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