Enum Step 

pub enum Step {
    NeedReference,
    NeedIndex,
    Next,
    NeedTile(TileKey),
    Save(SaveTile),
    Done(Outcome),
}

Variants

NeedReference

Read the reference frame and pass it to FramingSession::reference, then step again.

NeedIndex

Pass every stored level-0 tile-index row of the source canvas to FramingSession::index, then step again.

Next

The next output tile starts; check for pause and stop, then step again.

NeedTile(TileKey)

The tile is not resident: make room, insert it, step again.

Save(SaveTile)

Store this output tile now, then step again.

Done(Outcome)

Trait Implementations

impl Clone for Step

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Step

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

Formats the value using the given formatter.

impl PartialEq for Step

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Step