scripts/kconfig/nconf.gui.c

   1 /*
   2  * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com?
   3  * Released under the terms of the GNU GPL v2.0.
   4  *
   5  * Derived from menuconfig.
   6  *
   7  */
   8 #include "nconf.h"
   9
  10 /* a list of all the different widgets we use */
  11 attributes_t attributes[ATTR_MAX+1] = {0};
  12
  13 /* available colors:
  14    COLOR_BLACK   0
  15    COLOR_RED     1
  16    COLOR_GREEN   2
  17    COLOR_YELLOW  3
  18    COLOR_BLUE    4
  19    COLOR_MAGENTA 5
  20    COLOR_CYAN    6
  21    COLOR_WHITE   7
  22    */
  23 static void set_normal_colors(void)
  24 {
  25         init_pair(NORMAL, -1, -1);
  26         init_pair(MAIN_HEADING, COLOR_MAGENTA, -1);
  27
  28         /* FORE is for the selected item */
  29         init_pair(MAIN_MENU_FORE, -1, -1);
  30         /* BACK for all the rest */
  31         init_pair(MAIN_MENU_BACK, -1, -1);
  32         init_pair(MAIN_MENU_GREY, -1, -1);
  33         init_pair(MAIN_MENU_HEADING, COLOR_GREEN, -1);
  34         init_pair(MAIN_MENU_BOX, COLOR_YELLOW, -1);
  35
  36         init_pair(SCROLLWIN_TEXT, -1, -1);
  37         init_pair(SCROLLWIN_HEADING, COLOR_GREEN, -1);
  38         init_pair(SCROLLWIN_BOX, COLOR_YELLOW, -1);
  39
  40         init_pair(DIALOG_TEXT, -1, -1);
  41         init_pair(DIALOG_BOX, COLOR_YELLOW, -1);
  42         init_pair(DIALOG_MENU_BACK, COLOR_YELLOW, -1);
  43         init_pair(DIALOG_MENU_FORE, COLOR_RED, -1);
  44
  45         init_pair(INPUT_BOX, COLOR_YELLOW, -1);
  46         init_pair(INPUT_HEADING, COLOR_GREEN, -1);
  47         init_pair(INPUT_TEXT, -1, -1);
  48         init_pair(INPUT_FIELD, -1, -1);
  49
  50         init_pair(FUNCTION_HIGHLIGHT, -1, -1);
  51         init_pair(FUNCTION_TEXT, COLOR_BLUE, -1);
  52 }
  53
  54 /* available attributes:
  55    A_NORMAL        Normal display (no highlight)
  56    A_STANDOUT      Best highlighting mode of the terminal.
  57    A_UNDERLINE     Underlining
  58    A_REVERSE       Reverse video
  59    A_BLINK         Blinking
  60    A_DIM           Half bright
  61    A_BOLD          Extra bright or bold
  62    A_PROTECT       Protected mode
  63    A_INVIS         Invisible or blank mode
  64    A_ALTCHARSET    Alternate character set
  65    A_CHARTEXT      Bit-mask to extract a character
  66    COLOR_PAIR(n)   Color-pair number n
  67    */
  68 static void normal_color_theme(void)
  69 {
  70         /* automatically add color... */
  71 #define mkattr(name, attr) do { \
  72 attributes[name] = attr | COLOR_PAIR(name); } while (0)
  73         mkattr(NORMAL, NORMAL);
  74         mkattr(MAIN_HEADING, A_BOLD | A_UNDERLINE);
  75
  76         mkattr(MAIN_MENU_FORE, A_REVERSE);
  77         mkattr(MAIN_MENU_BACK, A_NORMAL);
  78         mkattr(MAIN_MENU_GREY, A_NORMAL);
  79         mkattr(MAIN_MENU_HEADING, A_BOLD);
  80         mkattr(MAIN_MENU_BOX, A_NORMAL);
  81
  82         mkattr(SCROLLWIN_TEXT, A_NORMAL);
  83         mkattr(SCROLLWIN_HEADING, A_BOLD);
  84         mkattr(SCROLLWIN_BOX, A_BOLD);
  85
  86         mkattr(DIALOG_TEXT, A_BOLD);
  87         mkattr(DIALOG_BOX, A_BOLD);
  88         mkattr(DIALOG_MENU_FORE, A_STANDOUT);
  89         mkattr(DIALOG_MENU_BACK, A_NORMAL);
  90
  91         mkattr(INPUT_BOX, A_NORMAL);
  92         mkattr(INPUT_HEADING, A_BOLD);
  93         mkattr(INPUT_TEXT, A_NORMAL);
  94         mkattr(INPUT_FIELD, A_UNDERLINE);
  95
  96         mkattr(FUNCTION_HIGHLIGHT, A_BOLD);
  97         mkattr(FUNCTION_TEXT, A_REVERSE);
  98 }
  99
 100 static void no_colors_theme(void)
 101 {
 102         /* automatically add highlight, no color */
 103 #define mkattrn(name, attr) { attributes[name] = attr; }
 104
 105         mkattrn(NORMAL, NORMAL);
 106         mkattrn(MAIN_HEADING, A_BOLD | A_UNDERLINE);
