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authorPeter Wemm <peter@FreeBSD.org>1999-08-24 01:06:48 +0000
committerPeter Wemm <peter@FreeBSD.org>1999-08-24 01:06:48 +0000
commit0e3d540892016a47f6a68ec9ba2879d35ce5f7c2 (patch)
treead214c5b2c8142ad6dc6d2ce3a9c83e6317d7f77 /contrib/ncurses/ncurses/base/resizeterm.c
downloadsrc-0e3d540892016a47f6a68ec9ba2879d35ce5f7c2.tar.gz
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Import unmodified (but trimmed) ncurses 5.0 prerelease 990821.vendor/ncurses/5.0-19990821
This contains the full eti (panel, form, menu) extensions. bmake glue to follow. Obtained from: ftp://ftp.clark.net/pub/dickey/ncurses
Notes
Notes: svn path=/vendor/ncurses/dist/; revision=50276 svn path=/vendor/ncurses/5.0-19990821/; revision=50278; tag=vendor/ncurses/5.0-19990821
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+/****************************************************************************
+ * 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: Thomas E. Dickey <dickey@clark.net> 1996,1997 *
+ ****************************************************************************/
+
+/*
+ * This is an extension to the curses library. It provides callers with a hook
+ * into the NCURSES data to resize windows, primarily for use by programs
+ * running in an X Window terminal (e.g., xterm). I abstracted this module
+ * from my application library for NCURSES because it must be compiled with
+ * the private data structures -- T.Dickey 1995/7/4.
+ */
+
+#include <curses.priv.h>
+#include <term.h>
+
+MODULE_ID("$Id: resizeterm.c,v 1.7 1998/09/19 19:27:43 Alexander.V.Lukyanov Exp $")
+
+/*
+ * This function reallocates NCURSES window structures. It is invoked in
+ * response to a SIGWINCH interrupt. Other user-defined windows may also need
+ * to be reallocated.
+ *
+ * Because this performs memory allocation, it should not (in general) be
+ * invoked directly from the signal handler.
+ */
+int
+resizeterm(int ToLines, int ToCols)
+{
+ int stolen = screen_lines - SP->_lines_avail;
+ int bottom = screen_lines + SP->_topstolen - stolen;
+
+ T((T_CALLED("resizeterm(%d,%d) old(%d,%d)"),
+ ToLines, ToCols,
+ screen_lines, screen_columns));
+
+ SP->_sig_winch = FALSE;
+
+ if (ToLines != screen_lines
+ || ToCols != screen_columns) {
+ WINDOWLIST *wp;
+
+#if USE_SIGWINCH
+ ungetch(KEY_RESIZE); /* so application can know this */
+ clearok(curscr, TRUE); /* screen contents are unknown */
+#endif
+
+ for (wp = _nc_windows; wp != 0; wp = wp->next) {
+ WINDOW *win = wp->win;
+ int myLines = win->_maxy + 1;
+ int myCols = win->_maxx + 1;
+
+ /* pads aren't treated this way */
+ if (win->_flags & _ISPAD)
+ continue;
+
+ if (win->_begy >= bottom) {
+ win->_begy += (ToLines - screen_lines);
+ } else {
+ if (myLines == screen_lines - stolen
+ && ToLines != screen_lines)
+ myLines = ToLines - stolen;
+ else
+ if (myLines == screen_lines
+ && ToLines != screen_lines)
+ myLines = ToLines;
+ }
+
+ if (myCols == screen_columns
+ && ToCols != screen_columns)
+ myCols = ToCols;
+
+ if (wresize(win, myLines, myCols) != OK)
+ returnCode(ERR);
+ }
+
+ screen_lines = lines = ToLines;
+ screen_columns = columns = ToCols;
+
+ SP->_lines_avail = lines - stolen;
+
+ if (SP->oldhash) { FreeAndNull(SP->oldhash); }
+ if (SP->newhash) { FreeAndNull(SP->newhash); }
+ }
+
+ /*
+ * Always update LINES, to allow for call from lib_doupdate.c which
+ * needs to have the count adjusted by the stolen (ripped off) lines.
+ */
+ LINES = ToLines - stolen;
+ COLS = ToCols;
+
+ returnCode(OK);
+}