1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com> 4 * 5 * Derived from menuconfig. 6 */ 7 #include <xalloc.h> 8 #include "nconf.h" 9 #include "lkc.h" 10 11 int attr_normal; 12 int attr_main_heading; 13 int attr_main_menu_box; 14 int attr_main_menu_fore; 15 int attr_main_menu_back; 16 int attr_main_menu_grey; 17 int attr_main_menu_heading; 18 int attr_scrollwin_text; 19 int attr_scrollwin_heading; 20 int attr_scrollwin_box; 21 int attr_dialog_text; 22 int attr_dialog_menu_fore; 23 int attr_dialog_menu_back; 24 int attr_dialog_box; 25 int attr_input_box; 26 int attr_input_heading; 27 int attr_input_text; 28 int attr_input_field; 29 int attr_function_text; 30 int attr_function_highlight; 31 32 #define COLOR_ATTR(_at, _fg, _bg, _hl) \ 33 { .attr = &(_at), .has_color = true, .color_fg = _fg, .color_bg = _bg, .highlight = _hl } 34 #define NO_COLOR_ATTR(_at, _hl) \ 35 { .attr = &(_at), .has_color = false, .highlight = _hl } 36 #define COLOR_DEFAULT -1 37 38 struct nconf_attr_param { 39 int *attr; 40 bool has_color; 41 int color_fg; 42 int color_bg; 43 int highlight; 44 }; 45 46 static const struct nconf_attr_param color_theme_params[] = { 47 COLOR_ATTR(attr_normal, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), 48 COLOR_ATTR(attr_main_heading, COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD | A_UNDERLINE), 49 COLOR_ATTR(attr_main_menu_box, COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), 50 COLOR_ATTR(attr_main_menu_fore, COLOR_DEFAULT, COLOR_DEFAULT, A_REVERSE), 51 COLOR_ATTR(attr_main_menu_back, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), 52 COLOR_ATTR(attr_main_menu_grey, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), 53 COLOR_ATTR(attr_main_menu_heading, COLOR_GREEN, COLOR_DEFAULT, A_BOLD), 54 COLOR_ATTR(attr_scrollwin_text, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), 55 COLOR_ATTR(attr_scrollwin_heading, COLOR_GREEN, COLOR_DEFAULT, A_BOLD), 56 COLOR_ATTR(attr_scrollwin_box, COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), 57 COLOR_ATTR(attr_dialog_text, COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), 58 COLOR_ATTR(attr_dialog_menu_fore, COLOR_RED, COLOR_DEFAULT, A_STANDOUT), 59 COLOR_ATTR(attr_dialog_menu_back, COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), 60 COLOR_ATTR(attr_dialog_box, COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), 61 COLOR_ATTR(attr_input_box, COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), 62 COLOR_ATTR(attr_input_heading, COLOR_GREEN, COLOR_DEFAULT, A_BOLD), 63 COLOR_ATTR(attr_input_text, COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), 64 COLOR_ATTR(attr_input_field, COLOR_DEFAULT, COLOR_DEFAULT, A_UNDERLINE), 65 COLOR_ATTR(attr_function_text, COLOR_YELLOW, COLOR_DEFAULT, A_REVERSE), 66 COLOR_ATTR(attr_function_highlight, COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), 67 { /* sentinel */ } 68 }; 69 70 static const struct nconf_attr_param no_color_theme_params[] = { 71 NO_COLOR_ATTR(attr_normal, A_NORMAL), 72 NO_COLOR_ATTR(attr_main_heading, A_BOLD | A_UNDERLINE), 73 NO_COLOR_ATTR(attr_main_menu_box, A_NORMAL), 74 NO_COLOR_ATTR(attr_main_menu_fore, A_STANDOUT), 75 NO_COLOR_ATTR(attr_main_menu_back, A_NORMAL), 76 NO_COLOR_ATTR(attr_main_menu_grey, A_NORMAL), 77 NO_COLOR_ATTR(attr_main_menu_heading, A_BOLD), 78 NO_COLOR_ATTR(attr_scrollwin_text, A_NORMAL), 79 NO_COLOR_ATTR(attr_scrollwin_heading, A_BOLD), 80 