4 * i3 - an improved dynamic tiling window manager
6 * (c) 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 /** ##__VA_ARGS__ means: leave out __VA_ARGS__ completely if it is empty, that
38 is, delete the preceding comma */
39 #define LOG(fmt, ...) slog("%s:%s:%d - " fmt, __FILE__, __FUNCTION__, __LINE__, ##__VA_ARGS__)
41 TAILQ_HEAD(keyvalue_table_head, keyvalue_element);
42 extern struct keyvalue_table_head by_parent;
43 extern struct keyvalue_table_head by_child;
45 int min(int a, int b);
46 int max(int a, int b);
49 * Logs the given message to stdout while prefixing the current time to it.
50 * This is to be called by LOG() which includes filename/linenumber
53 void slog(char *fmt, ...);
56 * Safe-wrapper around malloc which exits if malloc returns NULL (meaning that
57 * there is no more memory available)
60 void *smalloc(size_t size);
63 * Safe-wrapper around calloc which exits if malloc returns NULL (meaning that
64 * there is no more memory available)
67 void *scalloc(size_t size);
70 * Safe-wrapper around strdup which exits if malloc returns NULL (meaning that
71 * there is no more memory available)
74 char *sstrdup(const char *str);
77 * Inserts an element into the given keyvalue-table using the given key.
80 bool table_put(struct keyvalue_table_head *head, uint32_t key, void *value);
83 * Removes the element from the given keyvalue-table with the given key and
87 void *table_remove(struct keyvalue_table_head *head, uint32_t key);
90 * Returns the value of the element of the given keyvalue-table with the given
94 void *table_get(struct keyvalue_table_head *head, uint32_t key);
97 * Starts the given application by passing it through a shell. We use double
98 * fork to avoid zombie processes. As the started application’s parent exits
99 * (immediately), the application is reparented to init (process-id 1), which
100 * correctly handles childs, so we don’t have to do it :-).
102 * The shell is determined by looking for the SHELL environment variable. If
103 * it does not exist, /bin/sh is used.
106 void start_application(const char *command);
109 * Checks a generic cookie for errors and quits with the given message if
110 * there was an error.
113 void check_error(xcb_connection_t *conn, xcb_void_cookie_t cookie,
117 * Converts the given string to UCS-2 big endian for use with
118 * xcb_image_text_16(). The amount of real glyphs is stored in real_strlen, a
119 * buffer containing the UCS-2 encoded string (16 bit per glyph) is
120 * returned. It has to be freed when done.
123 char *convert_utf8_to_ucs2(char *input, int *real_strlen);
126 * Returns the client which comes next in focus stack (= was selected before) for
127 * the given container, optionally excluding the given client.
130 Client *get_last_focused_client(xcb_connection_t *conn, Container *container,
134 * Sets the given client as focused by updating the data structures correctly,
135 * updating the X input focus and finally re-decorating both windows (to
136 * signalize the user the new focus situation)
139 void set_focus(xcb_connection_t *conn, Client *client, bool set_anyways);
142 * Called when the user switches to another mode or when the container is
143 * destroyed and thus needs to be cleaned up.
146 void leave_stack_mode(xcb_connection_t *conn, Container *container);
149 * Switches the layout of the given container taking care of the necessary
153 void switch_layout_mode(xcb_connection_t *conn, Container *container, int mode);
156 * Gets the first matching client for the given window class/window title.
157 * If the paramater specific is set to a specific client, only this one
161 Client *get_matching_client(xcb_connection_t *conn,
162 const char *window_classtitle, Client *specific);
164 #if defined(__OpenBSD__)
165 /* OpenBSD does not provide memmem(), so we provide FreeBSD’s implementation */
166 void *memmem(const void *l, size_t l_len, const void *s, size_t s_len);