static void
test_redraw(WINDOW *win)
{
WINDOW *win1;
WINDOW *win2;
bool done = FALSE;
int ch, y, x;
int max_y, max_x;
int beg_y, beg_x;
assert(win != 0);
scrollok(win, TRUE);
keypad(win, TRUE);
getmaxyx(win, max_y, max_x);
getbegyx(win, beg_y, beg_x);
while (!done && win != 0) {
ch = wgetch(win);
getyx(win, y, x);
switch (ch) {
case 'q':
/* FALLTHRU */
case ESCAPE:
done = TRUE;
break;
case 'w':
win1 = newwin(max_y, max_x,
beg_y, beg_x);
win2 = newwin(max_y - 2, max_x - 2,
beg_y + 1, beg_x + 1);
box(win1, 0, 0);
wrefresh(win1);
test_redraw(win2);
delwin(win2);
delwin(win1);
touchwin(win);
break;
case '!':
/*
* redrawwin() and wredrawln() do not take into account the
* possibility that the cursor may have moved. That makes them
* cumbersome for using with a shell command. So we simply
* trash the current line of the window using backspace/overwrite.
*/
trash(beg_x, max_x, x + beg_x);
break;
#ifdef NCURSES_VERSION
case '@':
/*
* For a shell command, we can work around the problem noted above
* using mvcur(). It is ifdef'd for NCURSES, since X/Open does
* not define the case where the old location is unknown.
*/
IGNORE_RC(system("date"));
mvcur(-1, -1, y, x);
break;
#endif
case CTRL('W'):
redrawwin(win);
break;
case CTRL('L'):
wredrawln(win, y, 1);
break;
case KEY_UP:
if (y > 0)
wmove(win, y - 1, x);
break;
case KEY_DOWN:
if (y < max_y)
wmove(win, y + 1, x);
break;
case KEY_LEFT:
if (x > 0)
wmove(win, y, x - 1);
break;
case KEY_RIGHT:
if (x < max_x)
wmove(win, y, x + 1);
break;
default:
if (ch > KEY_MIN) {
waddstr(win, keyname(ch));
} else {
waddstr(win, unctrl(UChar(ch)));
}
break;
}
wnoutrefresh(win);
doupdate();
}
}
static void
test_redraw(WINDOW *win)
{
static const char *help[] =
{
"Commands:",
" ^Q/ESC/q - quit",
" w - recur in a new window",
" ! - overwrite current line using stdio outside curses.",
#ifdef NCURSES_VERSION
" @ - run \"date\" command, to put its output on screen.",
#endif
" ^L - call redrawwin() for current window.",
" ^W - call wredrawln() for current line/current window.",
" arrow-keys - move cursor on the screen",
"",
"Other control characters are added to the screen in printable form.",
"Other printable characters are added to the screen as is.",
0
};
WINDOW *win1;
WINDOW *win2;
bool done = FALSE;
int ch, y, x;
int max_y, max_x;
int beg_y, beg_x;
assert(win != 0);
scrollok(win, TRUE);
keypad(win, TRUE);
getmaxyx(win, max_y, max_x);
getbegyx(win, beg_y, beg_x);
while (!done) {
ch = wgetch(win);
getyx(win, y, x);
switch (ch) {
case 'q':
/* FALLTHRU */
case QUIT:
case ESCAPE:
done = TRUE;
break;
case 'w':
win1 = newwin(max_y, max_x,
beg_y, beg_x);
win2 = newwin(max_y - 2, max_x - 2,
beg_y + 1, beg_x + 1);
box(win1, 0, 0);
wrefresh(win1);
test_redraw(win2);
delwin(win2);
delwin(win1);
touchwin(win);
break;
case '!':
/*
* redrawwin() and wredrawln() do not take into account the
* possibility that the cursor may have moved. That makes them
* cumbersome for using with a shell command. So we simply
* trash the current line of the window using backspace/overwrite.
*/
trash(beg_x, max_x, x + beg_x);
break;
#ifdef NCURSES_VERSION
case '@':
/*
* For a shell command, we can work around the problem noted above
* using mvcur(). It is ifdef'd for NCURSES, since X/Open does
* not define the case where the old location is unknown.
*/
IGNORE_RC(system("date"));
mvcur(-1, -1, y, x);
break;
#endif
case CTRL('W'):
redrawwin(win);
break;
case CTRL('L'):
wredrawln(win, y, 1);
break;
case KEY_UP:
if (y > 0)
wmove(win, y - 1, x);
break;
case KEY_DOWN:
if (y < max_y)
wmove(win, y + 1, x);
break;
case KEY_LEFT:
if (x > 0)
wmove(win, y, x - 1);
break;
case KEY_RIGHT:
if (x < max_x)
wmove(win, y, x + 1);
break;
case HELP_KEY_1:
popup_msg(win, help);
break;
default:
if (ch > KEY_MIN) {
waddstr(win, keyname(ch));
waddch(win, '\n');
} else {
waddstr(win, unctrl(UChar(ch)));
}
break;
}
wnoutrefresh(win);
doupdate();
}
}
