blob: a6dec2832819ff681c12285661e7fe6c75709c95 [file] [log] [blame]
Masahiro Yamada0a9064f2014-07-30 14:08:13 +09001/*
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 *
Tom Rini5b8031c2016-01-14 22:05:13 -05007 * SPDX-License-Identifier: GPL-2.0+
Masahiro Yamada0a9064f2014-07-30 14:08:13 +09008 */
9
10#include <stdarg.h>
11
12#include "dialog.h"
13
14/* Needed in signal handler in mconf.c */
15int saved_x, saved_y;
16
17struct dialog_info dlg;
18
19static void set_mono_theme(void)
20{
21 dlg.screen.atr = A_NORMAL;
22 dlg.shadow.atr = A_NORMAL;
23 dlg.dialog.atr = A_NORMAL;
24 dlg.title.atr = A_BOLD;
25 dlg.border.atr = A_NORMAL;
26 dlg.button_active.atr = A_REVERSE;
27 dlg.button_inactive.atr = A_DIM;
28 dlg.button_key_active.atr = A_REVERSE;
29 dlg.button_key_inactive.atr = A_BOLD;
30 dlg.button_label_active.atr = A_REVERSE;
31 dlg.button_label_inactive.atr = A_NORMAL;
32 dlg.inputbox.atr = A_NORMAL;
33 dlg.inputbox_border.atr = A_NORMAL;
34 dlg.searchbox.atr = A_NORMAL;
35 dlg.searchbox_title.atr = A_BOLD;
36 dlg.searchbox_border.atr = A_NORMAL;
37 dlg.position_indicator.atr = A_BOLD;
38 dlg.menubox.atr = A_NORMAL;
39 dlg.menubox_border.atr = A_NORMAL;
40 dlg.item.atr = A_NORMAL;
41 dlg.item_selected.atr = A_REVERSE;
42 dlg.tag.atr = A_BOLD;
43 dlg.tag_selected.atr = A_REVERSE;
44 dlg.tag_key.atr = A_BOLD;
45 dlg.tag_key_selected.atr = A_REVERSE;
46 dlg.check.atr = A_BOLD;
47 dlg.check_selected.atr = A_REVERSE;
48 dlg.uarrow.atr = A_BOLD;
49 dlg.darrow.atr = A_BOLD;
50}
51
52#define DLG_COLOR(dialog, f, b, h) \
53do { \
54 dlg.dialog.fg = (f); \
55 dlg.dialog.bg = (b); \
56 dlg.dialog.hl = (h); \
57} while (0)
58
59static void set_classic_theme(void)
60{
61 DLG_COLOR(screen, COLOR_CYAN, COLOR_BLUE, true);
62 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, true);
63 DLG_COLOR(dialog, COLOR_BLACK, COLOR_WHITE, false);
64 DLG_COLOR(title, COLOR_YELLOW, COLOR_WHITE, true);
65 DLG_COLOR(border, COLOR_WHITE, COLOR_WHITE, true);
66 DLG_COLOR(button_active, COLOR_WHITE, COLOR_BLUE, true);
67 DLG_COLOR(button_inactive, COLOR_BLACK, COLOR_WHITE, false);
68 DLG_COLOR(button_key_active, COLOR_WHITE, COLOR_BLUE, true);
69 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_WHITE, false);
70 DLG_COLOR(button_label_active, COLOR_YELLOW, COLOR_BLUE, true);
71 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_WHITE, true);
72 DLG_COLOR(inputbox, COLOR_BLACK, COLOR_WHITE, false);
73 DLG_COLOR(inputbox_border, COLOR_BLACK, COLOR_WHITE, false);
74 DLG_COLOR(searchbox, COLOR_BLACK, COLOR_WHITE, false);
75 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_WHITE, true);
76 DLG_COLOR(searchbox_border, COLOR_WHITE, COLOR_WHITE, true);
77 DLG_COLOR(position_indicator, COLOR_YELLOW, COLOR_WHITE, true);
78 DLG_COLOR(menubox, COLOR_BLACK, COLOR_WHITE, false);
79 DLG_COLOR(menubox_border, COLOR_WHITE, COLOR_WHITE, true);
80 DLG_COLOR(item, COLOR_BLACK, COLOR_WHITE, false);
81 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_BLUE, true);
82 DLG_COLOR(tag, COLOR_YELLOW, COLOR_WHITE, true);
83 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_BLUE, true);
84 DLG_COLOR(tag_key, COLOR_YELLOW, COLOR_WHITE, true);
85 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_BLUE, true);
86 DLG_COLOR(check, COLOR_BLACK, COLOR_WHITE, false);
87 DLG_COLOR(check_selected, COLOR_WHITE, COLOR_BLUE, true);
88 DLG_COLOR(uarrow, COLOR_GREEN, COLOR_WHITE, true);
89 DLG_COLOR(darrow, COLOR_GREEN, COLOR_WHITE, true);
90}
91
92static void set_blackbg_theme(void)
93{
94 DLG_COLOR(screen, COLOR_RED, COLOR_BLACK, true);
95 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
96 DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
97 DLG_COLOR(title, COLOR_RED, COLOR_BLACK, false);
98 DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
99
