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| Current File : //proc/2/cwd/usr/share/doc/ncurses-devel-5.7/test/demo_menus.c |
/****************************************************************************
* Copyright (c) 2005-2007,2008 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/*
* $Id: demo_menus.c,v 1.28 2008/08/23 20:31:54 tom Exp $
*
* Demonstrate a variety of functions from the menu library.
* Thomas Dickey - 2005/4/9
*/
/*
item_description -
item_init -
item_opts -
item_opts_off -
item_opts_on -
item_term -
item_userptr -
item_visible -
menu_back -
menu_fore -
menu_format -
menu_grey -
menu_init -
menu_opts -
menu_pad -
menu_request_by_name -
menu_request_name -
menu_sub -
menu_term -
menu_userptr -
set_current_item -
set_item_init -
set_item_opts -
set_item_term -
set_item_userptr -
set_menu_grey -
set_menu_init -
set_menu_items -
set_menu_opts -
set_menu_pad -
set_menu_pattern -
set_menu_spacing -
set_menu_term -
set_menu_userptr -
set_top_row -
top_row -
*/
#include <test.priv.h>
#if USE_LIBMENU
#include <menu.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef NCURSES_VERSION
#ifdef TRACE
static unsigned save_trace = TRACE_ORDINARY | TRACE_CALLS;
extern unsigned _nc_tracing;
static MENU *mpTrace;
#endif
#else
#undef TRACE
#endif
typedef enum {
eBanner = -1
,eFile
,eSelect
#ifdef TRACE
,eTrace
#endif
,eMAX
} MenuNo;
#define okMenuNo(n) (((n) > eBanner) && ((n) < eMAX))
#define MENU_Y 1
static MENU *mpBanner;
static MENU *mpFile;
static MENU *mpSelect;
static bool loaded_file = FALSE;
#if !HAVE_STRDUP
#define strdup my_strdup
static char *
strdup(char *s)
{
char *p = typeMalloc(char, strlen(s) + 1);
if (p)
strcpy(p, s);
return (p);
}
#endif /* not HAVE_STRDUP */
/* Common function to allow ^T to toggle trace-mode in the middle of a test
* so that trace-files can be made smaller.
*/
static int
wGetchar(WINDOW *win)
{
int c;
#ifdef TRACE
while ((c = wgetch(win)) == CTRL('T')) {
if (_nc_tracing) {
save_trace = _nc_tracing;
Trace(("TOGGLE-TRACING OFF"));
_nc_tracing = 0;
} else {
_nc_tracing = save_trace;
}
trace(_nc_tracing);
if (_nc_tracing)
Trace(("TOGGLE-TRACING ON"));
}
#else
c = wgetch(win);
#endif
return c;
}
#define Getchar() wGetchar(stdscr)
static int
menu_virtualize(int c)
{
int result;
if (c == '\n' || c == KEY_EXIT)
result = (MAX_COMMAND + 1);
else if (c == 'u')
result = (REQ_SCR_ULINE);
else if (c == 'd')
result = (REQ_SCR_DLINE);
else if (c == 'b' || c == KEY_NPAGE)
result = (REQ_SCR_UPAGE);
else if (c == 'f' || c == KEY_PPAGE)
result = (REQ_SCR_DPAGE);
else if (c == 'l' || c == KEY_LEFT || c == KEY_BTAB)
result = (REQ_LEFT_ITEM);
else if (c == 'n' || c == KEY_DOWN)
result = (REQ_NEXT_ITEM);
else if (c == 'p' || c == KEY_UP)
result = (REQ_PREV_ITEM);
else if (c == 'r' || c == KEY_RIGHT || c == '\t')
result = (REQ_RIGHT_ITEM);
else if (c == ' ')
result = (REQ_TOGGLE_ITEM);
else {
if (c != KEY_MOUSE)
beep();
result = (c);
}
return result;
}
static int
menu_getc(MENU * m)
{
return wGetchar(menu_win(m));
}
static int
menu_offset(MenuNo number)
{
int result = 0;
if (okMenuNo(number)) {
int spc_desc, spc_rows, spc_cols;
