Function startSelection

src/ink/selection.ts:79–98

(
  s: SelectionState,
  col: number,
  row: number,
)

}

export function startSelection(
  s: SelectionState,
  col: number,
  row: number,
): void {
  s.anchor = { col, row }
  // Focus is not set until the first drag motion. A click-release with no
  // drag leaves focus null → hasSelection/selectionBounds return false/null
  // via the `!s.focus` check, so a bare click never highlights a cell.
  s.focus = null
  s.isDragging = true
  s.anchorSpan = null
  s.scrolledOffAbove = []
  s.scrolledOffBelow = []
  s.scrolledOffAboveSW = []
  s.scrolledOffBelowSW = []
  s.virtualAnchorRow = undefined
  s.virtualFocusRow = undefined
  s.lastPressHadAlt = false
}

export function updateSelection(
  s: SelectionState,