Method cursor_visual_position

src/apps/cli/src/ui/text_input.rs:246–279

Compute cursor visual position: (visual_row, visual_col) considering wrap.

(&self, inner_width: u16, prefix_w: usize)

    /// Compute cursor visual position: (visual_row, visual_col) considering wrap.
    fn cursor_visual_position(&self, inner_width: u16, prefix_w: usize) -> (usize, usize) {
        // Use cursor_line_col() to get accurate logical line position
        let (cursor_logical_line, _, line_start) = self.cursor_line_col();

        // Calculate display width of text before cursor on the current line only
        let byte_pos = self.char_pos_to_byte_pos(self.cursor);
        let line_start_byte = self.char_pos_to_byte_pos(line_start);
        let text_before_cursor = &self.input[line_start_byte..byte_pos];
        let cursor_col_w = text_before_cursor.width();

        let avail = Self::avail_width(inner_width, prefix_w);

        let mut visual_row = 0usize;
        for (i, logical_line) in self.input.split('\n').enumerate() {
            if i >= cursor_logical_line {
                break;
            }
            let text_w = logical_line.width();
            if text_w == 0 {
                visual_row += 1;
            } else {
                visual_row += (text_w + avail - 1) / avail;
            }
        }

        let extra_rows = if cursor_col_w > 0 {
            (cursor_col_w - 1) / avail
        } else {
            0
        };
        visual_row += extra_rows;
        let visual_col = prefix_w + cursor_col_w - extra_rows * avail;
        (visual_row, visual_col)
    }

    /// Update scroll_offset so the cursor stays visible within `visible_lines`.
    fn ensure_cursor_visible(&mut self, inner_width: u16, prefix_w: usize, visible_lines: usize) {