line->set_ignore_events (true);
}
- line->set_x0 (xpos);
- line->set_x1 (xpos);
+ /* move to 0.5 offset to ensure single pixel lines (see Cairo
+ * FAQ for info on why we do this).
+ */
+
+ line->set_x0 (xpos + 0.5);
+ line->set_x1 (xpos + 0.5);
line->set_y0 (0.0);
line->set_y1 (_height);
line->set_outline_color (color);