Module slider 

A slider’s arithmetic: what value a pointer position, an arrow, a Page key or Home / End means on a node whose role is Slider and that declared on_change.

The core proposes a value and never applies it: the change event carries the number, and nothing moves until the view declares it as value_now. Nothing here is retained past a drag. The stock control is widgets::slider; this module is what it and a custom slider share.

Numbers are worked in f64 from the declared f32s read back through their shortest decimal spelling, and a result is rounded to the decimals the range and step are written in, so a step of 0.1 from 0 is 0.3 on the wire and not 0.30000001192092896.

Structs

SliderRange

A slider’s range and step, as the view declared them. The ARIA defaults stand in for an unset end: 0 and 100.

SliderTrack

A slider’s track as the pointer reads it: the node’s content box along its main axis, and the range it maps onto. Registered on the node’s hit region when it declared on_change (HitRegion::slider).

Enums

SliderMove

One keyboard (or assistive-technology) move of a slider.

Functions

change_event

{kind="change", value, phase, tag} on the slider.