All notable changes to the egui crate will be documented in this file.

NOTE: epaint, eframe, egui-winit, egui_glium, egui_glow and egui-wgpu have their own changelogs!

• ⚠️ BREAKING: egui::Context now use closures for locking (#2625):
  • ctx.input().key_pressed(Key::A) -> ctx.input(|i| i.key_pressed(Key::A))
  • ui.memory().toggle_popup(popup_id) -> ui.memory_mut(|mem| mem.toggle_popup(popup_id))

• Add Response::drag_started_by and Response::drag_released_by for convenience, similar to dragged and dragged_by (#2507).
• Add PointerState::*_pressed to check if the given button was pressed in this frame (#2507).
• Event::Key now has a repeat field that is set to true if the event was the result of a key-repeat (#2435).
• Add Slider::drag_value_speed, which lets you ask for finer precision when dragging the slider value rather than the actual slider.
• Add Memory::any_popup_open, which returns true if any popup is currently open (#2464).
• Add Plot::clamp_grid to only show grid where there is data (#2480).
• Add ScrollArea::drag_to_scroll if you want to turn off that feature.
• Add Response::on_hover_and_drag_cursor.
• Add Window::default_open (#2539).
• Add ProgressBar::fill if you want to set the fill color manually. (#2618).
• Add Button::rounding to enable round buttons (#2616).
• Add WidgetVisuals::optional_bg_color - set it to Color32::TRANSPARENT to hide button backgrounds (#2621).
• Add Context::screen_rect and Context::set_cursor_icon (#2625).
• You can turn off the vertical line left of indented regions with Visuals::indent_has_left_vline (#2636).
• Add Response.highlight to highlight a widget (#2632).
• Add Separator::grow and Separator::shrink (#2665).
• Add Slider::trailing_fill for trailing color behind the circle like a ProgressBar (#2660).

• Improved plot grid appearance (#2412).
• Improved the algorithm for picking the number of decimals to show when hovering values in the Plot.
• Default ComboBox is now controlled with Spacing::combo_width (#2621).
• DragValue and Slider now use the proportional font (#2638).
• ScrollArea is less aggressive about clipping its contents (#2665).
• Updated to be compatible with a major breaking change in AccessKit that drastically reduces memory usage when accessibility is enabled (#2678).
• Improve DragValue behavior (#2649, #2650, #2688, #2638).

• Trigger PointerEvent::Released for drags (#2507).
• Expose TextEdit's multiline flag to AccessKit (#2448).
• Don't render \r (Carriage Return) (#2452).
• The button_padding style option works closer as expected with image+text buttons now (#2510).
• Menus are now moved to fit on the screen.
• Fix Window::pivot causing windows to move around (#2694).

• InputState: all press functions again include key repeats (like in egui 0.19) (#2429).
• Improve the look of thin white lines (#2437).

• Fix key-repeats for TextEdit, Sliders, etc (#2429).

• MSRV (Minimum Supported Rust Version) is now 1.65.0 (#2314).
• ⚠️ BREAKING: egui now expects integrations to do all color blending in gamma space (#2071).
• ⚠️ BREAKING: if you have overlapping interactive widgets, only the top widget (last added) will be interactive (#2244).

• Added helper functions for animating panels that collapse/expand (#2190).
• Added Context::os/Context::set_os to query/set what operating system egui believes it is running on (#2202).
• Added Button::shortcut_text for showing keyboard shortcuts in menu buttons (#2202).
• Added egui::KeyboardShortcut for showing keyboard shortcuts in menu buttons (#2202).
• Texture loading now takes a TexureOptions with minification and magnification filters (#2224).
• Added Key::Minus and Key::Equals (#2239).
• Added egui::gui_zoom module with helpers for scaling the whole GUI of an app (#2239).
• You can now put one interactive widget on top of another, and only one will get interaction at a time (#2244).
• Added spacing.menu_margin for customizing menu spacing (#2036)
• Added possibility to enable text wrap for the selected text of egui::ComboBox (#2272)
• Added Area::constrain and Window::constrain which constrains area to the screen bounds (#2270).
• Added Area::pivot and Window::pivot which controls what part of the window to position (#2303).
• Added support for thin space.
• Added optional integration with AccessKit for implementing platform accessibility APIs (#2294).
• Added panel_fill, window_fill and window_stroke to Visuals for your theming pleasure (#2406).
• Plots:
  • Allow linking plot cursors (#1722).
  • Added Plot::auto_bounds_x/y and Plot::reset (#2029).
  • Added PlotUi::translate_bounds (#2145).
  • Added PlotUi::set_plot_bounds (#2320).
  • Added PlotUi::plot_secondary_clicked (#2318).

