1#include <err.h>
2#include <stdlib.h>
3#include <string.h>
4#include <xcb/xcb.h>
5#include <xcb/xcb_aux.h>
6
7#include "util.h"
8
9void
10init_xcb(xcb_connection_t **con)
11{
12 *con = xcb_connect(NULL, NULL);
13 if (xcb_connection_has_error(*con))
14 errx(1, "unable connect to the X server");
15}
16
17void
18kill_xcb(xcb_connection_t **con)
19{
20 if (*con)
21 xcb_disconnect(*con);
22}
23
24void
25get_screen(xcb_connection_t *con, xcb_screen_t **scr)
26{
27 *scr = xcb_setup_roots_iterator(xcb_get_setup(con)).data;
28 if (*scr == NULL)
29 errx(1, "unable to retrieve screen informations");
30}
31
32int
33exists(xcb_connection_t *con, xcb_window_t w)
34{
35 xcb_get_window_attributes_cookie_t c;
36 xcb_get_window_attributes_reply_t *r;
37
38 c = xcb_get_window_attributes(con, w);
39 r = xcb_get_window_attributes_reply(con, c, NULL);
40
41 if (r == NULL)
42 return 0;
43
44 free(r);
45 return 1;
46}
47
48int
49mapped(xcb_connection_t *con, xcb_window_t w)
50{
51 int ms;
52 xcb_get_window_attributes_cookie_t c;
53 xcb_get_window_attributes_reply_t *r;
54
55 c = xcb_get_window_attributes(con, w);
56 r = xcb_get_window_attributes_reply(con, c, NULL);
57
58 if (r == NULL)
59 return 0;
60
61 ms = r->map_state;
62
63 free(r);
64 return ms == XCB_MAP_STATE_VIEWABLE;
65}
66
67int
68ignore(xcb_connection_t *con, xcb_window_t w)
69{
70 int or;
71 xcb_get_window_attributes_cookie_t c;
72 xcb_get_window_attributes_reply_t *r;
73
74 c = xcb_get_window_attributes(con, w);
75 r = xcb_get_window_attributes_reply(con, c, NULL);
76
77 if (r == NULL)
78 return 0;
79
80 or = r->override_redirect;
81
82 free(r);
83 return or;
84}
85
86int
87get_windows(xcb_connection_t *con, xcb_window_t w, xcb_window_t **l)
88{
89 uint32_t childnum = 0;
90 xcb_query_tree_cookie_t c;
91 xcb_query_tree_reply_t *r;
92
93 c = xcb_query_tree(con, w);
94 r = xcb_query_tree_reply(con, c, NULL);
95 if (r == NULL)
96 errx(1, "0x%08x: no such window", w);
97
98 *l = malloc(sizeof(xcb_window_t) * r->children_len);
99 memcpy(*l, xcb_query_tree_children(r),
100 sizeof(xcb_window_t) * r->children_len);
101
102 childnum = r->children_len;
103
104 free(r);
105 return childnum;
106}