1 /* 2 * util.c 3 * 4 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk) 5 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com) 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22 #include "dialog.h" 23 24 struct dialog_info dlg; 25 26 static void set_mono_theme(void) 27 { 28 dlg.screen.atr = A_NORMAL; 29 dlg.shadow.atr = A_NORMAL; 30 dlg.dialog.atr = A_NORMAL; 31 dlg.title.atr = A_BOLD; 32 dlg.border.atr = A_NORMAL; 33 dlg.button_active.atr = A_REVERSE; 34 dlg.button_inactive.atr = A_DIM; 35 dlg.button_key_active.atr = A_REVERSE; 36 dlg.button_key_inactive.atr = A_BOLD; 37 dlg.button_label_active.atr = A_REVERSE; 38 dlg.button_label_inactive.atr = A_NORMAL; 39 dlg.inputbox.atr = A_NORMAL; 40 dlg.inputbox_border.atr = A_NORMAL; 41 dlg.searchbox.atr = A_NORMAL; 42 dlg.searchbox_title.atr = A_BOLD; 43 dlg.searchbox_border.atr = A_NORMAL; 44 dlg.position_indicator.atr = A_BOLD; 45 dlg.menubox.atr = A_NORMAL; 46 dlg.menubox_border.atr = A_NORMAL; 47 dlg.item.atr = A_NORMAL; 48 dlg.item_selected.atr = A_REVERSE; 49 dlg.tag.atr = A_BOLD; 50 dlg.tag_selected.atr = A_REVERSE; 51 dlg.tag_key.atr = A_BOLD; 52 dlg.tag_key_selected.atr = A_REVERSE; 53 dlg.check.atr = A_BOLD; 54 dlg.check_selected.atr = A_REVERSE; 55 dlg.uarrow.atr = A_BOLD; 56 dlg.darrow.atr = A_BOLD; 57 } 58 59 #define DLG_COLOR(dialog, f, b, h) \ 60 do { \ 61 dlg.dialog.fg = (f); \ 62 dlg.dialog.bg = (b); \ 63 dlg.dialog.hl = (h); \ 64 } while (0) 65 66 static void set_classic_theme(void) 67 { 68 DLG_COLOR(screen, COLOR_CYAN, COLOR_BLUE, true); 69 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, true); 70 DLG_COLOR(dialog, COLOR_BLACK, COLOR_WHITE, false); 71 DLG_COLOR(title, COLOR_YELLOW, COLOR_WHITE, true); 72 DLG_COLOR(border, COLOR_WHITE, COLOR_WHITE, true); 73 DLG_COLOR(button_active, COLOR_WHITE, COLOR_BLUE, true); 74 DLG_COLOR(button_inactive, COLOR_BLACK, COLOR_WHITE, false); 75 DLG_COLOR(button_key_active, COLOR_WHITE, COLOR_BLUE, true); 76 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_WHITE, false); 77 DLG_COLOR(button_label_active, COLOR_YELLOW, COLOR_BLUE, true); 78 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_WHITE, true); 79 DLG_COLOR(inputbox, COLOR_BLACK, COLOR_WHITE, false); 80 DLG_COLOR(inputbox_border, COLOR_BLACK, COLOR_WHITE, false); 81 DLG_COLOR(searchbox, COLOR_BLACK, COLOR_WHITE, false); 82 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_WHITE, true); 83 DLG_COLOR(searchbox_border, COLOR_WHITE, COLOR_WHITE, true); 84 DLG_COLOR(position_indicator, COLOR_YELLOW, COLOR_WHITE, true); 85 DLG_COLOR(menubox, COLOR_BLACK, COLOR_WHITE, false); 86 DLG_COLOR(menubox_border, COLOR_WHITE, COLOR_WHITE, true); 87 DLG_COLOR(item, COLOR_BLACK, COLOR_WHITE, false); 88 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_BLUE, true); 89 DLG_COLOR(tag, COLOR_YELLOW, COLOR_WHITE, true); 90 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_BLUE, true); 91 DLG_COLOR(tag_key, COLOR_YELLOW, COLOR_WHITE, true); 92 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_BLUE, true); 93 DLG_COLOR(check, COLOR_BLACK, COLOR_WHITE, false); 94 DLG_COLOR(check_selected, COLOR_WHITE, COLOR_BLUE, true); 95 DLG_COLOR(uarrow, COLOR_GREEN, COLOR_WHITE, true); 96 DLG_COLOR(darrow, COLOR_GREEN, COLOR_WHITE, true); 97 } 98 99 static void set_blackbg_theme(void) 100 { 101 DLG_COLOR(screen, COLOR_RED, COLOR_BLACK, true); 102 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false); 103 DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false); 