1 /*
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 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22 #include "dialog.h"
23
24 struct dialog_info dlg;
25
set_mono_theme(void)26 static void set_mono_theme(void)
27 {
28 dlg.screen.atr = A_NORMAL;
29 dlg.shadow.atr = A_NORMAL;
30 dlg.dialog.atr = A_NORMAL;
31 dlg.title.atr = A_BOLD;
32 dlg.border.atr = A_NORMAL;
33 dlg.button_active.atr = A_REVERSE;
34 dlg.button_inactive.atr = A_DIM;
35 dlg.button_key_active.atr = A_REVERSE;
36 dlg.button_key_inactive.atr = A_BOLD;
37 dlg.button_label_active.atr = A_REVERSE;
38 dlg.button_label_inactive.atr = A_NORMAL;
39 dlg.inputbox.atr = A_NORMAL;
40 dlg.inputbox_border.atr = A_NORMAL;
41 dlg.searchbox.atr = A_NORMAL;
42 dlg.searchbox_title.atr = A_BOLD;
43 dlg.searchbox_border.atr = A_NORMAL;
44 dlg.position_indicator.atr = A_BOLD;
45 dlg.menubox.atr = A_NORMAL;
46 dlg.menubox_border.atr = A_NORMAL;
47 dlg.item.atr = A_NORMAL;
48 dlg.item_selected.atr = A_REVERSE;
49 dlg.tag.atr = A_BOLD;
50 dlg.tag_selected.atr = A_REVERSE;
51 dlg.tag_key.atr = A_BOLD;
52 dlg.tag_key_selected.atr = A_REVERSE;
53 dlg.check.atr = A_BOLD;
54 dlg.check_selected.atr = A_REVERSE;
55 dlg.uarrow.atr = A_BOLD;
56 dlg.darrow.atr = A_BOLD;
57 }
58
59 #define DLG_COLOR(dialog, f, b, h) \
60 do { \
61 dlg.dialog.fg = (f); \
62 dlg.dialog.bg = (b); \
63 dlg.dialog.hl = (h); \
64 } while (0)
65
set_classic_theme(void)66 static void set_classic_theme(void)
67 {
68 DLG_COLOR(screen, COLOR_CYAN, COLOR_BLUE, true);
69 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, true);
70 DLG_COLOR(dialog, COLOR_BLACK, COLOR_WHITE, false);
71 DLG_COLOR(title, COLOR_YELLOW, COLOR_WHITE, true);
72 DLG_COLOR(border, COLOR_WHITE, COLOR_WHITE, true);
73 DLG_COLOR(button_active, COLOR_WHITE, COLOR_BLUE, true);
74 DLG_COLOR(button_inactive, COLOR_BLACK, COLOR_WHITE, false);
75 DLG_COLOR(button_key_active, COLOR_WHITE, COLOR_BLUE, true);
76 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_WHITE, false);
77 DLG_COLOR(button_label_active, COLOR_YELLOW, COLOR_BLUE, true);
78 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_WHITE, true);
79 DLG_COLOR(inputbox, COLOR_BLACK, COLOR_WHITE, false);
80 DLG_COLOR(inputbox_border, COLOR_BLACK, COLOR_WHITE, false);
81 DLG_COLOR(searchbox, COLOR_BLACK, COLOR_WHITE, false);
82 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_WHITE, true);
83 DLG_COLOR(searchbox_border, COLOR_WHITE, COLOR_WHITE, true);
84 DLG_COLOR(position_indicator, COLOR_YELLOW, COLOR_WHITE, true);
85 DLG_COLOR(menubox, COLOR_BLACK, COLOR_WHITE, false);
86 DLG_COLOR(menubox_border, COLOR_WHITE, COLOR_WHITE, true);
87 DLG_COLOR(item, COLOR_BLACK, COLOR_WHITE, false);
88 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_BLUE, true);
89 DLG_COLOR(tag, COLOR_YELLOW, COLOR_WHITE, true);
90 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_BLUE, true);
91 DLG_COLOR(tag_key, COLOR_YELLOW, COLOR_WHITE, true);
92 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_BLUE, true);
93 DLG_COLOR(check, COLOR_BLACK, COLOR_WHITE, false);
94 DLG_COLOR(check_selected, COLOR_WHITE, COLOR_BLUE, true);
95 DLG_COLOR(uarrow, COLOR_GREEN, COLOR_WHITE, true);
96 DLG_COLOR(darrow, COLOR_GREEN, COLOR_WHITE, true);
97 }
98
set_blackbg_theme(void)99 static void set_blackbg_theme(void)
100 {
101 DLG_COLOR(screen, COLOR_RED, COLOR_BLACK, true);