100 DLG_COLOR(button_active, COLOR_YELLOW, COLOR_RED, false);
101 DLG_COLOR(button_inactive, COLOR_YELLOW, COLOR_BLACK, false);
102 DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_RED, true);
103 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_BLACK, false);
104 DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_RED, false);
105 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_BLACK, true);
106
107 DLG_COLOR(inputbox, COLOR_YELLOW, COLOR_BLACK, false);
108 DLG_COLOR(inputbox_border, COLOR_YELLOW, COLOR_BLACK, false);
109
110 DLG_COLOR(searchbox, COLOR_YELLOW, COLOR_BLACK, false);
111 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_BLACK, true);
112 DLG_COLOR(searchbox_border, COLOR_BLACK, COLOR_BLACK, true);
113
114 DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK, false);
115
116 DLG_COLOR(menubox, COLOR_YELLOW, COLOR_BLACK, false);
117 DLG_COLOR(menubox_border, COLOR_BLACK, COLOR_BLACK, true);
118
119 DLG_COLOR(item, COLOR_WHITE, COLOR_BLACK, false);
120 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_RED, false);
121
122 DLG_COLOR(tag, COLOR_RED, COLOR_BLACK, false);
123 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_RED, true);
124 DLG_COLOR(tag_key, COLOR_RED, COLOR_BLACK, false);
125 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED, true);
126
127 DLG_COLOR(check, COLOR_YELLOW, COLOR_BLACK, false);
128 DLG_COLOR(check_selected, COLOR_YELLOW, COLOR_RED, true);
129
130 DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
131 DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
132}
133
134static void set_bluetitle_theme(void)
135{
136 set_classic_theme();
137 DLG_COLOR(title, COLOR_BLUE, COLOR_WHITE, true);
138 DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_BLUE, true);
139 DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_BLUE, true);
140 DLG_COLOR(searchbox_title, COLOR_BLUE, COLOR_WHITE, true);
141 DLG_COLOR(position_indicator, COLOR_BLUE, COLOR_WHITE, true);
142 DLG_COLOR(tag, COLOR_BLUE, COLOR_WHITE, true);
143 DLG_COLOR(tag_key, COLOR_BLUE, COLOR_WHITE, true);
144
145}
146
147/*
148 * Select color theme
149 */
150static int set_theme(const char *theme)
151{
152 int use_color = 1;
153 if (!theme)
154 set_bluetitle_theme();
155 else if (strcmp(theme, "classic") == 0)
156 set_classic_theme();
157 else if (strcmp(theme, "bluetitle") == 0)
158 set_bluetitle_theme();
159 else if (strcmp(theme, "blackbg") == 0)
160 set_blackbg_theme();
161 else if (strcmp(theme, "mono") == 0)
162 use_color = 0;
163
164 return use_color;
165}
166
167static void init_one_color(struct dialog_color *color)
168{
169 static int pair = 0;
170
171 pair++;
172 init_pair(pair, color->fg, color->bg);
173 if (color->hl)
174 color->atr = A_BOLD | COLOR_PAIR(pair);
175 else
176 color->atr = COLOR_PAIR(pair);
177}
178
179static void init_dialog_colors(void)
180{
181 init_one_color(&dlg.screen);
182 init_one_color(&dlg.shadow);
183 init_one_color(&dlg.dialog);
184 init_one_color(&dlg.title);
185 init_one_color(&dlg.border);
186 init_one_color(&dlg.button_active);
187 init_one_color(&dlg.button_inactive);
188 init_one_color(&dlg.button_key_active);
189 init_one_color(&dlg.button_key_inactive);
190 init_one_color(&dlg.button_label_active);
191 init_one_color(&dlg.button_label_inactive);
192 init_one_color(&dlg.inputbox);
193 init_one_color(&dlg.inputbox_border);
194 init_one_color(&dlg.searchbox);
195 init_one_color(&dlg.searchbox_title);
196 init_one_color(&dlg.searchbox_border);
197 init_one_color(&dlg.position_indicator);
198 init_one_color(&dlg.menubox);
199 init_one_color(&dlg.menubox_border);
200 init_one_color(&dlg.item);
201 init_one_color(&dlg.item_selected);
202 init_one_color(&dlg.tag);
203 init_one_color(&dlg.tag_selected);
204 init_one_color(&dlg.tag_key);
205 init_one_color(&dlg.tag_key_selected);
