+Output *get_output_containing(unsigned int x, unsigned int y);
+
+/**
+ * Returns the active output which contains the midpoint of the given rect. If
+ * such an output doesn't exist, returns the output which contains most of the
+ * rectangle or NULL if there is no output which intersects with it.
+ *
+ */
+Output *get_output_from_rect(Rect rect);
+
+/**
+ * Returns the active output which spans exactly the area specified by
+ * rect or NULL if there is no output like this.
+ *
+ */
+Output *get_output_with_dimensions(Rect rect);
+
+/**
+ * In output_containing_rect, we check if any active output contains part of the container.
+ * We do this by checking if the output rect is intersected by the Rect.
+ * This is the 2-dimensional counterpart of get_output_containing.
+ * Returns the output with the maximum intersecting area.
+ *
+ */
+Output *output_containing_rect(Rect rect);