Struct Slider 

pub struct Slider<A, T: SliderValue, D: Directional = Direction> { /* private fields */ }

A slider

Sliders allow user input of a value from a fixed range.

Messages

SetValueF64 may be used to set the input value.

IncrementStep and DecrementStep change the value by one step.

Implementations

impl<A, T: SliderValue, D> Slider<A, T, D>

where D: Default + Directional,

pub fn new( range: RangeInclusive<T>, state_fn: impl Fn(&ConfigCx<'_>, &A) -> T + 'static, ) -> Self

Construct a slider

Values vary within the given range, increasing in the given direction. The default step size is 1 for common types (see SliderValue::default_step).

The slider’s current value is set by state_fn on update.

To make the slider interactive, assign an event handler with Self::with or Self::with_msg.

impl<A, T: SliderValue> Slider<A, T, Left>

pub fn left( range: RangeInclusive<T>, state_fn: impl Fn(&ConfigCx<'_>, &A) -> T + 'static, ) -> Self

Construct with fixed direction

impl<A, T: SliderValue> Slider<A, T, Right>

pub fn right( range: RangeInclusive<T>, state_fn: impl Fn(&ConfigCx<'_>, &A) -> T + 'static, ) -> Self

Construct with fixed direction

impl<A, T: SliderValue> Slider<A, T, Up>

pub fn up( range: RangeInclusive<T>, state_fn: impl Fn(&ConfigCx<'_>, &A) -> T + 'static, ) -> Self

Construct with fixed direction

impl<A, T: SliderValue> Slider<A, T, Down>

pub fn down( range: RangeInclusive<T>, state_fn: impl Fn(&ConfigCx<'_>, &A) -> T + 'static, ) -> Self

Construct with fixed direction

impl<A, T: SliderValue, D: Directional> Slider<A, T, D>

pub fn new_dir( range: RangeInclusive<T>, state_fn: impl Fn(&ConfigCx<'_>, &A) -> T + 'static, direction: D, ) -> Self

Construct a slider with given direction

Values vary within the given range, increasing in the given direction. The default step size is 1 for common types (see SliderValue::default_step).

The slider’s current value is set by state_fn on update.

To make the slider interactive, assign an event handler with Self::with or Self::with_msg.

pub fn with_msg<M>(self, f: impl Fn(T) -> M + 'static) -> Self

where M: Debug + 'static,

Send the message generated by f on movement

pub fn with(self, f: impl Fn(&mut EventCx<'_>, &A, T) + 'static) -> Self

Call the handler f on movement

pub fn direction(&self) -> Direction

Get the slider’s direction

pub fn with_step(self, step: T) -> Self

Set the step size

Trait Implementations

impl<A, T: SliderValue, D: Directional> Debug for Slider<A, T, D>

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

Formats the value using the given formatter.

impl<A, T: SliderValue, D: Directional> Events for Slider<A, T, D>

const REDRAW_ON_MOUSE_OVER: bool = true

Does this widget have a different appearance on mouse over?

fn update(&mut self, cx: &mut ConfigCx<'_>, data: &A)

Update self using input data

fn handle_event( &mut self, cx: &mut EventCx<'_>, data: &A, event: Event<'_>, ) -> IsUsed

Handle an Event

fn handle_messages(&mut self, cx: &mut EventCx<'_>, data: &A)

Handler for messages from children/descendants

fn mouse_over_icon(&self) -> Option<CursorIcon>

The mouse cursor icon to use on mouse over

fn make_child_id(&mut self, index: usize) -> Id

Make an identifier for a child

fn configure(&mut self, cx: &mut ConfigCx<'_>)

Configure self

fn configure_recurse(&mut self, cx: &mut ConfigCx<'_>, data: &Self::Data)

Configure children

fn update_recurse(&mut self, cx: &mut ConfigCx<'_>, data: &Self::Data)

Update children

fn handle_mouse_over(&mut self, cx: &mut EventCx<'_>, state: bool)

Mouse focus handler

fn handle_scroll( &mut self, cx: &mut EventCx<'_>, data: &Self::Data, scroll: Scroll, )

Handler for scrolling

impl<A, T: SliderValue, D: Directional> Layout for Slider<A, T, D>

fn size_rules(&mut self, sizer: SizeCx<'_>, axis: AxisInfo) -> SizeRules

Get size rules for the given axis

fn set_rect(&mut self, cx: &mut ConfigCx<'_>, rect: Rect, hints: AlignHints)

Set size and position

fn draw(&self, draw: DrawCx<'_>)

Draw a widget and its children

fn rect(&self) -> Rect

Get the widget’s region

fn try_probe(&self, coord: Coord) -> Option<Id>

Probe a coordinate for a widget’s Id

impl<A, T: SliderValue, D: Directional> Tile for Slider<A, T, D>

fn navigable(&self) -> bool

Whether this widget supports navigation focus

fn role(&self, _: &mut dyn RoleCx) -> Role<'_>

Describe the widget’s role

fn probe(&self, coord: Coord) -> Id

Probe a coordinate for a widget’s Id

fn as_tile(&self) -> &dyn Tile

Get as a dyn Tile

fn id_ref(&self) -> &Id

Get a reference to the widget’s identifier

fn identify(&self) -> IdentifyWidget<'_>

Return a Display-able widget identifier

fn get_child(&self, index: usize) -> Option<&dyn Tile>

Access a child as a dyn Tile, if available

fn child_indices(&self) -> ChildIndices

Get child indices available to recursion

fn nav_next(&self, reverse: bool, from: Option<usize>) -> Option<usize>

Navigation in spatial order

fn id(&self) -> Id

Get the widget’s identifier

fn tooltip(&self) -> Option<&str>

Tooltip

fn role_child_properties(&self, cx: &mut dyn RoleCx, index: usize)

Specify additional role properties for child index

fn find_child_index(&self, id: &Id) -> Option<usize>

Find the child which is an ancestor of this id, if any

fn translation(&self, index: usize) -> Offset

Get translation of child index relative to this widget

impl<A, T: SliderValue, D: Directional> Widget for Slider<A, T, D>

type Data = A

Input data type

fn as_node<'__a>(&'__a mut self, data: &'__a Self::Data) -> Node<'__a>

Erase type

fn child_node<'__n>( &'__n mut self, data: &'__n Self::Data, index: usize, ) -> Option<Node<'__n>>

Access a child as a Node, if available