int werase(WINDOW *win)
{
int code = ERR;
int y;
chtype blank;
chtype *sp, *end, *start;
T((T_CALLED("werase(%p)"), win));
if (win) {
blank = _nc_background(win);
for (y = 0; y <= win->_maxy; y++) {
start = win->_line[y].text;
end = &start[win->_maxx];
for (sp = start; sp <= end; sp++)
*sp = blank;
win->_line[y].firstchar = 0;
win->_line[y].lastchar = win->_maxx;
}
win->_curx = win->_cury = 0;
win->_flags &= ~_WRAPPED;
_nc_synchook(win);
code = OK;
}
returnCode(code);
}
int wclrtobot(WINDOW *win)
{
int code = ERR;
T((T_CALLED("wclrtobot(%p)"), win));
if (win) {
short y;
short startx = win->_curx;
chtype blank = _nc_background(win);
T(("clearing from y = %d to y = %d with maxx = %d", win->_cury, win->_maxy, win->_maxx));
for (y = win->_cury; y <= win->_maxy; y++) {
struct ldat *line = &(win->_line[y]);
chtype *ptr = &(line->text[startx]);
chtype *end = &(line->text[win->_maxx]);
CHANGED_TO_EOL(line, startx, win->_maxx);
while (ptr <= end)
*ptr++ = blank;
startx = 0;
}
_nc_synchook(win);
code = OK;
}
returnCode(code);
}
int wclrtobot(WINDOW *win)
{
int code = ERR;
chtype blank;
chtype *ptr, *end;
short y, startx;
T((T_CALLED("wclrtobot(%p)"), win));
if (win) {
startx = win->_curx;
T(("clearing from y = %d to y = %d with maxx = %d", win->_cury, win->_maxy, win->_maxx));
for (y = win->_cury; y <= win->_maxy; y++) {
end = &win->_line[y].text[win->_maxx];
blank = _nc_background(win);
for (ptr = &win->_line[y].text[startx]; ptr <= end; ptr++)
*ptr = blank;
if (win->_line[y].firstchar > startx
|| win->_line[y].firstchar == _NOCHANGE)
win->_line[y].firstchar = startx;
win->_line[y].lastchar = win->_maxx;
startx = 0;
}
_nc_synchook(win);
code = OK;
}
returnCode(code);
}
int wclrtoeol(WINDOW *win)
{
int code = ERR;
chtype blank;
chtype *ptr, *end;
short y, x;
T((T_CALLED("wclrtoeol(%p)"), win));
if (win) {
y = win->_cury;
x = win->_curx;
/*
* If we have just wrapped the cursor, the clear applies to the new
* line, unless we are at the lower right corner.
*/
if (win->_flags & _WRAPPED
&& y < win->_maxy) {
win->_flags &= ~_WRAPPED;
}
/*
* There's no point in clearing if we're not on a legal position,
* either.
*/
if (win->_flags & _WRAPPED
|| y > win->_maxy
|| x > win->_maxx)
returnCode(ERR);
blank = _nc_background(win);
end = &win->_line[y].text[win->_maxx];
for (ptr = &win->_line[y].text[x]; ptr <= end; ptr++)
*ptr = blank;
if (win->_line[y].firstchar > win->_curx
|| win->_line[y].firstchar == _NOCHANGE)
win->_line[y].firstchar = win->_curx;
win->_line[y].lastchar = win->_maxx;
_nc_synchook(win);
code = OK;
}
returnCode(code);
}
int
winsdelln(WINDOW *win, int n)
{
int code = ERR;
T((T_CALLED("winsdel(%p,%d)"), win, n));
if (win) {
if (n != 0) {
_nc_scroll_window(win, -n, win->_cury, win->_maxy, _nc_background(win));
_nc_synchook(win);
}
code = OK;
}
returnCode(code);
}
int
wresize(WINDOW *win, int ToLines, int ToCols)
{
register int row;
int size_x, size_y;
struct ldat *pline;
chtype blank;
#ifdef TRACE
T((T_CALLED("wresize(%p,%d,%d)"), win, ToLines, ToCols));
if (win) {
TR(TRACE_UPDATE, ("...beg (%d, %d), max(%d,%d), reg(%d,%d)",
win->_begy, win->_begx,
win->_maxy, win->_maxx,
win->_regtop, win->_regbottom));
if (_nc_tracing & TRACE_UPDATE)
_tracedump("...before", win);
}
#endif
if (!win || --ToLines < 0 || --ToCols < 0)
returnCode(ERR);
size_x = win->_maxx;
size_y = win->_maxy;
if (ToLines == size_y
&& ToCols == size_x)
returnCode(OK);
pline = (win->_flags & _SUBWIN) ? win->_parent->_line : 0;
/*
* If the number of lines has changed, adjust the size of the overall
* vector:
*/
if (ToLines != size_y) {
if (! (win->_flags & _SUBWIN)) {
for (row = ToLines+1; row <= size_y; row++)
free((char *)(win->_line[row].text));
}
win->_line = ld_ALLOC(win->_line, ToLines+1);
if (win->_line == 0)
returnCode(ERR);
for (row = size_y+1; row <= ToLines; row++) {
win->_line[row].text = 0;
win->_line[row].firstchar = 0;
win->_line[row].lastchar = ToCols;
if ((win->_flags & _SUBWIN)) {
win->_line[row].text =
&pline[win->_begy + row].text[win->_begx];
}
}
}
/*
* Adjust the width of the columns:
*/
blank = _nc_background(win);
for (row = 0; row <= ToLines; row++) {
chtype *s = win->_line[row].text;
int begin = (s == 0) ? 0 : size_x + 1;
int end = ToCols;
if_USE_SCROLL_HINTS(win->_line[row].oldindex = row);
if (ToCols != size_x || s == 0) {
if (! (win->_flags & _SUBWIN)) {
win->_line[row].text = s = c_ALLOC(s, ToCols+1);
if (win->_line[row].text == 0)
returnCode(ERR);
} else if (s == 0) {
win->_line[row].text = s =
&pline[win->_begy + row].text[win->_begx];
}
if (end >= begin) { /* growing */
if (win->_line[row].firstchar < begin)
win->_line[row].firstchar = begin;
win->_line[row].lastchar = ToCols;
do {
s[end] = blank;
} while (--end >= begin);
} else { /* shrinking */
win->_line[row].firstchar = 0;
win->_line[row].lastchar = ToCols;
}
}
}
/*
* Finally, adjust the parameters showing screen size and cursor
* position:
*/
win->_maxx = ToCols;
win->_maxy = ToLines;
if (win->_regtop > win->_maxy)
win->_regtop = win->_maxy;
if (win->_regbottom > win->_maxy
|| win->_regbottom == size_y)
win->_regbottom = win->_maxy;
if (win->_curx > win->_maxx)
win->_curx = win->_maxx;
if (win->_cury > win->_maxy)
win->_cury = win->_maxy;
#ifdef TRACE
TR(TRACE_UPDATE, ("...beg (%d, %d), max(%d,%d), reg(%d,%d)",
win->_begy, win->_begx,
win->_maxy, win->_maxx,
win->_regtop, win->_regbottom));
if (_nc_tracing & TRACE_UPDATE)
_tracedump("...after:", win);
#endif
returnCode(OK);
}
