Struct Element 

pub struct Element<'a, Message, Theme, Renderer> { /* private fields */ }

A generic Widget.

It is useful to build composable user interfaces that do not leak implementation details in their view logic.

If you have any Widget, you should be able to use Widget::boxed to turn it into an Element.

Trait Implementations

impl<'a, Message, Theme, Renderer> Meta for Element<'a, Message, Theme, Renderer>

fn is_void(&self) -> bool

Returns whether the Widget is Void.

impl<'a, Message, Theme, Renderer> Widget<Message, Theme, Renderer> for Element<'a, Message, Theme, Renderer>

fn size(&self) -> Size<Length>

Returns the Size of the Widget in lengths.

fn tag(&self) -> Tag

Returns the Tag of the Widget.

fn state(&self) -> State

Returns the State of the Widget.

fn diff(&mut self, tree: &mut Tree)

Reconciles the Widget with the provided Tree.

fn layout(&mut self, tree: &mut Tree, renderer: &Renderer, limits: &Limits)

Lays out the Widget.

fn draw( &self, tree: &Tree, renderer: &mut Renderer, theme: &Theme, style: &Style, layout: Layout, cursor: Cursor, viewport: &Rectangle, )

Draws the Widget using the associated Renderer.

fn operate( &mut self, tree: &mut Tree, layout: Layout, viewport: &Rectangle, renderer: &Renderer, operation: &mut dyn Operation, )

Applies an Operation to the Widget.

fn update( &mut self, tree: &mut Tree, event: &Event, layout: Layout, cursor: Cursor, renderer: &Renderer, shell: &mut Shell<'_, Message>, viewport: &Rectangle, )

Processes a runtime Event.

fn mouse_interaction( &self, tree: &Tree, layout: Layout, cursor: Cursor, viewport: &Rectangle, renderer: &Renderer, ) -> Interaction

Returns the current mouse::Interaction of the Widget.

fn overlay<'b>( &'b mut self, tree: &'b mut Tree, layout: Layout, renderer: &Renderer, viewport: &Rectangle, translation: Vector, window: Size, ) -> Vec<Element<'b, Message, Theme, Renderer>>

Returns the overlays of the Widget.

fn _boxed<'b>(self) -> Element<'b, Message, Theme, Renderer>

where Self: Sized + 'b,

Boxes this Widget, turning it into a generic Element.

fn _map<F, B>(self, f: F) -> Map<Self, F, Message>

where Self: Sized, F: Fn(Message) -> B,

Applies a transformation to the produced message of this Widget, returning a Map.