nuttx-apps/graphics/twm4nx/COPYING
Gregory Nutt 950b4cb604 wm4Nx is a port of twm, Tab Window Manager (or Tom's Window Manager)
version 1.0.10 to NuttX NX windows server.  No, a port is not the right
word.  It is a re-design of TWM from the inside out to work with the NuttX
NX server.  The name Twm4Nx reflects this legacy.  But Twm4Nx is more a
homage to TWM than a port of TWM.

The original TWM was based on X11 which provides a rich set of features.
TWM provided titlebars, shaped windows, several forms of icon management,
user-defined macro functions, click-to-type and pointer-driven keyboard
focus, graphic contexts, and user-specified key and pointer button bindings,
etc.

Twm4Nx, on the other hand is based on the NuttX NX server which provides
comparatively minimal support.  Additional drawing support comes from
the NuttX NxWidgets library (which necessitated the change to C++).

Twm4Nx is greatly stripped down and targeted on small embedded systems
with minimal resources.  For example, no assumption is made about the
availability of a file system; no .twmrc file is used.  Bitmaps are not
used (other than for fonts).

The TWM license is, I believe compatible with the BSD license used by NuttX.
The origin TWM license required notice of copyrights within each file and
a full copy of the original license which you can find in the COPYING file.
within this directory.

STATUS:

This port was brutal.  Much TWM logic was removed because it depending on X11 features (or just because I could not understand how to use it).  The logic is partial.  A lot more needs to be done to have a complete system (hence, it is marked EXPERIMENTAL).  The kinds of things that need to done are:

1. Update some logic that is only fragmentary for how like resizing, and menus.
2. Integrate NxWidgets into the windows:  The resize menu needs a CLabel, the menus are CListBox'es, but not completely integrated, the Icon Manager needs to be a button array.
3. Resit Icons.  They are windows now, but need to be compound widgets lying on the background.
4. Widget events are only partially integrated.  A lot more needs to be done.  A partial change to thoe event system that hints at the redesign is in place but it is far from complete.
2019-04-25 16:54:17 -06:00

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The following is the full text of the COPYING file for TWM 1.0.10. Twm4Nx
is largely an original development, but owes acknowledge to TWM for its
design base and thanks fot TWM for many years in the open source community.
This copyright notice is probably not necessary since Twm4Nx is not TWM,
but this assures that things are right. See the top-level README.txt file
for additional information.
============================================================================
Copyright 1989, 1994, 1998 The Open Group
Copyright 2005 Hitachi, Ltd.
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.
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
OPEN GROUP 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 of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
Copyright 1988 by Evans & Sutherland Computer Corporation,
Salt Lake City, Utah
Cambridge, Massachusetts
All Rights Reserved
Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that copyright notice and this permis-
sion notice appear in supporting documentation, and that the
name of Evans & Sutherland not be used in advertising
in publicity pertaining to distribution of the software without
specific, written prior permission.
EVANS & SUTHERLAND DISCLAIMs ALL WARRANTIES WITH REGARD
TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
ABILITY AND FITNESS, IN NO EVENT SHALL EVANS & SUTHERLAND
BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAM-
AGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE
OR PERFORMANCE OF THIS SOFTWARE.
Copyright (C) 1998 The XFree86 Project, Inc. All Rights Reserved.
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, 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
XFREE86 PROJECT 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 of the XFree86 Project shall
not be used in advertising or otherwise to promote the sale, use or other
dealings in this Software without prior written authorization from the
XFree86 Project.