Enum ScrollAlign 

pub enum ScrollAlign {
    Minimal,
    Fraction(f32),
}

Where a WidgetEvent::ScrollIntoView target should come to rest on the scroll container’s vertical axis.

The horizontal axis is always revealed minimally — a fraction only has an obvious meaning for the axis the request is about, and pinning a caret vertically must not yank a horizontally-scrolled view sideways.

Variants

Minimal

Scroll the least amount that makes the target fully visible, and not at all when it already is. This is what focus-driven reveals and EventContext::ensure_visible use, and it is the behaviour every scroll container had before alignment existed.

Fraction(f32)

Pin the target at f of the way down the viewport — 0.0 flush with the top, 0.5 centred, 1.0 flush with the bottom — whether or not it is already visible. Being unconditional is the whole point: a typewriter-scrolling caret that only moved the view when it fell off the edge would not be pinned at all.

The container still clamps to its scroll range, so a target near the start or end of the content comes to rest as close to f as the range allows. See ScrollArea::scroll_past_end for buying range past the end of the content so the last line can still reach the pin.

Trait Implementations

impl Clone for ScrollAlign

fn clone(&self) -> ScrollAlign

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ScrollAlign

impl Debug for ScrollAlign

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

Formats the value using the given formatter.

impl PartialEq for ScrollAlign

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ScrollAlign