1 files changed, 48 insertions, 0 deletions

diff --git a/lib/libncurses/lib_touch.c b/lib/libncurses/lib_touch.c
new file mode 100644
index 000000000000..4d291b3f33c1
--- /dev/null
+++ b/lib/libncurses/lib_touch.c
@@ -0,0 +1,48 @@
+
+/* 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_touch.c
+**
+**	   The routines	untouchwin(),
+**			wtouchln(),
+**			is_linetouched()
+**			is_wintouched().
+**
+*/
+
+#include "curses.priv.h"
+
+int is_linetouched(WINDOW *win, int line)
+{
+	if (line > win->_maxy || line < 0)
+		return ERR;
+	if (win->_firstchar[line] != _NOCHANGE) return TRUE;
+	return FALSE;
+}
+
+int is_wintouched(WINDOW *win)
+{
+int i;
+
+	for (i = 0; i <= win->_maxy; i++)
+		if (win->_firstchar[i] != _NOCHANGE)
+			return TRUE;
+	return FALSE;
+}
+
+int wtouchln(WINDOW *win, int y, int n, int changed)
+{
+int i;
+
+	T(("wtouchln(%x,%d,%d,%d)", win, y, n, changed));
+
+	for (i = y; i < y+n; i++) {
+		win->_firstchar[i] = changed ? 0 : _NOCHANGE;
+		win->_lastchar[i] = changed ? win->_maxx : _NOCHANGE;
+	}
+	return OK;
+}
+