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29 * $Id: demo_menus.c,v 1.27 2008/08/04 15:37:52 tom Exp $
31 * Demonstrate a variety of functions from the menu library.
32 * Thomas Dickey - 2005/4/9
50 menu_request_by_name -
73 #include <test.priv.h>
79 #include <sys/types.h>
82 #ifdef NCURSES_VERSION
84 static unsigned save_trace = TRACE_ORDINARY | TRACE_CALLS;
85 extern unsigned _nc_tracing;
102 #define okMenuNo(n) (((n) > eBanner) && ((n) < eMAX))
106 static MENU *mpBanner;
108 static MENU *mpSelect;
111 #define strdup my_strdup
115 char *p = typeMalloc(char, strlen(s) + 1);
120 #endif /* not HAVE_STRDUP */
122 /* Common function to allow ^T to toggle trace-mode in the middle of a test
123 * so that trace-files can be made smaller.
126 wGetchar(WINDOW *win)
130 while ((c = wgetch(win)) == CTRL('T')) {
132 save_trace = _nc_tracing;
133 Trace(("TOGGLE-TRACING OFF"));
136 _nc_tracing = save_trace;
140 Trace(("TOGGLE-TRACING ON"));
147 #define Getchar() wGetchar(stdscr)
150 menu_virtualize(int c)
154 if (c == '\n' || c == KEY_EXIT)
155 result = (MAX_COMMAND + 1);
157 result = (REQ_SCR_ULINE);
159 result = (REQ_SCR_DLINE);
160 else if (c == 'b' || c == KEY_NPAGE)
161 result = (REQ_SCR_UPAGE);
162 else if (c == 'f' || c == KEY_PPAGE)
163 result = (REQ_SCR_DPAGE);
164 else if (c == 'l' || c == KEY_LEFT || c == KEY_BTAB)
165 result = (REQ_LEFT_ITEM);
166 else if (c == 'n' || c == KEY_DOWN)
167 result = (REQ_NEXT_ITEM);
168 else if (c == 'p' || c == KEY_UP)
169 result = (REQ_PREV_ITEM);
170 else if (c == 'r' || c == KEY_RIGHT || c == '\t')
171 result = (REQ_RIGHT_ITEM);
173 result = (REQ_TOGGLE_ITEM);
185 return wGetchar(menu_win(m));
189 menu_offset(MenuNo number)
193 if (okMenuNo(number)) {
194 int spc_desc, spc_rows, spc_cols;
196 #ifdef NCURSES_VERSION
197 menu_spacing(mpBanner, &spc_desc, &spc_rows, &spc_cols);
202 /* FIXME: MENU.itemlen seems the only way to get actual width of items */
203 result = (number - (eBanner + 1)) * (mpBanner->itemlen + spc_rows);
209 menu_create(ITEM ** items, int count, int ncols, MenuNo number)
214 int y = okMenuNo(number) ? MENU_Y : 0;
215 int x = menu_offset(number);
216 int margin = (y == MENU_Y) ? 1 : 0;
217 int maxcol = (ncols + x) < COLS ? ncols : (COLS - x - 1);
218 int maxrow = (count + 1) / ncols;
220 if ((maxrow + y) >= (LINES - 4))
221 maxrow = LINES - 4 - y;
223 result = new_menu(items);
226 set_menu_fore(result, COLOR_PAIR(1));
227 set_menu_back(result, COLOR_PAIR(2));
230 set_menu_format(result, maxrow, maxcol);
231 scale_menu(result, &mrows, &mcols);
233 if (mcols + (2 * margin + x) >= COLS)
234 mcols = COLS - (2 * margin + x);
237 if (number == eTrace)
238 menu_opts_off(result, O_ONEVALUE);
240 menu_opts_on(result, O_ONEVALUE);
243 menuwin = newwin(mrows + (2 * margin), mcols + (2 * margin), y, x);
244 set_menu_win(result, menuwin);
245 keypad(menuwin, TRUE);
249 set_menu_sub(result, derwin(menuwin, mrows, mcols, margin, margin));
257 menu_destroy(MENU * m)
261 Trace(("menu_destroy %p", m));
263 ITEM **items = menu_items(m);
264 const char *blob = 0;
266 count = item_count(m);
267 Trace(("menu_destroy %p count %d", m, count));
268 if ((count > 0) && (m == mpSelect)) {
269 blob = item_name(*items);
275 /* free the extra data allocated in build_select_menu() */
276 if ((count > 0) && (m == mpSelect)) {
278 Trace(("freeing blob %p", blob));
284 if ((count > 0) && (m == mpTrace)) {
293 /* force the given menu to appear */
295 menu_display(MENU * m)
297 touchwin(menu_win(m));
298 wrefresh(menu_win(m));
301 /*****************************************************************************/
304 build_file_menu(MenuNo number)
306 static CONST_MENUS char *labels[] =
311 static ITEM *items[SIZEOF(labels)];
314 CONST_MENUS char **ap;
316 for (ap = labels; *ap; ap++)
317 *ip++ = new_item(*ap, "");
320 mpFile = menu_create(items, SIZEOF(labels) - 1, 1, number);
324 perform_file_menu(int cmd)
326 return menu_driver(mpFile, cmd);
329 /*****************************************************************************/
332 build_select_menu(MenuNo number, char *filename)
334 static CONST_MENUS char *labels[] =