 107
 108         mkattrn(MAIN_MENU_FORE, A_STANDOUT);
 109         mkattrn(MAIN_MENU_BACK, A_NORMAL);
 110         mkattrn(MAIN_MENU_GREY, A_NORMAL);
 111         mkattrn(MAIN_MENU_HEADING, A_BOLD);
 112         mkattrn(MAIN_MENU_BOX, A_NORMAL);
 113
 114         mkattrn(SCROLLWIN_TEXT, A_NORMAL);
 115         mkattrn(SCROLLWIN_HEADING, A_BOLD);
 116         mkattrn(SCROLLWIN_BOX, A_BOLD);
 117
 118         mkattrn(DIALOG_TEXT, A_NORMAL);
 119         mkattrn(DIALOG_BOX, A_BOLD);
 120         mkattrn(DIALOG_MENU_FORE, A_STANDOUT);
 121         mkattrn(DIALOG_MENU_BACK, A_NORMAL);
 122
 123         mkattrn(INPUT_BOX, A_BOLD);
 124         mkattrn(INPUT_HEADING, A_BOLD);
 125         mkattrn(INPUT_TEXT, A_NORMAL);
 126         mkattrn(INPUT_FIELD, A_UNDERLINE);
 127
 128         mkattrn(FUNCTION_HIGHLIGHT, A_BOLD);
 129         mkattrn(FUNCTION_TEXT, A_REVERSE);
 130 }
 131
 132 void set_colors()
 133 {
 134         start_color();
 135         use_default_colors();
 136         set_normal_colors();
 137         if (has_colors()) {
 138                 normal_color_theme();
 139         } else {
 140                 /* give defaults */
 141                 no_colors_theme();
 142         }
 143 }
 144
 145
 146 /* this changes the windows attributes !!! */
 147 void print_in_middle(WINDOW *win,
 148                 int starty,
 149                 int startx,
 150                 int width,
 151                 const char *string,
 152                 chtype color)
 153 {      int length, x, y;
 154         float temp;
 155
 156
 157         if (win == NULL)
 158                 win = stdscr;
 159         getyx(win, y, x);
 160         if (startx != 0)
 161                 x = startx;
 162         if (starty != 0)
 163                 y = starty;
 164         if (width == 0)
 165                 width = 80;
 166
 167         length = strlen(string);
 168         temp = (width - length) / 2;
 169         x = startx + (int)temp;
 170         (void) wattrset(win, color);
 171         mvwprintw(win, y, x, "%s", string);
 172         refresh();
 173 }
 174
 175 int get_line_no(const char *text)
 176 {
 177         int i;
 178         int total = 1;
 179
 180         if (!text)
 181                 return 0;
 182
 183         for (i = 0; text[i] != '\0'; i++)
 184                 if (text[i] == '\n')
 185                         total++;
 186         return total;
 187 }
 188
 189 const char *get_line(const char *text, int line_no)
 190 {
 191         int i;
 192         int lines = 0;
 193
 194         if (!text)
 195                 return 0;
 196
 197         for (i = 0; text[i] != '\0' && lines < line_no; i++)
 198                 if (text[i] == '\n')
 199                         lines++;
 200         return text+i;
 201 }
 202
 203 int get_line_length(const char *line)
 204 {
 205         int res = 0;
 206         while (*line != '\0' && *line != '\n') {
 207                 line++;
 208                 res++;
 209         }
 210         return res;
 211 }
 212
 213 /* print all lines to the window. */
 214 void fill_window(WINDOW *win, const char *text)
 215 {
 216         int x, y;
 217         int total_lines = get_line_no(text);
 218         int i;
 219
 220         getmaxyx(win, y, x);
 221         /* do not go over end of line */
 222         total_lines = min(total_lines, y);
 223         for (i = 0; i < total_lines; i++) {
 224                 char tmp[x+10];
 225                 const char *line = get_line(text, i);
 226                 int len = get_line_length(line);
 227                 strncpy(tmp, line, min(len, x));
 228                 tmp[len] = '\0';
 229                 mvwprintw(win, i, 0, "%s", tmp);
 230         }
 231 }
 232
 233 /* get the message, and buttons.
