1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
#include "gui.h"
#include "gui_defs.h"
#include "x.h"
#include <sys/select.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
void gui_loop(gui *_gui)
{
struct gui *g = _gui;
int xfd;
int eventfd;
int maxfd;
fd_set rd;
/* lock not necessary but there for consistency (when instrumenting x.c
* we need the gui to be locked when calling any function in x.c)
*/
glock(g);
xfd = x_connection_fd(g->x);
gunlock(g);
eventfd = g->event_pipe[0];
if (eventfd > xfd) maxfd = eventfd;
else maxfd = xfd;
while (1) {
glock(g);
x_flush(g->x);
gunlock(g);
FD_ZERO(&rd);
FD_SET(xfd, &rd);
FD_SET(eventfd, &rd);
if (select(maxfd+1, &rd, NULL, NULL, NULL) == -1)
ERR("select: %s\n", strerror(errno));
glock(g);
if (FD_ISSET(xfd, &rd))
x_events(g);
if (FD_ISSET(eventfd, &rd)) {
char c[256];
if (read(eventfd, c, 256)); /* for no gcc warnings */
}
gui_events(g);
if (g->repainted) {
struct widget_list *cur;
g->repainted = 0;
cur = g->toplevel;
while (cur) {
struct toplevel_window_widget *w =
(struct toplevel_window_widget *)cur->item;
x_draw(g->x, w->x);
cur = cur->next;
}
}
gunlock(g);
}
}