206 init_one_color(&dlg.check);
207 init_one_color(&dlg.check_selected);
208 init_one_color(&dlg.uarrow);
209 init_one_color(&dlg.darrow);
210}
211
212/*
213 * Setup for color display
214 */
215static void color_setup(const char *theme)
216{
217 int use_color;
218
219 use_color = set_theme(theme);
220 if (use_color && has_colors()) {
221 start_color();
222 init_dialog_colors();
223 } else
224 set_mono_theme();
225}
226
227/*
228 * Set window to attribute 'attr'
229 */
230void attr_clear(WINDOW * win, int height, int width, chtype attr)
231{
232 int i, j;
233
234 wattrset(win, attr);
235 for (i = 0; i < height; i++) {
236 wmove(win, i, 0);
237 for (j = 0; j < width; j++)
238 waddch(win, ' ');
239 }
240 touchwin(win);
241}
242
243void dialog_clear(void)
244{
245 int lines, columns;
246
247 lines = getmaxy(stdscr);
248 columns = getmaxx(stdscr);
249
250 attr_clear(stdscr, lines, columns, dlg.screen.atr);
251 /* Display background title if it exists ... - SLH */
252 if (dlg.backtitle != NULL) {
253 int i, len = 0, skip = 0;
254 struct subtitle_list *pos;
255
256 wattrset(stdscr, dlg.screen.atr);
257 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
258
259 for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
260 /* 3 is for the arrow and spaces */
261 len += strlen(pos->text) + 3;
262 }
263
264 wmove(stdscr, 1, 1);
265 if (len > columns - 2) {
266 const char *ellipsis = "[...] ";
267 waddstr(stdscr, ellipsis);
268 skip = len - (columns - 2 - strlen(ellipsis));
269 }
270
271 for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
272 if (skip == 0)
273 waddch(stdscr, ACS_RARROW);
274 else
275 skip--;
276
277 if (skip == 0)
278 waddch(stdscr, ' ');
279 else
280 skip--;
281
282 if (skip < strlen(pos->text)) {
283 waddstr(stdscr, pos->text + skip);
284 skip = 0;
285 } else
286 skip -= strlen(pos->text);
287
288 if (skip == 0)
289 waddch(stdscr, ' ');
290 else
291 skip--;
292 }
293
294 for (i = len + 1; i < columns - 1; i++)
295 waddch(stdscr, ACS_HLINE);
296 }
297 wnoutrefresh(stdscr);
298}
299
300/*
301 * Do some initialization for dialog
302 */
303int init_dialog(const char *backtitle)
304{
305 int height, width;
306
307 initscr(); /* Init curses */
308
309 /* Get current cursor position for signal handler in mconf.c */
310 getyx(stdscr, saved_y, saved_x);
311
312 getmaxyx(stdscr, height, width);
313 if (height < WINDOW_HEIGTH_MIN || width < WINDOW_WIDTH_MIN) {
314 endwin();
315 return -ERRDISPLAYTOOSMALL;
316 }
317
318 dlg.backtitle = backtitle;
319 color_setup(getenv("MENUCONFIG_COLOR"));
320
321 keypad(stdscr, TRUE);
322 cbreak();
323 noecho();
324 dialog_clear();
325
326 return 0;
327}
328
329void set_dialog_backtitle(const char *backtitle)
330{
331 dlg.backtitle = backtitle;
332}
333
334void set_dialog_subtitles(struct subtitle_list *subtitles)
335{
336 dlg.subtitles = subtitles;
337}
338
339/*
340 * End using dialog functions.
341 */
342void end_dialog(int x, int y)
343{
344 /* move cursor back to original position */
345 move(y, x);
346 refresh();
347 endwin();
348}
349
350/* Print the title of the dialog. Center the title and truncate
351 * tile if wider than dialog (- 2 chars).
352 **/
353void print_title(WINDOW *dialog, const char *title, int width)
354{
355 if (title) {
356 int tlen = MIN(width - 2, strlen(title));
357 wattrset(dialog, dlg.title.atr);
358 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
359 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
360 waddch(dialog, ' ');
361 }
362}
363
364/*
365 * Print a string of text in a window, automatically wrap around to the
366 * next line if the string is too long to fit on one line. Newline
367 * characters '\n' are propperly processed. We start on a new line
368 * if there is no room for at least 4 nonblanks following a double-space.
