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 <stdarg.h> 23 24#include "dialog.h" 25 26struct dialog_info dlg; 27 28static void set_mono_theme(void) 29{ 30 dlg.screen.atr = A_NORMAL; 31 dlg.shadow.atr = A_NORMAL; 32 dlg.dialog.atr = A_NORMAL; 33 dlg.title.atr = A_BOLD; 34 dlg.border.atr = A_NORMAL; 35 dlg.button_active.atr = A_REVERSE; 36 dlg.button_inactive.atr = A_DIM; 37 dlg.button_key_active.atr = A_REVERSE; 38 dlg.button_key_inactive.atr = A_BOLD; 39 dlg.button_label_active.atr = A_REVERSE; 40 dlg.button_label_inactive.atr = A_NORMAL; 41 dlg.inputbox.atr = A_NORMAL; 42 dlg.inputbox_border.atr = A_NORMAL; 43 dlg.searchbox.atr = A_NORMAL; 44 dlg.searchbox_title.atr = A_BOLD; 45 dlg.searchbox_border.atr = A_NORMAL; 46 dlg.position_indicator.atr = A_BOLD; 47 dlg.menubox.atr = A_NORMAL; 48 dlg.menubox_border.atr = A_NORMAL; 49 dlg.item.atr = A_NORMAL; 50 dlg.item_selected.atr = A_REVERSE; 51 dlg.tag.atr = A_BOLD; 52 dlg.tag_selected.atr = A_REVERSE; 53 dlg.tag_key.atr = A_BOLD; 54 dlg.tag_key_selected.atr = A_REVERSE; 55 dlg.check.atr = A_BOLD; 56 dlg.check_selected.atr = A_REVERSE; 57 dlg.uarrow.atr = A_BOLD; 58 dlg.darrow.atr = A_BOLD; 59} 60 61#define DLG_COLOR(dialog, f, b, h) \ 62do { \ 63 dlg.dialog.fg = (f); \ 64 dlg.dialog.bg = (b); \ 65 dlg.dialog.hl = (h); \ 66} while (0) 67 68static void set_classic_theme(void) 69{ 70 DLG_COLOR(screen, COLOR_CYAN, COLOR_BLUE, true); 71 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, true); 72 DLG_COLOR(dialog, COLOR_BLACK, COLOR_WHITE, false); 73 DLG_COLOR(title, COLOR_YELLOW, COLOR_WHITE, true); 74 DLG_COLOR(border, COLOR_WHITE, COLOR_WHITE, true); 75 DLG_COLOR(button_active, COLOR_WHITE, COLOR_BLUE, true); 76 DLG_COLOR(button_inactive, COLOR_BLACK, COLOR_WHITE, false); 77 DLG_COLOR(button_key_active, COLOR_WHITE, COLOR_BLUE, true); 78 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_WHITE, false); 79 DLG_COLOR(button_label_active, COLOR_YELLOW, COLOR_BLUE, true); 80 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_WHITE, true); 81 DLG_COLOR(inputbox, COLOR_BLACK, COLOR_WHITE, false); 82 DLG_COLOR(inputbox_border, COLOR_BLACK, COLOR_WHITE, false); 83 DLG_COLOR(searchbox, COLOR_BLACK, COLOR_WHITE, false); 84 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_WHITE, true); 85 DLG_COLOR(searchbox_border, COLOR_WHITE, COLOR_WHITE, true); 86 DLG_COLOR(position_indicator, COLOR_YELLOW, COLOR_WHITE, true); 87 DLG_COLOR(menubox, COLOR_BLACK, COLOR_WHITE, false); 88 DLG_COLOR(menubox_border, COLOR_WHITE, COLOR_WHITE, true); 89 DLG_COLOR(item, COLOR_BLACK, COLOR_WHITE, false); 90 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_BLUE, true); 91 DLG_COLOR(tag, COLOR_YELLOW, COLOR_WHITE, true); 92 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_BLUE, true); 93 DLG_COLOR(tag_key, COLOR_YELLOW, COLOR_WHITE, true); 94 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_BLUE, true); 95 DLG_COLOR(check, COLOR_BLACK, COLOR_WHITE, false); 96 DLG_COLOR(check_selected, COLOR_WHITE, COLOR_BLUE, true); 97 DLG_COLOR(uarrow, COLOR_GREEN, COLOR_WHITE, true); 98 DLG_COLOR(darrow, COLOR_GREEN, COLOR_WHITE, true); 99} 100 101static void set_blackbg_theme(void) 102{ 103 DLG_COLOR(screen, COLOR_RED, COLOR_BLACK, true); 104 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false); 105 DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false); 106 