• Panels always have a separator line, but no stroke on other sides. Their spacing has also changed slightly (#2261).
• Tooltips are only shown when mouse pointer is still (#2263).
• Make it slightly easier to click buttons (#2304).
• egui::color has been renamed egui::ecolor (#2399).

• ⚠️ BREAKING: Fix text being too small (#2069).
• Improve mixed CJK/Latin line-breaking (#1986).
• Improved text rendering (#2071).
• Constrain menu popups to the screen (#2191).
• Less jitter when calling Context::set_pixels_per_point (#2239).
• Fixed popups and color edit going outside the screen.
• Fixed keyboard support in DragValue (#2342).
• If you nest ScrollAreas inside each other, the inner area will now move its scroll bar so it is always visible (#2371).
• Ignore key-repeats for input.key_pressed (#2334, #2389).
• Fixed issue with calling set_pixels_per_point each frame (#2352).
• Fix bug in ScrollArea::show_rows (#2258).
• Fix bug in plot::Line::fill (#2275).
• Only emit changed events in radio_value and selectable_value if the value actually changed (#2343).
• Fixed sizing bug in Grid (#2384).
• ComboBox::width now correctly sets the outer width (#2406).

• Added *_released & *_clicked methods for PointerState (#1582).
• Added PointerButton::Extra1 and PointerButton::Extra2 (#1592).
• Added egui::hex_color! to create Color32's from hex strings under the color-hex feature (#1596).
• Optimized painting of filled circles (e.g. for scatter plots) by 10x or more (#1616).
• Added opt-in feature deadlock_detection to detect double-lock of mutexes on the same thread (#1619).
• Added InputState::stable_dt: a more stable estimate for the delta-time in reactive mode (#1625).
• You can now specify a texture filter for your textures (#1636).
• Added functions keys in egui::Key (#1665).
• Added support for using PaintCallback shapes with the WGPU backend (#1684).
• Added Context::request_repaint_after (#1694).
• ctrl-h now acts like backspace in TextEdit (#1812).
• Added custom_formatter method for Slider and DragValue (#1851).
• Added RawInput::has_focus which backends can set to indicate whether the UI as a whole has the keyboard focus (#1859).
• Added PointerState::button_double_clicked() and PointerState::button_triple_clicked() (#1906).
• Added custom_formatter, binary, octal, and hexadecimal to DragValue and Slider (#1953)

• MSRV (Minimum Supported Rust Version) is now 1.61.0 (#1846).
• PaintCallback shapes now require the whole callback to be put in an Arc<dyn Any> with the value being a backend-specific callback type (#1684).
• Replaced needs_repaint in FullOutput with repaint_after. Used to force repaint after the set duration in reactive mode (#1694).
• Layout::left_to_right and Layout::right_to_left now takes the vertical align as an argument. Previous default was Align::Center.
• Improved ergonomics of adding plot items. All plot items that take a series of 2D coordinates can now be created directly from Vec<[f64; 2]>. The Value and Values types were removed in favor of PlotPoint and PlotPoints respectively (#1816).
• TextBuffer no longer needs to implement AsRef<str> (#1824).

• Fixed Response::changed for ui.toggle_value (#1573).
• Fixed ImageButton's changing background padding on hover (#1595).
• Fixed Plot auto-bounds bug (#1599).
• Fixed dead-lock when alt-tabbing while also showing a tooltip (#1618).
• Fixed ScrollArea scrolling when editing an unrelated TextEdit (#1779).
• Fixed Slider not always generating events on change (#1854).
• Fixed jitter of anchored windows for the first frame (#1856).
• Fixed focus behavior when pressing Tab in a UI with no focused widget (#1861).
• Fixed automatic plot bounds (#1865).

• Change Shape::Callback from &dyn Any to &mut dyn Any to support more backends.

