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The format is based on Keep a Changelog.

The sections should follow the order Added, Changed, Deprecated, Removed, and Fixed.

Platform specific changed should be added to the end of the section and grouped by platform name. Common API additions should have , implemented at the end for platforms where the API was initially implemented. See the following example on how to add them:

### Added

- Add `Window::turbo()`, implemented on X11, Wayland, and Web.
- On X11, add `Window::some_rare_api`.
- On X11, add `Window::even_more_rare_api`.
- On Wayland, add `Window::common_api`.
- On Windows, add `Window::some_rare_api`.

When the change requires non-trivial amount of work for users to comply with it, the migration guide should be added below the entry, like:

- Deprecate `Window` creation outside of `EventLoop::run`

  This was done to simply migration in the future. Consider the
  following code:

  // Code snippet.

  To migrate it we should do X, Y, and then Z, for example:

  // Code snippet.

The migration guide could reference other migration examples in the current changelog entry.

Unreleased

Added

  • Add ActiveEventLoop::create_proxy().

  • On Web, add ActiveEventLoopExtWeb::is_cursor_lock_raw() to determine if DeviceEvent::MouseMotion is returning raw data, not OS accelerated, when using CursorGrabMode::Locked.

  • On Web, implement MonitorHandle and VideoModeHandle.

    Without prompting the user for permission, only the current monitor is returned. But when prompting and being granted permission through ActiveEventLoop::request_detailed_monitor_permission(), access to all monitors and their details is available. Handles created with "detailed monitor permissions" can be used in Window::set_fullscreen() as well.

    Keep in mind that handles do not auto-upgrade after permissions are granted and have to be re-created to make full use of this feature.

  • Implement Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd and Serialize on many types.

  • Add MonitorHandle::current_video_mode().

  • Add basic iOS IME support. The soft keyboard can now be shown using Window::set_ime_allowed.

  • Add ApplicationHandlerExtMacOS trait, and a macos_handler method to ApplicationHandler which returns a dyn ApplicationHandlerExtMacOS which allows for macOS specific extensions to winit.

  • Add a standard_key_binding method to the ApplicationHandlerExtMacOS trait. This allows handling of standard keybindings such as "go to end of line" on macOS.

  • On macOS, add WindowExtMacOS::set_borderless_game and WindowAttributesExtMacOS::with_borderless_game to fully disable the menu bar and dock in Borderless Fullscreen as commonly done in games.

  • On macOS, add WindowExtMacOS::set_unified_titlebar and WindowAttributesExtMacOS::with_unified_titlebar to use a larger style of titlebar.

  • Add WindowId::into_raw() and from_raw().

  • Add PointerKind, PointerSource, ButtonSource, FingerId, primary and position to all pointer events as part of the pointer event overhaul.

  • Add DeviceId::into_raw() and from_raw().

Changed

  • Change ActiveEventLoop to be a trait.

  • Change Window to be a trait.

  • ActiveEventLoop::create_window now returns Box<dyn Window>.

  • ApplicationHandler now uses dyn ActiveEventLoop.

  • On Web, let events wake up event loop immediately when using ControlFlow::Poll.

  • Bump MSRV from 1.70 to 1.73.

  • Changed ApplicationHandler::user_event to user_wake_up, removing the generic user event.

    Winit will now only indicate that wake up happened, you will have to pair this with an external mechanism like std::sync::mpsc::channel if you want to send specific data to be processed on the main thread.

  • Changed EventLoopProxy::send_event to EventLoopProxy::wake_up, it now only wakes up the loop.

  • On X11, implement smooth resizing through the sync extension API.

  • ApplicationHandler::can_create|destroy_surfaces() was split off from ApplicationHandler::resumed/suspended().

    ApplicationHandler::can_create_surfaces() should, for portability reasons to Android, be the only place to create render surfaces.

    ApplicationHandler::resumed/suspended() are now only emitted by iOS, Web and Android, and now signify actually resuming/suspending the application.

  • Rename platform::web::*ExtWebSys to *ExtWeb.

  • Change signature of EventLoop::run_app, EventLoopExtPumpEvents::pump_app_events and EventLoopExtRunOnDemand::run_app_on_demand to accept a impl ApplicationHandler directly, instead of requiring a &mut reference to it.

  • On Web, Window::canvas() now returns a reference.

  • On Web, CursorGrabMode::Locked now lets DeviceEvent::MouseMotion return raw data, not OS accelerated, if the browser supports it.

  • (Active)EventLoop::create_custom_cursor() now returns a Result<CustomCursor, ExternalError>.

  • Changed how ModifiersState is serialized by Serde.

  • VideoModeHandle::refresh_rate_millihertz() and bit_depth() now return a Option<NonZero*>.

  • MonitorHandle::position() now returns an Option.

  • On iOS and macOS, remove custom application delegates. You are now allowed to override the application delegate yourself.