DLG_COLOR(title, COLOR_RED, COLOR_BLACK, false); 107 DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true); 108 109 DLG_COLOR(button_active, COLOR_YELLOW, COLOR_RED, false); 110 DLG_COLOR(button_inactive, COLOR_YELLOW, COLOR_BLACK, false); 111 DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_RED, true); 112 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_BLACK, false); 113 DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_RED, false); 114 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_BLACK, true); 115 116 DLG_COLOR(inputbox, COLOR_YELLOW, COLOR_BLACK, false); 117 DLG_COLOR(inputbox_border, COLOR_YELLOW, COLOR_BLACK, false); 118 119 DLG_COLOR(searchbox, COLOR_YELLOW, COLOR_BLACK, false); 120 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_BLACK, true); 121 DLG_COLOR(searchbox_border, COLOR_BLACK, COLOR_BLACK, true); 122 123 DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK, false); 124 125 DLG_COLOR(menubox, COLOR_YELLOW, COLOR_BLACK, false); 126 DLG_COLOR(menubox_border, COLOR_BLACK, COLOR_BLACK, true); 127 128 DLG_COLOR(item, COLOR_WHITE, COLOR_BLACK, false); 129 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_RED, false); 130 131 DLG_COLOR(tag, COLOR_RED, COLOR_BLACK, false); 132 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_RED, true); 133 DLG_COLOR(tag_key, COLOR_RED, COLOR_BLACK, false); 134 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED, true); 135 136 DLG_COLOR(check, COLOR_YELLOW, COLOR_BLACK, false); 137 DLG_COLOR(check_selected, COLOR_YELLOW, COLOR_RED, true); 138 139 DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false); 140 DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false); 141} 142 143static void set_bluetitle_theme(void) 144{ 145 set_classic_theme(); 146 DLG_COLOR(title, COLOR_BLUE, COLOR_WHITE, true); 147 DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_BLUE, true); 148 DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_BLUE, true); 149 DLG_COLOR(searchbox_title, COLOR_BLUE, COLOR_WHITE, true); 150 DLG_COLOR(position_indicator, COLOR_BLUE, COLOR_WHITE, true); 151 DLG_COLOR(tag, COLOR_BLUE, COLOR_WHITE, true); 152 DLG_COLOR(tag_key, COLOR_BLUE, COLOR_WHITE, true); 153 154} 155 156/* 157 * Select color theme 158 */ 159static int set_theme(const char *theme) 160{ 161 int use_color = 1; 162 if (!theme) 163 set_bluetitle_theme(); 164 else if (strcmp(theme, "classic") == 0) 165 set_classic_theme(); 166 else if (strcmp(theme, "bluetitle") == 0) 167 set_bluetitle_theme(); 168 else if (strcmp(theme, "blackbg") == 0) 169 set_blackbg_theme(); 170 else if (strcmp(theme, "mono") == 0) 171 use_color = 0; 172 173 return use_color; 174} 175 176static void init_one_color(struct dialog_color *color) 177{ 178 static int pair = 0; 179 180 pair++; 181 init_pair(pair, color->fg, color->bg); 182 if (color->hl) 183 color->atr = A_BOLD | COLOR_PAIR(pair); 184 else 185 color->atr = COLOR_PAIR(pair); 186} 187 188static void init_dialog_colors(void) 189{ 190 init_one_color(&dlg.screen); 191 init_one_color(&dlg.shadow); 192 init_one_color(&dlg.dialog); 193 init_one_color(&dlg.title); 194 init_one_color(&dlg.border); 195 init_one_color(&dlg.button_active); 196 init_one_color(&dlg.button_inactive); 197 init_one_color(&dlg.button_key_active); 198 init_one_color(&dlg.button_key_inactive); 199 init_one_color(&dlg.button_label_active); 