#ifdef NCURSES_VERSION
menu_spacing(mpBanner, &spc_desc, &spc_rows, &spc_cols);
#else
spc_rows = 0;
#endif
/* FIXME: MENU.itemlen seems the only way to get actual width of items */
result = (number - (eBanner + 1)) * (mpBanner->itemlen + spc_rows);
}
return result;
}
static MENU *
menu_create(ITEM ** items, int count, int ncols, MenuNo number)
{
MENU *result;
WINDOW *menuwin;
int mrows, mcols;
int y = okMenuNo(number) ? MENU_Y : 0;
int x = menu_offset(number);
int margin = (y == MENU_Y) ? 1 : 0;
int maxcol = (ncols + x) < COLS ? ncols : (COLS - x - 1);
int maxrow = (count + 1) / ncols;
if ((maxrow + y) >= (LINES - 4))
maxrow = LINES - 4 - y;
result = new_menu(items);
if (has_colors()) {
set_menu_fore(result, COLOR_PAIR(1));
set_menu_back(result, COLOR_PAIR(2));
}
set_menu_format(result, maxrow, maxcol);
scale_menu(result, &mrows, &mcols);
if (mcols + (2 * margin + x) >= COLS)
mcols = COLS - (2 * margin + x);
#ifdef TRACE
if (number == eTrace)
menu_opts_off(result, O_ONEVALUE);
else
menu_opts_on(result, O_ONEVALUE);
#endif
menuwin = newwin(mrows + (2 * margin), mcols + (2 * margin), y, x);
set_menu_win(result, menuwin);
keypad(menuwin, TRUE);
if (margin)
box(menuwin, 0, 0);
set_menu_sub(result, derwin(menuwin, mrows, mcols, margin, margin));
post_menu(result);
return result;
}
static void
menu_destroy(MENU * m)
{
int count;
Trace(("menu_destroy %p", m));
if (m != 0) {
ITEM **items = menu_items(m);
const char *blob = 0;
count = item_count(m);
Trace(("menu_destroy %p count %d", m, count));
if ((count > 0) && (m == mpSelect)) {
blob = item_name(*items);
}
unpost_menu(m);
free_menu(m);
/* free the extra data allocated in build_select_menu() */
if ((count > 0) && (m == mpSelect)) {
if (blob && loaded_file) {
Trace(("freeing blob %p", blob));
free((char *) blob);
}
free(items);
}
#ifdef TRACE
if ((count > 0) && (m == mpTrace)) {
ITEM **ip = items;
while (*ip)
free(*ip++);
}
#endif
}
}
/* force the given menu to appear */
static void
menu_display(MENU * m)
{
touchwin(menu_win(m));
wrefresh(menu_win(m));
}
/*****************************************************************************/
static void
build_file_menu(MenuNo number)
{
static CONST_MENUS char *labels[] =
{
"Exit",
(char *) 0
};
static ITEM *items[SIZEOF(labels)];
ITEM **ip = items;
CONST_MENUS char **ap;
for (ap = labels; *ap; ap++)
*ip++ = new_item(*ap, "");
*ip = (ITEM *) 0;
mpFile = menu_create(items, SIZEOF(labels) - 1, 1, number);
}
static int
perform_file_menu(int cmd)
{
return menu_driver(mpFile, cmd);
}
/*****************************************************************************/
static void
build_select_menu(MenuNo number, char *filename)
{
static CONST_MENUS char *labels[] =
{
"Lions",
"Tigers",
"Bears",
"(Oh my!)",
"Newts",
"Platypi",
"Lemurs",
"(Oh really?!)",
"Leopards",
"Panthers",
"Pumas",
"Lions, Tigers, Bears, (Oh my!), Newts, Platypi, Lemurs",
"Lions, Tigers, Bears, (Oh my!), Newts, Platypi, Lemurs, Lions, Tigers, Bears, (Oh my!), Newts, Platypi, Lemurs",
(char *) 0
};
static ITEM **items;
ITEM **ip;
CONST_MENUS char **ap = 0;
CONST_MENUS char **myList = 0;
unsigned count = 0;
