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-rw-r--r--ncurses/base/lib_touch.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/ncurses/base/lib_touch.c b/ncurses/base/lib_touch.c
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+/****************************************************************************
+ * Copyright (c) 1998,2000 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 1.9 2000/12/10 02:43:27 tom Exp $")
+
+NCURSES_EXPORT(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((bool) ERR);
+
+ returnCode(win->_line[line].firstchar != _NOCHANGE ? TRUE : FALSE);
+}
+
+NCURSES_EXPORT(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);
+}
+
+NCURSES_EXPORT(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);
+}