200 init_one_color(&dlg.button_label_inactive); 201 init_one_color(&dlg.inputbox); 202 init_one_color(&dlg.inputbox_border); 203 init_one_color(&dlg.searchbox); 204 init_one_color(&dlg.searchbox_title); 205 init_one_color(&dlg.searchbox_border); 206 init_one_color(&dlg.position_indicator); 207 init_one_color(&dlg.menubox); 208 init_one_color(&dlg.menubox_border); 209 init_one_color(&dlg.item); 210 init_one_color(&dlg.item_selected); 211 init_one_color(&dlg.tag); 212 init_one_color(&dlg.tag_selected); 213 init_one_color(&dlg.tag_key); 214 init_one_color(&dlg.tag_key_selected); 215 init_one_color(&dlg.check); 216 init_one_color(&dlg.check_selected); 217 init_one_color(&dlg.uarrow); 218 init_one_color(&dlg.darrow); 219} 220 221/* 222 * Setup for color display 223 */ 224static void color_setup(const char *theme) 225{ 226 int use_color; 227 228 use_color = set_theme(theme); 229 if (use_color && has_colors()) { 230 start_color(); 231 init_dialog_colors(); 232 } else 233 set_mono_theme(); 234} 235 236/* 237 * Set window to attribute 'attr' 238 */ 239void 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 252void 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 */ 271int init_dialog(const char *backtitle) 272{ 273 int height, width; 274 275 initscr(); /* Init curses */ 276 getmaxyx(stdscr, height, width); 277 if (height < 19 || width < 80) { 278 endwin(); 279 return -ERRDISPLAYTOOSMALL; 280 } 281 282 dlg.backtitle = backtitle; 283 color_setup(getenv("MENUCONFIG_COLOR")); 284 285 keypad(stdscr, TRUE); 286 cbreak(); 287 noecho(); 288 dialog_clear(); 289 290 return 0; 291} 292 293void set_dialog_backtitle(const char *backtitle) 294{ 295 dlg.backtitle = backtitle; 296} 297 298/* 299 * End using dialog functions. 300 */ 301void end_dialog(int x, int y) 302{ 303 /* move cursor back to original position */ 304 move(y, x); 305 refresh(); 306 endwin(); 307} 308 309/* Print the title of the dialog. Center the title and truncate 310 * tile if wider than dialog (- 2 chars). 311 **/ 312void print_title(WINDOW *dialog, const char *title, int width) 313{ 314 if (title) { 315 int tlen = MIN(width - 2, strlen(title)); 316 wattrset(dialog, dlg.title.atr); 317 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' '); 318 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen); 319 waddch(dialog, ' '); 320 } 321} 322 323/* 324 * Print a string of text in a window, automatically wrap around to the 325 * next line if the string is too long to fit on one line. Newline 326 * characters '\n' are replaced by spaces. We start on a new line 327 * if there is no room for at least 4 nonblanks following a double-space. 328 */ 329void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x) 330{ 331 int newl, cur_x, cur_y; 332 int i, prompt_len, room, wlen; 333 char tempstr[MAX_LEN + 1], *word, *sp, *sp2; 334 335 strcpy(tempstr, prompt); 336 337 prompt_len = strlen(tempstr); 338 339 /* 340 * Remove newlines 341 */ 342 for (i = 0; i < prompt_len; i++) { 343 if (tempstr[i] == '\n') 344 tempstr[i] = ' '; 345 } 346 347 if (prompt_len <= width - x * 2) { /* If prompt is short */ 348 wmove(win, y, (width - prompt_len) / 2); 349 waddstr(win, tempstr); 350 } else { 351 cur_x = x; 352 cur_y = y; 353 newl = 1; 354 word = tempstr; 355 while (word && *word) { 356 sp = strchr(word, ' '); 357 if (sp) 358 *sp++ = 0; 359 360 /* Wrap to next line if either the word does not fit, 361 or it is the first word of a new sentence, and it is 362 short, and the next word does not fit. */ 363 room = width - cur_x; 364 wlen = strlen(word); 365 if (wlen > room || 366 (newl && wlen < 4 && sp 367 && wlen + 1 + strlen(sp) > room 368 && (!