1 files changed, 65 insertions, 0 deletions
diff --git a/lib/libcurses/id_subwins.c b/lib/libcurses/id_subwins.c
new file mode 100644
index 0000000..6dc715c
--- /dev/null
+++ b/lib/libcurses/id_subwins.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 1981, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)id_subwins.c	8.1 (Berkeley) 6/4/93";
+#endif	/* not lint */
+
+#include <curses.h>
+
+/*
+ * __id_subwins --
+ *	Re-sync the pointers to lines for all the subwindows.
+ */
+void
+__id_subwins(orig)
+	register WINDOW *orig;
+{
+	register WINDOW *win;
+	register int oy, realy, y;
+
+	realy = orig->begy + orig->cury;
+	for (win = orig->nextp; win != orig; win = win->nextp) {
+		/*
+		 * If the window ends before our current position, don't need
+		 * to do anything.
+		 */
+		if (win->begy + win->maxy <= realy)
+			continue;
+
+		oy = orig->cury;
+		for (y = realy - win->begy; y < win->maxy; y++, oy++)
+			win->lines[y]->line = 
+				&orig->lines[oy]->line[win->ch_off];
+	}
+}