  • On iOS, no longer act as-if the application successfully open all URLs. Override application:didFinishLaunchingWithOptions: and provide the desired behaviour yourself.

  • On X11, remove our dependency on libXcursor. (#3749)

  • Renamed the following APIs to make it clearer that the sizes apply to the underlying surface:

    • WindowEvent::Resized to SurfaceResized.
    • InnerSizeWriter to SurfaceSizeWriter.
    • WindowAttributes.inner_size to surface_size.
    • WindowAttributes.min_inner_size to min_surface_size.
    • WindowAttributes.max_inner_size to max_surface_size.
    • WindowAttributes.resize_increments to surface_resize_increments.
    • WindowAttributes::with_inner_size to with_surface_size.
    • WindowAttributes::with_min_inner_size to with_min_surface_size.
    • WindowAttributes::with_max_inner_size to with_max_surface_size.
    • WindowAttributes::with_resize_increments to with_surface_resize_increments.
    • Window::inner_size to surface_size.
    • Window::request_inner_size to request_surface_size.
    • Window::set_min_inner_size to set_min_surface_size.
    • Window::set_max_inner_size to set_max_surface_size.

    To migrate, you can probably just replace all instances of inner_size with surface_size in your codebase.

  • Every event carrying a DeviceId now uses Option<DeviceId> instead. A None value signifies that the device can't be uniquely identified.

  • Pointer WindowEvents were overhauled. The new events can handle any type of pointer, serving as a single pointer input source. Now your application can handle any pointer type without having to explicitly handle e.g. Touch:

    • Rename CursorMoved to PointerMoved.
    • Rename CursorEntered to PointerEntered.
    • Rename CursorLeft to PointerLeft.
    • Rename MouseInput to PointerButton.
    • Add primary to every PointerEvent as a way to identify discard non-primary pointers in a multi-touch interaction.
    • Add position to every PointerEvent.
    • PointerMoved is not sent after PointerEntered anymore.
    • Remove Touch, which is folded into the Pointer* events.
    • New PointerKind added to PointerEntered and PointerLeft, signifying which pointer type is the source of this event.
    • New PointerSource added to PointerMoved, similar to PointerKind but holding additional data.
    • New ButtonSource added to PointerButton, similar to PointerKind but holding pointer type specific buttons. Use ButtonSource::mouse_button() to easily normalize any pointer button type to a generic mouse button.
    • New FingerId added to PointerKind::Touch and PointerSource::Touch able to uniquely identify a finger in a multi-touch interaction. Replaces the old Touch::id.
    • In the same spirit rename DeviceEvent::MouseMotion to PointerMotion.
    • Remove Force::Calibrated::altitude_angle.

Removed

  • Remove Event.

  • Remove already deprecated APIs:

    • EventLoop::create_window()
    • EventLoop::run.
    • EventLoopBuilder::new()
    • EventLoopExtPumpEvents::pump_events.
    • EventLoopExtRunOnDemand::run_on_demand.
    • VideoMode
    • WindowAttributes::new()
    • Window::set_cursor_icon()

  • On iOS, remove platform::ios::EventLoopExtIOS and related platform::ios::Idiom type.

    This feature was incomplete, and the equivalent functionality can be trivially achieved outside of winit using objc2-ui-kit and calling UIDevice::currentDevice().userInterfaceIdiom().

  • On Web, remove unused platform::web::CustomCursorError::Animation.

  • Remove the rwh_04 and rwh_05 cargo feature and the corresponding raw-window-handle v0.4 and v0.5 support. v0.6 remains in place and is enabled by default.

  • Remove DeviceEvent::Added and DeviceEvent::Removed.

  • Remove DeviceEvent::Motion and WindowEvent::AxisMotion.

  • Remove MonitorHandle::size() and refresh_rate_millihertz() in favor of MonitorHandle::current_video_mode().

  • On Android, remove all MonitorHandle support instead of emitting false data.

  • Remove impl From<u64> for WindowId and impl From<WindowId> for u64. Replaced with WindowId::into_raw() and from_raw().

  • Remove dummy() from WindowId and DeviceId.

  • Remove WindowEvent::Touch and Touch in favor of the new PointerKind, PointerSource and ButtonSource as part of the new pointer event overhaul.

  • Remove Force::altitude_angle.

Fixed

  • On Orbital, MonitorHandle::name() now returns None instead of a dummy name.
  • On macOS, fix WindowEvent::Moved sometimes being triggered unnecessarily on resize.
  • On macOS, package manifest definitions of LSUIElement will no longer be overridden with the default activation policy, unless explicitly provided during initialization.
  • On macOS, fix crash when calling drag_window() without a left click present.
  • On X11, key events forward to IME anyway, even when it's disabled.
  • On Windows, make ControlFlow::WaitUntil work more precisely using CREATE_WAITABLE_TIMER_HIGH_RESOLUTION.
  • On X11, creating windows on screen that is not the first one (e.g. DISPLAY=:0.1) works again.