102 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
103 DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
104 DLG_COLOR(title, COLOR_RED, COLOR_BLACK, false);
105 DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
106
107 DLG_COLOR(button_active, COLOR_YELLOW, COLOR_RED, false);
108 DLG_COLOR(button_inactive, COLOR_YELLOW, COLOR_BLACK, false);
109 DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_RED, true);
110 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_BLACK, false);
111 DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_RED, false);
112 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_BLACK, true);
113
114 DLG_COLOR(inputbox, COLOR_YELLOW, COLOR_BLACK, false);
115 DLG_COLOR(inputbox_border, COLOR_YELLOW, COLOR_BLACK, false);
116
117 DLG_COLOR(searchbox, COLOR_YELLOW, COLOR_BLACK, false);
118 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_BLACK, true);
119 DLG_COLOR(searchbox_border, COLOR_BLACK, COLOR_BLACK, true);
120
121 DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK, false);
122
123 DLG_COLOR(menubox, COLOR_YELLOW, COLOR_BLACK, false);
124 DLG_COLOR(menubox_border, COLOR_BLACK, COLOR_BLACK, true);
125
126 DLG_COLOR(item, COLOR_WHITE, COLOR_BLACK, false);
127 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_RED, false);
128
129 DLG_COLOR(tag, COLOR_RED, COLOR_BLACK, false);
130 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_RED, true);
131 DLG_COLOR(tag_key, COLOR_RED, COLOR_BLACK, false);
132 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED, true);
133
134 DLG_COLOR(check, COLOR_YELLOW, COLOR_BLACK, false);
135 DLG_COLOR(check_selected, COLOR_YELLOW, COLOR_RED, true);
136
137 DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
138 DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
139 }
140
set_bluetitle_theme(void)141 static void set_bluetitle_theme(void)
142 {
143 set_classic_theme();
144 DLG_COLOR(title, COLOR_BLUE, COLOR_WHITE, true);
145 DLG_COLOR(button_key_active, COLOR_YELLOW, COLOR_BLUE, true);
146 DLG_COLOR(button_label_active, COLOR_WHITE, COLOR_BLUE, true);
147 DLG_COLOR(searchbox_title, COLOR_BLUE, COLOR_WHITE, true);
148 DLG_COLOR(position_indicator, COLOR_BLUE, COLOR_WHITE, true);
149 DLG_COLOR(tag, COLOR_BLUE, COLOR_WHITE, true);
150 DLG_COLOR(tag_key, COLOR_BLUE, COLOR_WHITE, true);
151
152 }
153
154 /*
155 * Select color theme
156 */
set_theme(const char * theme)157 static int set_theme(const char *theme)
158 {
159 int use_color = 1;
160 if (!theme)
161 set_bluetitle_theme();
162 else if (strcmp(theme, "classic") == 0)
163 set_classic_theme();
164 else if (strcmp(theme, "bluetitle") == 0)
165 set_bluetitle_theme();
166 else if (strcmp(theme, "blackbg") == 0)
167 set_blackbg_theme();
168 else if (strcmp(theme, "mono") == 0)
169 use_color = 0;
170
171 return use_color;
172 }
173
init_one_color(struct dialog_color * color)174 static void init_one_color(struct dialog_color *color)
175 {
176 static int pair = 0;
177
178 pair++;
179 init_pair(pair, color->fg, color->bg);
180 if (color->hl)
181 color->atr = A_BOLD | COLOR_PAIR(pair);
182 else
183 color->atr = COLOR_PAIR(pair);
184 }
185
init_dialog_colors(void)186 static void init_dialog_colors(void)
187 {
188 init_one_color(&dlg.screen);
189 init_one_color(&dlg.shadow);
190 init_one_color(&dlg.dialog);
191 init_one_color(&dlg.title);
192 init_one_color(&dlg.border);
193 init_one_color(&dlg.button_active);
