void
menu_format(MENU *m, int *rows, int *cols)
{
if (m) {
*rows = FRows(m);
*cols = FCols(m);
} else {
*rows = FRows(Dfl_Menu);
*cols = FCols(Dfl_Menu);
}
}
int
set_menu_format(MENU *m, int rows, int cols)
{
if (rows < 0 || cols < 0) {
return (E_BAD_ARGUMENT);
}
if (m) {
if (Posted(m)) {
return (E_POSTED);
}
if (rows == 0) {
rows = FRows(m);
}
if (cols == 0) {
cols = FCols(m);
}
/* The pattern buffer is allocated after items have been */
/* connected */
if (Pattern(m)) {
IthPattern(m, 0) = '\0';
Pindex(m) = 0;
}
FRows(m) = rows;
FCols(m) = cols;
Cols(m) = min(cols, Nitems(m));
Rows(m) = (Nitems(m)-1) / cols + 1;
Height(m) = min(rows, Rows(m));
Top(m) = 0;
Current(m) = IthItem(m, 0);
SetLink(m);
_scale(m);
} else {
if (rows > 0) {
FRows(Dfl_Menu) = rows;
}
if (cols > 0) {
FCols(Dfl_Menu) = cols;
}
}
return (E_OK);
}
MENU *
new_menu(ITEM **items)
{
MENU *m;
if ((m = (MENU *) calloc(1, sizeof (MENU))) != (MENU *)0) {
*m = *Dfl_Menu;
Rows(m) = FRows(m);
Cols(m) = FCols(m);
if (items) {
if (*items == (ITEM *)0 || !_connect(m, items)) {
free(m);
return ((MENU *)0);
}
}
return (m);
}
return ((MENU *)0);
}
int
set_menu_opts(MENU *m, int opt)
{
ITEM **ip;
if (m) {
if (Posted(m)) {
return (E_POSTED);
}
/* Check to see if the ROWMAJOR option is changing. If so, */
/* set top and current to 0. */
if ((opt & O_ROWMAJOR) != RowMajor(m)) {
Top(m) = 0;
Current(m) = IthItem(m, 0);
(void) set_menu_format(m, FRows(m), FCols(m));
}
/* if O_NONCYCLIC option changed, set bit to re-link items */
if ((opt & O_NONCYCLIC) != (Mopt(m) & O_NONCYCLIC)) {
SetLink(m);
}
Mopt(m) = opt;
if (OneValue(m) && Items(m)) {
for (ip = Items(m); *ip; ip++) {
/* Unset values if selection not allowed. */
Value(*ip) = FALSE;
}
}
_scale(m); /* Redo sizing information */
} else {
Mopt(Dfl_Menu) = opt;
}
return (E_OK);
}