• Added Shape::Callback for backend-specific painting, with an example (#1351).
• Added Frame::canvas (#1362).
• Context::request_repaint will now wake up UI thread, if integrations has called Context::set_request_repaint_callback (#1366).
• Added Plot::allow_scroll, Plot::allow_zoom no longer affects scrolling (#1382).
• Added Ui::push_id to resolve id clashes (#1374).
• Added ComboBox::icon (#1405).
• Added Ui::scroll_with_delta.
• Added Frame::outer_margin.
• Added Painter::hline and Painter::vline.
• Added Link and ui.link (#1506).
• Added triple-click support; triple-clicking a TextEdit field will select the whole paragraph (#1512).
• Added Plot::x_grid_spacer and Plot::y_grid_spacer for custom grid spacing (#1180).
• Added Ui::spinner() shortcut method (#1494).
• Added CursorIcons for resizing columns, rows, and the eight cardinal directions.
• Added Ui::toggle_value.
• Added ability to add any widgets to the header of a collapsing region (#1538).

• MSRV (Minimum Supported Rust Version) is now 1.60.0 (#1467).
• ClippedMesh has been replaced with ClippedPrimitive (#1351).
• Renamed Frame::margin to Frame::inner_margin.
• Renamed AlphaImage to FontImage to discourage any other use for it (#1412).
• Warnings will be painted on screen when there is an Id clash for Grid, Plot or ScrollArea (#1452).
• Checkbox and RadioButton with an empty label ("") will now take up much less space (#1456).
• Replaced Memory::top_most_layer with more flexible Memory::layer_ids.
• Renamed the feature convert_bytemuck to bytemuck (#1467).
• Renamed the feature serialize to serde (#1467).
• Renamed Painter::sub_region to Painter::with_clip_rect.

• Fixed ComboBoxes always being rendered left-aligned (#1304).
• Fixed ui code that could lead to a deadlock (#1380).
• Text is darker and more readable in bright mode (#1412).
• Fixed a lot of broken/missing doclinks (#1419).
• Fixed Ui::add_visible sometimes leaving the Ui in a disabled state (#1436).
• Added line breaking rules for Japanese text (#1498).

• Deprecated CollapsingHeader::selectable (#1538).

• Removed the single_threaded/multi_threaded flags - egui is now always thread-safe (#1390).

• 4JX
• AlexxxRu
• ascclemens
• awaken1ng
• bigfarts
• bobyclaws
• Bromeon
• cloudhead
• collin-kemper
• cpterry
• dbuch
• DusterTheFirst
• Edgeworth
• elwerene
• follower
• Friz64
• Hunter522
• Jake-Shadle
• jean-airoldie
• JelNiSlaw
• juancampa
• LU15W1R7H
• mbillingr
• nicklasmoeller
• rukai
• tami5
• Titaniumtown
• trevyn
• waynr
• zam-5

• Much improved font selection (#1154):
  • You can now select any font size and family using RichText::size amd RichText::family and the new FontId.
  • Easily change text styles with Style::text_styles.
  • Added Ui::text_style_height.
  • Added TextStyle::resolve.
  • Made the v-align and scale of user fonts tweakable (#1241).
• Plot:
  • Added Plot::x_axis_formatter and Plot::y_axis_formatter for custom axis labels (#1130).
  • Added Plot::allow_boxed_zoom(), Plot::boxed_zoom_pointer() for boxed zooming on plots (#1188).
  • Added plot pointer coordinates with Plot::coordinates_formatter (#1235).
  • Added linked axis support for plots via plot::LinkedAxisGroup (#1184).
• Context::load_texture to convert an image into a texture which can be displayed using e.g. ui.image(texture, size) (#1110).
• Ui::input_mut to modify how subsequent widgets see the InputState and a convenience method InputState::consume_key for shortcuts or hotkeys (#1212).
• Added Ui::add_visible and Ui::add_visible_ui.
• Added CollapsingHeader::icon to override the default open/close icon using a custom function. (1147).
• Added ui.data(), ctx.data(), ctx.options() and ctx.tessellation_options() (#1175).
• Added Response::on_hover_text_at_pointer as a convenience akin to Response::on_hover_text (1179).
• Opt-in dependency on tracing crate for logging warnings (#1192).
• Added ui.weak(text).
• Added Slider::step_by (1225).
• Added Context::move_to_top and Context::top_most_layer for managing the layer on the top (#1242).
• Support a subset of macOS' emacs input field keybindings in TextEdit (#1243).
• Added ability to scroll an UI into view without specifying an alignment (1247).
• Added Ui::scroll_to_rect (1252).