104 DLG_COLOR(title, COLOR_RED, COLOR_BLACK, false); 105 DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true); 106 107 DLG_COLOR(button_active, COLOR_YELLOW, COLOR_RED, false); 108 DLG_COLOR(button_inactive, COLOR_YELLOW, COLOR_BLACK, false); 109 DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_RED, true); 110 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_BLACK, false); 111 DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_RED, false); 112 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_BLACK, true); 113 114 DLG_COLOR(inputbox, COLOR_YELLOW, COLOR_BLACK, false); 115 DLG_COLOR(inputbox_border, COLOR_YELLOW, COLOR_BLACK, false); 116 117 DLG_COLOR(searchbox, COLOR_YELLOW, COLOR_BLACK, false); 118 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_BLACK, true); 119 DLG_COLOR(searchbox_border, COLOR_BLACK, COLOR_BLACK, true); 120 121 DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK, false); 122 123 DLG_COLOR(menubox, COLOR_YELLOW, COLOR_BLACK, false); 124 DLG_COLOR(menubox_border, COLOR_BLACK, COLOR_BLACK, true); 125 126 DLG_COLOR(item, COLOR_WHITE, COLOR_BLACK, false); 127 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_RED, false); 128 129 DLG_COLOR(tag, COLOR_RED, COLOR_BLACK, false); 130 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_RED, true); 131 DLG_COLOR(tag_key, COLOR_RED, COLOR_BLACK, false); 132 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED, true); 133 134 DLG_COLOR(check, COLOR_YELLOW, COLOR_BLACK, false); 135 DLG_COLOR(check_selected, COLOR_YELLOW, COLOR_RED, true); 136 137 DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false); 138 DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false); 139 } 140 141 static void set_bluetitle_theme(void) 142 { 143 set_classic_theme(); 144 DLG_COLOR(title, COLOR_BLUE, COLOR_WHITE, true); 145 DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_BLUE, true); 146 DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_BLUE, true); 147 DLG_COLOR(searchbox_title, COLOR_BLUE, COLOR_WHITE, true); 148 DLG_COLOR(position_indicator, COLOR_BLUE, COLOR_WHITE, true); 149 DLG_COLOR(tag, COLOR_BLUE, COLOR_WHITE, true); 150 DLG_COLOR(tag_key, COLOR_BLUE, COLOR_WHITE, true); 151 152 } 153 154 /* 155 * Select color theme 156 */ 157 static int set_theme(const char *theme) 158 { 159 int use_color = 1; 160 if (!theme) 161 set_bluetitle_theme(); 162 else if (strcmp(theme, "classic") == 0) 163 set_classic_theme(); 164 else if (strcmp(theme, "bluetitle") == 0) 165 set_bluetitle_theme(); 166 else if (strcmp(theme, "blackbg") == 0) 167 set_blackbg_theme(); 168 else if (strcmp(theme, "mono") == 0) 169 use_color = 0; 170 171 return use_color; 172 } 173 174 static void init_one_color(struct dialog_color *color) 175 { 176 static int pair = 0; 177 178 pair++; 179 init_pair(pair, color->fg, color->bg); 180 if (color->hl) 181 color->atr = A_BOLD | COLOR_PAIR(pair); 182 else 183 color->atr = COLOR_PAIR(pair); 184 } 185 186 static void init_dialog_colors(void) 187 { 188 init_one_color(&dlg.screen); 189 init_one_color(&dlg.shadow); 190 init_one_color(&dlg.dialog); 191 init_one_color(&dlg.title); 192 init_one_color(&dlg.border); 193 init_one_color(&dlg.button_active); 194 init_one_color(&dlg.button_inactive); 195 init_one_color(&dlg.button_key_active); 196 init_one_color(&dlg.button_key_inactive); 197 init_one_color(&dlg.button_label_active); 198 init_one_color(&dlg.button_label_inactive); 199 