hidden from the accessibility tree #8621.

  • Improved arrow key navigation within menus #8548 by @pederbe

    Screen.Recording.2026-10-15.at.15.29.08.mov

Other

  • Paste images from the clipboard: Event::PasteImage #8472 by @BernardDGS.
  • Aligned container, e.g. for centering a group of widgets #8540
  • CompletionPopup for code completion over a TextEdit #8529
  • RangeSlider #8580 by @gavrelina
  • Atoms: AtomLayout is split into WidgetAtom and ContainerAtom #8222.
  • Some style tweaks: roomier buttons and a larger corner radius #8617, #8445.
  • Nicer kinetic scrolling with rubber-banding on overshoot #8662, #8663

⚠️ Breaking changes

  • default_fonts is no longer a default feature #8583.
  • ViewportCommand::Screenshot now uses a callback #8489.
  • Id::new, AsId and From<&str> for Id are all deprecated #8534, #8586.
  • New: Id::unique, IdSaltSet, IdSaltMap #8534, #8590.
  • Panel constructors take impl AsIdSalt #8592.

⭐ Added

  • Add epaint::RoundedRect primitive #8440 by @emilk
  • Add BandShape #8476 by @emilk
  • Allow transforming after shapes were tessellated and rounded #8587 by @lucasmerlin
  • Add AtomLayoutStyle #8465 by @lucasmerlin
  • Add AtomKind::Paint #8524 by @lucasmerlin
  • StyleProvider for TextEdit and DragValue #8455 by @lucasmerlin
  • Add WidgetText::concat for joining differently styled RichTexts #8538 by @emilk
  • Add RichText::color_override to read the explicit text color #8564 by @pederbe
  • Add CollapsingHeader::custom for collapsing headers with a custom header UI #8549 by @Its-Just-Nans
  • Add MenuConfig::submenu_gap to override the hardcoded gap between a menu and its submenus #8338 by @kiwirm
  • Allow explicit popup sizing passes #8407 by @yay
  • Add Context::root_ui and Context::run_pass #8535 by @emilk
  • Add Context::set_repaint_observer #8644 by @syl20bnr
  • Add Plugin::on_exit #8527 by @lucasmerlin
  • Add Response::container_hovered, container_clicked, container_context_menu, etc #8537 by @emilk
  • Make Areas::set_state public #8645 by @syl20bnr
  • IdTypeMap: add iterator iter_temp_by_type (analogous to remove_by_type) #8672 by @the-maddin
  • Add Keys specific to Windows & Mac keyboards #8373 by @ans1ble
  • Add KeyboardShortcut::conflicts_with_text_editing #8536 by @emilk
  • Add MouseWheelSource and InputState::scroll_source() #8665 by @emilk
  • Add option scroll_zooms for mouse wheel to zoom instead of scroll inside a Scene container #7891 by @Tristan117
  • Add double-click-and-drag and triple-click-and-drag text selection #8370 by @mudbungie
  • Support AccessKit SetValue and ReplaceSelectedText in TextEdit #8701 by @Elitelord
  • Improve the fallback syntax highlighter in egui_extras #8708 by @emilk

🔧 Changed

  • Make Context::add_glyph_rasterizer idempotent #8600 by @emilk
  • Apply set_fonts/add_font right away when no font is loaded yet, or no text has been laid out this pass #8602, #8609 by @emilk
  • Name a Ui, Area, Popup or Tooltip in the accessibility tree #8607 by @emilk
  • Fail kittest tests when an input widget has no accessible name (read-only text fields are exempt) #8589, #8611 by @emilk
  • Clarify what Id to pass in accessibility_parent #8582 by @lucasmerlin
  • Bump accesskit{,_consumer,_winit} to latest versions #8496 by @alice
  • Rename Ui::id to Ui::scope_id and clarify its docstring #8542 by @emilk
  • Use Ui::unique_id for WidgetRect::parent_id #8543 by @emilk
  • Build ComboBox from atoms, and take impl IntoAtoms #8618 by @emilk
  • Round the corners of the color picker #8439 by @emilk
  • Deprecate global_theme_preference_switch in favor of global_theme_preference_buttons #8505 by @emilk
  • Feat: add more documentation on Image::texture_options #8357 by @Its-Just-Nans
  • Support the X11/Wayland PRIMARY selection #8428 by @hallyhaa
  • Make DroppedFile::web_file (and its web-sys dependency) opt-in #8669 by @DouglasDwyer
  • Keep egui::Context Send + Sync with wasm threads #8638 by @teolines
  • Enable clippy::std_instead_of_alloc in core egui crates #8702 by @emilk

🔥 Removed

  • Remove the Font borrow-bag; put its methods on FontsImpl #8504 by @emilk
  • Remove the AsId trait #8584 by @emilk

🐛 Fixed

  • Fix changing widget IDs and false-positive ID change warnings across passes #8316 by @vlansco
  • Warn again when automatic widget IDs shift between passes #8670 by @emilk
  • Ensure nested AtomLayouts have unique ids #8556 by @lucasmerlin
  • Remove unfocusable widgets from the widget cache #8653 by @ori-sky
  • Fix AccessKit ScrollIntoView for a Ui with UiBuilder::sense #8646 by @GavinPizza
  • Fix popups immediately closing on mouse button release #7624 by @vladbat00
  • Show menu without a click if another menu is open #7802 by @mkeeter
  • Respect the menu style config in sub menus #8572 by @lucasmerlin
  • Paint SubMenuButton arrow as a triangle instead of a glyph #8525 by @lucasmerlin
  • Show tooltips of container responses when hovering their children #7909 by @optozorax
  • Enable mouse wheel scrolling while dragging inside a ScrollArea #7919 by @rustbasic
  • Fix #8495: Match scrollbar interaction rect to drawn bar rect (remove dead zone) #8635 by @dajiaohuang
  • Fix scroll modifiers getting stuck when TouchPhase::End never arrives #8636 by @SulimanAbdulrazzaq
  • Fix NaN panic in Scene with zero scene_rect and unbounded zoom #8622 by @emilk
  • Fix: Panel/Scene clip rect should respect parent #8562 by @DouglasDwyer
  • Fix : an issue where double-clicks were judged as triple-clicks #7915 by @rustbasic
  • Fix TextEdit layout shift with custom margin; unclipped TextEdit grows to fit text #8628 by @emilk
  • Fix: TextFormat::valign not applied correctly with custom line_height #8030 by @rustbasic
  • Don't start a CJK row with full-width closing punctuation #8658 by @Zaneris
  • Fix DragValue reporting changes while typing with update_while_editing(false) #8627 by @SulimanAbdulrazzaq
  • Fix color picker RGB drift when editing alpha #8483 by @ishuowang
  • Preserve drop-zone frame styling when idle #8633 by @pederbe
  • Keep a Window's position after a restart #8637 by @teolines
  • Fix burst of extra repaints before request_repaint_after deadlines #8595 by @xmakro
  • Preserve safe area insets when appending input #8484 by @ishuowang

🚀 Performance

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