Struct EventContext 

pub struct EventContext<C: ComponentId> {
    pub focused_component: Option<C>,
    pub mouse_position: Option<(u16, u16)>,
    pub modifiers: KeyModifiers,
    pub component_areas: HashMap<C, Rect>,
    pub is_modal_open: bool,
    pub active_modal: Option<C>,
}

Context passed with every event

Generic over the component ID type C which must implement ComponentId.

Fields

focused_component: Option<C>

Currently focused component

mouse_position: Option<(u16, u16)>

Current mouse position (if known)

modifiers: KeyModifiers

Active key modifiers

component_areas: HashMap<C, Rect>

Component areas for hit-testing

is_modal_open: bool

Whether a modal is currently open

active_modal: Option<C>

The active modal (if any)

Implementations

impl<C: ComponentId> EventContext<C>

pub fn new() -> Self

Create a new event context

pub fn is_focused(&self, component: C) -> bool

Check if a component is focused

pub fn point_in_component(&self, component: C, x: u16, y: u16) -> bool

Check if a point is within a component’s area

pub fn component_at(&self, x: u16, y: u16) -> Option<C>

Get the component at a given point

pub fn set_component_area(&mut self, component: C, area: Rect)

Update the area for a component

pub fn set_focus(&mut self, component: Option<C>)

Set the focused component

pub fn set_modal(&mut self, modal: Option<C>)

Set modal state

Trait Implementations

impl<C: Clone + ComponentId> Clone for EventContext<C>

fn clone(&self) -> EventContext<C>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<C: Debug + ComponentId> Debug for EventContext<C>

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

Formats the value using the given formatter.

impl<C: ComponentId> Default for EventContext<C>

fn default() -> Self

Returns the “default value” for a type.