• ⚠️ Context::input and Ui::input now locks a mutex. This can lead to a dead-lock is used in an if let binding!
  • if let Some(pos) = ui.input().pointer.latest_pos() and similar must now be rewritten on two lines.
  • Search for this problem in your code using the regex if let .*input.
• Better contrast in the default light mode style (#1238).
• Renamed CtxRef to Context (#1050).
• Context can now be cloned and stored between frames (#1050).
• Renamed Ui::visible to Ui::is_visible.
• Split Event::Text into Event::Text and Event::Paste (#1058).
• Replaced Style::body_text_style with more generic Style::text_styles (#1154).
• TextStyle is no longer Copy (#1154).
• Replaced TextEdit::text_style with TextEdit::font (#1154).
• Plot::highlight now takes a bool argument (#1159).
• ScrollArea::show now returns a ScrollAreaOutput, so you might need to add .inner after the call to it (#1166).
• Replaced corner_radius: f32 with rounding: Rounding, allowing per-corner rounding settings (#1206).
• Replaced Frame's margin: Vec2 with margin: Margin, allowing for different margins on opposing sides (#1219).
• Renamed Plot::custom_label_func to Plot::label_formatter (#1235).
• Areas::layer_id_at ignores non-interatable layers (i.e. Tooltips) (#1240).
• ScrollAreas will not shrink below a certain minimum size, set by min_scrolled_width/min_scrolled_height (1255).
• For integrations:
  • Output has now been renamed PlatformOutput and Context::run now returns the new FullOutput (#1292).
  • FontImage has been replaced by TexturesDelta (found in FullOutput), describing what textures were loaded and freed each frame (#1110).
  • The painter must support partial texture updates (#1149).
  • Added RawInput::max_texture_side which should be filled in with e.g. GL_MAX_TEXTURE_SIZE (#1154).

• Plot Orientation was not public, although fields using this type were (#1130).
• Context menus now respects the theme (#1043).
• Calling Context::set_pixels_per_point before the first frame will now work.
• Tooltips that don't fit the window don't flicker anymore (#1240).
• Scroll areas now follow text cursor (#1252).
• Slider: correctly respond with drag and focus events when interacting with the value directly (1270).

• 4JX
• 55nknown
• AlanRace
• AlexxxRu
• awaken1ng
• BctfN0HUK7Yg
• Bromeon
• cat-state
• danielkeller
• dvec
• Friz64
• Gordon01
• HackerFoo
• juancampa
• justinj
• lampsitter
• LordMZTE
• manuel-i
• Mingun
• niklaskorz
• nongiach
• parasyte
• psiphi75
• s-nie
• t18b219k
• terhechte
• xudesheng
• yusdacra

• Added back CtxRef::begin_frame,end_frame as an alternative to CtxRef::run.

• Added context menus: See Ui::menu_button and Response::context_menu (#543).
• Most widgets containing text (Label, Button etc) now supports rich text (#855).
• Plots:
  • Added bar charts and box plots (#863).
  • You can now query information about the plot (e.g. get the mouse position in plot coordinates, or the plot bounds) while adding items. Plot (#766 and #892).
• You can now read and write the cursor of a TextEdit (#848).
• When using a custom font you can now specify a font index (#873).
• Added vertical sliders with Slider::new(…).vertical() (#875).
• Added Button::image_and_text (#832).
• Added CollapsingHeader::open to control if it is open or collapsed (#1006).
• Added egui::widgets::color_picker::color_picker_color32 to show the color picker.

• MSRV (Minimum Supported Rust Version) is now 1.56.0.
• ui.add(Button::new("…").text_color(…)) is now ui.button(RichText::new("…").color(…)) (same for Label )(#855).
• Plots now provide a show method that has to be used to add items to and show the plot (#766).
• menu::menu(ui, ...) is now ui.menu_button(...) (#543)
• Replaced CtxRef::begin_frame and end_frame with CtxRef::run (#872).
• Replaced scroll_delta and zoom_delta in RawInput with Event::Scroll and Event::Zoom.
• Unified the four Memory data buckets (data, data_temp, id_data and id_data_temp) into a single Memory::data, with a new interface (#836).
• Replaced Ui::__test with egui::__run_test_ui (#872).

• Fixed ComboBox and other popups getting clipped to parent window (#885).
• The color picker is now better at keeping the same hue even when saturation goes to zero (#886).

• Removed egui::math (use egui::emath instead).
• Removed egui::paint (use egui::epaint instead).

