2 * dialog - Display simple dialog boxes from shell scripts
4 * AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * 17/12/93 - Version 0.1 released.
25 * 19/12/93 - menu will now scroll if there are more items than can fit
27 * - added 'checklist', a dialog box with a list of options that
28 * can be turned on or off. A list of options that are on is
31 * 20/12/93 - Version 0.15 released.
33 * 29/12/93 - Incorporated patch from Patrick J. Volkerding
34 * (volkerdi@mhd1.moorhead.msus.edu) that made these changes:
35 * - increased MAX_LEN to 2048
36 * - added 'infobox', equivalent to a message box without pausing
37 * - added option '--clear' that will clear the screen
38 * - Explicit line breaking when printing prompt text can be
39 * invoked by real newline '\n' besides the string "\n"
40 * - an optional parameter '--title <string>' can be used to
41 * specify a title string for the dialog box
43 * 03/01/94 - added 'textbox', a dialog box for displaying text from a file.
44 * - Version 0.2 released.
46 * 04/01/94 - some fixes and improvements for 'textbox':
47 * - fixed a bug that will cause a segmentation violation when a
48 * line is longer than MAX_LEN characters. Lines will now be
49 * truncated if they are longer than MAX_LEN characters.
50 * - removed wrefresh() from print_line(). This will increase
51 * efficiency of print_page() which calls print_line().
52 * - display current position in the form of percentage into file.
53 * - Version 0.21 released.
55 * 05/01/94 - some changes for faster screen update.
57 * 07/01/94 - much more flexible color settings. Can use all 16 colors
58 * (8 normal, 8 highlight) of the Linux console.
60 * 08/01/94 - added run-time configuration using configuration file.
62 * 09/01/94 - some minor bug fixes and cleanups for menubox, checklist and
65 * 11/01/94 - added a man page.
67 * 13/01/94 - some changes for easier porting to other Unix systems (tested
68 * on Ultrix, SunOS and HPUX)
69 * - Version 0.3 released.
71 * 08/06/94 - Patches by Stuart Herbert - S.Herbert@shef.ac.uk
72 * Fixed attr_clear and the textbox stuff to work with ncurses 1.8.5
73 * Fixed the wordwrap routine - it'll actually wrap properly now
74 * Added a more 3D look to everything - having your own rc file could
75 * prove 'interesting' to say the least :-)
76 * Added radiolist option
77 * - Version 0.4 released.
80 #include <sys/cdefs.h>
81 __FBSDID("$FreeBSD$");
83 #define __DIALOG_MAIN__
87 #include "dialog.priv.h"
92 /* These are two "secret" globals that can be fiddled to make a dialog
93 * come up someplace other than a "centered" calculation for X,Y
97 /* This "secret" global allows you to change the behavior of an input field */
101 * Do some initialization for dialog
103 void init_dialog(void)
107 errx(1, "libdialog is unsafe to use in setugid applications");
111 (void) setlocale(LC_ALL, "");
115 if (parse_rc() == -1) /* Read the configuration file */
119 if (initscr() == NULL) { /* Init curses */
120 fprintf(stderr, "\nCurses initialization error.\n");
123 keypad(stdscr, TRUE);
128 if (use_colors || use_shadow) /* Set up colors */
132 /* Set screen to screen attribute */
133 dialog_clear_norefresh();
134 DialogX = DialogY = 0;
136 /* End of init_dialog() */
141 * Setup for color display
143 void color_setup(void)
147 if (has_colors()) { /* Terminal supports color? */
150 /* Initialize color pairs */
151 for (i = 0; i < ATTRIBUTE_COUNT; i++)
152 init_pair(i+1, color_table[i][0], color_table[i][1]);
154 /* Setup color attributes */
155 for (i = 0; i < ATTRIBUTE_COUNT; i++)
156 attributes[i] = C_ATTR(color_table[i][2], i+1);
159 /* End of color_setup() */
164 * Set window to attribute 'attr'
166 void attr_clear(WINDOW *win, int height, int width, chtype attr)
170 wattrset(win, attr); /* Set window to attribute 'attr' */
171 for (i = 0; i < height; i++) {
173 for (j = 0; j < width; j++)
177 /* End of attr_clear() */
181 * Print a string of text in a window, automatically wrap around to the
182 * next line if the string is too long to fit on one line. Note that the
183 * string may contain "\n" to represent a newline character or the real
184 * newline '\n', but in that case, auto wrap around will be disabled.
