/*
* Display a temporary window listing the keystroke-commands we recognize.
*/
void
help_edit_field(void)
{
int x0 = 4;
int y0 = 2;
int y1 = 0;
int y2 = 0;
int wide = COLS - ((x0 + 1) * 2);
int high = LINES - ((y0 + 1) * 2);
WINDOW *help = newwin(high, wide, y0, x0);
WINDOW *data = newpad(2 + SIZEOF(commands), wide - 4);
unsigned n;
int ch = ERR;
begin_popup();
keypad(help, TRUE);
keypad(data, TRUE);
waddstr(data, "Defined form edit/traversal keys:\n");
for (n = 0; n < SIZEOF(commands); ++n) {
const char *name;
#ifdef NCURSES_VERSION
if ((name = form_request_name(commands[n].result)) == 0)
#endif
name = commands[n].help;
wprintw(data, "%s -- %s\n",
keyname(commands[n].code),
name != 0 ? name : commands[n].help);
}
waddstr(data, "Arrow keys move within a field as you would expect.");
y2 = getcury(data);
do {
switch (ch) {
case KEY_HOME:
y1 = 0;
break;
case KEY_END:
y1 = y2;
break;
case KEY_PREVIOUS:
case KEY_PPAGE:
if (y1 > 0) {
y1 -= high / 2;
if (y1 < 0)
y1 = 0;
} else {
beep();
}
break;
case KEY_NEXT:
case KEY_NPAGE:
if (y1 < y2) {
y1 += high / 2;
if (y1 >= y2)
y1 = y2;
} else {
beep();
}
break;
case CTRL('P'):
case KEY_UP:
if (y1 > 0)
--y1;
else
beep();
break;
case CTRL('N'):
case KEY_DOWN:
if (y1 < y2)
++y1;
else
beep();
break;
default:
beep();
break;
case ERR:
break;
}
werase(help);
box(help, 0, 0);
wnoutrefresh(help);
pnoutrefresh(data, y1, 0, y0 + 1, x0 + 1, high, wide);
doupdate();
} while ((ch = wgetch(data)) != ERR && ch != QUIT && ch != ESCAPE);
werase(help);
wrefresh(help);
delwin(help);
delwin(data);
end_popup();
}
/*
* Display a temporary window, e.g., to display a help-message.
*/
void
popup_msg(WINDOW *parent, const char *const *msg)
{
int x0 = 4;
int y0 = 2;
int y1 = 0;
int y2 = 0;
int wide = getmaxx(parent) - ((x0 + 1) * 2);
int high = getmaxy(parent) - ((y0 + 1) * 2);
WINDOW *help;
WINDOW *data;
int n;
int width = 0;
int length;
int last_y;
int ch = ERR;
for (n = 0; msg[n] != 0; ++n) {
int check = (int) strlen(msg[n]);
if (width < check)
width = check;
}
length = n;
if ((help = newwin(high, wide, y0, x0)) == 0)
return;
if ((data = newpad(length + 1, width)) == 0)
return;
begin_popup();
keypad(data, TRUE);
for (n = 0; n < length; ++n) {
waddstr(data, msg[n]);
if ((n + 1) < length) {
waddch(data, '\n');
}
}
y2 = getcury(data);
last_y = (y2 - (high - 3));
do {
switch (ch) {
case KEY_HOME:
y1 = 0;
break;
case KEY_END:
y1 = last_y;
break;
case KEY_PREVIOUS:
case KEY_PPAGE:
if (y1 > 0) {
y1 -= high / 2;
if (y1 < 0)
y1 = 0;
} else {
beep();
}
break;
case KEY_NEXT:
case KEY_NPAGE:
if (y1 < last_y) {
y1 += high / 2;
if (y1 > last_y)
y1 = last_y;
} else {
beep();
}
break;
case CTRL('P'):
case KEY_UP:
if (y1 > 0)
--y1;
else
beep();
break;
case CTRL('N'):
case KEY_DOWN:
if (y1 < last_y)
++y1;
else
beep();
break;
default:
beep();
break;
case ERR:
break;
}
werase(help);
box(help, 0, 0);
wnoutrefresh(help);
pnoutrefresh(data, y1, 0, y0 + 1, x0 + 1, high, wide);
doupdate();
} while ((ch = wgetch(data)) != ERR && ch != QUIT && ch != ESCAPE);
werase(help);
wrefresh(help);
delwin(help);
delwin(data);
end_popup();
}