• 5225225: #849.
• aevyrie: #966.
• B-Reif: #875.
• Bromeon: #863, #918.
• d10sfan: #832.
• EmbersArc: #766, #892.
• Hperigo: #905.
• isegal: #934.
• mankinskin: #543.
• niladic: #499, #863.
• singalen: #973.
• sumibi-yakitori: #830, #870.
• t18b219k: #868, #888.

• Added horizontal scrolling support to ScrollArea and Window (opt-in).
• TextEdit::layouter: Add custom text layout for e.g. syntax highlighting or WYSIWYG.
• Fonts::layout_job: New text layout engine allowing mixing fonts, colors and styles, with underlining and strikethrough.
• Added ui.add_enabled(bool, widget) to easily add a possibly disabled widget.
• Added ui.add_enabled_ui(bool, |ui| …) to create a possibly disabled UI section.
• Added feature "serialize" separatedly from "persistence".
• Added egui::widgets::global_dark_light_mode_buttons to easily add buttons for switching the egui theme.
• TextEdit can now be used to show text which can be selected and copied, but not edited.
• Added Memory::caches for caching things from one frame to the next.

• Change the default monospace font to Hack.
• Label text will now be centered, right-aligned and/or justified based on the layout of the Ui it is in.
• Hyperlink will now word-wrap just like a Label.
• All Uis must now have a finite max_rect.
  • Deprecated: max_rect_finite, available_size_before_wrap_finite and available_rect_before_wrap_finite.
• Painter/Fonts: text layout now expect a color when creating a Galley. You may override that color with Painter::galley_with_color.
• MSRV (Minimum Supported Rust Version) is now 1.54.0.
• By default, DragValues no longer show a tooltip when hovered. Change with Style::explanation_tooltips.
• Smaller and nicer color picker.
• ScrollArea will auto-shrink to content size unless told otherwise using ScollArea::auto_shrink.
• By default, Slider's clamp_to_range is set to true.
• Renamed TextEdit::enabled to TextEdit::interactive.
• ui.label (and friends) now take impl ToString as argument instead of impl Into<Label>.

• Fixed wrongly sized multiline TextEdit in justified layouts.
• Fixed clip rectangle of windows that don't fit the central area.
• Show tooltips above widgets on touch screens.
• Fixed popups sometimes getting clipped by panels.

• Replace Button::enabled with ui.add_enabled.

• AlexApps99
• baysmith
• bpostlethwaite
• cwfitzgerald
• DrOptix
• JerzySpendel
• NiceneNerd
• parasyte
• spersson
• Stock84-dev
• sumibi-yakitori
• t18b219k
• TobTobXX
• zu1k

• Fixed window resize bug introduced in 0.14.1.

• Added Ui::horizontal_top.

• Fixed set_width/set_min_width/set_height/set_min_height/expand_to_include_x/expand_to_include_y.
• Make minimum grid column width propagate properly.
• Make sure TextEdit contents expand to fill width if applicable.
• ProgressBar: add a minimum width and fix for having it in an infinite layout.
• Fixed sometimes not being able to click inside a combo box or popup menu.

• Panels can now be added to any Ui.
• Plot:
  • Line styles.
  • Added show_background and show_axes methods to Plot.
• Progress bar.
• Grid::num_columns: allow the last column to take up the rest of the space of the parent Ui.
• Added an API for dropping files into egui (see RawInput).
• CollapsingHeader can now optionally be selectable.

• A single-line TextEdit will now clip text that doesn't fit in it, and scroll.
• Return closure return value from Area::show, ComboBox::show_ui, ComboBox::combo_box_with_label, Window::show, popup::*, menu::menu.
• Only move/resize windows with primary mouse button.
• Tooltips are now moved to not cover the widget they are attached to.

• Fixed custom font definitions getting replaced when pixels_per_point is changed.
• Fixed lost_focus for TextEdit.
• Clicking the edge of a menu button will now properly open the menu.
• Fixed hover detection close to an Area.
• Fixed case where Plot's min_auto_bounds could be ignored after the first call to Plot::ui.
• Fixed slow startup when using large font files.

• barrowsys
• EmbersArc
• gents83
• lucaspoffo
• mankinskin
• mental32
• mitchmindtree
• parasyte
• rekka
• zu1k

• Plot: you can now set the stroke of a HLine/VLine.

• Plot::new now takes an id_source: impl Hash instead of a name: impl ToString. Functionally it is the same.

