Struct ViewLineMapping 

pub struct ViewLineMapping {
    pub char_source_bytes: Vec<Option<usize>>,
    pub visual_to_char: Vec<usize>,
    pub line_end_byte: usize,
}

Mapping from visual row to buffer positions for mouse click handling Each entry represents one visual row with byte position info for click handling

Fields

char_source_bytes: Vec<Option<usize>>

Source byte offset for each character (None for injected/virtual content)

visual_to_char: Vec<usize>

Character index at each visual column (for O(1) mouse clicks)

line_end_byte: usize

Last valid byte position in this visual row (newline for real lines, last char for wrapped) Clicks past end of visible text position cursor here

Implementations

impl ViewLineMapping

pub fn source_byte_at_visual_col(&self, visual_col: usize) -> Option<usize>

Get source byte at a given visual column (O(1) for mouse clicks)

pub fn nearest_source_byte(&self, goal_col: usize) -> Option<usize>

Find the nearest source byte to a given visual column, searching outward. Returns the source byte at the closest valid visual column.

pub fn contains_byte(&self, byte_pos: usize) -> bool

Check if this visual row contains the given byte position

pub fn first_source_byte(&self) -> Option<usize>

Get the first source byte position in this row (if any)

Trait Implementations

impl Clone for ViewLineMapping

fn clone(&self) -> ViewLineMapping

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ViewLineMapping

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

Formats the value using the given formatter.

impl Default for ViewLineMapping

fn default() -> ViewLineMapping

Returns the “default value” for a type.