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 9: /* TAB */ 281 if (btn_num > 1) { 282 /* cycle through buttons */ 283 if (item_index(current_item(menu)) == btn_num - 1) 284 menu_driver(menu, REQ_FIRST_ITEM); 285 else 286 menu_driver(menu, REQ_NEXT_ITEM); 287 } 288 break; 289 case 10: /* ENTER */ 290 case 27: /* ESCAPE */ 291 case ' ': 292 case KEY_F(F_BACK): 293 case KEY_F(F_EXIT): 294 break; 295 } 296 touchwin(win); 297 refresh_all_windows(main_window); 298 299 if (res == 10 || res == ' ') { 300 res = item_index(current_item(menu)); 301 break; 302 } else if (res == 27 || res == KEY_F(F_BACK) || 303 res == KEY_F(F_EXIT)) { 304 res = KEY_EXIT; 305 break; 306 } 307 } 308 309 unpost_menu(menu); 310 free_menu(menu); 311 for (i = 0; i < btn_num; i++) 312 free_item(btns[i]); 313 314 delwin(win); 315 return res; 316 } 317 318 int dialog_inputbox(WINDOW *main_window, 319 const char *title, const char *prompt, 320 const char *init, char **resultp, int *result_len) 321 { 322 int prompt_lines = 0; 323 int prompt_width = 0; 324 WINDOW *win; 325 WINDOW *prompt_win; 326 WINDOW *form_win; 327 PANEL *panel; 328 int i, x, y, lines, columns, win_lines, win_cols; 329 int res = -1; 330 int cursor_position = strlen(init); 331 int cursor_form_win; 332 char *result = *resultp; 333 334 getmaxyx(stdscr, lines, columns); 335 336 if (strlen(init)+1 > *result_len) { 337 *result_len = strlen(init)+1; 338 *resultp = result = xrealloc(result, *result_len); 339 } 340 341 /* find the widest line of msg: */ 342 prompt_lines = get_line_no(prompt); 343 for (i = 0; i < prompt_lines; i++) { 344 const char *line = get_line(prompt, i); 345 int len = get_line_length(line); 346 prompt_width = max(prompt_width, len); 347 } 348 349 if (title) 350 prompt_width = max(prompt_width, strlen(title)); 351 352 win_lines = min(prompt_lines+6, lines-2); 353 win_cols = min(prompt_width+7, columns-2); 354 prompt_lines = max(win_lines-6, 0); 355 prompt_width = max(win_cols-7, 0); 356 357 /* place dialog in middle of screen */ 358 y = (lines-win_lines)/2; 359 x = (columns-win_cols)/2; 360 361 strncpy(result, init, *result_len); 362 363 /* create the windows */ 364 win = newwin(win_lines, win_cols, y, x); 365 prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2); 366 form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2); 367 keypad(form_win, TRUE); 368 369 wattrset(form_win, attr_input_field); 370 371 wattrset(win, attr_input_box); 372 box(win, 0, 0); 373 wattrset(win, attr_input_heading); 374 if (title) 375 mvwprintw(win, 0, 3, "%s", title); 376 377 /* print message */ 378 wattrset(prompt_win, attr_input_text); 379 fill_window(prompt_win, prompt); 380 381 mvwprintw(form_win, 0, 0, "%*s", prompt_width, " "); 382 cursor_form_win = min(cursor_position, prompt_width-1); 383 mvwprintw(form_win, 0, 0, "%s", 384 result + cursor_position-cursor_form_win); 385 386 /* create panels */ 387 panel = new_panel(win); 388 389 /* show the cursor */ 390 curs_set(1); 391 392 touchwin(win); 393 refresh_all_windows(main_window); 394 while ((res = wgetch(form_win))) { 395 int len = strlen(result); 396 switch (res) { 397 case 10: /* ENTER */ 398 case 27: /* ESCAPE */ 399 case KEY_F(F_HELP): 400 case KEY_F(F_EXIT): 401 case KEY_F(F_BACK): 402 break; 403 case 8: /* ^H */ 404 case 127: /* ^? */ 405 case KEY_BACKSPACE: 406 if (cursor_position > 0) { 407 memmove(&result[cursor_position-1], 408 &result[cursor_position], 409 len-cursor_position+1); 410 cursor_position--; 411 cursor_form_win--; 412 len--; 413 } 414 break; 415 case KEY_DC: 416 if (cursor_position >= 0 && cursor_position < len) { 417 memmove(&result[cursor_position], 418 &result[cursor_position+1], 419 len-cursor_position+1); 420 len--; 421 } 422 break; 423 case KEY_UP: 424 case KEY_RIGHT: 425 if (cursor_position < len) { 426 cursor_position++; 427 cursor_form_win++; 428 } 429 break; 430 case KEY_DOWN: 431 case KEY_LEFT: 432 if (cursor_position > 0) { 433 cursor_position--; 434 cursor_form_win--; 435 } 436 break; 437 case KEY_HOME: 438 cursor_position = 0; 439 cursor_form_win = 0; 440 break; 441 case KEY_END: 442 cursor_position = len; 443 cursor_form_win = min(cursor_position, prompt_width-1); 444 break; 445 default: 446 if ((isgraph(res) || isspace(res))) { 447 /* one for new char, one for '\0' */ 448 if (len+2 > *result_len) { 449 *result_len = len+2; 450 *resultp = result = realloc(result, 451 *result_len); 452 } 453 /* insert the char at the proper position */ 454 memmove(&result[cursor_position+1], 455 &result[cursor_position], 456 len-cursor_position+1); 457 result[cursor_position] = res; 458 