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
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
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
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
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 */
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
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
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 */
222 static void color_setup(const char *theme)
223 {
224 int use_color;
225
226 use_color = set_theme(theme);
227 if (use_color && has_colors()) {
228 start_color();
229 init_dialog_colors();
230 } else
231 set_mono_theme();
232 }
233
234 /*
235 * Set window to attribute 'attr'
236 */
237 void attr_clear(WINDOW * win, int height, int width, chtype attr)
238 {
239 int i, j;
240
241 wattrset(win, attr);
242 for (i = 0; i < height; i++) {
243 wmove(win, i, 0);
244 for (j = 0; j < width; j++)
245 waddch(win, ' ');
246 }
247 touchwin(win);
248 }
249
250 void dialog_clear(void)
251 {
252 attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
253 /* Display background title if it exists ... - SLH */
254 if (dlg.backtitle != NULL) {
255 int i;
256
257 wattrset(stdscr, dlg.screen.atr);
258 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
259 wmove(stdscr, 1, 1);
260 for (i = 1; i < COLS - 1; i++)
261 waddch(stdscr, ACS_HLINE);
262 }
263 wnoutrefresh(stdscr);
264 }
265
266 /*
267 * Do some initialization for dialog
268 */
269 int init_dialog(const char *backtitle)
270 {
271 int height, width;
272
273 initscr(); /* Init curses */
274 getmaxyx(stdscr, height, width);
275 if (height < 19 || width < 80) {
276 endwin();
277 return -ERRDISPLAYTOOSMALL;
278 }
279
280 dlg.backtitle = backtitle;
281 color_setup(getenv("MENUCONFIG_COLOR"));
282
283 keypad(stdscr, TRUE);
284 cbreak();
285 noecho();
286 dialog_clear();
287
288 return 0;
289 }
290
291 void set_dialog_backtitle(const char *backtitle)
292 {
293 dlg.backtitle = backtitle;
294 }
295
296 /*
297 * End using dialog functions.
298 */
299 void end_dialog(int x, int y)
300 {
301 /* move cursor back to original position */
302 move(y, x);
303 refresh();
304 endwin();
305 }
306
307 /* Print the title of the dialog. Center the title and truncate
308 * tile if wider than dialog (- 2 chars).
309 **/
310 void print_title(WINDOW *dialog, const char *title, int width)
311 {
312 if (title) {
313 int tlen = MIN(width - 2, strlen(title));
314 wattrset(dialog, dlg.title.atr);
315 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
316 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
317 waddch(dialog, ' ');
318 }
319 }
320
321 /*
322 * Print a string of text in a window, automatically wrap around to the
323 * next line if the string is too long to fit on one line. Newline
324 * characters '\n' are replaced by spaces. We start on a new line
325 * if there is no room for at least 4 nonblanks following a double-space.
