pub struct KeyboardContext { /* private fields */ }
Expand description

Tracks held down keyboard keys, active keyboard modifiers, and figures out if the system is sending repeat keystrokes.

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impl KeyboardContext

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pub fn is_key_pressed(&self, key: KeyCode) -> bool

Checks if a key is currently pressed down.

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pub fn is_key_just_pressed(&self, key: KeyCode) -> bool

Checks if a key has been pressed down this frame.

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pub fn is_key_just_released(&self, key: KeyCode) -> bool

Checks if a key has been released this frame.

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pub fn is_scancode_pressed(&self, code: ScanCode) -> bool

Checks if a key with the corresponding scan code is currently pressed down.

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pub fn is_scancode_just_pressed(&self, code: ScanCode) -> bool

Checks if a key with the corresponding scan code has been pressed down this frame.

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pub fn is_scancode_just_released(&self, code: ScanCode) -> bool

Checks if a key with the corresponding scan code has been released this frame.

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pub fn is_key_repeated(&self) -> bool

Checks if the last keystroke sent by the system is repeated, like when a key is held down for a period of time.

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pub fn pressed_keys(&self) -> &HashSet<KeyCode>

Returns a reference to the set of currently pressed keys.

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pub fn pressed_scancodes(&self) -> &HashSet<ScanCode>

Returns a reference to the set of currently pressed scancodes.

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pub fn is_mod_active(&self, keymods: KeyMods) -> bool

Checks if keyboard modifier (or several) is active.

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pub fn active_mods(&self) -> KeyMods

Returns currently active keyboard modifiers.

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pub fn save_keyboard_state(&mut self)

Copies the current state of the keyboard into the context. If you are writing your own event loop you need to call this at the end of every update in order to use the functions is_key_just_pressed and is_key_just_released. Otherwise this is handled for you.

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pub fn set_modifiers(&mut self, keymods: KeyMods)

Set the keyboard active modifiers Really useful only if you are writing your own event loop

Trait Implementations§

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impl Clone for KeyboardContext

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fn clone(&self) -> KeyboardContext

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for KeyboardContext

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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 KeyboardContext

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fn default() -> Self

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

Auto Trait Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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<T> for T

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fn downcast(&self) -> &T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<S> FromSample<S> for S

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fn from_sample_(s: S) -> S

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impl<T> Has<T> for T

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fn retrieve(&self) -> &T

Method to retrieve the context type.
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impl<T> HasMut<T> for T

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

Method to retrieve the context type as mutable.
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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<F, T> IntoSample<T> for Fwhere T: FromSample<F>,

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fn into_sample(self) -> T

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impl<T> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> ToSample<U> for Twhere U: FromSample<T>,

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fn to_sample_(self) -> U

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> Upcast<T> for T

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fn upcast(&self) -> Option<&T>

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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<S, T> Duplex<S> for Twhere T: FromSample<S> + ToSample<S>,