init_one_color(&dlg.inputbox); 200 init_one_color(&dlg.inputbox_border); 201 init_one_color(&dlg.searchbox); 202 init_one_color(&dlg.searchbox_title); 203 init_one_color(&dlg.searchbox_border); 204 init_one_color(&dlg.position_indicator); 205 init_one_color(&dlg.menubox); 206 init_one_color(&dlg.menubox_border); 207 init_one_color(&dlg.item); 208 init_one_color(&dlg.item_selected); 209 init_one_color(&dlg.tag); 210 init_one_color(&dlg.tag_selected); 211 init_one_color(&dlg.tag_key); 212 init_one_color(&dlg.tag_key_selected); 213 init_one_color(&dlg.check); 214 init_one_color(&dlg.check_selected); 215 init_one_color(&dlg.uarrow); 216 init_one_color(&dlg.darrow); 217 } 218 219 /* 220 * Setup for color display 221 */ 222 static void color_setup(const char *theme) 223 { 224 int use_color; 225 226 use_color = set_theme(theme); 227 if (use_color && has_colors()) { 228 start_color(); 229 init_dialog_colors(); 230 } else 231 set_mono_theme(); 232 } 233 234 /* 235 * Set window to attribute 'attr' 236 */ 237 void attr_clear(WINDOW * win, int height, int width, chtype attr) 238 { 239 int i, j; 240 241 wattrset(win, attr); 242 for (i = 0; i < height; i++) { 243 wmove(win, i, 0); 244 for (j = 0; j < width; j++) 245 waddch(win, ' '); 246 } 247 touchwin(win); 248 } 249 250 void dialog_clear(void) 251 { 252 attr_clear(stdscr, LINES, COLS, dlg.screen.atr); 253 /* Display background title if it exists ... - SLH */ 254 if (dlg.backtitle != NULL) { 255 int i; 256 257 wattrset(stdscr, dlg.screen.atr); 258 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle); 259 wmove(stdscr, 1, 1); 260 for (i = 1; i < COLS - 1; i++) 261 waddch(stdscr, ACS_HLINE); 262 } 263 wnoutrefresh(stdscr); 264 } 265 266 /* 267 * Do some initialization for dialog 268 */ 269 void init_dialog(const char *backtitle) 270 { 271 dlg.backtitle = backtitle; 272 color_setup(getenv("MENUCONFIG_COLOR")); 273 } 274 275 void reset_dialog(void) 276 { 277 initscr(); /* Init curses */ 278 keypad(stdscr, TRUE); 279 cbreak(); 280 noecho(); 281 dialog_clear(); 282 } 283 284 /* 285 * End using dialog functions. 286 */ 287 void end_dialog(void) 288 { 289 endwin(); 290 } 291 292 /* Print the title of the dialog. Center the title and truncate 293 * tile if wider than dialog (- 2 chars). 294 **/ 295 void print_title(WINDOW *dialog, const char *title, int width) 296 { 297 if (title) { 298 int tlen = MIN(width - 2, strlen(title)); 299 wattrset(dialog, dlg.title.atr); 300 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' '); 301 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen); 302 waddch(dialog, ' '); 303 } 304 } 305 306 /* 307 * Print a string of text in a window, automatically wrap around to the 308 * next line if the string is too long to fit on one line. Newline 309 * characters '\n' are replaced by spaces. We start on a new line 310 * if there is no room for at least 4 nonblanks following a double-space. 311 */ 312 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x) 313 { 314 int newl, cur_x, cur_y; 315 int i, prompt_len, room, wlen; 316 char tempstr[MAX_LEN + 1], *word, *sp, *sp2; 317 318 strcpy(tempstr, prompt); 319 320 prompt_len = strlen(tempstr); 321 322 /* 323 * Remove newlines 324 */ 325 for (i = 0; i < prompt_len; i++) { 326 if (tempstr[i] == '\n') 327 tempstr[i] = ' '; 328 } 329 330 if (prompt_len <= width - x * 2) { /* If prompt is short */ 331 wmove(win, y, (width - prompt_len) / 2); 332 waddstr(win, tempstr); 333 } else { 334 cur_x = x; 335 cur_y = y; 336 newl = 1; 337 word = tempstr; 338 while (word && *word) { 339 sp = index(word, ' '); 340 if (sp) 341 *sp++ = 0; 342 343 /* Wrap to next line if either the word does not fit, 344 or it is the first word of a new sentence, and it is 345 short, and the next word does not fit. */ 346 room = width - cur_x; 347 wlen = strlen(word); 348 if (wlen > room || 349 (newl && wlen < 4 && sp 350 && wlen + 1 + strlen(sp) > room 351 && (!