Struct SliderData 

pub struct SliderData {
    pub sprites: Vec<Option<SpriteRef>>,
    pub range: [f32; 2],
    pub value: f32,
    pub steps: i32,
    pub inset: i32,
    pub track_y: i32,
    pub number: Option<NodeId>,
    pub over_knob: bool,
    pub drag: Option<(f32, i32)>,
}

The state of a slider.

Fields

sprites: Vec<Option<SpriteRef>>

The sprites: the track’s ends and middle, the knob, and the knob under the pointer.

range: [f32; 2]

The smallest and the largest value.

value: f32

The value.

steps: i32

Steps across the range (SliderDescription): a click on the track moves the value one of them.

inset: i32

The space between the track’s ends and the knob’s travel, in pixels.

track_y: i32

The track’s vertical position in the element, in pixels.

number: Option<NodeId>

The number shown next to the slider, if it has one.

over_knob: bool

The pointer is over the knob (it draws the fifth sprite).

drag: Option<(f32, i32)>

A drag from the knob (flag 0x200000): the value and pointer x when it began.

Implementations

impl SliderData

pub fn step(&self) -> f32

One step of the range (a track click), a hundredth when the slider has none.

pub fn knob(&self, rect: [i32; 4]) -> [i32; 4]

The knob’s rectangle in rect: its sprite’s size, from the inset at the minimum.

pub fn dragged(&self, rect: [i32; 4], x: i32) -> Option<f32>

The value a drag from the knob gives with the pointer at x.

Trait Implementations

impl Clone for SliderData

fn clone(&self) -> SliderData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SliderData

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

Formats the value using the given formatter.