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Diffstat (limited to 'lib/libcurses/lib_clrbot.c')
| -rw-r--r-- | lib/libcurses/lib_clrbot.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/lib/libcurses/lib_clrbot.c b/lib/libcurses/lib_clrbot.c new file mode 100644 index 00000000000..f7feca7ec5d --- /dev/null +++ b/lib/libcurses/lib_clrbot.c @@ -0,0 +1,72 @@ + +/*************************************************************************** +* COPYRIGHT NOTICE * +**************************************************************************** +* ncurses is copyright (C) 1992-1995 * +* Zeyd M. Ben-Halim * +* zmbenhal@netcom.com * +* Eric S. Raymond * +* esr@snark.thyrsus.com * +* * +* Permission is hereby granted to reproduce and distribute ncurses * +* by any means and for any fee, whether alone or as part of a * +* larger distribution, in source or in binary form, PROVIDED * +* this notice is included with any such distribution, and is not * +* removed from any of its header files. Mention of ncurses in any * +* applications linked with it is highly appreciated. * +* * +* ncurses comes AS IS with no warranty, implied or expressed. * +* * +***************************************************************************/ + +/* +** lib_clrbot.c +** +** The routine wclrtobot(). +** +*/ + +#include "curses.priv.h" + +int wclrtobot(WINDOW *win) +{ +chtype *ptr, *end, *maxx = NULL; +short y, startx, minx; + + T(("wclrtobot(%p) called", win)); + + startx = win->_curx; + if (win->_flags & _NEED_WRAP) + startx++; + + 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++) { + minx = _NOCHANGE; + end = &win->_line[y].text[win->_maxx]; + + for (ptr = &win->_line[y].text[startx]; ptr <= end; ptr++) { + int blank = _nc_render(win, *ptr, BLANK); + + if (*ptr != blank) { + maxx = ptr; + if (minx == _NOCHANGE) + minx = ptr - win->_line[y].text; + *ptr = blank; + } + } + + if (minx != _NOCHANGE) { + if (win->_line[y].firstchar > minx + || win->_line[y].firstchar == _NOCHANGE) + win->_line[y].firstchar = minx; + + if (win->_line[y].lastchar < maxx - win->_line[y].text) + win->_line[y].lastchar = maxx - win->_line[y].text; + } + + startx = 0; + } + _nc_synchook(win); + return OK; +} |