Struct Cursor 

pub struct Cursor {
    pub row: usize,
    pub col: usize,
    pub visual_line_index: usize,
    pub desired_visual_col: usize,
}

Fields

row: usize

col: usize

visual_line_index: usize

desired_visual_col: usize

Implementations

impl Cursor

pub fn new() -> Cursor

pub fn move_up(&mut self, buffer: &RopeBuffer, view: &View)

pub fn move_down(&mut self, buffer: &RopeBuffer, view: &View)

pub fn move_left(&mut self, buffer: &RopeBuffer, view: &View)

pub fn move_right(&mut self, buffer: &RopeBuffer, view: &View)

pub fn move_to_line_start(&mut self)

pub fn move_to_line_end(&mut self, buffer: &RopeBuffer, view: &View)

pub fn move_to_file_start(&mut self, _view: &View)

移動到文件開頭

pub fn move_to_file_end(&mut self, buffer: &RopeBuffer, view: &View)

移動到文件末尾

pub fn move_page_up( &mut self, buffer: &RopeBuffer, view: &View, effective_rows: usize, )

pub fn move_page_down( &mut self, buffer: &RopeBuffer, view: &View, effective_rows: usize, )

pub fn move_to_line(&mut self, buffer: &RopeBuffer, view: &View, line: usize)

pub fn char_position(&self, buffer: &RopeBuffer) -> usize

獲取光標在文本中的絕對字符位置

pub fn set_position( &mut self, buffer: &RopeBuffer, view: &View, row: usize, col: usize, )

設置光標位置並同步視覺狀態 這是統一的光標位置設置方法，確保邏輯和視覺狀態一致

pub fn reset_to_line_start(&mut self)

重置到行首（用於換行等操作）

Trait Implementations

impl Clone for Cursor

fn clone(&self) -> Cursor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cursor

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

Formats the value using the given formatter.

impl Default for Cursor

fn default() -> Cursor

Returns the “default value” for a type.

impl Copy for Cursor