1 /* 2 * util.c 3 * 4 * ORIGINAL AUTHOR: Savio Lam (lam836 (at) cs.cuhk.hk) 5 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap (at) 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 if (set_theme(theme)) { 225 if (has_colors()) { /* Terminal supports color? */ 226 start_color(); 227 init_dialog_colors(); 228 } 229 } 230 else 231 { 232 set_mono_theme(); 233 } 234 } 235 236 /* 237 * Set window to attribute 'attr' 238 */ 239 void attr_clear(WINDOW * win, int height, int width, chtype attr) 240 { 241 int i, j; 242 243 wattrset(win, attr); 244 for (i = 0; i < height; i++) { 245 wmove(win, i, 0); 246 for (j = 0; j < width; j++) 247 waddch(win, ' '); 248 } 249 touchwin(win); 250 } 251 252 void dialog_clear(void) 253 { 254 attr_clear(stdscr, LINES, COLS, dlg.screen.atr); 255 /* Display background title if it exists ... - SLH */ 256 if (dlg.backtitle != NULL) { 257 int i; 258 259 wattrset(stdscr, dlg.screen.atr); 260 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle); 261 wmove(stdscr, 1, 1); 262 for (i = 1; i < COLS - 1; i++) 263 waddch(stdscr, ACS_HLINE); 264 } 265 wnoutrefresh(stdscr); 266 } 267 268 /* 269 * Do some initialization for dialog 270 */ 271 void init_dialog(const char *backtitle) 272 { 273 dlg.backtitle = backtitle; 274 color_setup(getenv("MENUCONFIG_COLOR")); 275 } 276 277 void reset_dialog(void) 278 { 279 initscr(); /* Init curses */ 280 keypad(stdscr, TRUE); 281 cbreak(); 282 noecho(); 283 dialog_clear(); 284 } 285 286 /* 287 * End using dialog functions. 288 */ 289 void end_dialog(void) 290 { 291 endwin(); 292 } 293 294 /* Print the title of the dialog. Center the title and truncate 295 * tile if wider than dialog (- 2 chars). 296 **/ 297 void print_title(WINDOW *dialog, const char *title, int width) 298 { 299 if (title) { 300 int tlen = MIN(width - 2, strlen(title)); 301 wattrset(dialog, dlg.title.atr); 302 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' '); 303 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen); 304 waddch(dialog, ' '); 305 } 306 } 307 308 /* 309 * Print a string of text in a window, automatically wrap around to the 310 * next line if the string is too long to fit on one line. Newline 311 * characters '\n' are replaced by spaces. We start on a new line 312 * if there is no room for at least 4 nonblanks following a double-space. 313 */ 314 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x) 315 { 316 int newl, cur_x, cur_y; 317 int i, prompt_len, room, wlen; 318 char tempstr[MAX_LEN + 1], *word, *sp, *sp2; 319 320 strcpy(tempstr, prompt); 321 322 prompt_len = strlen(tempstr); 323 324 /* 325 * Remove newlines 326 */ 327 for (i = 0; i < prompt_len; i++) { 328 if (tempstr[i] == '\n') 329 tempstr[i] = ' '; 330 } 331 332 if (prompt_len <= width - x * 2) { /* If prompt is short */ 333 wmove(win, y, (width - prompt_len) / 2); 334 waddstr(win, tempstr); 335 } else { 336 cur_x = x; 337 cur_y = y; 338 newl = 1; 339 word = tempstr; 340 while (word && *word) { 341 sp = index(word, ' '); 342 if (sp) 343 *sp++ = 0; 344 345 /* Wrap to next line if either the word does not fit, 346 or it is the first word of a new sentence, and it is 347 short, and the next word does not fit. */ 348 room = width - cur_x; 349 wlen = strlen(word); 350 if (wlen > room || 351 (newl && wlen < 4 && sp 352 && wlen + 1 + strlen(sp) > room 353 && (!