if (filename != 0) {
struct stat sb;
if (stat(filename, &sb) == 0
&& (sb.st_mode & S_IFMT) == S_IFREG
&& sb.st_size != 0) {
size_t size = (size_t) sb.st_size;
unsigned j, k;
char *blob = typeMalloc(char, size + 1);
CONST_MENUS char **list = typeCalloc(CONST_MENUS char *, size + 1);
items = typeCalloc(ITEM *, size + 1);
Trace(("build_select_menu blob=%p, items=%p", blob, items));
if (blob != 0 && list != 0) {
FILE *fp = fopen(filename, "r");
if (fp != 0) {
if (fread(blob, sizeof(char), size, fp) == size) {
bool mark = TRUE;
for (j = k = 0; j < size; ++j) {
if (mark) {
list[k++] = blob + j;
mark = FALSE;
}
if (blob[j] == '\n') {
blob[j] = '\0';
if (k > 0 && *list[k - 1] == '\0')
--k;
mark = TRUE;
} else if (blob[j] == '\t') {
blob[j] = ' '; /* menu items are printable */
}
}
list[k] = 0;
count = k;
ap = myList = list;
}
fclose(fp);
}
loaded_file = TRUE;
}
}
}
if (ap == 0) {
count = SIZEOF(labels) - 1;
items = typeCalloc(ITEM *, count + 1);
ap = labels;
}
ip = items;
while (*ap != 0)
*ip++ = new_item(*ap++, "");
*ip = 0;
mpSelect = menu_create(items, (int) count, 1, number);
if (myList != 0)
free(myList);
}
static int
perform_select_menu(int cmd)
{
return menu_driver(mpSelect, cmd);
}
/*****************************************************************************/
#ifdef TRACE
#define T_TBL(name) { #name, name }
static struct {
const char *name;
unsigned mask;
} t_tbl[] = {
T_TBL(TRACE_DISABLE),
T_TBL(TRACE_TIMES),
T_TBL(TRACE_TPUTS),
T_TBL(TRACE_UPDATE),
T_TBL(TRACE_MOVE),
T_TBL(TRACE_CHARPUT),
T_TBL(TRACE_ORDINARY),
T_TBL(TRACE_CALLS),
T_TBL(TRACE_VIRTPUT),
T_TBL(TRACE_IEVENT),
T_TBL(TRACE_BITS),
T_TBL(TRACE_ICALLS),
T_TBL(TRACE_CCALLS),
T_TBL(TRACE_DATABASE),
T_TBL(TRACE_ATTRS),
T_TBL(TRACE_MAXIMUM),
{
(char *) 0, 0
}
};
static void
build_trace_menu(MenuNo number)
{
static ITEM *items[SIZEOF(t_tbl)];
ITEM **ip = items;
int n;
for (n = 0; t_tbl[n].name != 0; n++)
*ip++ = new_item(t_tbl[n].name, "");
*ip = (ITEM *) 0;
mpTrace = menu_create(items, SIZEOF(t_tbl) - 1, 2, number);
}
static char *
tracetrace(unsigned tlevel)
{
static char *buf;
int n;
if (buf == 0) {
size_t need = 12;
for (n = 0; t_tbl[n].name != 0; n++)
need += strlen(t_tbl[n].name) + 2;
buf = typeMalloc(char, need);
}
sprintf(buf, "0x%02x = {", tlevel);
if (tlevel == 0) {
sprintf(buf + strlen(buf), "%s, ", t_tbl[0].name);
} else {
for (n = 1; t_tbl[n].name != 0; n++)
if ((tlevel & t_tbl[n].mask) == t_tbl[n].mask) {
strcat(buf, t_tbl[n].name);
strcat(buf, ", ");
}
}
if (buf[strlen(buf) - 2] == ',')
buf[strlen(buf) - 2] = '\0';
return (strcat(buf, "}"));
}
/* fake a dynamically reconfigurable menu using the 0th entry to deselect
* the others
*/
static bool
update_trace_menu(MENU * m)
{
ITEM **items;
ITEM *i, **p;
bool changed = FALSE;
items = menu_items(m);
i = current_item(m);
if (i == items[0]) {
if (item_value(i)) {
for (p = items + 1; *p != 0; p++)
if (item_value(*p)) {
set_item_value(*p, FALSE);
changed = TRUE;
}
}
}
return changed;
}
static int
perform_trace_menu(int cmd)
/* interactively set the trace level */
{
ITEM **ip;
unsigned newtrace;
int result;
for (ip = menu_items(mpTrace); *ip; ip++) {
