diff options
Diffstat (limited to 'src/data.h')
| -rw-r--r-- | src/data.h | 24 |
1 files changed, 22 insertions, 2 deletions
@@ -84,8 +84,28 @@ struct rp_action /* void (*func)(void *); */ }; -extern rp_window *rp_window_head, *rp_window_tail; -extern rp_window *rp_current_window; +/* These _sentinel pointers point to a special rp_window whose next + pointer points to the head of the list and whose prev pointer + points to the tail. This is done to simplify removing an element + from the list: since there are no head and tail global variable + pointers that need to be updated, functions that manipulate + elements in a list don't need to know what list they belong to. The + last element's next pointer points to the sentinel as does the + first element's prev pointer. An empty list is represented by the + sentinel's prev and next pointers pointing to itself. */ + +/* A list of mapped windows. These windows show up in the window + list and have a number assigned to them. */ +extern rp_window *rp_mapped_window_sentinel; + +/* A list of unmapped windows. These windows do not have a number + assigned to them and are not visible/active. */ +extern rp_window *rp_unmapped_window_sentinel; + +/* Pointer to the currently focused window. Points to an element in + the mapped window list. NULL if there are no mapped windows. */ +extern rp_window *rp_current_window; + extern screen_info *screens; extern int num_screens; |