NO_COLOR_ATTR(attr_scrollwin_box, A_BOLD), 81 NO_COLOR_ATTR(attr_dialog_text, A_NORMAL), 82 NO_COLOR_ATTR(attr_dialog_menu_fore, A_STANDOUT), 83 NO_COLOR_ATTR(attr_dialog_menu_back, A_NORMAL), 84 NO_COLOR_ATTR(attr_dialog_box, A_BOLD), 85 NO_COLOR_ATTR(attr_input_box, A_BOLD), 86 NO_COLOR_ATTR(attr_input_heading, A_BOLD), 87 NO_COLOR_ATTR(attr_input_text, A_NORMAL), 88 NO_COLOR_ATTR(attr_input_field, A_UNDERLINE), 89 NO_COLOR_ATTR(attr_function_text, A_REVERSE), 90 NO_COLOR_ATTR(attr_function_highlight, A_BOLD), 91 { /* sentinel */ } 92 }; 93 94 void set_colors(void) 95 { 96 const struct nconf_attr_param *p; 97 int pair = 0; 98 99 if (has_colors()) { 100 start_color(); 101 use_default_colors(); 102 p = color_theme_params; 103 } else { 104 p = no_color_theme_params; 105 } 106 107 for (; p->attr; p++) { 108 int attr = p->highlight; 109 110 if (p->has_color) { 111 pair++; 112 init_pair(pair, p->color_fg, p->color_bg); 113 attr |= COLOR_PAIR(pair); 114 } 115 116 *p->attr = attr; 117 } 118 } 119 120 /* this changes the windows attributes !!! */ 121 void print_in_middle(WINDOW *win, int y, int width, const char *str, int attrs) 122 { 123 wattrset(win, attrs); 124 mvwprintw(win, y, (width - strlen(str)) / 2, "%s", str); 125 } 126 127 int get_line_no(const char *text) 128 { 129 int i; 130 int total = 1; 131 132 if (!text) 133 return 0; 134 135 for (i = 0; text[i] != '\0'; i++) 136 if (text[i] == '\n') 137 total++; 138 return total; 139 } 140 141 const char *get_line(const char *text, int line_no) 142 { 143 int i; 144 int lines = 0; 145 146 if (!text) 147 return NULL; 148 149 for (i = 0; text[i] != '\0' && lines < line_no; i++) 150 if (text[i] == '\n') 151 lines++; 152 return text+i; 153 } 154 155 int get_line_length(const char *line) 156 { 157 int res = 0; 158 while (*line != '\0' && *line != '\n') { 159 line++; 160 res++; 161 } 162 return res; 163 } 164 165 /* print all lines to the window. */ 166 void fill_window(WINDOW *win, const char *text) 167 { 168 int x, y; 169 int total_lines = get_line_no(text); 170 int i; 171 172 getmaxyx(win, y, x); 173 /* do not go over end of line */ 174 total_lines = min(total_lines, y); 175 for (i = 0; i < total_lines; i++) { 176 char tmp[x+10]; 177 const char *line = get_line(text, i); 178 int len = get_line_length(line); 179 strncpy(tmp, line, min(len, x)); 180 tmp[len] = '\0'; 181 mvwprintw(win, i, 0, "%s", tmp); 182 } 183 } 184 185 /* get the message, and buttons. 186 * each button must be a char* 187 * return the selected button 188 * 189 * this dialog is used for 2 different things: 190 * 1) show a text box, no buttons. 191 * 2) show a dialog, with horizontal buttons 192 */ 193 int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...) 194 { 195 va_list ap; 196 char *btn; 197 int btns_width = 0; 198 int msg_lines = 0; 199 int msg_width = 0; 200 int total_width; 201 int win_rows = 0; 202 WINDOW *win; 203 WINDOW *msg_win; 204 WINDOW *menu_win; 205 MENU *menu; 206 ITEM *btns[btn_num+1]; 207 int i, x, y; 208 int res = -1; 209 210 211 va_start(ap, btn_num); 212 for (i = 0; i < btn_num; i++) { 213 btn = va_arg(ap, char *); 214 btns[i] = new_item(btn, ""); 215 btns_width += strlen(btn)+1; 216 } 217 va_end(ap); 218 btns[btn_num] = NULL; 219 220 /* find the widest line of msg: */ 221 msg_lines = get_line_no(msg); 222 for (i = 0; i < msg_lines; i++) { 223 const char *line = get_line(msg, i); 224 int len = get_line_length(line); 225 if (msg_width < len) 226 msg_width = len; 227 } 228 229 total_width = max(msg_width, btns_width); 230 /* place dialog in middle of screen */ 231 y = (getmaxy(stdscr)-(msg_lines+4))/2; 232 x = (getmaxx(stdscr)-(total_width+4))/2; 233 234 235 /* create the windows */ 236 if (btn_num > 0) 237 win_rows = msg_lines+4; 238 else 239 win_rows = msg_lines+2; 240 241 win = newwin(win_rows, total_width+4, y, x); 242 keypad(win, TRUE); 243 menu_win = derwin(win, 1, btns_width, win_rows-2, 244 1+(total_width+2-btns_width)/2); 245 menu = new_menu(btns); 246 msg_win = derwin(win, win_rows-2, msg_width, 1, 247 1+(total_width+2-msg_width)/2); 248 249 set_menu_fore(menu, attr_dialog_menu_fore); 250 set_menu_back(menu, attr_dialog_menu_back); 251 252 wattrset(win, attr_dialog_box); 253 box(win, 0, 0); 254 255 /* print message */ 256 wattrset(msg_win, attr_dialog_text); 257 fill_window(msg_win, msg); 258 259 set_menu_win(menu, win); 260 set_menu_sub(menu, menu_win); 261 set_menu_format(menu, 1, btn_num); 262 menu_opts_off(menu, O_SHOWDESC); 263 menu_opts_off(menu, O_SHOWMATCH); 264 menu_opts_on(menu, O_ONEVALUE); 265 menu_opts_on(menu, O_NONCYCLIC); 266 set_menu_mark(menu, ""); 267 post_menu(menu); 268 269 270 touchwin(win); 271 refresh_all_windows(main_window); 272 while ((res = wgetch(win))) { 273 switch (res) { 274 case KEY_LEFT: 275 menu_driver(menu, REQ_LEFT_ITEM); 276 break; 277 case KEY_RIGHT: 278 menu_driver(menu, REQ_RIGHT_ITEM); 279 break; 280 case 10: /* ENTER */ 281 case 27: /* ESCAPE */ 282 case ' ': 283 case KEY_F(F_BACK): 284 case KEY_F(F_EXIT): 285 break; 286 } 287 touchwin(win); 288 refresh_all_windows(main_window); 289 290 if (res == 10 || res == ' ') { 291 res = item_index(current_item(menu)); 292 break; 293 } else if (res == 27 || res == KEY_F(F_BACK) || 294 res == KEY_F(F_EXIT)) { 295 res = KEY_EXIT; 296 break; 297 } 298 } 299 300 unpost_menu(menu); 301 free_menu(menu); 302 for (i = 0; i < btn_num; i++) 303 free_item(btns[i]); 304 305 delwin(win); 306 return res; 307 } 308 309 int dialog_inputbox(WINDOW *main_window, 310 const char *title, const char *prompt, 311 const char *init, char **resultp, int *result_len) 312 { 313 int prompt_lines = 0; 314 int prompt_width = 0; 315 WINDOW *win; 316 WINDOW *prompt_win; 317 WINDOW *form_win; 318 PANEL *panel; 319 int i, x, y, lines, columns, win_lines, win_cols; 320 int res = -1; 321 int cursor_position = strlen(init); 322 int cursor_form_win; 323 char *result = *resultp; 324 325 getmaxyx(stdscr, lines, columns); 326 327 if (strlen(init)+1 > *result_len) { 328 *result_len = strlen(init)+1; 329 *resultp = result = xrealloc(result, *result_len); 330 } 331 332 /* find the widest line of msg: */ 333 prompt_lines = get_line_no(prompt); 334 for (i = 0; i < prompt_lines; i++) { 335 const char *line = get_line(prompt, i); 336 int len = get_line_length(line); 337 prompt_width = max(prompt_width, len); 338 } 339 340 if (title) 341 prompt_width = max(prompt_width, strlen(title)); 342 343 win_lines = min(prompt_lines+6, lines-2); 344 win_cols = min(prompt_width+7, columns-2); 345 prompt_lines = max(win_lines-6, 0); 346 prompt_width = max(win_cols-7, 0); 347 348 /* place dialog in middle of screen */ 349 y = (lines-win_lines)/2; 350 x = (columns-win_cols)/2; 351 352 strncpy(result, init, *result_len); 353 354 /* create the windows */ 355 win = newwin(win_lines, win_cols, y, x); 356 prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2); 357 form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2); 