Struct druid::widget::Spinner

pub struct Spinner { /* private fields */ }

An animated spinner widget for showing a loading state.

To customize the spinner’s size, you can place it inside a SizedBox that has a fixed width and height.

Implementations

impl Spinner

pub fn new() -> Spinner

Create a spinner widget

Examples found in repository

examples/blocking_function.rs (line 52)

fn ui_builder() -> impl Widget<AppState> {
    let button = Button::new("Start slow increment")
        .on_click(|ctx, data: &mut AppState, _env| {
            data.processing = true;
            // In order to make sure that the other thread can communicate with the main thread we
            // have to pass an external handle to the second thread.
            // Using this handle we can send commands back to the main thread.
            wrapped_slow_function(ctx.get_external_handle(), data.value);
        })
        .padding(5.0);

    let button_placeholder = Flex::column()
        .with_child(Label::new(LocalizedString::new("Processing...")).padding(5.0))
        .with_child(Spinner::new());

    // Hello-counter is defined in the built-in localisation file. This maps to "Current value is {count}"
    // localised in english, french, or german. Every time the value is updated it shows the new value.
    let text = LocalizedString::new("hello-counter")
        .with_arg("count", |data: &AppState, _env| (data.value).into());
    let label = Label::new(text).padding(5.0).center();

    let either = Either::new(|data, _env| data.processing, button_placeholder, button);

    Flex::column().with_child(label).with_child(either)
}

pub fn with_color(self, color: impl Into<KeyOrValue<Color>>) -> Self

Builder-style method for setting the spinner’s color.

The argument can be either a Color or a Key<Color>.

pub fn set_color(&mut self, color: impl Into<KeyOrValue<Color>>)

Set the spinner’s color.

The argument can be either a Color or a Key<Color>.

Trait Implementations

impl Default for Spinner

fn default() -> Self

Returns the “default value” for a type.

impl<T: Data> Widget<T> for Spinner

fn event( &mut self, ctx: &mut EventCtx<'_, '_>, event: &Event, _data: &mut T, _env: &Env )

Handle an event.

fn lifecycle( &mut self, ctx: &mut LifeCycleCtx<'_, '_>, event: &LifeCycle, _data: &T, _env: &Env )

Handle a life cycle notification.

fn update( &mut self, _ctx: &mut UpdateCtx<'_, '_>, _old_data: &T, _data: &T, _env: &Env )

Update the widget’s appearance in response to a change in the app’s Data or Env.

fn layout( &mut self, _layout_ctx: &mut LayoutCtx<'_, '_>, bc: &BoxConstraints, _data: &T, env: &Env ) -> Size

Compute layout.

fn paint(&mut self, ctx: &mut PaintCtx<'_, '_, '_>, _data: &T, env: &Env)

Paint the widget appearance.

fn compute_max_intrinsic( &mut self, axis: Axis, ctx: &mut LayoutCtx<'_, '_>, bc: &BoxConstraints, data: &T, env: &Env ) -> f64

Computes max intrinsic/preferred dimension of a widget on the provided axis.