+/* Draw the given dataset as bars if there is room for that.
+ *
+ * Or, if the bars would run into each other, use a line instead.
+ */
+static void
+_draw_data_bars_or_line (acre_t *acre, acre_data_t *data)
+{
+ cairo_t *cr = acre->cr;
+ double ignored, width;
+
+ /* Check device-space width available for inter-bar padding. */
+ width = 1.0 - BARS_WIDTH;
+ ignored = 0.0;
+ cairo_user_to_device_distance (cr, &width, &ignored);
+
+ /* If padding is less than two pixels, draw with a line instead. */
+ if (width < 2.0)
+ _draw_data_line (acre, data);
+ else
+ _draw_data_bars (acre, data);
+}
+