Enum ScrollTarget 

pub enum ScrollTarget {
    Start,
    End,
    Offset(f32),
}

One axis of a ScrollTo: an offset, or an end named rather than measured.

End exists because the number it stands for is not knowable where the request is written: update has the state, and the largest offset a region may rest at is a fact about a layout that has not happened yet. Naming the end and letting the frame resolve it is the difference between “the bottom” and a number that was the bottom one frame ago.

Variants

Start

Offset 0 — the end the axis starts at. On a reversed list that is the end it opened at, which is the point of reversing it.

End

As far as the content goes.

Offset(f32)

This offset exactly, clamped to what the content actually has.

Implementations

impl ScrollTarget

pub fn resolve(self, max: f32) -> f32

The offset this names, on an axis whose largest is max.

Trait Implementations

impl Clone for ScrollTarget

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ScrollTarget

impl Debug for ScrollTarget

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

Formats the value using the given formatter.

impl PartialEq for ScrollTarget

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ScrollTarget