(sp2 = index(sp, ' ')) 354 || wlen + 1 + (sp2 - sp) > room))) { 355 cur_y++; 356 cur_x = x; 357 } 358 wmove(win, cur_y, cur_x); 359 waddstr(win, word); 360 getyx(win, cur_y, cur_x); 361 cur_x++; 362 if (sp && *sp == ' ') { 363 cur_x++; /* double space */ 364 while (*++sp == ' ') ; 365 newl = 1; 366 } else 367 newl = 0; 368 word = sp; 369 } 370 } 371 } 372 373 /* 374 * Print a button 375 */ 376 void print_button(WINDOW * win, const char *label, int y, int x, int selected) 377 { 378 int i, temp; 379 380 wmove(win, y, x); 381 wattrset(win, selected ? dlg.button_active.atr 382 : dlg.button_inactive.atr); 383 waddstr(win, "<"); 384 temp = strspn(label, " "); 385 label += temp; 386 wattrset(win, selected ? dlg.button_label_active.atr 387 : dlg.button_label_inactive.atr); 388 for (i = 0; i < temp; i++) 389 waddch(win, ' '); 390 wattrset(win, selected ? dlg.button_key_active.atr 391 : dlg.button_key_inactive.atr); 392 waddch(win, label[0]); 393 wattrset(win, selected ? dlg.button_label_active.atr 394 : dlg.button_label_inactive.atr); 395 waddstr(win, (char *)label + 1); 396 wattrset(win, selected ? dlg.button_active.atr 397 : dlg.button_inactive.atr); 398 waddstr(win, ">"); 399 wmove(win, y, x + temp + 1); 400 } 401 402 /* 403 * Draw a rectangular box with line drawing characters 404 */ 405 void 406 draw_box(WINDOW * win, int y, int x, int height, int width, 407 chtype box, chtype border) 408 { 409 int i, j; 410 411 wattrset(win, 0); 412 for (i = 0; i < height; i++) { 413 wmove(win, y + i, x); 414 for (j = 0; j < width; j++) 415 if (!i && !j) 416 waddch(win, border | ACS_ULCORNER); 417 else if (i == height - 1 && !j) 418 waddch(win, border | ACS_LLCORNER); 419 else if (!i && j == width - 1) 420 waddch(win, box | ACS_URCORNER); 421 else if (i == height - 1 && j == width - 1) 422 waddch(win, box | ACS_LRCORNER); 423 else if (!i) 424 waddch(win, border | ACS_HLINE); 425 else if (i == height - 1) 426 waddch(win, box | ACS_HLINE); 427 else if (!j) 428 waddch(win, border | ACS_VLINE); 429 else if (j == width - 1) 430 waddch(win, box | ACS_VLINE); 431 else 432 waddch(win, box | ' '); 433 } 434 } 435 436 /* 437 * Draw shadows along the right and bottom edge to give a more 3D look 438 * to the boxes 439 */ 440 void draw_shadow(WINDOW * win, int y, int x, int height, int width) 441 { 442 int i; 443 444 if (has_colors()) { /* Whether terminal supports color? */ 445 wattrset(win, dlg.shadow.atr); 446 wmove(win, y + height, x + 2); 447 for (i = 0; i < width; i++) 448 waddch(win, winch(win) & A_CHARTEXT); 449 for (i = y + 1; i < y + height + 1; i++) { 450 wmove(win, i, x + width); 451 waddch(win, winch(win) & A_CHARTEXT); 452 waddch(win, winch(win) & A_CHARTEXT); 453 } 454 wnoutrefresh(win); 455 } 456 } 457 458 /* 459 * Return the position of the first alphabetic character in a string. 460 */ 461 int first_alpha(const char *string, const char *exempt) 462 { 463 int i, in_paren = 0, c; 464 465 for (i = 0; i < strlen(string); i++) { 466 c = tolower(string[i]); 467 468 if (strchr("<[(", c)) 469 ++in_paren; 470 if (strchr(">])", c) && in_paren > 0) 471 --in_paren; 472 473 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0) 474 return i; 475 } 476 477 return 0; 478 } 479 480 /* 481 * ncurses uses ESC to detect escaped char sequences. This resutl in 482 * a small timeout before ESC is actually delivered to the application. 