Function visual_move_down

src/text_input.rs:1688–1696

Navigate cursor one visual line down. Returns the new global cursor position.

(visual_lines: &[VisualLine], cursor_pos: usize, text_len: usize)

/// Navigate cursor one visual line down. Returns the new global cursor position.
pub fn visual_move_down(visual_lines: &[VisualLine], cursor_pos: usize, text_len: usize) -> usize {
    let (line, col) = cursor_to_visual_pos(visual_lines, cursor_pos);
    if line >= visual_lines.len() - 1 {
        return text_len; // Already on last visual line → move to end
    }
    let target_line = &visual_lines[line + 1];
    let new_col = col.min(target_line.char_count);
    target_line.global_char_start + new_col
}

/// Move to start of current visual line. Returns the new global cursor position.
pub fn visual_line_home(visual_lines: &[VisualLine], cursor_pos: usize) -> usize {