1 #include <signal.h>
2 #include <stdbool.h>
3
4 #include "../../util/cache.h"
5 #include "../../util/debug.h"
6 #include "../browser.h"
7 #include "../helpline.h"
8 #include "../ui.h"
9 #include "../util.h"
10 #include "../libslang.h"
11 #include "../keysyms.h"
12
13 static volatile int ui__need_resize;
14
15 extern struct perf_error_ops perf_tui_eops;
16
17 extern void hist_browser__init_hpp(void);
18
ui__refresh_dimensions(bool force)19 void ui__refresh_dimensions(bool force)
20 {
21 if (force || ui__need_resize) {
22 ui__need_resize = 0;
23 pthread_mutex_lock(&ui__lock);
24 SLtt_get_screen_size();
25 SLsmg_reinit_smg();
26 pthread_mutex_unlock(&ui__lock);
27 }
28 }
29
ui__sigwinch(int sig __maybe_unused)30 static void ui__sigwinch(int sig __maybe_unused)
31 {
32 ui__need_resize = 1;
33 }
34
ui__setup_sigwinch(void)35 static void ui__setup_sigwinch(void)
36 {
37 static bool done;
38
39 if (done)
40 return;
41
42 done = true;
43 pthread__unblock_sigwinch();
44 signal(SIGWINCH, ui__sigwinch);
45 }
46
ui__getch(int delay_secs)47 int ui__getch(int delay_secs)
48 {
49 struct timeval timeout, *ptimeout = delay_secs ? &timeout : NULL;
50 fd_set read_set;
51 int err, key;
52
53 ui__setup_sigwinch();
54
55 FD_ZERO(&read_set);
56 FD_SET(0, &read_set);
57
58 if (delay_secs) {
59 timeout.tv_sec = delay_secs;
60 timeout.tv_usec = 0;
61 }
62
63 err = select(1, &read_set, NULL, NULL, ptimeout);
64
65 if (err == 0)
66 return K_TIMER;
67
68 if (err == -1) {
69 if (errno == EINTR)
70 return K_RESIZE;
71 return K_ERROR;
72 }
73
74 key = SLang_getkey();
75 if (key != K_ESC)
76 return key;
77
78 FD_ZERO(&read_set);
79 FD_SET(0, &read_set);
80 timeout.tv_sec = 0;
81 timeout.tv_usec = 20;
82 err = select(1, &read_set, NULL, NULL, &timeout);
83 if (err == 0)
84 return K_ESC;
85
86 SLang_ungetkey(key);
87 return SLkp_getkey();
88 }
89
ui__signal(int sig)90 static void ui__signal(int sig)
91 {
92 ui__exit(false);
93 psignal(sig, "perf");
94 exit(0);
95 }
96
ui__init(void)97 int ui__init(void)
98 {
99 int err;
100
101 SLutf8_enable(-1);
102 SLtt_get_terminfo();
103 SLtt_get_screen_size();
104
105 err = SLsmg_init_smg();
106 if (err < 0)
107 goto out;
108 err = SLang_init_tty(0, 0, 0);
109 if (err < 0)
110 goto out;
111
112 err = SLkp_init();
113 if (err < 0) {
114 pr_err("TUI initialization failed.\n");
115 goto out;
116 }
117
118 SLkp_define_keysym((char *)"^(kB)", SL_KEY_UNTAB);
119
120 ui_helpline__init();
121 ui_browser__init();
122 ui_progress__init();
123
124 signal(SIGSEGV, ui__signal);
125 signal(SIGFPE, ui__signal);
126 signal(SIGINT, ui__signal);
127 signal(SIGQUIT, ui__signal);
128 signal(SIGTERM, ui__signal);
129
130 perf_error__register(&perf_tui_eops);
131
132 hist_browser__init_hpp();
133 out:
134 return err;
135 }
136
ui__exit(bool wait_for_ok)137 void ui__exit(bool wait_for_ok)
138 {
139 if (wait_for_ok)
140 ui__question_window("Fatal Error",
141 ui_helpline__last_msg,
142 "Press any key...", 0);
143
144 SLtt_set_cursor_visibility(1);
145 SLsmg_refresh();
146 SLsmg_reset_smg();
147 SLang_reset_tty();
148
149 perf_error__unregister(&perf_tui_eops);
150 }
151