+ void draw_markers(QPainter &p,
+ const QRect &rect, unsigned int prefix);
+
+ void draw_viewport_background(QPainter &p, const QRect &rect);
+
+ void draw_viewport_foreground(QPainter &p, const QRect &rect);
+
+ void compute_text_size(QPainter &p, unsigned int prefix);
+
+ std::pair<float, float> get_cursor_offsets() const;