Struct druid::HandlerCtx

pub struct HandlerCtx<'a> { /* private fields */ }

Context given to handlers.

Implementations

impl<'a> HandlerCtx<'a>

pub fn invalidate(&mut self)

Invalidate this widget. Finer-grained invalidation is not yet implemented, but when it is, this method will invalidate the widget’s bounding box.

pub fn request_layout(&mut self)

Request layout; implies invalidation.

pub fn send_event<A: Any>(&mut self, a: A)

Send an event, to be handled by listeners.

pub fn set_active(&mut self, active: bool)

Set or unset the widget as active.

pub fn is_active(&self) -> bool

Determine whether this widget is active.

pub fn is_hot(&self) -> bool

Determine whether this widget is hot. A widget can be both hot and active, but if a widget is active, it is the only widget that can be hot.

pub fn request_anim_frame(&mut self)

Request an animation frame.

Calling this schedules an animation frame, and also causes anim_frame to be called on this widget at the beginning of that frame.