369 */
370void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
371{
372 int newl, cur_x, cur_y;
373 int prompt_len, room, wlen;
374 char tempstr[MAX_LEN + 1], *word, *sp, *sp2, *newline_separator = 0;
375
376 strcpy(tempstr, prompt);
377
378 prompt_len = strlen(tempstr);
379
380 if (prompt_len <= width - x * 2) { /* If prompt is short */
381 wmove(win, y, (width - prompt_len) / 2);
382 waddstr(win, tempstr);
383 } else {
384 cur_x = x;
385 cur_y = y;
386 newl = 1;
387 word = tempstr;
388 while (word && *word) {
389 sp = strpbrk(word, "\n ");
390 if (sp && *sp == '\n')
391 newline_separator = sp;
392
393 if (sp)
394 *sp++ = 0;
395
396 /* Wrap to next line if either the word does not fit,
397 or it is the first word of a new sentence, and it is
398 short, and the next word does not fit. */
399 room = width - cur_x;
400 wlen = strlen(word);
401 if (wlen > room ||
402 (newl && wlen < 4 && sp
403 && wlen + 1 + strlen(sp) > room
404 && (!(sp2 = strpbrk(sp, "\n "))
405 || wlen + 1 + (sp2 - sp) > room))) {
406 cur_y++;
407 cur_x = x;
408 }
409 wmove(win, cur_y, cur_x);
410 waddstr(win, word);
411 getyx(win, cur_y, cur_x);
412
413 /* Move to the next line if the word separator was a newline */
414 if (newline_separator) {
415 cur_y++;
416 cur_x = x;
417 newline_separator = 0;
418 } else
419 cur_x++;
420
421 if (sp && *sp == ' ') {
422 cur_x++; /* double space */
423 while (*++sp == ' ') ;
424 newl = 1;
425 } else
426 newl = 0;
427 word = sp;
428 }
429 }
430}
431
432/*
433 * Print a button
434 */
435void print_button(WINDOW * win, const char *label, int y, int x, int selected)
436{
437 int i, temp;
438
439 wmove(win, y, x);
440 wattrset(win, selected ? dlg.button_active.atr
441 : dlg.button_inactive.atr);
442 waddstr(win, "<");
443 temp = strspn(label, " ");
444 label += temp;
445 wattrset(win, selected ? dlg.button_label_active.atr
446 : dlg.button_label_inactive.atr);
447 for (i = 0; i < temp; i++)
448 waddch(win, ' ');
449 wattrset(win, selected ? dlg.button_key_active.atr
450 : dlg.button_key_inactive.atr);
451 waddch(win, label[0]);
452 wattrset(win, selected ? dlg.button_label_active.atr
453 : dlg.button_label_inactive.atr);
454 waddstr(win, (char *)label + 1);
455 wattrset(win, selected ? dlg.button_active.atr
456 : dlg.button_inactive.atr);
457 waddstr(win, ">");
458 wmove(win, y, x + temp + 1);
459}
460
461/*
462 * Draw a rectangular box with line drawing characters
463 */
464void
465draw_box(WINDOW * win, int y, int x, int height, int width,
466 chtype box, chtype border)
467{
468 int i, j;
469
470 wattrset(win, 0);
471 for (i = 0; i < height; i++) {
472 wmove(win, y + i, x);
473 for (j = 0; j < width; j++)
474 if (!i && !j)
475 waddch(win, border | ACS_ULCORNER);
476 else if (i == height - 1 && !j)
477 waddch(win, border | ACS_LLCORNER);
478 else if (!i && j == width - 1)
479 waddch(win, box | ACS_URCORNER);
480 else if (i == height - 1 && j == width - 1)
481 waddch(win, box | ACS_LRCORNER);
482 else if (!i)
483 waddch(win, border | ACS_HLINE);
484 else if (i == height - 1)
485 waddch(win, box | ACS_HLINE);
486 else if (!j)
487 waddch(win, border | ACS_VLINE);
488 else if (j == width - 1)
489 waddch(win, box | ACS_VLINE);
490 else
491 waddch(win, box | ' ');
492 }
493}
494
495/*
496 * Draw shadows along the right and bottom edge to give a more 3D look
497 * to the boxes
498 */
499void draw_shadow(WINDOW * win, int y, int x, int height, int width)
500{
501 int i;
502
503 if (has_colors()) { /* Whether terminal supports color? */
504 wattrset(win, dlg.shadow.atr);
505 wmove(win, y + height, x + 2);
506 for (i = 0; i < width; i++)
507 waddch(win, winch(win) & A_CHARTEXT);
508 for (i = y + 1; i < y + height + 1; i++) {
509 wmove(win, i, x + width);
510 waddch(win, winch(win) & A_CHARTEXT);
511 waddch(win, winch(win) & A_CHARTEXT);
512 }
513 wnoutrefresh(win);
514 }
515}
516
517/*
518 * Return the position of the first alphabetic character in a string.
