Struct Selection 

pub struct Selection {
    pub start: (usize, usize),
    pub end: (usize, usize),
    pub mode: SelectionMode,
    pub scroll_offset: usize,
}

Selection state for text selection

Fields

start: (usize, usize)

Start position (col, row) in viewport-relative coordinates at scroll_offset

end: (usize, usize)

End position (col, row) in viewport-relative coordinates at scroll_offset

mode: SelectionMode

Selection mode

scroll_offset: usize

Scroll offset at the time the selection was captured.

Row coordinates are viewport-relative (0 = top of the visible screen) when scroll_offset was the active viewport offset. The renderer adjusts the rows by (self.scroll_offset as isize - current_scroll_offset as isize) so the highlight tracks the content as the user scrolls.

Implementations

impl Selection

pub fn new( start: (usize, usize), end: (usize, usize), mode: SelectionMode, scroll_offset: usize, ) -> Self

Create a new selection.

scroll_offset must be the current viewport scroll offset so the renderer can compensate when the user scrolls after the selection.

pub fn viewport_adjusted(&self, current_scroll_offset: usize) -> Self

Return a copy of this selection with rows adjusted to current_scroll_offset.

Rows that shift above the top of the viewport become usize::MAX so that is_cell_selected never matches them. Rows shifted below the viewport are left as-is (they exceed the row count and are also never matched).

pub fn normalized(&self) -> ((usize, usize), (usize, usize))

Get normalized selection (ensures start is before end)

Trait Implementations

impl Clone for Selection

fn clone(&self) -> Selection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Selection

impl Debug for Selection

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

Formats the value using the given formatter.

impl PartialEq for Selection

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Selection