• Plot:
  • More plot items: Arrows, Polygons, Text, Images.
  • Plot legend improvements.
  • Line markers for plots.
• Panels:
  • Added right and bottom panels (SidePanel::right and Panel::bottom).
  • Panels can now be resized.
  • Added an option to overwrite frame of a Panel.
• Improve accessibility / screen reader.
• Added ScrollArea::show_rows for efficient scrolling of huge UI:s.
• Added ScrollArea::enable_scrolling to allow freezing scrolling when editing TextEdit widgets within it
• Added Ui::set_visible as a way to hide widgets.
• Added Style::override_text_style to easily change the text style of everything in a Ui (or globally).
• You can now change TextStyle on checkboxes, radio buttons and SelectableLabel.
• Added support for cint under cint feature.
• Added features extra_asserts and extra_debug_asserts to enable additional checks.
• TextEdit now supports edits on a generic buffer using TextBuffer.
• Added Context::set_debug_on_hover and egui::trace!(ui)

• Minimum Rust version is now 1.51 (used to be 1.52)
• Tweaked the default visuals style.
• Plot: Renamed Curve to Line.
• TopPanel::top is now TopBottomPanel::top.
• SidePanel::left no longet takes the default width by argument, but by a builder call.
• SidePanel::left is resizable by default.

• Fixed uneven lettering on non-integral device scales ("extortion lettering").
• Fixed invisible scroll bar when native window is too narrow for egui.

• Added anchors to windows and areas so you can put a window in e.g. the top right corner.
• Make labels interactive with Label::sense(Sense::click()).
• Added Response::request_focus and Response::surrender_focus.
• Added TextEdit::code_editor (VERY basic).
• Pan and zoom plots.
• Add plot legends.
• Users can now store custom state in egui::Memory.
• Added Response::on_disabled_hover_text to show tooltip for disabled widgets.
• Zoom input: ctrl-scroll and (on eframe web) trackpad-pinch gesture.
• Support for raw multi touch events, enabling zoom, rotate, and more. Works with eframe web on mobile devices, and should work with egui_glium for certain touch devices/screens.
• Added (optional) compatibility with mint.

• Make Memory::has_focus public (again).
• Plot must now be given a name that is unique within its scope.
• Tab only selects labels if the screen_reader option is turned on.
• Renamed ui.wrap to ui.scope.

• Fixed defocus-bug on touch screens.
• Fixed bug with the layout of wide DragValues.

• Moved experimental markup language to egui_demo_lib

• You can now give focus to any clickable widget with tab/shift-tab.
  • Use space or enter to click the selected widget.
  • Use arrow keys to adjust sliders and DragValues.
• egui will now output events when widgets gain keyboard focus.
  • This can be hooked up to a screen reader to aid the visually impaired
• Added the option to restrict the dragging bounds of Window and Area to a specified area using drag_bounds(rect).
• Added support for small and raised text.
• Added ui.set_row_height.
• Added DebugOptions::show_widgets to debug layouting by hovering widgets.
• Added ComboBox to more easily customize combo boxes.
• Added Slider::new and DragValue::new to replace old type-specific constructors.
• Added TextEdit::password to hide input characters.

• ui.advance_cursor is now called ui.add_space.
• kb_focus is now just called focus.

• Fixed some bugs related to centered layouts.
• Fixed secondary-click to open a menu.
• Fix panic for zero-range sliders and zero-speed drag values.
• Fixed false id clash error for wrapping text.
• Fixed bug that would close a popup (e.g. the color picker) when clicking inside of it.

• Deprectated combo_box_with_label in favor of new ComboBox.
• Deprectated type-specific constructors for Slider and DragValue (Slider::f32, DragValue::usize etc).

• Added egui::plot::Plot to plot some 2D data.
• Added Ui::hyperlink_to(label, url).
• Sliders can now have a value prefix and suffix (e.g. the suffix "°" works like a unit).
• Context::set_pixels_per_point to control the scale of the UI.
• Added Response::changed() to query if e.g. a slider was dragged, text was entered or a checkbox was clicked.
• Added support for all integers in DragValue and Slider (except 128-bit).

• Improve the positioning of tooltips.
• Only show tooltips if mouse is still.
• Slider will now show the value display by default, unless turned off with .show_value(false).
• The Slider value is now a DragValue which when dragged can pick values outside of the slider range (unless clamp_to_range is set).

