Struct WindowEventReducer

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pub struct WindowEventReducer { /* private fields */ }

Expand description

Manages stateful transformations of winit [WindowEvent].

Store a single instance of this per window, then call WindowEventReducer::reduce on each [WindowEvent] for that window. Use the WindowEventTranslation value to receive [PointerEvent]s and [KeyboardEvent]s.

This handles:

[ModifiersChanged][WindowEvent::ModifiersChanged]
[KeyboardInput][WindowEvent::KeyboardInput]
[Touch][WindowEvent::Touch]
[MouseInput][WindowEvent::MouseInput]
[MouseWheel][WindowEvent::MouseWheel]
[CursorMoved][WindowEvent::CursorMoved]
[CursorEntered][WindowEvent::CursorEntered]
[CursorLeft][WindowEvent::CursorLeft]
[PinchGesture][WindowEvent::PinchGesture]
[RotationGesture][WindowEvent::RotationGesture]

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impl WindowEventReducer

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pub fn reduce( &mut self, scale_factor: f64, we: &WindowEvent, ) -> Option<WindowEventTranslation>

Process a [WindowEvent].

Trait Implementations§

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impl Debug for WindowEventReducer

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl Default for WindowEventReducer

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fn default() -> WindowEventReducer

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl UnwindSafe for WindowEventReducer

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.

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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.

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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.

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