mvcur(int yold, int xold, int ynew, int xnew)
/* optimized cursor move from (yold, xold) to (ynew, xnew) */
{
NCURSES_CH_T oldattr;
int code;
TR(TRACE_CALLS | TRACE_MOVE, (T_CALLED("mvcur(%d,%d,%d,%d)"),
yold, xold, ynew, xnew));
if (SP == 0) {
code = ERR;
} else if (yold == ynew && xold == xnew) {
code = OK;
} else {
/*
* Most work here is rounding for terminal boundaries getting the
* column position implied by wraparound or the lack thereof and
* rolling up the screen to get ynew on the screen.
*/
if (xnew >= screen_columns) {
ynew += xnew / screen_columns;
xnew %= screen_columns;
}
/*
* Force restore even if msgr is on when we're in an alternate
* character set -- these have a strong tendency to screw up the CR &
* LF used for local character motions!
*/
oldattr = SCREEN_ATTRS(SP);
if ((AttrOf(oldattr) & A_ALTCHARSET)
|| (AttrOf(oldattr) && !move_standout_mode)) {
TR(TRACE_CHARPUT, ("turning off (%#lx) %s before move",
(unsigned long) AttrOf(oldattr),
_traceattr(AttrOf(oldattr))));
(void) VIDATTR(A_NORMAL, 0);
}
if (xold >= screen_columns) {
int l;
if (SP->_nl) {
l = (xold + 1) / screen_columns;
yold += l;
if (yold >= screen_lines)
l -= (yold - screen_lines - 1);
if (l > 0) {
if (carriage_return) {
TPUTS_TRACE("carriage_return");
putp(carriage_return);
} else
_nc_outch('\r');
xold = 0;
while (l > 0) {
if (newline) {
TPUTS_TRACE("newline");
putp(newline);
} else
_nc_outch('\n');
l--;
}
}
} else {
/*
* If caller set nonl(), we cannot really use newlines to
* position to the next row.
*/
xold = -1;
yold = -1;
}
}
if (yold > screen_lines - 1)
yold = screen_lines - 1;
if (ynew > screen_lines - 1)
ynew = screen_lines - 1;
/* destination location is on screen now */
code = onscreen_mvcur(yold, xold, ynew, xnew, TRUE);
/*
* Restore attributes if we disabled them before moving.
*/
if (!SameAttrOf(oldattr, SCREEN_ATTRS(SP))) {
TR(TRACE_CHARPUT, ("turning on (%#lx) %s after move",
(unsigned long) AttrOf(oldattr),
_traceattr(AttrOf(oldattr))));
(void) VIDATTR(AttrOf(oldattr), GetPair(oldattr));
}
}
returnCode(code);
}
mvcur(int yold, int xold, int ynew, int xnew)
/* optimized cursor move from (yold, xold) to (ynew, xnew) */
{
TR(TRACE_CALLS | TRACE_MOVE, (T_CALLED("mvcur(%d,%d,%d,%d)"),
yold, xold, ynew, xnew));
if (SP == 0)
returnCode(ERR);
if (yold == ynew && xold == xnew)
returnCode(OK);
/*
* Most work here is rounding for terminal boundaries getting the
* column position implied by wraparound or the lack thereof and
* rolling up the screen to get ynew on the screen.
*/
if (xnew >= screen_columns) {
ynew += xnew / screen_columns;
xnew %= screen_columns;
}
if (xold >= screen_columns) {
int l;
if (SP->_nl) {
l = (xold + 1) / screen_columns;
yold += l;
if (yold >= screen_lines)
l -= (yold - screen_lines - 1);
while (l > 0) {
if (newline) {
TPUTS_TRACE("newline");
tputs(newline, 0, _nc_outch);
} else
putchar('\n');
l--;
if (xold > 0) {
if (carriage_return) {
TPUTS_TRACE("carriage_return");
tputs(carriage_return, 0, _nc_outch);
} else
putchar('\r');
xold = 0;
}
}
} else {
/*
* If caller set nonl(), we cannot really use newlines to position
* to the next row.
*/
xold = -1;
yold = -1;
}
}
if (yold > screen_lines - 1)
yold = screen_lines - 1;
if (ynew > screen_lines - 1)
ynew = screen_lines - 1;
/* destination location is on screen now */
returnCode(onscreen_mvcur(yold, xold, ynew, xnew, TRUE));
}