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 int min(int a, int b);
38 int max(int a, int b);
39 bool rect_contains(Rect rect, uint32_t x, uint32_t y);
42 * Updates *destination with new_value and returns true if it was changed or false
46 bool update_if_necessary(uint32_t *destination, const uint32_t new_value);
49 * Safe-wrapper around malloc which exits if malloc returns NULL (meaning that
50 * there is no more memory available)
53 void *smalloc(size_t size);
56 * Safe-wrapper around calloc which exits if malloc returns NULL (meaning that
57 * there is no more memory available)
60 void *scalloc(size_t size);
63 * Safe-wrapper around realloc which exits if realloc returns NULL (meaning
64 * that there is no more memory available).
67 void *srealloc(void *ptr, 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 * Starts the given application by passing it through a shell. We use double
78 * fork to avoid zombie processes. As the started application’s parent exits
79 * (immediately), the application is reparented to init (process-id 1), which
80 * correctly handles childs, so we don’t have to do it :-).
82 * The shell is determined by looking for the SHELL environment variable. If
83 * it does not exist, /bin/sh is used.
86 void start_application(const char *command);
89 * Checks a generic cookie for errors and quits with the given message if
93 void check_error(xcb_connection_t *conn, xcb_void_cookie_t cookie,
97 * Converts the given string to UCS-2 big endian for use with
98 * xcb_image_text_16(). The amount of real glyphs is stored in real_strlen, a
99 * buffer containing the UCS-2 encoded string (16 bit per glyph) is
100 * returned. It has to be freed when done.
103 char *convert_utf8_to_ucs2(char *input, int *real_strlen);
107 * Returns the client which comes next in focus stack (= was selected before) for
108 * the given container, optionally excluding the given client.
111 Client *get_last_focused_client(xcb_connection_t *conn, Container *container,
117 * Sets the given client as focused by updating the data structures correctly,
118 * updating the X input focus and finally re-decorating both windows (to
119 * signalize the user the new focus situation)
122 void set_focus(xcb_connection_t *conn, Client *client, bool set_anyways);
125 * Called when the user switches to another mode or when the container is
126 * destroyed and thus needs to be cleaned up.
129 void leave_stack_mode(xcb_connection_t *conn, Container *container);
132 * Switches the layout of the given container taking care of the necessary
136 void switch_layout_mode(xcb_connection_t *conn, Container *container, int mode);
139 * Gets the first matching client for the given window class/window title.
140 * If the paramater specific is set to a specific client, only this one
144 Client *get_matching_client(xcb_connection_t *conn,
145 const char *window_classtitle, Client *specific);
149 * Restart i3 in-place
150 * appends -a to argument list to disable autostart
155 #if defined(__OpenBSD__)
156 /* OpenBSD does not provide memmem(), so we provide FreeBSD’s implementation */
157 void *memmem(const void *l, size_t l_len, const void *s, size_t s_len);