186 void print_autowrap(WINDOW *win, unsigned char *prompt, int height, int width, int maxwidth, int y, int x, int center, int rawmode)
189 unsigned char tempstr[MAX_LEN+1], *word, *tempptr, *tempptr1;
190 chtype ostuff[132], attrs = 0, init_bottom = 0;
192 wsetscrreg(win, y, height);
193 getyx(win, cur_y, cur_x);
195 strncpy(tempstr, prompt, MAX_LEN);
196 tempstr[MAX_LEN] = '\0';
197 if ((!rawmode && strstr(tempstr, "\\n") != NULL) ||
198 (strchr(tempstr, '\n') != NULL)) { /* Prompt contains "\n" or '\n' */
201 tempptr = rawmode ? NULL : strstr(word, "\\n");
202 tempptr1 = strchr(word, '\n');
203 if (tempptr == NULL && tempptr1 == NULL)
205 else if (tempptr == NULL) { /* No more "\n" */
209 else if (tempptr1 == NULL) { /* No more '\n' */
213 else { /* Prompt contains both "\n" and '\n' */
214 if (strlen(tempptr)-2 < strlen(tempptr1)-1) {
226 if (++cur_y > height) {
229 for (i = 0; i < x; i++)
230 ostuff[i] = mvwinch(win, cur_y, i);
231 for (i = width; i < maxwidth; i++)
232 ostuff[i] = mvwinch(win, cur_y, i);
233 attrs = getattrs(win);
238 scrollok(win, FALSE);
239 wmove(win, cur_y, 0);
240 for (i = 0; i < x; i++) {
241 wattrset(win, ostuff[i]&A_ATTRIBUTES);
242 waddch(win, ostuff[i]);
244 wattrset(win, attrs);
245 for ( ; i < width; i++)
247 for ( ; i < maxwidth; i++) {
248 wattrset(win, ostuff[i]&A_ATTRIBUTES);
249 waddch(win, ostuff[i]);
251 wattrset(win, attrs);
254 wmove(win, cur_y, cur_x = x);
258 else if (center && strlen(tempstr) <= width-x*2) { /* If prompt is short */
259 wmove(win, cur_y, (width - strlen(tempstr)) / 2);
260 waddstr(win, tempstr);
262 else if (!center && strlen(tempstr) <= width-cur_x) { /* If prompt is short */
263 waddstr(win, tempstr);
268 /* Print prompt word by word, wrap around if necessary */
269 while ((word = strsep(&p, "\t\n ")) != NULL) {
277 if (cur_x+strlen(word) >= width+1) { /* wrap around to next line */
278 if (x+strlen(word) >= width+1) {
279 sc = word[width-cur_x-1];
280 word[width-cur_x-1] = '\0';
281 wmove(win, cur_y, cur_x);
283 word[width-cur_x-1] = sc;
284 word += width-cur_x-1;
285 getyx(win, cur_y, cur_x);
290 if (cur_y > height) {
293 for (i = 0; i < x; i++)
294 ostuff[i] = mvwinch(win, cur_y, i);
295 for (i = width; i < maxwidth; i++)
296 ostuff[i] = mvwinch(win, cur_y, i);
297 attrs = getattrs(win);
302 scrollok(win, FALSE);
303 wmove(win, cur_y, 0);
304 for (i = 0; i < x; i++) {
305 wattrset(win, ostuff[i]&A_ATTRIBUTES);
306 waddch(win, ostuff[i]);
308 wattrset(win, attrs);
309 for ( ; i < width; i++)
311 for ( ; i < maxwidth; i++) {
312 wattrset(win, ostuff[i]&A_ATTRIBUTES);
313 waddch(win, ostuff[i]);
315 wattrset(win, attrs);
321 wmove(win, cur_y, cur_x);
323 getyx(win, cur_y, cur_x);
328 /* End of print_autowrap() */
334 void print_button(WINDOW *win, unsigned char *label, int y, int x, int selected)
339 wattrset(win, selected ? button_active_attr : button_inactive_attr);
340 waddstr(win, selected ? "[" : " ");
341 temp = strspn(label, " ");
343 for (i = 0; i < temp; i++)
345 wattrset(win, selected ? button_key_active_attr : button_key_inactive_attr);
346 waddch(win, label[0]);
347 wattrset(win, selected ? button_active_attr : button_inactive_attr);
348 waddstr(win, label+1);
349 waddstr(win, selected ? "]" : " ");
350 wmove(win, y, x+temp+1);
352 /* End of print_button() */
356 * Draw a rectangular box with line drawing characters
358 void draw_box(WINDOW *win, int y, int x, int height, int width, chtype box, chtype border)
363 for (i = 0; i < height; i++) {
364 wmove(win, y + i, x);