326 */
327 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
328 {
329 int newl, cur_x, cur_y;
330 int i, prompt_len, room, wlen;
331 char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
332
333 strcpy(tempstr, prompt);
334
335 prompt_len = strlen(tempstr);
336
337 /*
338 * Remove newlines
339 */
340 for (i = 0; i < prompt_len; i++) {
341 if (tempstr[i] == '\n')
342 tempstr[i] = ' ';
343 }
344
345 if (prompt_len <= width - x * 2) { /* If prompt is short */
346 wmove(win, y, (width - prompt_len) / 2);
347 waddstr(win, tempstr);
348 } else {
349 cur_x = x;
350 cur_y = y;
351 newl = 1;
352 word = tempstr;
353 while (word && *word) {
354 sp = strchr(word, ' ');
355 if (sp)
356 *sp++ = 0;
357
358 /* Wrap to next line if either the word does not fit,
359 or it is the first word of a new sentence, and it is
360 short, and the next word does not fit. */
361 room = width - cur_x;
362 wlen = strlen(word);
363 if (wlen > room ||
364 (newl && wlen < 4 && sp
365 && wlen + 1 + strlen(sp) > room
366 && (!(sp2 = strchr(sp, ' '))
367 || wlen + 1 + (sp2 - sp) > room))) {
368 cur_y++;
369 cur_x = x;
370 }
371 wmove(win, cur_y, cur_x);
372 waddstr(win, word);
373 getyx(win, cur_y, cur_x);
374 cur_x++;
375 if (sp && *sp == ' ') {
376 cur_x++; /* double space */
377 while (*++sp == ' ') ;
378 newl = 1;
379 } else
380 newl = 0;
381 word = sp;
382 }
383 }
384 }
385
386 /*
387 * Print a button
388 */
389 void print_button(WINDOW * win, const char *label, int y, int x, int selected)
390 {
391 int i, temp;
392
393 wmove(win, y, x);
394 wattrset(win, selected ? dlg.button_active.atr
395 : dlg.button_inactive.atr);
396 waddstr(win, "<");
397 temp = strspn(label, " ");
398 label += temp;
399 wattrset(win, selected ? dlg.button_label_active.atr
400 : dlg.button_label_inactive.atr);
401 for (i = 0; i < temp; i++)
402 waddch(win, ' ');
403 wattrset(win, selected ? dlg.button_key_active.atr
404 : dlg.button_key_inactive.atr);
405 waddch(win, label[0]);
406 wattrset(win, selected ? dlg.button_label_active.atr
407 : dlg.button_label_inactive.atr);
408 waddstr(win, (char *)label + 1);
409 wattrset(win, selected ? dlg.button_active.atr
410 : dlg.button_inactive.atr);
411 waddstr(win, ">");
412 wmove(win, y, x + temp + 1);
413 }
414
415 /*
416 * Draw a rectangular box with line drawing characters
417 */
418 void
419 draw_box(WINDOW * win, int y, int x, int height, int width,
420 chtype box, chtype border)
421 {
422 int i, j;
423
424 wattrset(win, 0);
425 for (i = 0; i < height; i++) {
426 wmove(win, y + i, x);
427 for (j = 0; j < width; j++)
428 if (!i && !j)
429 waddch(win, border | ACS_ULCORNER);
430 else if (i == height - 1 && !j)
431 waddch(win, border | ACS_LLCORNER);
432 else if (!i && j == width - 1)
433 waddch(win, box | ACS_URCORNER);
434 else if (i == height - 1 && j == width - 1)
435 waddch(win, box | ACS_LRCORNER);
436 else if (!i)
437 waddch(win, border | ACS_HLINE);
438 else if (i == height - 1)
439 waddch(win, box | ACS_HLINE);
440 else if (!j)
441 waddch(win, border | ACS_VLINE);
442 else if (j == width - 1)
443 waddch(win, box | ACS_VLINE);
444 else
445 waddch(win, box | ' ');
446 }
447 }
448
449 /*
450 * Draw shadows along the right and bottom edge to give a more 3D look
451 * to the boxes
452 */
453 void draw_shadow(WINDOW * win, int y, int x, int height, int width)
454 {
455 int i;
456
457 if (has_colors()) { /* Whether terminal supports color? */
458 wattrset(win, dlg.shadow.atr);
459 wmove(win, y + height, x + 2);
460 for (i = 0; i < width; i++)
461 waddch(win, winch(win) & A_CHARTEXT);
462 for (i = y + 1; i < y + height + 1; i++) {
463 wmove(win, i, x + width);
464 waddch(win, winch(win) & A_CHARTEXT);
465 waddch(win, winch(win) & A_CHARTEXT);
466 }
467 wnoutrefresh(win);
468 }
469 }
470
471 /*
472 * Return the position of the first alphabetic character in a string.
473 */
474 int first_alpha(const char *string, const char *exempt)
475 {
476 int i, in_paren = 0, c;
477
478 for (i = 0; i < strlen(string); i++) {
479 c = tolower(string[i]);
480
481 if (strchr("<[(", c))
482 ++in_paren;
483 if (strchr(">])", c) && in_paren > 0)
484 --in_paren;
485
486 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
487 return i;
488 }
489
490 return 0;
491 }
492
493 /*
494 * ncurses uses ESC to detect escaped char sequences. This resutl in
495 * a small timeout before ESC is actually delivered to the application.
