125 lines
2.7 KiB
C
125 lines
2.7 KiB
C
|
|
/* This work is copyrighted. See COPYRIGHT.OLD & COPYRIGHT.NEW for *
|
|
* details. If they are missing then this copy is in violation of *
|
|
* the copyright conditions. */
|
|
|
|
/*
|
|
** lib_insdel.c
|
|
**
|
|
** The routine winsdel(win, n).
|
|
** positive n insert n lines above current line
|
|
** negative n delete n lines starting from current line
|
|
**
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include "curses.priv.h"
|
|
#include <nterm.h>
|
|
|
|
int
|
|
winsdel(WINDOW *win, int n)
|
|
{
|
|
int line, i;
|
|
int touched = 0;
|
|
chtype *ptr, *temp;
|
|
chtype **saved;
|
|
chtype blank = ' ';
|
|
|
|
T(("winsdel(%x,%d) called", win, n));
|
|
|
|
if (n == 0)
|
|
return OK;
|
|
if (n < 0 && win->_cury - n >= win->_maxy)
|
|
/* request to delete too many lines */
|
|
/* should we truncate to an appropriate number? */
|
|
return ERR;
|
|
|
|
|
|
saved = (chtype **)malloc(sizeof(chtype *) * abs(n));
|
|
|
|
if (n < 0) {
|
|
/* save overwritten lines */
|
|
|
|
for (i = 0; i < -n; i++)
|
|
saved[i] = win->_line[win->_regbottom-i];
|
|
|
|
/* delete n lines */
|
|
|
|
for (line = win->_regbottom; line >= win->_cury; line--)
|
|
win->_line[line] = win->_line[line+n];
|
|
|
|
/* restore saved lines and blank them */
|
|
|
|
for (i = 0, line = win->_regtop; line < win->_regtop-n; line++, i++) {
|
|
win->_line[line] = saved[i];
|
|
temp = win->_line[line];
|
|
for (ptr = temp; ptr - temp <= win->_maxx; ptr++)
|
|
*ptr = blank;
|
|
}
|
|
}
|
|
|
|
if (n > 0) {
|
|
/* save overwritten lines */
|
|
|
|
for (i = 0; i < n; i++)
|
|
saved[i] = win->_line[win->_regtop+i];
|
|
|
|
/* insert n lines */
|
|
|
|
for (line = win->_regtop; line < win->_regtop + n; line++)
|
|
win->_line[line] = win->_line[line+n];
|
|
|
|
/* restore saved lines and blank them */
|
|
|
|
for (i = 0, line = win->_regtop + n; i < n; line--, i++) {
|
|
temp = win->_line[line] = saved[i];
|
|
for (ptr = temp; ptr - temp <= win->_maxx; ptr++)
|
|
*ptr = blank;
|
|
}
|
|
}
|
|
|
|
free(saved);
|
|
|
|
/* as an optimization, if the window is COLS wide we can try
|
|
using idl assuming _idlok is true */
|
|
|
|
if (win->_maxx == columns && win->_idlok == TRUE) {
|
|
|
|
if (back_color_erase) {
|
|
T(("back_color_erase, turning attributes off"));
|
|
vidattr(curscr->_attrs = A_NORMAL);
|
|
}
|
|
if (n > 0) {
|
|
mvcur(-1, -1, win->_cury, 0);
|
|
if (parm_insert_line) {
|
|
putp(tparm(parm_insert_line, n));
|
|
touched = 1;
|
|
} else if (insert_line) {
|
|
while (n--)
|
|
putp(insert_line);
|
|
touched = 1;
|
|
}
|
|
}
|
|
|
|
if (n < 0) {
|
|
mvcur(-1, -1, win->_cury, 0);
|
|
n = abs(n);
|
|
if (parm_delete_line) {
|
|
putp(tparm(parm_delete_line, n));
|
|
touched = 1;
|
|
} else if (delete_line) {
|
|
while (n--)
|
|
putp(delete_line);
|
|
touched = 1;
|
|
}
|
|
}
|
|
|
|
mvcur(-1, -1, win->_cury, win->_curx);
|
|
}
|
|
if (touched == 0)
|
|
touchline(win, win->_regtop, win->_regbottom - win->_regtop + 1);
|
|
touched = 0;
|
|
|
|
return OK;
|
|
}
|