Struct Input 

pub struct Input;

A zero-sized namespace struct providing static input event extraction methods.

This struct follows the same pattern as App, serving as a namespace for free-standing input utility functions that extract data from DOM events.

Implementations

impl Input

Implements static event extraction methods on the Input namespace struct.

pub fn extract_key_code(event: &Event) -> String

Extracts the key code string from a keyboard event.

Arguments

• &Event - The keyboard event.

Returns

• String - The key code string (e.g., "KeyA", "Space", "ArrowLeft").

pub fn extract_mouse_button(event: &Event) -> MouseButton

Extracts the mouse button enum from a mouse event.

Arguments

• &Event - The mouse event.

Returns

• MouseButton - The mouse button that was pressed or released.

pub fn extract_mouse_position(event: &Event) -> Vector2D

Extracts the client (viewport) coordinates from a mouse event.

Arguments

• &Event - The mouse event.

Returns

• Vector2D - The (x, y) client coordinates.

impl Input

Implements DOM event listener registration on the Input namespace struct.

This is the wiring layer that routes DOM events into InputState: keyboard events bind to window (a <canvas> is not focusable by default), while mouse and touch events bind to the canvas element so hit-testing coordinates stay canvas-local. Registered closures are .forget()-ed and stay alive for the lifetime of the document, matching the engine’s mount-only convention.

pub fn attach( state_cell: InputStateCell, window: &Window, pointer_target: &EventTarget, ) -> InputStateCell

Attaches all input listeners and returns the shared state cell.

Arguments

• InputStateCell - The shared input state to mutate from event handlers.
• &Window - The global window, receiving keyboard events.
• &EventTarget - The pointer target (typically the canvas element).

Returns

• InputStateCell - The same cell passed in, for convenient chaining.

pub fn attach_keyboard(state_cell: &InputStateCell, window: &Window)

Binds keydown / keyup listeners to window.

Keyboard events must bind to window rather than the canvas: a <canvas> element is not focusable unless tabindex is set and the user clicks it, so canvas-bound key listeners would never fire.

Arguments

• &InputStateCell - The shared input state.
• &Window - The global window.

pub fn attach_pointer(state_cell: &InputStateCell, target: &EventTarget)

Binds mouse / touch / context-menu listeners to the pointer target.

touchstart and touchmove call prevent_default() so the browser does not interpret touches as scroll/zoom gestures before the engine sees them. contextmenu is suppressed so right-click reaches the engine as MouseButton::Right instead of opening the browser menu.

Arguments

• &InputStateCell - The shared input state.
• &EventTarget - The pointer target (typically the canvas element).

impl Input

pub fn new() -> Self

Trait Implementations

impl Clone for Input

fn clone(&self) -> Input

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Input

impl Debug for Input

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

Formats the value using the given formatter.

impl Default for Input

fn default() -> Input

Returns the “default value” for a type.

impl Eq for Input

impl Hash for Input

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Input

fn cmp(&self, other: &Input) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Input

fn eq(&self, other: &Input) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for Input

fn partial_cmp(&self, other: &Input) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Input