cursor_position++; 459 cursor_form_win++; 460 len++; 461 } else { 462 mvprintw(0, 0, "unknown key: %d\n", res); 463 } 464 break; 465 } 466 if (cursor_form_win < 0) 467 cursor_form_win = 0; 468 else if (cursor_form_win > prompt_width-1) 469 cursor_form_win = prompt_width-1; 470 471 wmove(form_win, 0, 0); 472 wclrtoeol(form_win); 473 mvwprintw(form_win, 0, 0, "%*s", prompt_width, " "); 474 mvwprintw(form_win, 0, 0, "%s", 475 result + cursor_position-cursor_form_win); 476 wmove(form_win, 0, cursor_form_win); 477 touchwin(win); 478 refresh_all_windows(main_window); 479 480 if (res == 10) { 481 res = 0; 482 break; 483 } else if (res == 27 || res == KEY_F(F_BACK) || 484 res == KEY_F(F_EXIT)) { 485 res = KEY_EXIT; 486 break; 487 } else if (res == KEY_F(F_HELP)) { 488 res = 1; 489 break; 490 } 491 } 492 493 /* hide the cursor */ 494 curs_set(0); 495 del_panel(panel); 496 delwin(prompt_win); 497 delwin(form_win); 498 delwin(win); 499 return res; 500 } 501 502 /* refresh all windows in the correct order */ 503 void refresh_all_windows(WINDOW *main_window) 504 { 505 update_panels(); 506 touchwin(main_window); 507 refresh(); 508 } 509 510 void show_scroll_win(WINDOW *main_window, 511 const char *title, 512 const char *text) 513 { 514 (void)show_scroll_win_ext(main_window, title, (char *)text, NULL, NULL, NULL, NULL); 515 } 516 517 /* layman's scrollable window... */ 518 int show_scroll_win_ext(WINDOW *main_window, const char *title, char *text, 519 int *vscroll, int *hscroll, 520 extra_key_cb_fn extra_key_cb, void *data) 521 { 522 int res; 523 int total_lines = get_line_no(text); 524 int x, y, lines, columns; 525 int start_x = 0, start_y = 0; 526 int text_lines = 0, text_cols = 0; 527 int total_cols = 0; 528 int win_cols = 0; 529 int win_lines = 0; 530 int i = 0; 531 WINDOW *win; 532 WINDOW *pad; 533 PANEL *panel; 534 bool done = false; 535 536 if (hscroll) 537 start_x = *hscroll; 538 if (vscroll) 539 start_y = *vscroll; 540 541 getmaxyx(stdscr, lines, columns); 542 543 /* find the widest line of msg: */ 544 total_lines = get_line_no(text); 545 for (i = 0; i < total_lines; i++) { 546 const char *line = get_line(text, i); 547 int len = get_line_length(line); 548 total_cols = max(total_cols, len+2); 549 } 550 551 /* create the pad */ 552 pad = newpad(total_lines+10, total_cols+10); 553 wattrset(pad, attr_scrollwin_text); 554 fill_window(pad, text); 555 556 win_lines = min(total_lines+4, lines-2); 557 win_cols = min(total_cols+2, columns-2); 558 text_lines = max(win_lines-4, 0); 559 text_cols = max(win_cols-2, 0); 560 561 /* place window in middle of screen */ 562 y = (lines-win_lines)/2; 563 x = (columns-win_cols)/2; 564 565 win = newwin(win_lines, win_cols, y, x); 566 keypad(win, TRUE); 567 /* show the help in the help window, and show the help panel */ 568 wattrset(win, attr_scrollwin_box); 569 box(win, 0, 0); 570 wattrset(win, attr_scrollwin_heading); 571 mvwprintw(win, 0, 3, " %s ", title); 572 panel = new_panel(win); 573 574 /* handle scrolling */ 575 while (!done) { 576 copywin(pad, win, start_y, start_x, 2, 2, text_lines, 577 text_cols, 0); 578 print_in_middle(win, 579 text_lines+2, 580 text_cols, 581 "<OK>", 582 attr_dialog_menu_fore); 583 wrefresh(win); 584 585 res = wgetch(win); 586 switch (res) { 587 case KEY_NPAGE: 588 case ' ': 589 case 'd': 590 start_y += text_lines-2; 591 break; 592 case KEY_PPAGE: 593 case 'u': 594 start_y -= text_lines+2; 595 break; 596 case KEY_HOME: 597 start_y = 0; 598 break; 599 case KEY_END: 600 start_y = total_lines-text_lines; 601 break; 602 case KEY_DOWN: 603 case 'j': 604 start_y++; 605 break; 606 case KEY_UP: 607 case 'k': 608 start_y--; 609 break; 610 case KEY_LEFT: 611 case 'h': 612 start_x--; 613 break; 614 case KEY_RIGHT: 615 case 'l': 616 start_x++; 617 break; 618 default: 619 if (extra_key_cb) { 620 size_t start = (get_line(text, start_y) - text); 621 size_t end = (get_line(text, start_y + text_lines) - text); 622 623 if (extra_key_cb(res, start, end, data)) { 624 done = true; 625 break; 626 } 627 } 628 } 629 if (res == 0 || res == 10 || res == 27 || res == 'q' || 630 res == KEY_F(F_HELP) || res == KEY_F(F_BACK) || 631 res == KEY_F(F_EXIT)) 632 break; 633 if (start_y < 0) 634 start_y = 0; 635 if (start_y >= total_lines-text_lines) 636 start_y = total_lines-text_lines; 637 if (start_x < 0) 638 start_x = 0; 639 if (start_x >= total_cols-text_cols) 640 start_x = total_cols-text_cols; 641 } 642 643 if (hscroll) 644 *hscroll = start_x; 645 if (vscroll) 646 *vscroll = start_y; 647 del_panel(panel); 648 delwin(win); 649 refresh_all_windows(main_window); 650 return res; 651 } 652