365 for (j = 0; j < width; j++)
367 waddch(win, border | ACS_ULCORNER);
368 else if (i == height-1 && !j)
369 waddch(win, border | ACS_LLCORNER);
370 else if (!i && j == width-1)
371 waddch(win, box | ACS_URCORNER);
372 else if (i == height-1 && j == width-1)
373 waddch(win, box | ACS_LRCORNER);
375 waddch(win, border | ACS_HLINE);
376 else if (i == height-1)
377 waddch(win, box | ACS_HLINE);
379 waddch(win, border | ACS_VLINE);
380 else if (j == width-1)
381 waddch(win, box | ACS_VLINE);
383 waddch(win, box | ' ');
386 /* End of draw_box() */
391 * Draw shadows along the right and bottom edge to give a more 3D look
394 void draw_shadow(WINDOW *win, int y, int x, int height, int width)
399 if (has_colors()) { /* Whether terminal supports color? */
401 attrs = getattrs(win);
402 if (y+height < getmaxy(win)) {
404 wattrset(win, A_INVIS);
405 wmove(win, y + height, x + 2);
406 for (i = 0; i < width; i++)
407 if (i+x+2 < getmaxx(win))
410 wattrset(win, shadow_attr);
411 wmove(win, y + height, x + 2);
412 for (i = 0; i < width; i++)
413 if (i+x+2 < getmaxx(win))
414 waddch(win, mvwinch(newscr, sy+y+height, sx+x+2+i) & A_CHARTEXT);
416 if (x+width < getmaxx(win)) {
417 for (i = y + 1; i < y + height + 1; i++) {
418 if (i < getmaxy(win)) {
420 wattrset(win, A_INVIS);
421 wmove(win, i, x + width);
423 if (x+width+1 < getmaxx(win))
426 wattrset(win, shadow_attr);
427 wmove(win, i, x + width);
428 waddch(win, mvwinch(newscr, sy+i, sx+x+width) & A_CHARTEXT);
429 if (x+width+1 < getmaxx(win))
430 waddch(win, mvwinch(newscr, sy+i, sx+x+width+1) & A_CHARTEXT);
434 wattrset(win, attrs);
438 /* End of draw_shadow() */
441 void dialog_clear_norefresh(void)
443 attr_clear(stdscr, LINES, COLS, screen_attr);
445 wnoutrefresh(stdscr);
448 void dialog_clear(void)
450 dialog_clear_norefresh();
454 void dialog_update(void)
459 void end_dialog(void)
464 int strwidth(const char *p)
466 int i = 0, len, incr;
467 const char *start, *s, *s1, *s2;
469 for (start = s = p; ; start = (s += incr)) {
470 s1 = strchr(s, '\n');
471 s2 = strstr(s, "\\n");
480 incr = 1 + (s == s2);
491 int strheight(const char *p)
494 const char *s, *s1, *s2;
496 for (s = p; ; s += incr) {
497 s1 = strchr(s, '\n');
498 s2 = strstr(s, "\\n");
507 incr = 1 + (s == s2);
513 void print_arrows(WINDOW *dialog, int scroll, int menu_height, int item_no,
514 int box_x, int box_y, int tag_x, int cur_x, int cur_y)
516 wmove(dialog, box_y, box_x + tag_x + 1);
517 wattrset(dialog, scroll ? uarrow_attr : menubox_attr);
518 waddch(dialog, scroll ? ACS_UARROW : ACS_HLINE);
519 wmove(dialog, box_y, box_x + tag_x + 2);
520 waddch(dialog, scroll ? '(' : ACS_HLINE);
521 wmove(dialog, box_y, box_x + tag_x + 3);
522 waddch(dialog, scroll ? '-' : ACS_HLINE);
523 wmove(dialog, box_y, box_x + tag_x + 4);
524 waddch(dialog, scroll ? ')' : ACS_HLINE);
525 wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 1);
526 wattrset(dialog, scroll+menu_height < item_no ? darrow_attr : menubox_border_attr);
527 waddch(dialog, scroll+menu_height < item_no ? ACS_DARROW : ACS_HLINE);
528 wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 2);
529 waddch(dialog, scroll+menu_height < item_no ? '(' : ACS_HLINE);
530 wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 3);
531 waddch(dialog, scroll+menu_height < item_no ? '+' : ACS_HLINE);
532 wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 4);
533 waddch(dialog, scroll+menu_height < item_no ? ')' : ACS_HLINE);
534 wmove(dialog, cur_y, cur_x); /* Restore cursor position */