496 * lxdialog suggest <ESC> <ESC> which is correctly translated to two
497 * times esc. But then we need to ignore the second esc to avoid stepping
498 * out one menu too much. Filter away all escaped key sequences since
499 * keypad(FALSE) turn off ncurses support for escape sequences - and thats
500 * needed to make notimeout() do as expected.
501 */
502 int on_key_esc(WINDOW *win)
503 {
504 int key;
505 int key2;
506 int key3;
507
508 nodelay(win, TRUE);
509 keypad(win, FALSE);
510 key = wgetch(win);
511 key2 = wgetch(win);
512 do {
513 key3 = wgetch(win);
514 } while (key3 != ERR);
515 nodelay(win, FALSE);
516 keypad(win, TRUE);
517 if (key == KEY_ESC && key2 == ERR)
518 return KEY_ESC;
519 else if (key != ERR && key != KEY_ESC && key2 == ERR)
520 ungetch(key);
521
522 return -1;
523 }
524
525 /* redraw screen in new size */
526 int on_key_resize(void)
527 {
528 dialog_clear();
529 return KEY_RESIZE;
530 }
531
532 struct dialog_list *item_cur;
533 struct dialog_list item_nil;
534 struct dialog_list *item_head;
535
536 void item_reset(void)
537 {
538 struct dialog_list *p, *next;
539
540 for (p = item_head; p; p = next) {
541 next = p->next;
542 free(p);
543 }
544 item_head = NULL;
545 item_cur = &item_nil;
546 }
547
548 void item_make(const char *fmt, ...)
549 {
550 va_list ap;
551 struct dialog_list *p = malloc(sizeof(*p));
552
553 if (item_head)
554 item_cur->next = p;
555 else
556 item_head = p;
557 item_cur = p;
558 memset(p, 0, sizeof(*p));
559
560 va_start(ap, fmt);
561 vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
562 va_end(ap);
563 }
564
565 void item_add_str(const char *fmt, ...)
566 {
567 va_list ap;
568 size_t avail;
569
570 avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
571
572 va_start(ap, fmt);
573 vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
574 avail, fmt, ap);
575 item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
576 va_end(ap);
577 }
578
579 void item_set_tag(char tag)
580 {
581 item_cur->node.tag = tag;
582 }
583 void item_set_data(void *ptr)
584 {
585 item_cur->node.data = ptr;
586 }
587
588 void item_set_selected(int val)
589 {
590 item_cur->node.selected = val;
591 }
592
593 int item_activate_selected(void)
594 {
595 item_foreach()
596 if (item_is_selected())
597 return 1;
598 return 0;
599 }
600
601 void *item_data(void)
602 {
603 return item_cur->node.data;
604 }
605
606 char item_tag(void)
607 {
608 return item_cur->node.tag;
609 }
610
611 int item_count(void)
612 {
613 int n = 0;
614 struct dialog_list *p;
615
616 for (p = item_head; p; p = p->next)
617 n++;
618 return n;
619 }
620
621 void item_set(int n)
622 {
623 int i = 0;
624 item_foreach()
625 if (i++ == n)
626 return;
627 }
628
629 int item_n(void)
630 {
631 int n = 0;
632 struct dialog_list *p;
633
634 for (p = item_head; p; p = p->next) {
635 if (p == item_cur)
636 return n;
637 n++;
638 }
639 return 0;
640 }
641
642 const char *item_str(void)
643 {
644 return item_cur->node.str;
645 }
646
647 int item_is_selected(void)
648 {
649 return (item_cur->node.selected != 0);
650 }
651
652 int item_is_tag(char tag)
653 {
654 return (item_cur->node.tag == tag);
655 }
656
|
This page was automatically generated by the
LXR engine.
|