Struct Void 

pub struct Void;

Available on crate feature advanced only.

A zero-sized Widget that does nothing and will be filtered out by containers.

Trait Implementations

impl<'a, Message, Theme, Renderer> From<Void> for Element<'a, Message, Theme, Renderer>

where Renderer: Renderer,

fn from(void: Void) -> Element<'a, Message, Theme, Renderer>

Converts to this type from the input type.

impl<Message, Theme, Renderer> Widget<Message, Theme, Renderer> for Void

where Renderer: Renderer,

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

Returns the Size of the Widget in lengths.

fn layout( &mut self, _tree: &mut Tree, _renderer: &Renderer, _limits: &Limits, ) -> Node

Returns the layout::Node of 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 is_void(&self) -> bool

Returns whether the Widget is Void.

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 operate( &mut self, _tree: &mut Tree, _layout: Layout<'_>, _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<'a>( &'a mut self, _tree: &'a mut Tree, _layout: Layout<'a>, _renderer: &Renderer, _viewport: &Rectangle, _translation: Vector, ) -> Option<Element<'a, Message, Theme, Renderer>>

Returns the overlay of the Widget, if there is any.