unsigned mask = t_tbl[item_index(*ip)].mask;
if (mask == 0)
set_item_value(*ip, _nc_tracing == 0);
else if ((mask & _nc_tracing) == mask)
set_item_value(*ip, TRUE);
}
result = menu_driver(mpTrace, cmd);
if (result == E_OK) {
if (update_trace_menu(mpTrace) || cmd == REQ_TOGGLE_ITEM) {
newtrace = 0;
for (ip = menu_items(mpTrace); *ip; ip++) {
if (item_value(*ip))
newtrace |= t_tbl[item_index(*ip)].mask;
}
trace(newtrace);
Trace(("trace level interactively set to %s", tracetrace(_nc_tracing)));
(void) mvprintw(LINES - 2, 0,
"Trace level is %s\n", tracetrace(_nc_tracing));
refresh();
}
}
return result;
}
#endif /* TRACE */
/*****************************************************************************/
static int
menu_number(void)
{
return item_index(current_item(mpBanner)) - (eBanner + 1);
}
static MENU *
current_menu(void)
{
MENU *result;
switch (menu_number()) {
case eFile:
result = mpFile;
break;
case eSelect:
result = mpSelect;
break;
#ifdef TRACE
case eTrace:
result = mpTrace;
break;
#endif
default:
result = 0;
break;
}
return result;
}
static void
build_menus(char *filename)
{
static CONST_MENUS char *labels[] =
{
"File",
"Select",
#ifdef TRACE
"Trace",
#endif
(char *) 0
};
static ITEM *items[SIZEOF(labels)];
ITEM **ip = items;
CONST_MENUS char **ap;
for (ap = labels; *ap; ap++)
*ip++ = new_item(*ap, "");
*ip = (ITEM *) 0;
mpBanner = menu_create(items, SIZEOF(labels) - 1, SIZEOF(labels) - 1, eBanner);
set_menu_mark(mpBanner, ">");
build_file_menu(eFile);
build_select_menu(eSelect, filename);
#ifdef TRACE
build_trace_menu(eTrace);
#endif
}
static int
move_menu(MENU * menu, MENU * current, int by_y, int by_x)
{
WINDOW *top_win = menu_win(menu);
WINDOW *sub_win = menu_sub(menu);
int y0, x0;
int y1, x1;
int result;
getbegyx(top_win, y0, x0);
y0 += by_y;
x0 += by_x;
getbegyx(sub_win, y1, x1);
y1 += by_y;
x1 += by_x;
if ((result = mvwin(top_win, y0, x0)) != ERR) {
#if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH < 20060218)
sub_win->_begy = y1;
sub_win->_begx = x1;
#else
mvwin(sub_win, y1, x1);
#endif
if (menu == current) {
touchwin(top_win);
wnoutrefresh(top_win);
}
}
return result;
}
/*
* Move the menus around on the screen, to test mvwin().
*/
static void
move_menus(MENU * current, int by_y, int by_x)
{
if (move_menu(mpBanner, current, by_y, by_x) != ERR) {
erase();
wnoutrefresh(stdscr);
move_menu(mpFile, current, by_y, by_x);
move_menu(mpSelect, current, by_y, by_x);
#ifdef TRACE
move_menu(mpTrace, current, by_y, by_x);
#endif
doupdate();
}
}
static void
show_status(int ch, MENU * menu)
{
move(LINES - 1, 0);
printw("key %s, menu %d, mark %s, match %s",
keyname(ch),
menu_number(),
menu_mark(menu),
menu_pattern(menu));
clrtoeol();
refresh();
}
static void
perform_menus(void)
{
MENU *this_menu;
MENU *last_menu = mpFile;
int code = E_UNKNOWN_COMMAND;
int cmd;
int ch = ERR;
#ifdef NCURSES_MOUSE_VERSION
mousemask(ALL_MOUSE_EVENTS, (mmask_t *) 0);
#endif
menu_display(last_menu);
for (;;) {
if (ch != ERR)
show_status(ch, last_menu);
ch = menu_getc(mpBanner);
/*
* Provide for moving the menu around in the screen using shifted
* cursor keys.