(sp2 = strchr(sp, ' ')) 369 || wlen + 1 + (sp2 - sp) > room))) { 370 cur_y++; 371 cur_x = x; 372 } 373 wmove(win, cur_y, cur_x); 374 waddstr(win, word); 375 getyx(win, cur_y, cur_x); 376 cur_x++; 377 if (sp && *sp == ' ') { 378 cur_x++; /* double space */ 379 while (*++sp == ' ') ; 380 newl = 1; 381 } else 382 newl = 0; 383 word = sp; 384 } 385 } 386} 387 388/* 389 * Print a button 390 */ 391void print_button(WINDOW * win, const char *label, int y, int x, int selected) 392{ 393 int i, temp; 394 395 wmove(win, y, x); 396 wattrset(win, selected ? dlg.button_active.atr 397 : dlg.button_inactive.atr); 398 waddstr(win, "<"); 399 temp = strspn(label, " "); 400 label += temp; 401 wattrset(win, selected ? dlg.button_label_active.atr 402 : dlg.button_label_inactive.atr); 403 for (i = 0; i < temp; i++) 404 waddch(win, ' '); 405 wattrset(win, selected ? dlg.button_key_active.atr 406 : dlg.button_key_inactive.atr); 407 waddch(win, label[0]); 408 wattrset(win, selected ? dlg.button_label_active.atr 409 : dlg.button_label_inactive.atr); 410 waddstr(win, (char *)label + 1); 411 wattrset(win, selected ? dlg.button_active.atr 412 : dlg.button_inactive.atr); 413 waddstr(win, ">"); 414 wmove(win, y, x + temp + 1); 415} 416 417/* 418 * Draw a rectangular box with line drawing characters 419 */ 420void 421draw_box(WINDOW * win, int y, int x, int height, int width, 422 chtype box, chtype border) 423{ 424 int i, j; 425 426 wattrset(win, 0); 427 for (i = 0; i < height; i++) { 428 wmove(win, y + i, x); 429 for (j = 0; j < width; j++) 430 if (!i && !j) 431 waddch(win, border | ACS_ULCORNER); 432 else if (i == height - 1 && !j) 433 waddch(win, border | ACS_LLCORNER); 434 else if (!i && j == width - 1) 435 waddch(win, box | ACS_URCORNER); 436 else if (i == height - 1 && j == width - 1) 437 waddch(win, box | ACS_LRCORNER); 438 else if (!i) 439 waddch(win, border | ACS_HLINE); 440 else if (i == height - 1) 441 waddch(win, box | ACS_HLINE); 442 else if (!j) 443 waddch(win, border | ACS_VLINE); 444 else if (j == width - 1) 445 waddch(win, box | ACS_VLINE); 446 else 447 waddch(win, box | ' '); 448 } 449} 450 451/* 452 * Draw shadows along the right and bottom edge to give a more 3D look 453 * to the boxes 454 */ 455void draw_shadow(WINDOW * win, int y, int x, int height, int width) 456{ 457 int i; 458 459 if (has_colors()) { /* Whether terminal supports color? */ 460 wattrset(win, dlg.shadow.atr); 461 wmove(win, y + height, x + 2); 462 for (i = 0; i < width; i++) 463 waddch(win, winch(win) & A_CHARTEXT); 464 for (i = y + 1; i < y + height + 1; i++) { 465 wmove(win, i, x + width); 466 waddch(win, winch(win) & A_CHARTEXT); 467 waddch(win, winch(win) & A_CHARTEXT); 468 } 469 wnoutrefresh(win); 470 } 471} 472 473/* 474 * Return the position of the first alphabetic character in a string. 475 */ 476int first_alpha(const char *string, const char *exempt) 477{ 478 int i, in_paren = 0, c; 479 480 for (i = 0; i < strlen(string); i++) { 481 c = tolower(string[i]); 482 483 if (strchr("<[(", c)) 484 ++in_paren; 485 if (strchr(">])", c) && in_paren > 0) 486 --in_paren; 487 488 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0) 489 return i; 490 } 491 492 return 0; 493} 494 495/* 496 * ncurses uses ESC to detect escaped char sequences. This resutl in 497 * a small timeout before ESC is actually delivered to the application. 