Struct floem::context::EventCx

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

A bundle of helper methods to be used by View::event handlers

Implementations

impl<'a> EventCx<'a>

pub fn request_all(&mut self, id: Id)

request that this node be styled, laid out and painted again This will recursively request this for all parents.

pub fn request_style(&mut self, id: Id)

request that this node be styled again This will recursively request style for all parents.

pub fn request_layout(&mut self, id: Id)

request that this node be laid out again This will recursively request layout for all parents and set the ChangeFlag::LAYOUT at root

pub fn request_paint(&mut self, id: Id)

request that this node be painted again

pub fn app_state_mut(&mut self) -> &mut AppState

pub fn app_state(&self) -> &AppState

pub fn update_active(&mut self, id: Id)

pub fn is_active(&self, id: Id) -> bool

pub fn get_computed_style(&self, id: Id) -> Option<&Style>

pub fn get_layout(&self, id: Id) -> Option<Layout>

pub fn view_event( &mut self, view: &mut dyn View, id_path: Option<&[Id]>, event: Event ) -> EventPropagation

Internal method used by Floem. This can be called from parent Views to propagate an event to the child View.

pub fn should_send(&mut self, id: Id, event: &Event) -> bool

Used to determine if you should send an event to another view. This is basically a check for pointer events to see if the pointer is inside a child view and to make sure the current view isn’t hidden or disabled. Usually this is used if you want to propagate an event to a child view