• Added support for secondary and middle mouse buttons.
• Added Label methods for code, strong, strikethrough, underline and italics.
• Added ui.group(|ui| { … }) to visually group some widgets within a frame.
• Added Ui helpers for doing manual layout (ui.put, ui.allocate_ui_at_rect and more).
• Added ui.set_enabled(false) to disable all widgets in a Ui (grayed out and non-interactive).
• Added TextEdit::hint_text for showing a weak hint text when empty.
• egui::popup::popup_below_widget: show a popup area below another widget.
• Added Slider::clamp_to_range(bool): if set, clamp the incoming and outgoing values to the slider range.
• Add: ui.spacing(), ui.spacing_mut(), ui.visuals(), ui.visuals_mut().
• Add: ctx.set_visuals().
• You can now control text wrapping with Style::wrap.
• Added Grid::max_col_width.

• Text will now wrap at newlines, spaces, dashes, punctuation or in the middle of a words if necessary, in that order of priority.
• Widgets will now always line break at \n characters.
• Widgets will now more intelligently choose whether or not to wrap text.
• mouse has been renamed pointer everywhere (to make it clear it includes touches too).
• Most parts of Response are now methods, so if ui.button("…").clicked { is now if ui.button("…").clicked() {.
• Response::active is now gone. You can use response.dragged() or response.clicked() instead.
• Backend: pointer (mouse/touch) position and buttons are now passed to egui in the event stream.
• DragValue::range is now called clamp_range and also clamps incoming values.
• Renamed Triangles to Mesh.
• The tessellator now wraps the clip rectangle and mesh in struct ClippedMesh(Rect, Mesh).
• Mesh::split_to_u16 now returns a 16-bit indexed Mesh16.

• It is now possible to click widgets even when FPS is very low.
• Tessellator: handle sharp path corners better (switch to bevel instead of miter joints for > 90°).

• Added a simple grid layout (Grid).
• Added ui.allocate_at_least and ui.allocate_exact_size.
• Added function InputState::key_down.
• Added Window::current_pos to position a window.

• New simpler and sleeker look!
• Renamed PaintCmd to Shape.
• Replace tuple (Rect, Shape) with tuple-struct ClippedShape.
• Renamed feature "serde" to "persistence".
• Break out the modules math and paint into separate crates emath and epaint.

• Fixed a bug that would sometimes trigger a "Mismatching panels" panic in debug builds.
• Image and ImageButton will no longer stretch to fill a justified layout.

• Added ui.scroll_to_cursor and response.scroll_to_me (#81 by lucaspoffo).
• Added window.id(…) and area.id(…) for overriding the default Id.

• Renamed Srgba to Color32.
• All color contructions now starts with from_, e.g. Color32::from_rgb.
• Renamed FontFamily::VariableWidth to FontFamily::Proportional.
• Removed pixels_per_point from FontDefinitions.

• RepaintSignal now implements Sync so it can be sent to a background thread.
• TextEdit widgets are now slightly larger to accommodate their frames.

• Deprecated color::srgba.

• Turn off Window title bars with window.title_bar(false).
• ImageButton - ui.add(ImageButton::new(…)).
• ui.vertical_centered and ui.vertical_centered_justified.
• ui.allocate_painter helper.
• Mouse-over explanation to duplicate ID warning.
• You can now easily constrain egui to a portion of the screen using RawInput::screen_rect.
• You can now control the minimum and maixumum number of decimals to show in a Slider or DragValue.
• Added egui::math::Rot2: rotation helper.
• Response now contains the Id of the widget it pertains to.
• ui.allocate_response that allocates space and checks for interactions.
• Added response.interact(sense), e.g. to check for clicks on labels.

• ui.allocate_space now returns an (Id, Rect) tuple.
• Arc<Context> has been replaced with CtxRef everywhere.
• Slight tweak of the default Style and font sizes.
• SidePanel::left and TopPanel::top now takes impl Hash as first argument.
• A Window may now cover an existing CentralPanel.
• ui.image now takes impl Into<Vec2> as a size argument.
• Made some more fields of RawInput optional.
• Slider and DragValue uses fewer decimals by default. See the full precision by hovering over the value.
• egui::App: added fn name(&self) and fn clear_color(&self).
• Combo boxes has scroll bars when needed.
• Expand Window + Resize containers to be large enough for last frames content
• ui.columns: Columns now defaults to justified top-to-down layouts.
• Renamed Sense::nothing() to Sense::hover().
• Replaced parking_lot dependency with atomic_refcell by default.

