Enum ColumnMove 

pub enum ColumnMove {
    First,
    PageLeft,
    PageRight,
    Last,
    Reveal(usize),
    Keep(usize),
}

A sideways move. The pages need the columns’ widths to land; the rest do not, and are moves here so that one typed behind a page waiting on a draw lands after it.

Variants

First

The first scrolling column.

PageLeft

The page before: the column left of the first one shown ends it.

PageRight

The page after: the first column not shown whole starts it, or the last page starts it when that is nearer, so the last page is never short.

Last

The last page: the last column ends it, with as many before it as fit.

Reveal(usize)

Show this column: left where it is when already whole on screen, else first, or on the last page when it is on that page.

Keep(usize)

Keep this column whole on screen, scrolling as little as it takes: first when it is left of the screen, last when it is right of it.

Trait Implementations

impl Clone for ColumnMove

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 ColumnMove

impl Debug for ColumnMove

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

Formats the value using the given formatter.

impl Eq for ColumnMove

impl PartialEq for ColumnMove

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ColumnMove