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 */
set_normal_colors(void)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_YELLOW, -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 */
normal_color_theme(void)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
no_colors_theme(void)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
set_colors()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 !!! */
print_in_middle(WINDOW * win,int starty,int startx,int width,const char * string,chtype color)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
get_line_no(const char * text)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
get_line(const char * text,int line_no)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
get_line_length(const char * line)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. */
fill_window(WINDOW * win,const char * text)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 */
btn_dialog(WINDOW * main_window,const char * msg,int btn_num,...)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 = (getmaxy(stdscr)-(msg_lines+4))/2;
280 x = (getmaxx(stdscr)-(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
dialog_inputbox(WINDOW * main_window,const char * title,const char * prompt,const char * init,char ** resultp,int * result_len)357 int dialog_inputbox(WINDOW *main_window,
358 const char *title, const char *prompt,
359 const char *init, char **resultp, 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 int cursor_form_win;
371 char *result = *resultp;
372
373 if (strlen(init)+1 > *result_len) {
374 *result_len = strlen(init)+1;
375 *resultp = result = realloc(result, *result_len);
376 }
377
378 /* find the widest line of msg: */
379 prompt_lines = get_line_no(prompt);
380 for (i = 0; i < prompt_lines; i++) {
381 const char *line = get_line(prompt, i);
382 int len = get_line_length(line);
383 prompt_width = max(prompt_width, len);
384 }
385
386 if (title)
387 prompt_width = max(prompt_width, strlen(title));
388
389 /* place dialog in middle of screen */
390 y = (getmaxy(stdscr)-(prompt_lines+4))/2;
391 x = (getmaxx(stdscr)-(prompt_width+4))/2;
392
393 strncpy(result, init, *result_len);
394
395 /* create the windows */
396 win = newwin(prompt_lines+6, prompt_width+7, y, x);
397 prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2);
398 form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2);
399 keypad(form_win, TRUE);
400
401 (void) wattrset(form_win, attributes[INPUT_FIELD]);
402
403 (void) wattrset(win, attributes[INPUT_BOX]);
404 box(win, 0, 0);
405 (void) wattrset(win, attributes[INPUT_HEADING]);
406 if (title)
407 mvwprintw(win, 0, 3, "%s", title);
408
409 /* print message */
410 (void) wattrset(prompt_win, attributes[INPUT_TEXT]);
411 fill_window(prompt_win, prompt);
412
413 mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
414 cursor_form_win = min(cursor_position, prompt_width-1);
415 mvwprintw(form_win, 0, 0, "%s",
416 result + cursor_position-cursor_form_win);
417
418 /* create panels */
419 panel = new_panel(win);
420
421 /* show the cursor */
422 curs_set(1);
423
424 touchwin(win);
425 refresh_all_windows(main_window);
426 while ((res = wgetch(form_win))) {
427 int len = strlen(result);
428 switch (res) {
429 case 10: /* ENTER */
430 case 27: /* ESCAPE */
431 case KEY_F(F_HELP):
432 case KEY_F(F_EXIT):
433 case KEY_F(F_BACK):
434 break;
435 case 127:
436 case KEY_BACKSPACE:
437 if (cursor_position > 0) {
438 memmove(&result[cursor_position-1],
439 &result[cursor_position],
440 len-cursor_position+1);
441 cursor_position--;
442 cursor_form_win--;
443 len--;
444 }
445 break;
446 case KEY_DC:
447 if (cursor_position >= 0 && cursor_position < len) {
448 memmove(&result[cursor_position],
449 &result[cursor_position+1],
450 len-cursor_position+1);
451 len--;
452 }
453 break;
454 case KEY_UP:
455 case KEY_RIGHT:
456 if (cursor_position < len) {
457 cursor_position++;
458 cursor_form_win++;
459 }
460 break;
461 case KEY_DOWN:
462 case KEY_LEFT:
463 if (cursor_position > 0) {
464 cursor_position--;
465 cursor_form_win--;
466 }
467 break;
468 case KEY_HOME:
469 cursor_position = 0;
470 cursor_form_win = 0;
471 break;
472 case KEY_END:
473 cursor_position = len;
474 cursor_form_win = min(cursor_position, prompt_width-1);
475 break;
476 default:
477 if ((isgraph(res) || isspace(res))) {
478 /* one for new char, one for '\0' */