• The background for CentralPanel will now cover unused space too.
• ui.columns: Improve allocated size estimation.

• RawInput::screen_size - use RawInput::screen_rect instead.
• left/centered/right column functions on Ui.
• ui.interact_hover and ui.hovered.

• Emoji support: 1216 different emojis that work in any text.
  • The Demo app comes with a Font Book to explore the available glyphs.
• ui.horizontal_wrapped(|ui| …): Add widgets on a row but wrap at max_size.
• ui.horizontal_wrapped_for_text: Like ui.horizontal_wrapped, but with spacing made for embedding text.
• ui.horizontal_for_text: Like ui.horizontal, but with spacing made for embedding text.
• egui::Layout now supports justified layouts where contents is also centered, right-aligned, etc.
• ui.allocate_ui(size, |ui| …): Easily create a child-Ui of a given size.
• SelectableLabel (ui.selectable_label and ui.selectable_value): A text-button that can be selected.
• ui.small_button: A smaller button that looks good embedded in text.
• ui.drag_angle_tau: For those who want to specify angles as fractions of τ (a full turn).
• Added Resize::id_source and ScrollArea::id_source to let the user avoid Id clashes.

• New default font: Ubuntu-Light.
• Make it simpler to override fonts in FontDefinitions.
• Remove minimum button width.
• Refactor egui::Layout substantially, changing its interface.
• Calling on_hover_text/on_hover_ui multiple times will stack tooltips underneath the previous ones.
• Text wrapping on labels, buttons, checkboxes and radio buttons is now based on the layout.

• Removed the label! macro.

• TextEdit improvements:
  • Much improved text editing, with better navigation and selection.
  • Move focus between TextEdit widgets with tab and shift-tab.
  • Undo edtis in a TextEdit.
  • You can now check if a TextEdit lost keyboard focus with response.lost_focus.
  • Added ui.text_edit_singleline and ui.text_edit_multiline.
• You can now debug why your Ui is unexpectedly wide with ui.style_mut().debug.show_expand_width = true;

• Pressing enter in a single-line TextEdit will now surrender keyboard focus for it.
• You must now be explicit when creating a TextEdit if you want it to be singeline or multiline.
• Improved automatic Id generation, making Id clashes less likely.
• egui now requires modifier key state from the integration
• Added, renamed and removed some keys in the Key enum.
• Fixed incorrect text wrapping width on radio buttons

• Fixed bug where a lost widget could still retain keyboard focus.

• Panels: you can now create panels using SidePanel, TopPanel and CentralPanel.
• You can now override the default egui fonts.
• Added ability to override text color with visuals.override_text_color.
• The demo now includes a simple drag-and-drop example.
• The demo app now has a slider to scale all of egui.

• ui.horizontal(…) etc returns Response.
• Refactored the interface for egui::app::App.
• Windows are now constrained to the screen.
• Context::begin_frame() no longer returns a Ui. Instead put your widgets into a SidePanel, TopPanel, CentralPanel, Window or Area.
• Context::end_frame() now returns shapes that need to be converted to triangles with Context::tessellate().
• Anti-aliasing is now off by default in debug builds.

• You can no longer throw windows.

• Fixed a bug where some regions would slowly grow for non-integral scales (pixels_per_point).

• Color picker
• Unicode characters in labels (limited by what the default font supports)
• Simple drop-down combo box menu
• Logarithmic sliders
• Optimization: coarse culling in the tessellator
• CHANGED: switch argument order of ui.checkbox and ui.radio

This is when I started the CHANGELOG.md, after almost two years of development. Better late than never.

• Widgets: label, text button, hyperlink, checkbox, radio button, slider, draggable value, text editing
• Layouts: horizontal, vertical, columns
• Text input: very basic, multiline, copy/paste
• Windows: move, resize, name, minimize and close. Automatically sized and positioned.
• Regions: resizing, vertical scrolling, collapsing headers (sections)
• Rendering: Anti-aliased rendering of lines, circles, text and convex polygons.
• Tooltips on hover

• 2020-08-10: renamed the project to "egui"
• 2020-05-30: first release on crates.io (0.1.0)
• 2020-04-01: serious work starts (pandemic project)
• 2019-03-12: gave a talk about what would later become egui: https://www.youtube.com/watch?v=-pmwLHw5Gbs
• 2018-12-23: initial commit
• 2018-11-04: started tinkering on a train