358 keypad(form_win, TRUE); 359 360 wattrset(form_win, attr_input_field); 361 362 wattrset(win, attr_input_box); 363 box(win, 0, 0); 364 wattrset(win, attr_input_heading); 365 if (title) 366 mvwprintw(win, 0, 3, "%s", title); 367 368 /* print message */ 369 wattrset(prompt_win, attr_input_text); 370 fill_window(prompt_win, prompt); 371 372 mvwprintw(form_win, 0, 0, "%*s", prompt_width, " "); 373 cursor_form_win = min(cursor_position, prompt_width-1); 374 mvwprintw(form_win, 0, 0, "%s", 375 result + cursor_position-cursor_form_win); 376 377 /* create panels */ 378 panel = new_panel(win); 379 380 /* show the cursor */ 381 curs_set(1); 382 383 touchwin(win); 384 refresh_all_windows(main_window); 385 while ((res = wgetch(form_win))) { 386 int len = strlen(result); 387 switch (res) { 388 case 10: /* ENTER */ 389 case 27: /* ESCAPE */ 390 case KEY_F(F_HELP): 391 case KEY_F(F_EXIT): 392 case KEY_F(F_BACK): 393 break; 394 case 8: /* ^H */ 395 case 127: /* ^? */ 396 case KEY_BACKSPACE: 397 if (cursor_position > 0) { 398 memmove(&result[cursor_position-1], 399 &result[cursor_position], 400 len-cursor_position+1); 401 cursor_position--; 402 cursor_form_win--; 403 len--; 404 } 405 break; 406 case KEY_DC: 407 if (cursor_position >= 0 && cursor_position < len) { 408 memmove(&result[cursor_position], 409 &result[cursor_position+1], 410 len-cursor_position+1); 411 len--; 412 } 413 break; 414 case KEY_UP: 415 case KEY_RIGHT: 416 if (cursor_position < len) { 417 cursor_position++; 418 cursor_form_win++; 419 } 420 break; 421 case KEY_DOWN: 422 case KEY_LEFT: 423 if (cursor_position > 0) { 424 cursor_position--; 425 cursor_form_win--; 426 } 427 break; 428 case KEY_HOME: 429 cursor_position = 0; 430 cursor_form_win = 0; 431 break; 432 case KEY_END: 433 cursor_position = len; 434 cursor_form_win = min(cursor_position, prompt_width-1); 435 break; 436 default: 437 if ((isgraph(res) || isspace(res))) { 438 /* one for new char, one for '\0' */ 439 if (len+2 > *result_len) { 440 *result_len = len+2; 441 *resultp = result = realloc(result, 442 *result_len); 443 } 444 /* insert the char at the proper position */ 445 memmove(&result[cursor_position+1], 446 &result[cursor_position], 447 len-cursor_position+1); 448 result[cursor_position] = res; 449 cursor_position++; 450 cursor_form_win++; 451 len++; 452 } else { 453 mvprintw(0, 0, "unknown key: %d\n", res); 454 } 455 break; 456 } 457 if (cursor_form_win < 0) 458 cursor_form_win = 0; 459 else if (cursor_form_win > prompt_width-1) 460 cursor_form_win = prompt_width-1; 461 462 wmove(form_win, 0, 0); 463 wclrtoeol(form_win); 464 mvwprintw(form_win, 0, 0, "%*s", prompt_width, " "); 465 mvwprintw(form_win, 0, 0, "%s", 466 result + cursor_position-cursor_form_win); 467 wmove(form_win, 0, cursor_form_win); 468 touchwin(win); 469 refresh_all_windows(main_window); 470 471 if (res == 10) { 472 res = 0; 473 break; 474 } else if (res == 27 || res == KEY_F(F_BACK) || 475 res == KEY_F(F_EXIT)) { 476 res = KEY_EXIT; 477 break; 478 } else if (res == KEY_F(F_HELP)) { 479 res = 1; 480 break; 481 } 482 } 483 484 /* hide the cursor */ 485 curs_set(0); 486 del_panel(panel); 487 delwin(prompt_win); 488 delwin(form_win); 489 delwin(win); 490 return res; 491 } 492 493 /* refresh all windows in the correct order */ 494 void refresh_all_windows(WINDOW *main_window) 495 { 496 update_panels(); 497 touchwin(main_window); 498 refresh(); 499 } 500 501 void