Category : C Source Code
Archive   : CURSESNT.ZIP
Filename : OPTIONS.C

/****************************************************************/
/* Idlok(), clearok(), leaveok(), scrollok(), nodelay(), key- */
/* pad(), meta(), cursoff() and curson() routines of the */
/* PCcurses package. */
/* */
/****************************************************************/
/* This version of curses is based on ncurses, a curses version */
/* originally written by Pavel Curtis at Cornell University. */
/* I have made substantial changes to make it run on IBM PC's, */
/* and therefore consider myself free to make it public domain. */
/* Bjorn Larsson ([email protected]) */
/****************************************************************/
/* 1.4: Use of short wherever possible. Portability */
/* improvements: 900114 */
/* 1.3: MSC -W3, Turbo'C' -w -w-pro checkes: 881005 */
/* 1.2: Rcsid[] string for maintenance: 881002 */
/* 1.0: Release: 870515 */
/****************************************************************/

#include
#include

char _curses_options_rcsid[] = "@(#)option.c v.1.4 - 900114";

static bool hasold = FALSE; /* for remembering old cursor type */
static int oldmode;

/****************************************************************/
/* Idlok() is used to set flag for using the terminal insert/ */
/* delete line capabilities. This is not relevant for the PC */
/* version of curses, and thus nothing is done. */
/****************************************************************/

void idlok()
{
} /* idlok */

/****************************************************************/
/* Clearok() marks window 'win' to cause screen clearing and */
/* redraw the next time a refresh is done. */
/****************************************************************/

void clearok(win, flag)
WINDOW *win;
bool flag;
{
if (win == curscr)
_cursvar.tmpwin->_clear = flag;
else
win->_clear = flag;
} /* clearok */

/****************************************************************/
/* Leaveok() marks window 'win' to allow the update routines */
/* to leave the hardware cursor where it happens to be at the */
/* end of update. Usually used in combination with cursoff(). */
/****************************************************************/

void leaveok(win, flag)
WINDOW *win;
bool flag;
{
win->_leavecurs = flag;
} /* leaveok */

/****************************************************************/
/* Scrollok() marks window 'win' to allow the scrolling region */
/* of it to actually scroll. */
/****************************************************************/

void scrollok(win, flag)
WINDOW *win;
bool flag;
{
win->_scroll = flag;
} /* scrollok */

/****************************************************************/
/* Nodelay() marks the window to make character input non- */
/* waiting, i.e. if there is no character to get, -1 will be */
/* returned. */
/****************************************************************/

void nodelay(win, flag)
WINDOW *win;
bool flag;
{
win->_nodelay = flag;
} /* nodelay */

/****************************************************************/
/* Keypad() marks window 'win' to use the special keypad mode. */
/****************************************************************/

void keypad(win, flag)
WINDOW *win;
bool flag;
{
win->_keypad = flag;
} /* keypad */

/****************************************************************/
/* Meta() allows use of any alternate character set allowed by */
/* the terminal. We always allow this on the PC, so this one */
/* does nothing. */
/****************************************************************/

void meta()
{
} /* meta */

/****************************************************************/
/* Cursoff() turns off the hardware cursor. */
/****************************************************************/

void cursoff()
{
if (!hasold)
{
oldmode = _cursesgcmode(); /* get old cursor type */
hasold = TRUE;
}
_cursescmode(31,30); /* turn it off */
} /* cursoff */

/****************************************************************/
/* Curson() turns on the hardware cursor. */
/****************************************************************/

void curson()
{
if (hasold)
{
_cursescmode(oldmode >> 8,oldmode);
hasold = FALSE;
}
} /* curson */