194 init_one_color(&dlg.button_inactive);
195 init_one_color(&dlg.button_key_active);
196 init_one_color(&dlg.button_key_inactive);
197 init_one_color(&dlg.button_label_active);
198 init_one_color(&dlg.button_label_inactive);
199 init_one_color(&dlg.inputbox);
200 init_one_color(&dlg.inputbox_border);
201 init_one_color(&dlg.searchbox);
202 init_one_color(&dlg.searchbox_title);
203 init_one_color(&dlg.searchbox_border);
204 init_one_color(&dlg.position_indicator);
205 init_one_color(&dlg.menubox);
206 init_one_color(&dlg.menubox_border);
207 init_one_color(&dlg.item);
208 init_one_color(&dlg.item_selected);
209 init_one_color(&dlg.tag);
210 init_one_color(&dlg.tag_selected);
211 init_one_color(&dlg.tag_key);
212 init_one_color(&dlg.tag_key_selected);
213 init_one_color(&dlg.check);
214 init_one_color(&dlg.check_selected);
215 init_one_color(&dlg.uarrow);
216 init_one_color(&dlg.darrow);
217 }
218
219 /*
220 * Setup for color display
221 */
color_setup(const char * theme)222 static void color_setup(const char *theme)
223 {
224 if (set_theme(theme)) {
225 if (has_colors()) { /* Terminal supports color? */
226 start_color();
227 init_dialog_colors();
228 }
229 }
230 else
231 {
232 set_mono_theme();
233 }
234 }
235
236 /*
237 * Set window to attribute 'attr'
238 */
attr_clear(WINDOW * win,int height,int width,chtype attr)239 void attr_clear(WINDOW * win, int height, int width, chtype attr)
240 {
241 int i, j;
242
243 wattrset(win, attr);
244 for (i = 0; i < height; i++) {
245 wmove(win, i, 0);
246 for (j = 0; j < width; j++)
247 waddch(win, ' ');
248 }
249 touchwin(win);
250 }
251
dialog_clear(void)252 void dialog_clear(void)
253 {
254 attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
255 /* Display background title if it exists ... - SLH */
256 if (dlg.backtitle != NULL) {
257 int i;
258
259 wattrset(stdscr, dlg.screen.atr);
260 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
261 wmove(stdscr, 1, 1);
262 for (i = 1; i < COLS - 1; i++)
263 waddch(stdscr, ACS_HLINE);
264 }
265 wnoutrefresh(stdscr);
266 }
267
268 /*
269 * Do some initialization for dialog
270 */
init_dialog(const char * backtitle)271 void init_dialog(const char *backtitle)
272 {
273 dlg.backtitle = backtitle;
274 color_setup(getenv("MENUCONFIG_COLOR"));
275 }
276
reset_dialog(void)277 void reset_dialog(void)
278 {
279 initscr(); /* Init curses */
280 keypad(stdscr, TRUE);
281 cbreak();
282 noecho();
283 dialog_clear();
284 }
285
286 /*
287 * End using dialog functions.
288 */
end_dialog(void)289 void end_dialog(void)
290 {
291 endwin();
292 }
293
294 /* Print the title of the dialog. Center the title and truncate
295 * tile if wider than dialog (- 2 chars).
296 **/
print_title(WINDOW * dialog,const char * title,int width)297 void print_title(WINDOW *dialog, const char *title, int width)
298 {
299 if (title) {
300 int tlen = MIN(width - 2, strlen(title));
301 wattrset(dialog, dlg.title.atr);
302 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
303 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
304 waddch(dialog, ' ');
305 }
306 }
307
308 /*
309 * Print a string of text in a window, automatically wrap around to the
310 * next line if the string is too long to fit on one line. Newline
311 * characters '\n' are replaced by spaces. We start on a new line
312 * if there is no room for at least 4 nonblanks following a double-space.