show_scroll_win(WINDOW *main_window, 502 const char *title, 503 const char *text) 504 { 505 (void)show_scroll_win_ext(main_window, title, (char *)text, NULL, NULL, NULL, NULL); 506 } 507 508 /* layman's scrollable window... */ 509 int show_scroll_win_ext(WINDOW *main_window, const char *title, char *text, 510 int *vscroll, int *hscroll, 511 extra_key_cb_fn extra_key_cb, void *data) 512 { 513 int res; 514 int total_lines = get_line_no(text); 515 int x, y, lines, columns; 516 int start_x = 0, start_y = 0; 517 int text_lines = 0, text_cols = 0; 518 int total_cols = 0; 519 int win_cols = 0; 520 int win_lines = 0; 521 int i = 0; 522 WINDOW *win; 523 WINDOW *pad; 524 PANEL *panel; 525 bool done = false; 526 527 if (hscroll) 528 start_x = *hscroll; 529 if (vscroll) 530 start_y = *vscroll; 531 532 getmaxyx(stdscr, lines, columns); 533 534 /* find the widest line of msg: */ 535 total_lines = get_line_no(text); 536 for (i = 0; i < total_lines; i++) { 537 const char *line = get_line(text, i); 538 int len = get_line_length(line); 539 total_cols = max(total_cols, len+2); 540 } 541 542 /* create the pad */ 543 pad = newpad(total_lines+10, total_cols+10); 544 wattrset(pad, attr_scrollwin_text); 545 fill_window(pad, text); 546 547 win_lines = min(total_lines+4, lines-2); 548 win_cols = min(total_cols+2, columns-2); 549 text_lines = max(win_lines-4, 0); 550 text_cols = max(win_cols-2, 0); 551 552 /* place window in middle of screen */ 553 y = (lines-win_lines)/2; 554 x = (columns-win_cols)/2; 555 556 win = newwin(win_lines, win_cols, y, x); 557 keypad(win, TRUE); 558 /* show the help in the help window, and show the help panel */ 559 wattrset(win, attr_scrollwin_box); 560 box(win, 0, 0); 561 wattrset(win, attr_scrollwin_heading); 562 mvwprintw(win, 0, 3, " %s ", title); 563 panel = new_panel(win); 564 565 /* handle scrolling */ 566 while (!done) { 567 copywin(pad, win, start_y, start_x, 2, 2, text_lines, 568 text_cols, 0); 569 print_in_middle(win, 570 text_lines+2, 571 text_cols, 572 "<OK>", 573 attr_dialog_menu_fore); 574 wrefresh(win); 575 576 res = wgetch(win); 577 switch (res) { 578 case KEY_NPAGE: 579 case ' ': 580 case 'd': 581 start_y += text_lines-2; 582 break; 583 case KEY_PPAGE: 584 case 'u': 585 start_y -= text_lines+2; 586 break; 587 case KEY_HOME: 588 start_y = 0; 589 break; 590 case KEY_END: 591 start_y = total_lines-text_lines; 592 break; 593 case KEY_DOWN: 594 case 'j': 595 start_y++; 596 break; 597 case KEY_UP: 598 case 'k': 599 start_y--; 600 break; 601 case KEY_LEFT: 602 case 'h': 603 start_x--; 604 break; 605 case KEY_RIGHT: 606 case 'l': 607 start_x++; 608 break; 609 default: 610 if (extra_key_cb) { 611 size_t start = (get_line(text, start_y) - text); 612 size_t end = (get_line(text, start_y + text_lines) - text); 613 614 if (extra_key_cb(res, start, end, data)) { 615 done = true; 616 break; 617 } 618 } 619 } 620 if (res == 0 || res == 10 || res == 27 || res == 'q' || 621 res == KEY_F(F_HELP) || res == KEY_F(F_BACK) || 622 res == KEY_F(F_EXIT)) 623 break; 624 if (start_y < 0) 625 start_y = 0; 626 if (start_y >= total_lines-text_lines) 627 start_y = total_lines-text_lines; 628 if (start_x < 0) 629 start_x = 0; 630 if (start_x >= total_cols-text_cols) 631 start_x = total_cols-text_cols; 632 } 633 634 if (hscroll) 635 *hscroll = start_x; 636 if (vscroll) 637 *vscroll = start_y; 638 del_panel(panel); 639 delwin(win); 640 refresh_all_windows(main_window); 641 return res; 642 } 643