Struct Slider

pub struct Slider<L>
where
    L: Lens,
{ /* private fields */ }

The slider control can be used to select from a continuous set of values.

The slider control consists of three main parts, a thumb element which can be moved between the extremes of a linear track, and an active element which fills the slider to indicate the current value.

Examples

Basic Slider

In the following example, a slider is bound to a value. The on_change callback is used to send an event to mutate the bound value when the slider thumb is moved, or if the track is clicked on.

Slider::new(cx, AppData::value)
    .on_change(|cx, value| {
        debug!("Slider on_change: {}", value);
    });

Slider with Label

HStack::new(cx, |cx|{
    Slider::new(cx, AppData::value)
        .on_change(|cx, value| {
            debug!("Slider on_change: {}", value);
        });
    Label::new(cx, AppData::value.map(|val| format!("{:.2}", val)));
});

Implementations

impl<L> Slider<L>

where L: Lens<Target = f32>,

pub fn new(cx: &mut Context, lens: L) -> Handle<'_, Slider<L>>

Creates a new slider bound to the value targeted by the lens.

Slider::new(cx, AppData::value)
    .on_change(|cx, value| {
        debug!("Slider on_change: {}", value);
    });

Trait Implementations

impl<L> View for Slider<L>

where L: Lens<Target = f32>,

fn element(&self) -> Option<&'static str>

Specifies a name for the view type which can be used as an element selector in css.

fn accessibility(&self, _cx: &mut AccessContext<'_>, node: &mut AccessNode)

Provides a way to configure the accessibility features of a view.

fn event(&mut self, cx: &mut EventContext<'_>, event: &mut Event)

Handles any events received by the view.

fn build<F>(self, cx: &mut Context, content: F) -> Handle<'_, Self>

where F: FnOnce(&mut Context),

Builds the view into the tree and returns a handle which can be used to apply style and layout modifiers to the view.

fn draw(&self, cx: &mut DrawContext<'_>, canvas: &Canvas)

Provides custom drawing for the view.