313 */
print_autowrap(WINDOW * win,const char * prompt,int width,int y,int x)314 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
315 {
316 int newl, cur_x, cur_y;
317 int i, prompt_len, room, wlen;
318 char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
319
320 strcpy(tempstr, prompt);
321
322 prompt_len = strlen(tempstr);
323
324 /*
325 * Remove newlines
326 */
327 for (i = 0; i < prompt_len; i++) {
328 if (tempstr[i] == '\n')
329 tempstr[i] = ' ';
330 }
331
332 if (prompt_len <= width - x * 2) { /* If prompt is short */
333 wmove(win, y, (width - prompt_len) / 2);
334 waddstr(win, tempstr);
335 } else {
336 cur_x = x;
337 cur_y = y;
338 newl = 1;
339 word = tempstr;
340 while (word && *word) {
341 sp = index(word, ' ');
342 if (sp)
343 *sp++ = 0;
344
345 /* Wrap to next line if either the word does not fit,
346 or it is the first word of a new sentence, and it is
347 short, and the next word does not fit. */
348 room = width - cur_x;
349 wlen = strlen(word);
350 if (wlen > room ||
351 (newl && wlen < 4 && sp
352 && wlen + 1 + strlen(sp) > room
353 && (!(sp2 = index(sp, ' '))
354 || wlen + 1 + (sp2 - sp) > room))) {
355 cur_y++;
356 cur_x = x;
357 }
358 wmove(win, cur_y, cur_x);
359 waddstr(win, word);
360 getyx(win, cur_y, cur_x);
361 cur_x++;
362 if (sp && *sp == ' ') {
363 cur_x++; /* double space */
364 while (*++sp == ' ') ;
365 newl = 1;
366 } else
367 newl = 0;
368 word = sp;
369 }
370 }
371 }
372
373 /*
374 * Print a button
375 */
print_button(WINDOW * win,const char * label,int y,int x,int selected)376 void print_button(WINDOW * win, const char *label, int y, int x, int selected)
377 {
378 int i, temp;
379
380 wmove(win, y, x);
381 wattrset(win, selected ? dlg.button_active.atr
382 : dlg.button_inactive.atr);
383 waddstr(win, "<");
384 temp = strspn(label, " ");
385 label += temp;
386 wattrset(win, selected ? dlg.button_label_active.atr
387 : dlg.button_label_inactive.atr);
388 for (i = 0; i < temp; i++)
389 waddch(win, ' ');
390 wattrset(win, selected ? dlg.button_key_active.atr
391 : dlg.button_key_inactive.atr);
392 waddch(win, label[0]);
393 wattrset(win, selected ? dlg.button_label_active.atr
394 : dlg.button_label_inactive.atr);
395 waddstr(win, (char *)label + 1);
396 wattrset(win, selected ? dlg.button_active.atr
397 : dlg.button_inactive.atr);
398 waddstr(win, ">");
399 wmove(win, y, x + temp + 1);
400 }
401
402 /*
403 * Draw a rectangular box with line drawing characters
404 */
405 void
draw_box(WINDOW * win,int y,int x,int height,int width,chtype box,chtype border)406 draw_box(WINDOW * win, int y, int x, int height, int width,
407 chtype box, chtype border)
408 {
409 int i, j;
410
411 wattrset(win, 0);
412 for (i = 0; i < height; i++) {
413 wmove(win, y + i, x);
414 for (j = 0; j < width; j++)
415 if (!i && !j)
416 waddch(win, border | ACS_ULCORNER);
417 else if (i == height - 1 && !j)
418 waddch(win, border | ACS_LLCORNER);
419 else if (!i && j == width - 1)
420 waddch(win, box | ACS_URCORNER);
421 else if (i == height - 1 && j == width - 1)
422 waddch(win, box | ACS_LRCORNER);
423 else if (!i)
424 waddch(win, border | ACS_HLINE);
425 else if (i == height - 1)
426 waddch(win, box | ACS_HLINE);
427 else if (!j)
428 waddch(win, border | ACS_VLINE);
429 else if (j == width - 1)
430 waddch(win, box | ACS_VLINE);
431 else
432 waddch(win, box | ' ');
433 }
434 }
435
436 /*
437 * Draw shadows along the right and bottom edge to give a more 3D look
438 * to the boxes
439 */
draw_shadow(WINDOW * win,int y,int x,int height,int width)440 void draw_shadow(WINDOW * win, int y, int x, int height, int width)
441 {
442 int i;
443
444 if (has_colors()) { /* Whether terminal supports color? */
445 wattrset(win, dlg.shadow.atr);
446 wmove(win, y + height, x + 2);
447 for (i = 0; i < width; i++)
448 waddch(win, winch(win) & A_CHARTEXT);
449 for (i = y + 1; i < y + height + 1; i++) {
450 wmove(win, i, x + width);
451 waddch(win, winch(win) & A_CHARTEXT);
452 waddch(win, winch(win) & A_CHARTEXT);
453 }
454 wnoutrefresh(win);
455 }
456 }
457
458 /*
459 * Return the position of the first alphabetic character in a string.