347 "Lions, Tigers, Bears, (Oh my!), Newts, Platypi, Lemurs",
348 "Lions, Tigers, Bears, (Oh my!), Newts, Platypi, Lemurs, Lions, Tigers, Bears, (Oh my!), Newts, Platypi, Lemurs",
354 CONST_MENUS char **ap = 0;
355 CONST_MENUS char **myList = 0;
360 if (stat(filename, &sb) == 0
361 && (sb.st_mode & S_IFMT) == S_IFREG
362 && sb.st_size != 0) {
363 size_t size = (size_t) sb.st_size;
365 char *blob = typeMalloc(char, size + 1);
366 CONST_MENUS char **list = typeCalloc(CONST_MENUS char *, size + 1);
368 items = typeCalloc(ITEM *, size + 1);
369 Trace(("build_select_menu blob=%p, items=%p", blob, items));
370 if (blob != 0 && list != 0) {
371 FILE *fp = fopen(filename, "r");
373 if (fread(blob, sizeof(char), size, fp) == size) {
375 for (j = k = 0; j < size; ++j) {
377 list[k++] = blob + j;
380 if (blob[j] == '\n') {
382 if (k > 0 && *list[k - 1] == '\0')
385 } else if (blob[j] == '\t') {
386 blob[j] = ' '; /* menu items are printable */
399 count = SIZEOF(labels) - 1;
400 items = typeCalloc(ITEM *, count + 1);
406 *ip++ = new_item(*ap++, "");
409 mpSelect = menu_create(items, (int) count, 1, number);
415 perform_select_menu(int cmd)
417 return menu_driver(mpSelect, cmd);
420 /*****************************************************************************/
423 #define T_TBL(name) { #name, name }
429 T_TBL(TRACE_DISABLE),
434 T_TBL(TRACE_CHARPUT),
435 T_TBL(TRACE_ORDINARY),
437 T_TBL(TRACE_VIRTPUT),
442 T_TBL(TRACE_DATABASE),
444 T_TBL(TRACE_MAXIMUM),
451 build_trace_menu(MenuNo number)
453 static ITEM *items[SIZEOF(t_tbl)];
458 for (n = 0; t_tbl[n].name != 0; n++)
459 *ip++ = new_item(t_tbl[n].name, "");
462 mpTrace = menu_create(items, SIZEOF(t_tbl) - 1, 2, number);
466 tracetrace(unsigned tlevel)
473 for (n = 0; t_tbl[n].name != 0; n++)
474 need += strlen(t_tbl[n].name) + 2;
475 buf = typeMalloc(char, need);
477 sprintf(buf, "0x%02x = {", tlevel);
479 sprintf(buf + strlen(buf), "%s, ", t_tbl[0].name);
481 for (n = 1; t_tbl[n].name != 0; n++)
482 if ((tlevel & t_tbl[n].mask) == t_tbl[n].mask) {
483 strcat(buf, t_tbl[n].name);
487 if (buf[strlen(buf) - 2] == ',')
488 buf[strlen(buf) - 2] = '\0';
489 return (strcat(buf, "}"));
492 /* fake a dynamically reconfigurable menu using the 0th entry to deselect
496 update_trace_menu(MENU * m)
500 bool changed = FALSE;
502 items = menu_items(m);
506 for (p = items + 1; *p != 0; p++)
507 if (item_value(*p)) {
508 set_item_value(*p, FALSE);
517 perform_trace_menu(int cmd)
518 /* interactively set the trace level */
524 for (ip = menu_items(mpTrace); *ip; ip++) {
525 unsigned mask = t_tbl[item_index(*ip)].mask;
527 set_item_value(*ip, _nc_tracing == 0);
528 else if ((mask & _nc_tracing) == mask)
529 set_item_value(*ip, TRUE);
532 result = menu_driver(mpTrace, cmd);
534 if (result == E_OK) {
535 if (update_trace_menu(mpTrace) || cmd == REQ_TOGGLE_ITEM) {
537 for (ip = menu_items(mpTrace); *ip; ip++) {
539 newtrace |= t_tbl[item_index(*ip)].mask;
542 Trace(("trace level interactively set to %s", tracetrace(_nc_tracing)));
544 (void) mvprintw(LINES - 2, 0,
545 "Trace level is %s\n", tracetrace(_nc_tracing));
553 /*****************************************************************************/
558 return item_index(current_item(mpBanner)) - (eBanner + 1);
566 switch (menu_number()) {
586 build_menus(char *filename)
588 static CONST_MENUS char *labels[] =
597 static ITEM *items[SIZEOF(labels)];
600 CONST_MENUS char **ap;
602 for (ap = labels; *ap; ap++)
603 *ip++ = new_item(*ap, "");
606 mpBanner = menu_create(items, SIZEOF(labels) - 1, SIZEOF(labels) - 1, eBanner);
607 set_menu_mark(mpBanner, ">");
609 build_file_menu(eFile);
610 build_select_menu(eSelect, filename);
612 build_trace_menu(eTrace);
617 move_menu(MENU * menu, MENU * current, int by_y, int by_x)
619 WINDOW *top_win = menu_win(menu);
620 WINDOW *sub_win = menu_sub(menu);
625 getbegyx(top_win, y0, x0);
629 getbegyx(sub_win, y1, x1);
633 if ((result = mvwin(top_win, y0, x0)) != ERR) {
634 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH < 20060218)
638 mvwin(sub_win, y1, x1);
640 if (menu == current) {
642 wnoutrefresh(top_win);
649 * Move the menus around on the screen, to test mvwin().