*/
switch (ch) {
case KEY_SF:
move_menus(last_menu, 1, 0);
continue;
case KEY_SR:
move_menus(last_menu, -1, 0);
continue;
case KEY_SLEFT:
move_menus(last_menu, 0, -1);
continue;
case KEY_SRIGHT:
move_menus(last_menu, 0, 1);
continue;
}
cmd = menu_virtualize(ch);
switch (cmd) {
/*
* The banner menu acts solely to select one of the other menus.
* Move between its items, wrapping at the left/right limits.
*/
case REQ_LEFT_ITEM:
case REQ_RIGHT_ITEM:
code = menu_driver(mpBanner, cmd);
if (code == E_REQUEST_DENIED) {
if (menu_number() > 0)
code = menu_driver(mpBanner, REQ_FIRST_ITEM);
else
code = menu_driver(mpBanner, REQ_LAST_ITEM);
}
break;
default:
switch (menu_number()) {
case eFile:
code = perform_file_menu(cmd);
break;
case eSelect:
code = perform_select_menu(cmd);
break;
#ifdef TRACE
case eTrace:
code = perform_trace_menu(cmd);
break;
#endif
}
if ((code == E_REQUEST_DENIED) && (cmd == KEY_MOUSE)) {
code = menu_driver(mpBanner, cmd);
}
break;
}
if (code == E_OK) {
this_menu = current_menu();
if (this_menu != last_menu) {
move(1, 0);
clrtobot();
box(menu_win(this_menu), 0, 0);
refresh();
/* force the current menu to appear */
menu_display(this_menu);
last_menu = this_menu;
}
}
wrefresh(menu_win(last_menu));
if (code == E_UNKNOWN_COMMAND
|| code == E_NOT_POSTED) {
if (menu_number() == eFile)
break;
beep();
}
if (code == E_REQUEST_DENIED)
beep();
continue;
}
#ifdef NCURSES_MOUSE_VERSION
mousemask(0, (mmask_t *) 0);
#endif
}
static void
destroy_menus(void)
{
menu_destroy(mpFile);
menu_destroy(mpSelect);
#ifdef TRACE
menu_destroy(mpTrace);
#endif
menu_destroy(mpBanner);
}
#if HAVE_RIPOFFLINE
static int
rip_footer(WINDOW *win, int cols)
{
wbkgd(win, A_REVERSE);
werase(win);
wmove(win, 0, 0);
wprintw(win, "footer: %d columns", cols);
wnoutrefresh(win);
return OK;
}
static int
rip_header(WINDOW *win, int cols)
{
wbkgd(win, A_REVERSE);
werase(win);
wmove(win, 0, 0);
wprintw(win, "header: %d columns", cols);
wnoutrefresh(win);
return OK;
}
#endif /* HAVE_RIPOFFLINE */
static void
usage(void)
{
static const char *const tbl[] =
{
"Usage: demo_menus [options]"
,""
,"Options:"
#if HAVE_RIPOFFLINE
," -f rip-off footer line (can repeat)"
," -h rip-off header line (can repeat)"
#endif
#ifdef TRACE
," -t mask specify default trace-level (may toggle with ^T)"
#endif
};
size_t n;
for (n = 0; n < SIZEOF(tbl); n++)
fprintf(stderr, "%s\n", tbl[n]);
ExitProgram(EXIT_FAILURE);
}
int
main(int argc, char *argv[])
{
int c;
setlocale(LC_ALL, "");
while ((c = getopt(argc, argv, "a:de:fhmp:s:t:")) != -1) {
switch (c) {
#if HAVE_RIPOFFLINE
case 'f':
ripoffline(-1, rip_footer);
break;
case 'h':
ripoffline(1, rip_header);
break;
#endif /* HAVE_RIPOFFLINE */
#ifdef TRACE
case 't':
trace(strtoul(optarg, 0, 0));
break;
#endif
default:
usage();
}
}
initscr();
noraw();
cbreak();
noecho();
if (has_colors()) {
start_color();
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_BLUE, COLOR_WHITE);
}
build_menus(argc > 1 ? argv[1] : 0);
perform_menus();
destroy_menus();
endwin();
ExitProgram(EXIT_SUCCESS);
}
#else
int
main(void)
{
printf("This program requires the curses menu library\n");
ExitProgram(EXIT_FAILURE);
}
#endif
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