Struct DrawHandler

pub struct DrawHandler<T, V> {
    pub content: V,
    pub on_draw: Option<Box<dyn FnMut(&mut DrawCx<'_, '_>, &mut T)>>,
}

A view that hooks into the draw cycle.

Fields

content: V

The content.

on_draw: Option<Box<dyn FnMut(&mut DrawCx<'_, '_>, &mut T)>>

The draw callback.

Implementations

impl<T, V> DrawHandler<T, V>

pub fn new(content: V) -> DrawHandler<T, V>

Create a new DrawHandler.

pub fn on_draw( self, on_draw: impl FnMut(&mut DrawCx<'_, '_>, &mut T) + 'static, ) -> DrawHandler<T, V>

Set the draw callback.

Trait Implementations

impl<T, V> View<T> for DrawHandler<T, V>

where V: View<T>,

type State = <V as View<T>>::State

The state of the view, see top-level documentation for more information.

fn build( &mut self, cx: &mut BuildCx<'_, '_>, data: &mut T, ) -> <DrawHandler<T, V> as View<T>>::State

Build the view state, see top-level documentation for more information.

fn rebuild( &mut self, state: &mut <DrawHandler<T, V> as View<T>>::State, cx: &mut RebuildCx<'_, '_>, data: &mut T, old: &DrawHandler<T, V>, )

Rebuild the view state, see top-level documentation for more information.

fn event( &mut self, state: &mut <DrawHandler<T, V> as View<T>>::State, cx: &mut EventCx<'_, '_>, data: &mut T, event: &Event, ) -> bool

Handle an event, see top-level documentation for more information.

fn layout( &mut self, state: &mut <DrawHandler<T, V> as View<T>>::State, cx: &mut LayoutCx<'_, '_>, data: &mut T, space: Space, ) -> Size

Layout the view, see top-level documentation for more information.

fn draw( &mut self, state: &mut <DrawHandler<T, V> as View<T>>::State, cx: &mut DrawCx<'_, '_>, data: &mut T, )

Draw the view, see top-level documentation for more information.