tools/perf/ui/tui/util.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <signal.h>
   3 #include <stdbool.h>
   4 #include <string.h>
   5 #include <stdlib.h>
   6 #include <sys/ttydefaults.h>
   7
   8 #include "../browser.h"
   9 #include "../keysyms.h"
  10 #include "../helpline.h"
  11 #include "../ui.h"
  12 #include "../util.h"
  13 #include "../libslang.h"
  14
  15 static void ui_browser__argv_write(struct ui_browser *browser,
  16                                    void *entry, int row)
  17 {
  18         char **arg = entry;
  19         bool current_entry = ui_browser__is_current_entry(browser, row);
  20
  21         ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
  22                                                        HE_COLORSET_NORMAL);
  23         ui_browser__write_nstring(browser, *arg, browser->width);
  24 }
  25
  26 static int popup_menu__run(struct ui_browser *menu, int *keyp)
  27 {
  28         int key;
  29
  30         if (ui_browser__show(menu, " ", "ESC: exit, ENTER|->: Select option") < 0)
  31                 return -1;
  32
  33         while (1) {
  34                 key = ui_browser__run(menu, 0);
  35
  36                 switch (key) {
  37                 case K_RIGHT:
  38                 case K_ENTER:
  39                         key = menu->index;
  40                         break;
  41                 case K_LEFT:
  42                 case K_ESC:
  43                 case 'q':
  44                 case CTRL('c'):
  45                         key = -1;
  46                         break;
  47                 default:
  48                         if (keyp) {
  49                                 *keyp = key;
  50                                 key = menu->nr_entries;
  51                                 break;
  52                         }
  53                         continue;
  54                 }
  55
  56                 break;
  57         }
  58
  59         ui_browser__hide(menu);
  60         return key;
  61 }
  62
  63 int ui__popup_menu(int argc, char * const argv[], int *keyp)
  64 {
  65         struct ui_browser menu = {
  66                 .entries    = (void *)argv,
  67                 .refresh    = ui_browser__argv_refresh,
  68                 .seek       = ui_browser__argv_seek,
  69                 .write      = ui_browser__argv_write,
  70                 .nr_entries = argc,
  71         };
  72         return popup_menu__run(&menu, keyp);
  73 }
  74
  75 int ui_browser__input_window(const char *title, const char *text, char *input,
  76                              const char *exit_msg, int delay_secs)
  77 {
  78         int x, y, len, key;
  79         int max_len = 60, nr_lines = 0;
  80         static char buf[50];
  81         const char *t;
  82
  83         t = text;
  84         while (1) {
  85                 const char *sep = strchr(t, '\n');
  86
  87                 if (sep == NULL)
  88                         sep = strchr(t, '\0');
  89                 len = sep - t;
  90                 if (max_len < len)
  91                         max_len = len;
  92                 ++nr_lines;
  93                 if (*sep == '\0')
  94                         break;
  95                 t = sep + 1;
  96         }
  97
  98         pthread_mutex_lock(&ui__lock);
  99
 100         max_len += 2;
 101         nr_lines += 8;
 102         y = SLtt_Screen_Rows / 2 - nr_lines / 2;
 103         x = SLtt_Screen_Cols / 2 - max_len / 2;
 104
 105         SLsmg_set_color(0);
 106         SLsmg_draw_box(y, x++, nr_lines, max_len);
 107         if (title) {
 108                 SLsmg_gotorc(y, x + 1);
 109                 SLsmg_write_string((char *)title);
 110         }
 111         SLsmg_gotorc(++y, x);
 112         nr_lines -= 7;
 113         max_len -= 2;
 114         SLsmg_write_wrapped_string((unsigned char *)text, y, x,
 115                                    nr_lines, max_len, 1);
 116         y += nr_lines;
 117         len = 5;
 118         while (len--) {
 119                 SLsmg_gotorc(y + len - 1, x);
 120                 SLsmg_write_nstring((char *)" ", max_len);
 121         }
 122         SLsmg_draw_box(y++, x + 1, 3, max_len - 2);
 123
 124         SLsmg_gotorc(y + 3, x);
 125         SLsmg_write_nstring((char *)exit_msg, max_len);
 126         SLsmg_refresh();
 127
 128         pthread_mutex_unlock(&ui__lock);
 129
 130         x += 2;
 131         len = 0;
 132         key = ui__getch(delay_secs);
 133         while (key != K_TIMER && key != K_ENTER && key != K_ESC) {
 134                 pthread_mutex_lock(&ui__lock);
 135
 136                 if (key == K_BKSPC) {