479 if (len+2 > *result_len) {
480 *result_len = len+2;
481 *resultp = result = realloc(result,
482 *result_len);
483 }
484 /* insert the char at the proper position */
485 memmove(&result[cursor_position+1],
486 &result[cursor_position],
487 len-cursor_position+1);
488 result[cursor_position] = res;
489 cursor_position++;
490 cursor_form_win++;
491 len++;
492 } else {
493 mvprintw(0, 0, "unknown key: %d\n", res);
494 }
495 break;
496 }
497 if (cursor_form_win < 0)
498 cursor_form_win = 0;
499 else if (cursor_form_win > prompt_width-1)
500 cursor_form_win = prompt_width-1;
501
502 wmove(form_win, 0, 0);
503 wclrtoeol(form_win);
504 mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
505 mvwprintw(form_win, 0, 0, "%s",
506 result + cursor_position-cursor_form_win);
507 wmove(form_win, 0, cursor_form_win);
508 touchwin(win);
509 refresh_all_windows(main_window);
510
511 if (res == 10) {
512 res = 0;
513 break;
514 } else if (res == 27 || res == KEY_F(F_BACK) ||
515 res == KEY_F(F_EXIT)) {
516 res = KEY_EXIT;
517 break;
518 } else if (res == KEY_F(F_HELP)) {
519 res = 1;
520 break;
521 }
522 }
523
524 /* hide the cursor */
525 curs_set(0);
526 del_panel(panel);
527 delwin(prompt_win);
528 delwin(form_win);
529 delwin(win);
530 return res;
531 }
532
533 /* refresh all windows in the correct order */
refresh_all_windows(WINDOW * main_window)534 void refresh_all_windows(WINDOW *main_window)
535 {
536 update_panels();
537 touchwin(main_window);
538 refresh();
539 }
540
541 /* layman's scrollable window... */
show_scroll_win(WINDOW * main_window,const char * title,const char * text)542 void show_scroll_win(WINDOW *main_window,
543 const char *title,
544 const char *text)
545 {
546 int res;
547 int total_lines = get_line_no(text);
548 int x, y, lines, columns;
549 int start_x = 0, start_y = 0;
550 int text_lines = 0, text_cols = 0;
551 int total_cols = 0;
552 int win_cols = 0;
553 int win_lines = 0;
554 int i = 0;
555 WINDOW *win;
556 WINDOW *pad;
557 PANEL *panel;
558
559 getmaxyx(stdscr, lines, columns);
560
561 /* find the widest line of msg: */
562 total_lines = get_line_no(text);
563 for (i = 0; i < total_lines; i++) {
564 const char *line = get_line(text, i);
565 int len = get_line_length(line);
566 total_cols = max(total_cols, len+2);
567 }
568
569 /* create the pad */
570 pad = newpad(total_lines+10, total_cols+10);
571 (void) wattrset(pad, attributes[SCROLLWIN_TEXT]);
572 fill_window(pad, text);
573
574 win_lines = min(total_lines+4, lines-2);
575 win_cols = min(total_cols+2, columns-2);
576 text_lines = max(win_lines-4, 0);
577 text_cols = max(win_cols-2, 0);
578
579 /* place window in middle of screen */
580 y = (lines-win_lines)/2;
581 x = (columns-win_cols)/2;
582
583 win = newwin(win_lines, win_cols, y, x);
584 keypad(win, TRUE);
585 /* show the help in the help window, and show the help panel */
586 (void) wattrset(win, attributes[SCROLLWIN_BOX]);
587 box(win, 0, 0);
588 (void) wattrset(win, attributes[SCROLLWIN_HEADING]);
589 mvwprintw(win, 0, 3, " %s ", title);
590 panel = new_panel(win);
591
592 /* handle scrolling */
593 do {
594
595 copywin(pad, win, start_y, start_x, 2, 2, text_lines,
596 text_cols, 0);
597 print_in_middle(win,
598 text_lines+2,
599 0,
600 text_cols,
601 "<OK>",
602 attributes[DIALOG_MENU_FORE]);
603 wrefresh(win);
604
605 res = wgetch(win);
606 switch (res) {
607 case KEY_NPAGE:
608 case ' ':
609 case 'd':
610 start_y += text_lines-2;
611 break;
612 case KEY_PPAGE:
613 case 'u':
614 start_y -= text_lines+2;
615 break;
616 case KEY_HOME:
617 start_y = 0;
618 break;
619 case KEY_END:
620 start_y = total_lines-text_lines;
621 break;
622 case KEY_DOWN:
623 case 'j':
624 start_y++;
625 break;
626 case KEY_UP:
627 case 'k':
628 start_y--;
629 break;
630 case KEY_LEFT:
631 case 'h':
632 start_x--;
633 break;
634 case KEY_RIGHT:
635 case 'l':
636 start_x++;
637 break;
638 }
639 if (res == 10 || res == 27 || res == 'q' ||
640 res == KEY_F(F_HELP) || res == KEY_F(F_BACK) ||
641 res == KEY_F(F_EXIT))
642 break;
643 if (start_y < 0)
644 start_y = 0;
645 if (start_y >= total_lines-text_lines)
646 start_y = total_lines-text_lines;
647 if (start_x < 0)
648 start_x = 0;
649 if (start_x >= total_cols-text_cols)
650 start_x = total_cols-text_cols;
651 } while (res);
652
653 del_panel(panel);
654 delwin(win);
655 refresh_all_windows(main_window);
656 }
657