(sp2 = index(sp, ' ')) 352 || wlen + 1 + (sp2 - sp) > room))) { 353 cur_y++; 354 cur_x = x; 355 } 356 wmove(win, cur_y, cur_x); 357 waddstr(win, word); 358 getyx(win, cur_y, cur_x); 359 cur_x++; 360 if (sp && *sp == ' ') { 361 cur_x++; /* double space */ 362 while (*++sp == ' ') ; 363 newl = 1; 364 } else 365 newl = 0; 366 word = sp; 367 } 368 } 369 } 370 371 /* 372 * Print a button 373 */ 374 void print_button(WINDOW * win, const char *label, int y, int x, int selected) 375 { 376 int i, temp; 377 378 wmove(win, y, x); 379 wattrset(win, selected ? dlg.button_active.atr 380 : dlg.button_inactive.atr); 381 waddstr(win, "<"); 382 temp = strspn(label, " "); 383 label += temp; 384 wattrset(win, selected ? dlg.button_label_active.atr 385 : dlg.button_label_inactive.atr); 386 for (i = 0; i < temp; i++) 387 waddch(win, ' '); 388 wattrset(win, selected ? dlg.button_key_active.atr 389 : dlg.button_key_inactive.atr); 390 waddch(win, label[0]); 391 wattrset(win, selected ? dlg.button_label_active.atr 392 : dlg.button_label_inactive.atr); 393 waddstr(win, (char *)label + 1); 394 wattrset(win, selected ? dlg.button_active.atr 395 : dlg.button_inactive.atr); 396 waddstr(win, ">"); 397 wmove(win, y, x + temp + 1); 398 } 399 400 /* 401 * Draw a rectangular box with line drawing characters 402 */ 403 void 404 draw_box(WINDOW * win, int y, int x, int height, int width, 405 chtype box, chtype border) 406 { 407 int i, j; 408 409 wattrset(win, 0); 410 for (i = 0; i < height; i++) { 411 wmove(win, y + i, x); 412 for (j = 0; j < width; j++) 413 if (!i && !j) 414 waddch(win, border | ACS_ULCORNER); 415 else if (i == height - 1 && !j) 416 waddch(win, border | ACS_LLCORNER); 417 else if (!i && j == width - 1) 418 waddch(win, box | ACS_URCORNER); 419 else if (i == height - 1 && j == width - 1) 420 waddch(win, box | ACS_LRCORNER); 421 else if (!i) 422 waddch(win, border | ACS_HLINE); 423 else if (i == height - 1) 424 waddch(win, box | ACS_HLINE); 425 else if (!j) 426 waddch(win, border | ACS_VLINE); 427 else if (j == width - 1) 428 waddch(win, box | ACS_VLINE); 429 else 430 waddch(win, box | ' '); 431 } 432 } 433 434 /* 435 * Draw shadows along the right and bottom edge to give a more 3D look 436 * to the boxes 437 */ 438 void draw_shadow(WINDOW * win, int y, int x, int height, int width) 439 { 440 int i; 441 442 if (has_colors()) { /* Whether terminal supports color? */ 443 wattrset(win, dlg.shadow.atr); 444 wmove(win, y + height, x + 2); 445 for (i = 0; i < width; i++) 446 waddch(win, winch(win) & A_CHARTEXT); 447 for (i = y + 1; i < y + height + 1; i++) { 448 wmove(win, i, x + width); 449 waddch(win, winch(win) & A_CHARTEXT); 450 waddch(win, winch(win) & A_CHARTEXT); 451 } 452 wnoutrefresh(win); 453 } 454 } 455 456 /* 457 * Return the position of the first alphabetic character in a string. 