652 move_menus(MENU * current, int by_y, int by_x)
654 if (move_menu(mpBanner, current, by_y, by_x) != ERR) {
656 wnoutrefresh(stdscr);
657 move_menu(mpFile, current, by_y, by_x);
658 move_menu(mpSelect, current, by_y, by_x);
660 move_menu(mpTrace, current, by_y, by_x);
667 show_status(int ch, MENU * menu)
670 printw("key %s, menu %d, mark %s, match %s",
683 MENU *last_menu = mpFile;
684 int code = E_UNKNOWN_COMMAND;
688 #ifdef NCURSES_MOUSE_VERSION
689 mousemask(ALL_MOUSE_EVENTS, (mmask_t *) 0);
692 menu_display(last_menu);
697 show_status(ch, last_menu);
699 ch = menu_getc(mpBanner);
702 * Provide for moving the menu around in the screen using shifted
707 move_menus(last_menu, 1, 0);
710 move_menus(last_menu, -1, 0);
713 move_menus(last_menu, 0, -1);
716 move_menus(last_menu, 0, 1);
719 cmd = menu_virtualize(ch);
723 * The banner menu acts solely to select one of the other menus.
724 * Move between its items, wrapping at the left/right limits.
728 code = menu_driver(mpBanner, cmd);
729 if (code == E_REQUEST_DENIED) {
730 if (menu_number() > 0)
731 code = menu_driver(mpBanner, REQ_FIRST_ITEM);
733 code = menu_driver(mpBanner, REQ_LAST_ITEM);
737 switch (menu_number()) {
739 code = perform_file_menu(cmd);
742 code = perform_select_menu(cmd);
746 code = perform_trace_menu(cmd);
751 if ((code == E_REQUEST_DENIED) && (cmd == KEY_MOUSE)) {
752 code = menu_driver(mpBanner, cmd);
759 this_menu = current_menu();
760 if (this_menu != last_menu) {
763 box(menu_win(this_menu), 0, 0);
766 /* force the current menu to appear */
767 menu_display(this_menu);
769 last_menu = this_menu;
772 wrefresh(menu_win(last_menu));
773 if (code == E_UNKNOWN_COMMAND
774 || code == E_NOT_POSTED) {
775 if (menu_number() == eFile)
779 if (code == E_REQUEST_DENIED)
784 #ifdef NCURSES_MOUSE_VERSION
785 mousemask(0, (mmask_t *) 0);
792 menu_destroy(mpFile);
793 menu_destroy(mpSelect);
795 menu_destroy(mpTrace);
797 menu_destroy(mpBanner);
802 rip_footer(WINDOW *win, int cols)
804 wbkgd(win, A_REVERSE);
807 wprintw(win, "footer: %d columns", cols);
813 rip_header(WINDOW *win, int cols)
815 wbkgd(win, A_REVERSE);
818 wprintw(win, "header: %d columns", cols);
822 #endif /* HAVE_RIPOFFLINE */
827 static const char *const tbl[] =
829 "Usage: demo_menus [options]"
833 ," -f rip-off footer line (can repeat)"
834 ," -h rip-off header line (can repeat)"
837 ," -t mask specify default trace-level (may toggle with ^T)"
841 for (n = 0; n < SIZEOF(tbl); n++)
842 fprintf(stderr, "%s\n", tbl[n]);
843 ExitProgram(EXIT_FAILURE);
847 main(int argc, char *argv[])
851 setlocale(LC_ALL, "");
853 while ((c = getopt(argc, argv, "a:de:fhmp:s:t:")) != -1) {
857 ripoffline(-1, rip_footer);
860 ripoffline(1, rip_header);
862 #endif /* HAVE_RIPOFFLINE */
865 trace(strtoul(optarg, 0, 0));
880 init_pair(1, COLOR_RED, COLOR_BLACK);
881 init_pair(2, COLOR_BLUE, COLOR_WHITE);
883 build_menus(argc > 1 ? argv[1] : 0);
888 ExitProgram(EXIT_SUCCESS);
894 printf("This program requires the curses menu library\n");
895 ExitProgram(EXIT_FAILURE);