483 * lxdialog suggest <ESC> <ESC> which is correctly translated to two 484 * times esc. But then we need to ignore the second esc to avoid stepping 485 * out one menu too much. Filter away all escaped key sequences since 486 * keypad(FALSE) turn off ncurses support for escape sequences - and thats 487 * needed to make notimeout() do as expected. 488 */ 489 int on_key_esc(WINDOW *win) 490 { 491 int key; 492 int key2; 493 int key3; 494 495 nodelay(win, TRUE); 496 keypad(win, FALSE); 497 key = wgetch(win); 498 key2 = wgetch(win); 499 do { 500 key3 = wgetch(win); 501 } while (key3 != ERR); 502 nodelay(win, FALSE); 503 keypad(win, TRUE); 504 if (key == KEY_ESC && key2 == ERR) 505 return KEY_ESC; 506 else if (key != ERR && key != KEY_ESC && key2 == ERR) 507 ungetch(key); 508 509 return -1; 510 } 511 512 /* redraw screen in new size */ 513 int on_key_resize(void) 514 { 515 dialog_clear(); 516 return KEY_RESIZE; 517 } 518 519 struct dialog_list *item_cur; 520 struct dialog_list item_nil; 521 struct dialog_list *item_head; 522 523 void item_reset(void) 524 { 525 struct dialog_list *p, *next; 526 527 for (p = item_head; p; p = next) { 528 next = p->next; 529 free(p); 530 } 531 item_head = NULL; 532 item_cur = &item_nil; 533 } 534 535 void item_make(const char *fmt, ...) 536 { 537 va_list ap; 538 struct dialog_list *p = malloc(sizeof(*p)); 539 540 if (item_head) 541 item_cur->next = p; 542 else 543 item_head = p; 544 item_cur = p; 545 memset(p, 0, sizeof(*p)); 546 547 va_start(ap, fmt); 548 vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap); 549 va_end(ap); 550 } 551 552 void item_add_str(const char *fmt, ...) 553 { 554 va_list ap; 555 size_t avail; 556 557 avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str); 558 559 va_start(ap, fmt); 560 vsnprintf(item_cur->node.str + strlen(item_cur->node.str), 561 avail, fmt, ap); 562 item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0'; 563 va_end(ap); 564 } 565 566 void item_set_tag(char tag) 567 { 568 item_cur->node.tag = tag; 569 } 570 void item_set_data(void *ptr) 571 { 572 item_cur->node.data = ptr; 573 } 574 575 void item_set_selected(int val) 576 { 577 item_cur->node.selected = val; 578 } 579 580 int item_activate_selected(void) 581 { 582 item_foreach() 583 if (item_is_selected()) 584 return 1; 585 return 0; 586 } 587 588 void *item_data(void) 589 { 590 return item_cur->node.data; 591 } 592 593 char item_tag(void) 594 { 595 return item_cur->node.tag; 596 } 597 598 int item_count(void) 599 { 600 int n = 0; 601 struct dialog_list *p; 602 603 for (p = item_head; p; p = p->next) 604 n++; 605 return n; 606 } 607 608 void item_set(int n) 609 { 610 int i = 0; 611 item_foreach() 612 if (i++ == n) 613 return; 614 } 615 616 int item_n(void) 617 { 618 int n = 0; 619 struct dialog_list *p; 620 621 for (p = item_head; p; p = p->next) { 622 if (p == item_cur) 623 return n; 624 n++; 625 } 626 return 0; 627 } 628 629 const char *item_str(void) 630 { 631 return item_cur->node.str; 632 } 633 634 int item_is_selected(void) 635 { 636 return (item_cur->node.selected != 0); 637 } 638 639 int item_is_tag(char tag) 640 { 641 return (item_cur->node.tag == tag); 642 } 643