 234  * each button must be a char*
 235  * return the selected button
 236  *
 237  * this dialog is used for 2 different things:
 238  * 1) show a text box, no buttons.
 239  * 2) show a dialog, with horizontal buttons
 240  */
 241 int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
 242 {
 243         va_list ap;
 244         char *btn;
 245         int btns_width = 0;
 246         int msg_lines = 0;
 247         int msg_width = 0;
 248         int total_width;
 249         int win_rows = 0;
 250         WINDOW *win;
 251         WINDOW *msg_win;
 252         WINDOW *menu_win;
 253         MENU *menu;
 254         ITEM *btns[btn_num+1];
 255         int i, x, y;
 256         int res = -1;
 257
 258
 259         va_start(ap, btn_num);
 260         for (i = 0; i < btn_num; i++) {
 261                 btn = va_arg(ap, char *);
 262                 btns[i] = new_item(btn, "");
 263                 btns_width += strlen(btn)+1;
 264         }
 265         va_end(ap);
 266         btns[btn_num] = NULL;
 267
 268         /* find the widest line of msg: */
 269         msg_lines = get_line_no(msg);
 270         for (i = 0; i < msg_lines; i++) {
 271                 const char *line = get_line(msg, i);
 272                 int len = get_line_length(line);
 273                 if (msg_width < len)
 274                         msg_width = len;
 275         }
 276
 277         total_width = max(msg_width, btns_width);
 278         /* place dialog in middle of screen */
 279         y = (LINES-(msg_lines+4))/2;
 280         x = (COLS-(total_width+4))/2;
 281
 282
 283         /* create the windows */
 284         if (btn_num > 0)
 285                 win_rows = msg_lines+4;
 286         else
 287                 win_rows = msg_lines+2;
 288
 289         win = newwin(win_rows, total_width+4, y, x);
 290         keypad(win, TRUE);
 291         menu_win = derwin(win, 1, btns_width, win_rows-2,
 292                         1+(total_width+2-btns_width)/2);
 293         menu = new_menu(btns);
 294         msg_win = derwin(win, win_rows-2, msg_width, 1,
 295                         1+(total_width+2-msg_width)/2);
 296
 297         set_menu_fore(menu, attributes[DIALOG_MENU_FORE]);
 298         set_menu_back(menu, attributes[DIALOG_MENU_BACK]);
 299
 300         (void) wattrset(win, attributes[DIALOG_BOX]);
 301         box(win, 0, 0);
 302
 303         /* print message */
 304         (void) wattrset(msg_win, attributes[DIALOG_TEXT]);
 305         fill_window(msg_win, msg);
 306
 307         set_menu_win(menu, win);
 308         set_menu_sub(menu, menu_win);
 309         set_menu_format(menu, 1, btn_num);
 310         menu_opts_off(menu, O_SHOWDESC);
 311         menu_opts_off(menu, O_SHOWMATCH);
 312         menu_opts_on(menu, O_ONEVALUE);
 313         menu_opts_on(menu, O_NONCYCLIC);
 314         set_menu_mark(menu, "");
 315         post_menu(menu);
 316
 317
 318         touchwin(win);
 319         refresh_all_windows(main_window);
 320         while ((res = wgetch(win))) {
 321                 switch (res) {
 322                 case KEY_LEFT:
 323                         menu_driver(menu, REQ_LEFT_ITEM);
 324                         break;
 325                 case KEY_RIGHT:
 326                         menu_driver(menu, REQ_RIGHT_ITEM);
 327                         break;
 328                 case 10: /* ENTER */
 329                 case 27: /* ESCAPE */
 330                 case ' ':
 331                 case KEY_F(F_BACK):
 332                 case KEY_F(F_EXIT):
 333                         break;
 334                 }
 335                 touchwin(win);
 336                 refresh_all_windows(main_window);
 337
 338                 if (res == 10 || res == ' ') {
 339                         res = item_index(current_item(menu));
 340                         break;
 341                 } else if (res == 27 || res == KEY_F(F_BACK) ||
 342                                 res == KEY_F(F_EXIT)) {
 343                         res = KEY_EXIT;
 344                         break;
 345                 }
 346         }
 347
 348         unpost_menu(menu);
 349         free_menu(menu);
 350         for (i = 0; i < btn_num; i++)
 351                 free_item(btns[i]);
 352
 353         delwin(win);
 354         return res;
 355 }
 356
 357 int dialog_inputbox(WINDOW *main_window,
 358                 const char *title, const char *prompt,
 359                 const char *init, char *result, int result_len)
 360 {
 361         int prompt_lines = 0;
 362         int prompt_width = 0;
 363         WINDOW *win;
 364         WINDOW *prompt_win;
 365         WINDOW *form_win;
 366         PANEL *panel;
 367         int i, x, y;
 368         int res = -1;
 369         int cursor_position = strlen(init);
 370
 371
 372         /* find the widest line of msg: */
 373         prompt_lines = get_line_no(prompt);
