ncurses 5.0

[ncurses.git] / ncurses / base / lib_touch.c

diff --git a/ncurses/base/lib_touch.c b/ncurses/base/lib_touch.c
new file mode 100644 (file)
index 0000000..7ce863d
--- /dev/null
+++ b/ncurses/base/lib_touch.c
@@ -0,0 +1,87 @@
+/****************************************************************************
+ * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
+ *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ ****************************************************************************/
+
+/*
+**     lib_touch.c
+**
+**        The routines untouchwin(),
+**                     wtouchln(),
+**                     is_linetouched()
+**                     is_wintouched().
+**
+*/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_touch.c,v 1.6 1998/04/11 22:55:02 tom Exp $")
+
+bool is_linetouched(WINDOW *win, int line)
+{
+       T((T_CALLED("is_linetouched(%p,%d)"), win, line));
+
+       /* XSI doesn't define any error */
+       if (!win || (line > win->_maxy) || (line < 0))
+               returnCode(ERR);
+
+       returnCode(win->_line[line].firstchar != _NOCHANGE ? TRUE : FALSE);
+}
+
+bool is_wintouched(WINDOW *win)
+{
+int i;
+
+       T((T_CALLED("is_wintouched(%p)"), win));
+
+       if (win)
+               for (i = 0; i <= win->_maxy; i++)
+                       if (win->_line[i].firstchar != _NOCHANGE)
+                               returnCode(TRUE);
+       returnCode(FALSE);
+}
+
+int wtouchln(WINDOW *win, int y, int n, int changed)
+{
+int i;
+
+       T((T_CALLED("wtouchln(%p,%d,%d,%d)"), win, y, n, changed));
+
+       if (!win || (n<0) || (y<0) || (y>win->_maxy))
+         returnCode(ERR);
+
+       for (i = y; i < y+n; i++) {
+               if (i>win->_maxy) break;
+               win->_line[i].firstchar = changed ? 0 : _NOCHANGE;
+               win->_line[i].lastchar = changed ? win->_maxx : _NOCHANGE;
+       }
+       returnCode(OK);
+}