Struct PaneHitMap 

pub struct PaneHitMap { /* private fields */ }

Every pane body painted this frame.

Small (one entry per visible pane, so single digits) and walked linearly — a click is a human gesture, and an index would cost more to maintain than it saves.

Implementations

impl PaneHitMap

pub fn new() -> Self

pub fn clear(&mut self)

Drop every recorded zone. Called at the top of each frame; a stale map would route clicks against a layout no longer painted.

pub fn set_rows(&mut self, pane_id: PaneId, rows: Vec<Option<RowOrigin>>)

Record what the compose loop painted into pane, row by row.

Called from the composer rather than from the layout pass, which is why it is a separate call from Self::push: the zone’s rect is known before the pane’s contents are composed, and its rows only after.

pub fn origin_at(&self, pane_id: PaneId, row_offset: u16) -> Option<RowOrigin>

The buffer origin of row_offset within pane, if it has one.

A row past the end of the buffer, or a virtual row, falls back to the last row above it that does have an origin. Clicking the blank space below a short buffer puts the cursor on its last line, which is what every editor does and what a terminal makes the common case — it reports a cell for every row on screen, not only the ones with text under them.

pub fn push(&mut self, zone: PaneHitZone)

pub fn is_empty(&self) -> bool

pub fn len(&self) -> usize

pub fn hit(&self, col: u16, row: u16) -> Option<PaneHitZone>

The pane under (col, row), if any.

Last match wins, so a pane painted over another — a popup body above a document — takes the click. Panes are pushed in paint order, which makes later-painted mean on-top without the map needing a z-index.

pub fn resolve(&self, col: u16, row: u16) -> Option<BodyHit>

Resolve a screen cell to a position inside a pane’s body.

None when the cell is outside every pane. A cell on the gutter resolves to its pane with text_col: None — the pane is still the right scroll target for a wheel event there, and a click on a line number is a real gesture with its own meaning (fold toggle, eventually) rather than a miss.

Trait Implementations

impl Clone for PaneHitMap

fn clone(&self) -> PaneHitMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PaneHitMap

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

Formats the value using the given formatter.

impl Default for PaneHitMap

fn default() -> PaneHitMap

Returns the “default value” for a type.