458 */ 459 int first_alpha(const char *string, const char *exempt) 460 { 461 int i, in_paren = 0, c; 462 463 for (i = 0; i < strlen(string); i++) { 464 c = tolower(string[i]); 465 466 if (strchr("<[(", c)) 467 ++in_paren; 468 if (strchr(">])", c) && in_paren > 0) 469 --in_paren; 470 471 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0) 472 return i; 473 } 474 475 return 0; 476 } 477 478 /* 479 * ncurses uses ESC to detect escaped char sequences. This resutl in 480 * a small timeout before ESC is actually delivered to the application. 481 * lxdialog suggest <ESC> <ESC> which is correctly translated to two 482 * times esc. But then we need to ignore the second esc to avoid stepping 483 * out one menu too much. Filter away all escaped key sequences since 484 * keypad(FALSE) turn off ncurses support for escape sequences - and thats 485 * needed to make notimeout() do as expected. 486 */ 487 int on_key_esc(WINDOW *win) 488 { 489 int key; 490 int key2; 491 int key3; 492 493 nodelay(win, TRUE); 494 keypad(win, FALSE); 495 key = wgetch(win); 496 key2 = wgetch(win); 497 do { 498 key3 = wgetch(win); 499 } while (key3 != ERR); 500 nodelay(win, FALSE); 501 keypad(win, TRUE); 502 if (key == KEY_ESC && key2 == ERR) 503 return KEY_ESC; 504 else if (key != ERR && key != KEY_ESC && key2 == ERR) 505 ungetch(key); 506 507 return -1; 508 } 509 510 /* redraw screen in new size */ 511 int on_key_resize(void) 512 { 513 dialog_clear(); 514 return KEY_RESIZE; 515 } 516 517 struct dialog_list *item_cur; 518 struct dialog_list item_nil; 519 struct dialog_list *item_head; 520 521 void item_reset(void) 522 { 523 struct dialog_list *p, *next; 524 525 for (p = item_head; p; p = next) { 526 next = p->next; 527 free(p); 528 } 529 item_head = NULL; 530 item_cur = &item_nil; 531 } 532 533 void item_make(const char *fmt, ...) 534 { 535 va_list ap; 536 struct dialog_list *p = malloc(sizeof(*p)); 537 538 if (item_head) 539 item_cur->next = p; 540 else 541 item_head = p; 542 item_cur = p; 543 memset(p, 0, sizeof(*p)); 544 545 va_start(ap, fmt); 546 vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap); 547 va_end(ap); 548 } 549 550 void item_add_str(const char *fmt, ...) 551 { 552 va_list ap; 553 size_t avail; 554 555 avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str); 556 557 va_start(ap, fmt); 558 vsnprintf(item_cur->node.str + strlen(item_cur->node.str), 559 avail, fmt, ap); 560 item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0'; 561 va_end(ap); 562 } 563 564 void item_set_tag(char tag) 565 { 566 item_cur->node.tag = tag; 567 } 568 void item_set_data(void *ptr) 569 { 570 item_cur->node.data = ptr; 571 } 572 573 void item_set_selected(int val) 574 { 575 item_cur->node.selected = val; 576 } 577 578 int item_activate_selected(void) 579 { 580 item_foreach() 581 if (item_is_selected()) 582 return 1; 583 return 0; 584 } 585 586 void *item_data(void) 587 { 588 return item_cur->node.data; 589 } 590 591 char item_tag(void) 592 { 593 return item_cur->node.tag; 594 } 595 596 int item_count(void) 597 { 598 int n = 0; 599 struct dialog_list *p; 600 601 for (p = item_head; p; p = p->next) 602 n++; 603 return n; 604 } 605 606 void item_set(int n) 607 { 608 int i = 0; 609 item_foreach() 610 if (i++ == n) 611 return; 612 } 613 614 int item_n(void) 615 { 616 int n = 0; 617 struct dialog_list *p; 618 619 for (p = item_head; p; p = p->next) { 620 if (p == item_cur) 621 return n; 622 n++; 623 } 624 return 0; 625 } 626 627 const char *item_str(void) 628 { 629 return item_cur->node.str; 630 } 631 632 int item_is_selected(void) 633 { 634 return (item_cur->node.selected != 0); 635 } 636 637 int item_is_tag(char tag) 638 { 639 return (item_cur->node.tag == tag); 640 } 641