519 */
520int first_alpha(const char *string, const char *exempt)
521{
522 int i, in_paren = 0, c;
523
524 for (i = 0; i < strlen(string); i++) {
525 c = tolower(string[i]);
526
527 if (strchr("<[(", c))
528 ++in_paren;
529 if (strchr(">])", c) && in_paren > 0)
530 --in_paren;
531
532 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
533 return i;
534 }
535
536 return 0;
537}
538
539/*
540 * ncurses uses ESC to detect escaped char sequences. This resutl in
541 * a small timeout before ESC is actually delivered to the application.
542 * lxdialog suggest <ESC> <ESC> which is correctly translated to two
543 * times esc. But then we need to ignore the second esc to avoid stepping
544 * out one menu too much. Filter away all escaped key sequences since
545 * keypad(FALSE) turn off ncurses support for escape sequences - and thats
546 * needed to make notimeout() do as expected.
547 */
548int on_key_esc(WINDOW *win)
549{
550 int key;
551 int key2;
552 int key3;
553
554 nodelay(win, TRUE);
555 keypad(win, FALSE);
556 key = wgetch(win);
557 key2 = wgetch(win);
558 do {
559 key3 = wgetch(win);
560 } while (key3 != ERR);
561 nodelay(win, FALSE);
562 keypad(win, TRUE);
563 if (key == KEY_ESC && key2 == ERR)
564 return KEY_ESC;
565 else if (key != ERR && key != KEY_ESC && key2 == ERR)
566 ungetch(key);
567
568 return -1;
569}
570
571/* redraw screen in new size */
572int on_key_resize(void)
573{
574 dialog_clear();
575 return KEY_RESIZE;
576}
577
578struct dialog_list *item_cur;
579struct dialog_list item_nil;
580struct dialog_list *item_head;
581
582void item_reset(void)
583{
584 struct dialog_list *p, *next;
585
586 for (p = item_head; p; p = next) {
587 next = p->next;
588 free(p);
589 }
590 item_head = NULL;
591 item_cur = &item_nil;
592}
593
594void item_make(const char *fmt, ...)
595{
596 va_list ap;
597 struct dialog_list *p = malloc(sizeof(*p));
598
599 if (item_head)
600 item_cur->next = p;
601 else
602 item_head = p;
603 item_cur = p;
604 memset(p, 0, sizeof(*p));
605
606 va_start(ap, fmt);
607 vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
608 va_end(ap);
609}
610
611void item_add_str(const char *fmt, ...)
612{
613 va_list ap;
614 size_t avail;
615
616 avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
617
618 va_start(ap, fmt);
619 vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
620 avail, fmt, ap);
621 item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
622 va_end(ap);
623}
624
625void item_set_tag(char tag)
626{
627 item_cur->node.tag = tag;
628}
629void item_set_data(void *ptr)
630{
631 item_cur->node.data = ptr;
632}
633
634void item_set_selected(int val)
635{
636 item_cur->node.selected = val;
637}
638
639int item_activate_selected(void)
640{
641 item_foreach()
642 if (item_is_selected())
643 return 1;
644 return 0;
645}
646
647void *item_data(void)
648{
649 return item_cur->node.data;
650}
651
652char item_tag(void)
653{
654 return item_cur->node.tag;
655}
656
657int item_count(void)
658{
659 int n = 0;
660 struct dialog_list *p;
661
662 for (p = item_head; p; p = p->next)
663 n++;
664 return n;
665}
666
667void item_set(int n)
668{
669 int i = 0;
670 item_foreach()
671 if (i++ == n)
672 return;
673}
674
675int item_n(void)
676{
677 int n = 0;
678 struct dialog_list *p;
679
680 for (p = item_head; p; p = p->next) {
681 if (p == item_cur)
682 return n;
683 n++;
684 }
685 return 0;
686}
687
688const char *item_str(void)
689{
690 return item_cur->node.str;
691}
692
693int item_is_selected(void)
694{
695 return (item_cur->node.selected != 0);
696}
697
698int item_is_tag(char tag)
699{
700 return (item_cur->node.tag == tag);
701}