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focus_directional

ftui_layout::pane_command

Function focus_directional 

Source 
pub fn focus_directional(
    tree: &PaneTree,
    layout: &PaneLayout,
    active: PaneId,
    direction: PaneCardinalDirection,
) -> Option<PaneId>
Expand description

The nearest leaf to active in a cardinal direction, using solved geometry.

Tie-break order (all deterministic): smallest primary-axis center distance, then largest perpendicular overlap, then earliest focus_order index. Returns None when no leaf lies in the direction.