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);
40 Rect rect_add(Rect a, Rect b);
43 * Updates *destination with new_value and returns true if it was changed or false
47 bool update_if_necessary(uint32_t *destination, const uint32_t new_value);
50 * Safe-wrapper around malloc which exits if malloc returns NULL (meaning that
51 * there is no more memory available)
54 void *smalloc(size_t size);
57 * Safe-wrapper around calloc which exits if malloc returns NULL (meaning that
58 * there is no more memory available)
61 void *scalloc(size_t size);
64 * Safe-wrapper around realloc which exits if realloc returns NULL (meaning
65 * that there is no more memory available).
68 void *srealloc(void *ptr, size_t size);
71 * Safe-wrapper around strdup which exits if malloc returns NULL (meaning that
72 * there is no more memory available)
75 char *sstrdup(const char *str);
78 * Starts the given application by passing it through a shell. We use double
79 * fork to avoid zombie processes. As the started application’s parent exits
80 * (immediately), the application is reparented to init (process-id 1), which
81 * correctly handles childs, so we don’t have to do it :-).
83 * The shell is determined by looking for the SHELL environment variable. If
84 * it does not exist, /bin/sh is used.
87 void start_application(const char *command);
90 * Checks a generic cookie for errors and quits with the given message if
94 void check_error(xcb_connection_t *conn, xcb_void_cookie_t cookie,
98 * Converts the given string to UCS-2 big endian for use with
99 * xcb_image_text_16(). The amount of real glyphs is stored in real_strlen, a
100 * buffer containing the UCS-2 encoded string (16 bit per glyph) is
101 * returned. It has to be freed when done.
104 char *convert_utf8_to_ucs2(char *input, int *real_strlen);
107 * Restart i3 in-place
108 * appends -a to argument list to disable autostart