Struct Ghost 

pub struct Ghost { /* private fields */ }

A light surface that fills its area with the accent mixed into whatever lies under it: no lines, no text, nothing to click. It shows where something will be, for a window dragged as a ghost over a slow connection (the window stays put, only this moves, and it lands in one frame when the button comes up) and for the area a window would snap to.

Place it with View::place in the same stack as the windows, after them, so it lies over what it covers. It takes no pointer: a press goes through to the window beneath, and a drag that is already under way keeps the window it belongs to.

mix says how strong the tone is, around a quarter for a dragged ghost and a fifth for a snap preview. In 256 and 16 colours the cells beneath cannot be blended, so the ghost paints the accent mixed into the theme’s canvas and keeps the text on it readable.

Style keys: ghost (bg, the colour mixed into the ground; the accent when the theme is silent).

Implementations

impl Ghost

pub fn new() -> Self

A ghost with the usual quarter of accent in the ground.

pub fn mix(self, ratio: f32) -> Self

How much accent goes into the ground, from 0 to 1.

Trait Implementations

impl Clone for Ghost

fn clone(&self) -> Ghost

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Ghost

impl Debug for Ghost

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Ghost

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Ghost

fn eq(&self, other: &Ghost) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Ghost

impl<Msg: 'static> Widget<Msg> for Ghost

fn measure(&self, _cx: &mut MeasureCx<'_>, available: Size) -> Size

The size the widget wants when it may use up to available.

fn paint(&self, cx: &mut PaintCx<'_>, area: Rect)

Draws the widget into area.

fn paint_overlay(&self, _cx: &mut PaintCx<'_>, _anchor: Rect)

Draws the widget’s overlay after the whole view was painted, when it asked for one with PaintCx::request_overlay. anchor is the area the widget was painted in.

fn event(&self, _cx: &mut EventCx<'_, Msg>, _event: &Event) -> bool

Handles input. Returns true when the event was used; unused key and scroll events bubble to the parent widget.

fn focusable(&self) -> bool

Whether the widget can take keyboard focus.

fn children(&self) -> &[Node<Msg>]

Child nodes, for widgets that contain other widgets.

fn children_mut(&mut self) -> &mut [Node<Msg>]

Mutable child nodes, used to assign ids.