 137                         if (len == 0) {
 138                                 pthread_mutex_unlock(&ui__lock);
 139                                 goto next_key;
 140                         }
 141                         SLsmg_gotorc(y, x + --len);
 142                         SLsmg_write_char(' ');
 143                 } else {
 144                         buf[len] = key;
 145                         SLsmg_gotorc(y, x + len++);
 146                         SLsmg_write_char(key);
 147                 }
 148                 SLsmg_refresh();
 149
 150                 pthread_mutex_unlock(&ui__lock);
 151
 152                 /* XXX more graceful overflow handling needed */
 153                 if (len == sizeof(buf) - 1) {
 154                         ui_helpline__push("maximum size of symbol name reached!");
 155                         key = K_ENTER;
 156                         break;
 157                 }
 158 next_key:
 159                 key = ui__getch(delay_secs);
 160         }
 161
 162         buf[len] = '\0';
 163         strncpy(input, buf, len+1);
 164         return key;
 165 }
 166
 167 void __ui__info_window(const char *title, const char *text, const char *exit_msg)
 168 {
 169         int x, y;
 170         int max_len = 0, nr_lines = 0;
 171         const char *t;
 172
 173         t = text;
 174         while (1) {
 175                 const char *sep = strchr(t, '\n');
 176                 int len;
 177
 178                 if (sep == NULL)
 179                         sep = strchr(t, '\0');
 180                 len = sep - t;
 181                 if (max_len < len)
 182                         max_len = len;
 183                 ++nr_lines;
 184                 if (*sep == '\0')
 185                         break;
 186                 t = sep + 1;
 187         }
 188
 189         max_len += 2;
 190         nr_lines += 2;
 191         if (exit_msg)
 192                 nr_lines += 2;
 193         y = SLtt_Screen_Rows / 2 - nr_lines / 2,
 194         x = SLtt_Screen_Cols / 2 - max_len / 2;
 195
 196         SLsmg_set_color(0);
 197         SLsmg_draw_box(y, x++, nr_lines, max_len);
 198         if (title) {
 199                 SLsmg_gotorc(y, x + 1);
 200                 SLsmg_write_string((char *)title);
 201         }
 202         SLsmg_gotorc(++y, x);
 203         if (exit_msg)
 204                 nr_lines -= 2;
 205         max_len -= 2;
 206         SLsmg_write_wrapped_string((unsigned char *)text, y, x,
 207                                    nr_lines, max_len, 1);
 208         if (exit_msg) {
 209                 SLsmg_gotorc(y + nr_lines - 2, x);
 210                 SLsmg_write_nstring((char *)" ", max_len);
 211                 SLsmg_gotorc(y + nr_lines - 1, x);
 212                 SLsmg_write_nstring((char *)exit_msg, max_len);
 213         }
 214 }
 215
 216 void ui__info_window(const char *title, const char *text)
 217 {
 218         pthread_mutex_lock(&ui__lock);
 219         __ui__info_window(title, text, NULL);
 220         SLsmg_refresh();
 221         pthread_mutex_unlock(&ui__lock);
 222 }
 223
 224 int ui__question_window(const char *title, const char *text,
 225                         const char *exit_msg, int delay_secs)
 226 {
 227         pthread_mutex_lock(&ui__lock);
 228         __ui__info_window(title, text, exit_msg);
 229         SLsmg_refresh();
 230         pthread_mutex_unlock(&ui__lock);
 231         return ui__getch(delay_secs);
 232 }
 233
 234 int ui__help_window(const char *text)
 235 {
 236         return ui__question_window("Help", text, "Press any key...", 0);
 237 }
 238
 239 int ui__dialog_yesno(const char *msg)
 240 {
 241         return ui__question_window(NULL, msg, "Enter: Yes, ESC: No", 0);
 242 }
 243
 244 static int __ui__warning(const char *title, const char *format, va_list args)
 245 {
 246         char *s;
 247
 248         if (vasprintf(&s, format, args) > 0) {
 249                 int key;
 250
 251                 key = ui__question_window(title, s, "Press any key...", 0);
 252                 free(s);
 253                 return key;
 254         }
 255
 256         fprintf(stderr, "%s\n", title);
 257         vfprintf(stderr, format, args);
 258         return K_ESC;
 259 }
 260
 261 static int perf_tui__error(const char *format, va_list args)
 262 {
 263         return __ui__warning("Error:", format, args);
 264 }
 265
 266 static int perf_tui__warning(const char *format, va_list args)
 267 {
 268         return __ui__warning("Warning:", format, args);
 269 }
 270
 271 struct perf_error_ops perf_tui_eops = {
 272         .error          = perf_tui__error,
 273         .warning        = perf_tui__warning,
 274 };