498 * lxdialog suggest <ESC> <ESC> which is correctly translated to two 499 * times esc. But then we need to ignore the second esc to avoid stepping 500 * out one menu too much. Filter away all escaped key sequences since 501 * keypad(FALSE) turn off ncurses support for escape sequences - and thats 502 * needed to make notimeout() do as expected. 503 */ 504int on_key_esc(WINDOW *win) 505{ 506 int key; 507 int key2; 508 int key3; 509 510 nodelay(win, TRUE); 511 keypad(win, FALSE); 512 key = wgetch(win); 513 key2 = wgetch(win); 514 do { 515 key3 = wgetch(win); 516 } while (key3 != ERR); 517 nodelay(win, FALSE); 518 keypad(win, TRUE); 519 if (key == KEY_ESC && key2 == ERR) 520 return KEY_ESC; 521 else if (key != ERR && key != KEY_ESC && key2 == ERR) 522 ungetch(key); 523 524 return -1; 525} 526 527/* redraw screen in new size */ 528int on_key_resize(void) 529{ 530 dialog_clear(); 531 return KEY_RESIZE; 532} 533 534struct dialog_list *item_cur; 535struct dialog_list item_nil; 536struct dialog_list *item_head; 537 538void item_reset(void) 539{ 540 struct dialog_list *p, *next; 541 542 for (p = item_head; p; p = next) { 543 next = p->next; 544 free(p); 545 } 546 item_head = NULL; 547 item_cur = &item_nil; 548} 549 550void item_make(const char *fmt, ...) 551{ 552 va_list ap; 553 struct dialog_list *p = malloc(sizeof(*p)); 554 555 if (item_head) 556 item_cur->next = p; 557 else 558 item_head = p; 559 item_cur = p; 560 memset(p, 0, sizeof(*p)); 561 562 va_start(ap, fmt); 563 vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap); 564 va_end(ap); 565} 566 567void item_add_str(const char *fmt, ...) 568{ 569 va_list ap; 570 size_t avail; 571 572 avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str); 573 574 va_start(ap, fmt); 575 vsnprintf(item_cur->node.str + strlen(item_cur->node.str), 576 avail, fmt, ap); 577 item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0'; 578 va_end(ap); 579} 580 581void item_set_tag(char tag) 582{ 583 item_cur->node.tag = tag; 584} 585void item_set_data(void *ptr) 586{ 587 item_cur->node.data = ptr; 588} 589 590void item_set_selected(int val) 591{ 592 item_cur->node.selected = val; 593} 594 595int item_activate_selected(void) 596{ 597 item_foreach() 598 if (item_is_selected()) 599 return 1; 600 return 0; 601} 602 603void *item_data(void) 604{ 605 return item_cur->node.data; 606} 607 608char item_tag(void) 609{ 610 return item_cur->node.tag; 611} 612 613int item_count(void) 614{ 615 int n = 0; 616 struct dialog_list *p; 617 618 for (p = item_head; p; p = p->next) 619 n++; 620 return n; 621} 622 623void item_set(int n) 624{ 625 int i = 0; 626 item_foreach() 627 if (i++ == n) 628 return; 629} 630 631int item_n(void) 632{ 633 int n = 0; 634 struct dialog_list *p; 635 636 for (p = item_head; p; p = p->next) { 637 if (p == item_cur) 638 return n; 639 n++; 640 } 641 return 0; 642} 643 644const char *item_str(void) 645{ 646 return item_cur->node.str; 647} 648 649int item_is_selected(void) 650{ 651 return (item_cur->node.selected != 0); 652} 653 654int item_is_tag(char tag) 655{ 656 return (item_cur->node.tag == tag); 657} 658