4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
19 #define die(...) errx(EXIT_FAILURE, __VA_ARGS__);
20 #define exit_if_null(pointer, ...) { if (pointer == NULL) die(__VA_ARGS__); }
21 #define STARTS_WITH(string, needle) (strncasecmp(string, needle, strlen(needle)) == 0)
22 #define CIRCLEQ_NEXT_OR_NULL(head, elm, field) (CIRCLEQ_NEXT(elm, field) != CIRCLEQ_END(head) ? \
23 CIRCLEQ_NEXT(elm, field) : NULL)
24 #define CIRCLEQ_PREV_OR_NULL(head, elm, field) (CIRCLEQ_PREV(elm, field) != CIRCLEQ_END(head) ? \
25 CIRCLEQ_PREV(elm, field) : NULL)
26 #define FOR_TABLE(workspace) \
27 for (int cols = 0; cols < (workspace)->cols; cols++) \
28 for (int rows = 0; rows < (workspace)->rows; rows++)
29 #define FREE(pointer) do { \
30 if (pointer != NULL) { \
37 TAILQ_HEAD(keyvalue_table_head, keyvalue_element);
38 extern struct keyvalue_table_head by_parent;
39 extern struct keyvalue_table_head by_child;
41 int min(int a, int b);
42 int max(int a, int b);
45 * Updates *destination with new_value and returns true if it was changed or false
49 bool update_if_necessary(uint32_t *destination, const uint32_t new_value);
52 * Safe-wrapper around malloc which exits if malloc returns NULL (meaning that
53 * there is no more memory available)
56 void *smalloc(size_t size);
59 * Safe-wrapper around calloc which exits if malloc returns NULL (meaning that
60 * there is no more memory available)
63 void *scalloc(size_t size);
66 * Safe-wrapper around strdup which exits if malloc returns NULL (meaning that
67 * there is no more memory available)
70 char *sstrdup(const char *str);
73 * Inserts an element into the given keyvalue-table using the given key.
76 bool table_put(struct keyvalue_table_head *head, uint32_t key, void *value);
79 * Removes the element from the given keyvalue-table with the given key and
83 void *table_remove(struct keyvalue_table_head *head, uint32_t key);
86 * Returns the value of the element of the given keyvalue-table with the given
90 void *table_get(struct keyvalue_table_head *head, uint32_t key);
93 * Starts the given application by passing it through a shell. We use double
94 * fork to avoid zombie processes. As the started application’s parent exits
95 * (immediately), the application is reparented to init (process-id 1), which
96 * correctly handles childs, so we don’t have to do it :-).
98 * The shell is determined by looking for the SHELL environment variable. If
99 * it does not exist, /bin/sh is used.
102 void start_application(const char *command);
105 * Checks a generic cookie for errors and quits with the given message if
106 * there was an error.
109 void check_error(xcb_connection_t *conn, xcb_void_cookie_t cookie,
113 * Converts the given string to UCS-2 big endian for use with
114 * xcb_image_text_16(). The amount of real glyphs is stored in real_strlen, a
115 * buffer containing the UCS-2 encoded string (16 bit per glyph) is
116 * returned. It has to be freed when done.
119 char *convert_utf8_to_ucs2(char *input, int *real_strlen);
122 * Returns the client which comes next in focus stack (= was selected before) for
123 * the given container, optionally excluding the given client.
126 Client *get_last_focused_client(xcb_connection_t *conn, Container *container,
130 * Sets the given client as focused by updating the data structures correctly,
131 * updating the X input focus and finally re-decorating both windows (to
132 * signalize the user the new focus situation)
135 void set_focus(xcb_connection_t *conn, Client *client, bool set_anyways);
138 * Called when the user switches to another mode or when the container is
139 * destroyed and thus needs to be cleaned up.
142 void leave_stack_mode(xcb_connection_t *conn, Container *container);
145 * Switches the layout of the given container taking care of the necessary
149 void switch_layout_mode(xcb_connection_t *conn, Container *container, int mode);
152 * Gets the first matching client for the given window class/window title.
153 * If the paramater specific is set to a specific client, only this one
157 Client *get_matching_client(xcb_connection_t *conn,
158 const char *window_classtitle, Client *specific);
161 * Restart i3 in-place
162 * appends -a to argument list to disable autostart
167 #if defined(__OpenBSD__)
168 /* OpenBSD does not provide memmem(), so we provide FreeBSD’s implementation */
169 void *memmem(const void *l, size_t l_len, const void *s, size_t s_len);