460 */
first_alpha(const char * string,const char * exempt)461 int first_alpha(const char *string, const char *exempt)
462 {
463 int i, in_paren = 0, c;
464
465 for (i = 0; i < strlen(string); i++) {
466 c = tolower(string[i]);
467
468 if (strchr("<[(", c))
469 ++in_paren;
470 if (strchr(">])", c) && in_paren > 0)
471 --in_paren;
472
473 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
474 return i;
475 }
476
477 return 0;
478 }
479
480 /*
481 * ncurses uses ESC to detect escaped char sequences. This resutl in
482 * a small timeout before ESC is actually delivered to the application.
483 * lxdialog suggest <ESC> <ESC> which is correctly translated to two
484 * times esc. But then we need to ignore the second esc to avoid stepping
485 * out one menu too much. Filter away all escaped key sequences since
486 * keypad(FALSE) turn off ncurses support for escape sequences - and thats
487 * needed to make notimeout() do as expected.
488 */
on_key_esc(WINDOW * win)489 int on_key_esc(WINDOW *win)
490 {
491 int key;
492 int key2;
493 int key3;
494
495 nodelay(win, TRUE);
496 keypad(win, FALSE);
497 key = wgetch(win);
498 key2 = wgetch(win);
499 do {
500 key3 = wgetch(win);
501 } while (key3 != ERR);
502 nodelay(win, FALSE);
503 keypad(win, TRUE);
504 if (key == KEY_ESC && key2 == ERR)
505 return KEY_ESC;
506 else if (key != ERR && key != KEY_ESC && key2 == ERR)
507 ungetch(key);
508
509 return -1;
510 }
511
512 /* redraw screen in new size */
on_key_resize(void)513 int on_key_resize(void)
514 {
515 dialog_clear();
516 return KEY_RESIZE;
517 }
518
519 struct dialog_list *item_cur;
520 struct dialog_list item_nil;
521 struct dialog_list *item_head;
522
item_reset(void)523 void item_reset(void)
524 {
525 struct dialog_list *p, *next;
526
527 for (p = item_head; p; p = next) {
528 next = p->next;
529 free(p);
530 }
531 item_head = NULL;
532 item_cur = &item_nil;
533 }
534
item_make(const char * fmt,...)535 void item_make(const char *fmt, ...)
536 {
537 va_list ap;
538 struct dialog_list *p = malloc(sizeof(*p));
539
540 if (item_head)
541 item_cur->next = p;
542 else
543 item_head = p;
544 item_cur = p;
545 memset(p, 0, sizeof(*p));
546
547 va_start(ap, fmt);
548 vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
549 va_end(ap);
550 }
551
item_add_str(const char * fmt,...)552 void item_add_str(const char *fmt, ...)
553 {
554 va_list ap;
555 size_t avail;
556
557 avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
558
559 va_start(ap, fmt);
560 vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
561 avail, fmt, ap);
562 item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
563 va_end(ap);
564 }
565
item_set_tag(char tag)566 void item_set_tag(char tag)
567 {
568 item_cur->node.tag = tag;
569 }
item_set_data(void * ptr)570 void item_set_data(void *ptr)
571 {
572 item_cur->node.data = ptr;
573 }
574
item_set_selected(int val)575 void item_set_selected(int val)
576 {
577 item_cur->node.selected = val;
578 }
579
item_activate_selected(void)580 int item_activate_selected(void)
581 {
582 item_foreach()
583 if (item_is_selected())
584 return 1;
585 return 0;
586 }
587
item_data(void)588 void *item_data(void)
589 {
590 return item_cur->node.data;
591 }
592
item_tag(void)593 char item_tag(void)
594 {
595 return item_cur->node.tag;
596 }
597
item_count(void)598 int item_count(void)
599 {
600 int n = 0;
601 struct dialog_list *p;
602
603 for (p = item_head; p; p = p->next)
604 n++;
605 return n;
606 }
607
item_set(int n)608 void item_set(int n)
609 {
610 int i = 0;
611 item_foreach()
612 if (i++ == n)
613 return;
614 }
615
item_n(void)616 int item_n(void)
617 {
618 int n = 0;
619 struct dialog_list *p;
620
621 for (p = item_head; p; p = p->next) {
622 if (p == item_cur)
623 return n;
624 n++;
625 }
626 return 0;
627 }
628
item_str(void)629 const char *item_str(void)
630 {
631 return item_cur->node.str;
632 }
633
item_is_selected(void)634 int item_is_selected(void)
635 {
636 return (item_cur->node.selected != 0);
637 }
638
item_is_tag(char tag)639 int item_is_tag(char tag)
640 {
641 return (item_cur->node.tag == tag);
642 }
643