 374         for (i = 0; i < prompt_lines; i++) {
 375                 const char *line = get_line(prompt, i);
 376                 int len = get_line_length(line);
 377                 prompt_width = max(prompt_width, len);
 378         }
 379
 380         if (title)
 381                 prompt_width = max(prompt_width, strlen(title));
 382
 383         /* place dialog in middle of screen */
 384         y = (LINES-(prompt_lines+4))/2;
 385         x = (COLS-(prompt_width+4))/2;
 386
 387         strncpy(result, init, result_len);
 388
 389         /* create the windows */
 390         win = newwin(prompt_lines+6, prompt_width+7, y, x);
 391         prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2);
 392         form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2);
 393         keypad(form_win, TRUE);
 394
 395         (void) wattrset(form_win, attributes[INPUT_FIELD]);
 396
 397         (void) wattrset(win, attributes[INPUT_BOX]);
 398         box(win, 0, 0);
 399         (void) wattrset(win, attributes[INPUT_HEADING]);
 400         if (title)
 401                 mvwprintw(win, 0, 3, "%s", title);
 402
 403         /* print message */
 404         (void) wattrset(prompt_win, attributes[INPUT_TEXT]);
 405         fill_window(prompt_win, prompt);
 406
 407         mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
 408         mvwprintw(form_win, 0, 0, "%s", result);
 409
 410         /* create panels */
 411         panel = new_panel(win);
 412
 413         /* show the cursor */
 414         curs_set(1);
 415
 416         touchwin(win);
 417         refresh_all_windows(main_window);
 418         while ((res = wgetch(form_win))) {
 419                 int len = strlen(result);
 420                 switch (res) {
 421                 case 10: /* ENTER */
 422                 case 27: /* ESCAPE */
 423                 case KEY_F(F_HELP):
 424                 case KEY_F(F_EXIT):
 425                 case KEY_F(F_BACK):
 426                         break;
 427                 case 127:
 428                 case KEY_BACKSPACE:
 429                         if (cursor_position > 0) {
 430                                 memmove(&result[cursor_position-1],
 431                                                 &result[cursor_position],
 432                                                 len-cursor_position+1);
 433                                 cursor_position--;
 434                         }
 435                         break;
 436                 case KEY_DC:
 437                         if (cursor_position >= 0 && cursor_position < len) {
 438                                 memmove(&result[cursor_position],
 439                                                 &result[cursor_position+1],
 440                                                 len-cursor_position+1);
 441                         }
 442                         break;
 443                 case KEY_UP:
 444                 case KEY_RIGHT:
 445                         if (cursor_position < len &&
 446                             cursor_position < min(result_len, prompt_width))
 447                                 cursor_position++;
 448                         break;
 449                 case KEY_DOWN:
 450                 case KEY_LEFT:
 451                         if (cursor_position > 0)
 452                                 cursor_position--;
 453                         break;
 454                 default:
 455                         if ((isgraph(res) || isspace(res)) &&
 456                                         len-2 < result_len) {
 457                                 /* insert the char at the proper position */
 458                                 memmove(&result[cursor_position+1],
 459                                                 &result[cursor_position],
 460                                                 len+1);
 461                                 result[cursor_position] = res;
 462                                 cursor_position++;
 463                         } else {
 464                                 mvprintw(0, 0, "unknow key: %d\n", res);
 465                         }
 466                         break;
 467                 }
 468                 wmove(form_win, 0, 0);
 469                 wclrtoeol(form_win);
 470                 mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
 471                 mvwprintw(form_win, 0, 0, "%s", result);
 472                 wmove(form_win, 0, cursor_position);
 473                 touchwin(win);
 474                 refresh_all_windows(main_window);
 475
 476                 if (res == 10) {
 477                         res = 0;
 478                         break;
 479                 } else if (res == 27 || res == KEY_F(F_BACK) ||
 480                                 res == KEY_F(F_EXIT)) {
 481                         res = KEY_EXIT;
 482                         break;
 483                 } else if (res == KEY_F(F_HELP)) {
 484                         res = 1;
 485                         break;
 486                 }
 487         }
 488
 489         /* hide the cursor */
 490         curs_set(0);
 491         del_panel(panel);
 492         delwin(prompt_win);
 493         delwin(form_win);
 494         delwin(win);
 495         return res;
 496 }
 497
 498 /* refresh all windows in the correct order */
 499 void refresh_all_windows(WINDOW *main_window)
 500 {
 501         update_panels();
 502         touchwin(main_window);
 503         refresh();
 504 }
 505
 506 /* layman's scrollable window... */
 507 void show_scroll_win(WINDOW *main_window,
 508                 const char *title,
 509                 const char *text)
 510 {
 511         int res;
 512         int total_lines = get_line_no(text);
 513         int x, y;
 514         int start_x = 0, start_y = 0;
 515         int text_lines = 0, text_cols = 0;
 516         int total_cols = 0;
 517         int win_cols = 0;
 518         int win_lines = 0;
 519         int i = 0;
 520         WINDOW *win;
 521         WINDOW *pad;
 522         PANEL *panel;
 523
 524         /* find the widest line of msg: */
 525         total_lines = get_line_no(text);
 526         for (i = 0; i < total_lines; i++) {
 527                 const char *line = get_line(text, i);
 528                 int len = get_line_length(line);
 529                 total_cols = max(total_cols, len+2);
 530         }
 531
 532         /* create the pad */
 533         pad = newpad(total_lines+10, total_cols+10);
 534         (void) wattrset(pad, attributes[SCROLLWIN_TEXT]);
 535         fill_window(pad, text);
 536
 537         win_lines = min(total_lines+4, LINES-2);
 538         win_cols = min(total_cols+2, COLS-2);
 539         text_lines = max(win_lines-4, 0);
 540         text_cols = max(win_cols-2, 0);
 541
 542         /* place window in middle of screen */
 543         y = (LINES-win_lines)/2;
 544         x = (COLS-win_cols)/2;
 545
 546         win = newwin(win_lines, win_cols, y, x);
 547         keypad(win, TRUE);
 548         /* show the help in the help window, and show the help panel */
 549         (void) wattrset(win, attributes[SCROLLWIN_BOX]);
 550         box(win, 0, 0);
 551         (void) wattrset(win, attributes[SCROLLWIN_HEADING]);
 552         mvwprintw(win, 0, 3, " %s ", title);
 553         panel = new_panel(win);
 554
 555         /* handle scrolling */
 556         do {
 557
 558                 copywin(pad, win, start_y, start_x, 2, 2, text_lines,
 559                                 text_cols, 0);
 560                 print_in_middle(win,
 561                                 text_lines+2,
 562                                 0,
 563                                 text_cols,
 564                                 "<OK>",
 565                                 attributes[DIALOG_MENU_FORE]);
 566                 wrefresh(win);
 567
 568                 res = wgetch(win);
 569                 switch (res) {
 570                 case KEY_NPAGE:
 571                 case ' ':
 572                         start_y += text_lines-2;
 573                         break;
 574                 case KEY_PPAGE:
 575                         start_y -= text_lines+2;
 576                         break;
 577                 case KEY_HOME:
 578                         start_y = 0;
 579                         break;
 580                 case KEY_END:
 581                         start_y = total_lines-text_lines;
 582                         break;
 583                 case KEY_DOWN:
 584                 case 'j':
 585                         start_y++;
 586                         break;
 587                 case KEY_UP:
 588                 case 'k':
 589                         start_y--;
 590                         break;
 591                 case KEY_LEFT:
 592                 case 'h':
 593                         start_x--;
 594                         break;
 595                 case KEY_RIGHT:
 596                 case 'l':
 597                         start_x++;
 598                         break;
 599                 }
 600                 if (res == 10 || res == 27 || res == 'q'
 601                     || res == KEY_F(F_BACK) || res == KEY_F(F_EXIT)) {
 602                         break;
 603                 }
 604                 if (start_y < 0)
 605                         start_y = 0;
 606                 if (start_y >= total_lines-text_lines)
 607                         start_y = total_lines-text_lines;
 608                 if (start_x < 0)
 609                         start_x = 0;
 610                 if (start_x >= total_cols-text_cols)
 611                         start_x = total_cols-text_cols;
 612         } while (res);
 613
 614         del_panel(panel);
 615         delwin(win);
 616         refresh_all_windows(main_window);
 617 }