source: trunk/doc/src/3rdparty.qdoc@ 337

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

/*!
    \page 3rdparty.html

    \title Third-Party Licenses Used in Qt
    \ingroup licensing
    \brief License information for third-party libraries supplied with Qt.

    Qt includes a number of third-party libraries that are used to provide
    certain features. Unlike the code described in the
    \l{Other Licenses Used in Qt}{code used in Qt} document, these
    libraries are supplied alongside the Qt modules.

    Third Party Software may impose additional restrictions and it is the
    user's responsibility to ensure that they have met the licensing
    requirements of the GPL, LGPL, or Qt Commercial license and the relevant
    license of the Third Party Software they are using.

    Run \c{configure -help} to see any options that may be available for
    controlling the use of these libraries.

    \tableofcontents

    \section1 FreeType 2 (\c freetype) version 2.3.6

    \e{The FreeType project is a team of volunteers who develop free, portable
    and high-quality software solutions for digital typography. We specifically
    target embedded systems and focus on bringing small, efficient and
    ubiquitous products.} -- quoted from \c 3rdparty/freetype/docs/freetype2.html.

    See \c src/3rdparty/freetype/docs/FTL.txt and \c
    src/3rdparty/freetype/docs/GPL.txt for license details.

    See also the files in \c src/3rdparty/harfbuzz, which are used by
    FreeType.

    Parts of the FreeType projects have been modified and put into Qt
    for use in the painting subsystem. These files are ftraster.h,
    ftraster.c, ftgrays.h and ftgrays.c. The following modifications
    has been made to these files:

    \list
    \i Renamed FT_ and ft_ symbols to QT_FT_ and qt_ft_ to avoid name
    conflicts.
    \i Removed parts of code not relevant when compiled with
    _STANDALONE_ defined.
    \i Changed behavior in ftraster.c to follow X polygon filling
    rules.
    \i Implemented support in ftraster.c for winding / odd even
    polygon fill rules.
    \i Replaced bitmap generation with span generation in ftraster.c
    \i Renamed: ftraster.h to qblackraster_p.h
    \i Renamed: ftraster.c to qblackraster.c
    \i Renamed: ftgrays.h to qgrayraster_p.h
    \i Renamed: ftgrays.c to qgrayraster.c
    \endlist

    \section1 HarfBuzz (\c harfbuzz)

    \e{This is HarfBuzz, an OpenType Layout engine.}

    \e{It was derived originally from the OpenType code in FreeType-1.x, ported to
    FreeType2.  (This code has been abandoned for FreeType2, but until something
    better comes along, should serve our purposes.) In addition to porting to
    FreeType-2, it has been modified in various other ways.} -- quoted from
    \c src/3rdparty/harfbuzz/README.

    See \c src/3rdparty/harfbuzz/COPYING.FTL and src/3rdparty/harfbuzz/COPYING.GPL
    for license details.

    \section1 MD5 (\c md5.cpp and \c md5.h)

    \e{This code implements the MD5 message-digest algorithm.
    The algorithm is due to Ron Rivest.  This code was
    written by Colin Plumb in 1993, no copyright is claimed.
    This code is in the public domain; do with it what you wish.} -- quoted from
    \c src/3rdparty/md5/md5.h

    See \c src/3rdparty/md5/md5.cpp and \c src/3rdparty/md5/md5.h for more
    information about the terms and conditions under which the code is
    supplied.

    \section1 The Independent JPEG Group's JPEG Software (\c libjpeg) version 6b

    \e{This package contains C software to implement JPEG image compression and
    decompression.  JPEG (pronounced "jay-peg") is a standardized compression
    method for full-color and gray-scale images.  JPEG is intended for compressing
    "real-world" scenes; line drawings, cartoons and other non-realistic images
    are not its strong suit.  JPEG is lossy, meaning that the output image is not
    exactly identical to the input image.} -- quoted from \c
    src/3rdparty/libjpeg/README.

    See \c src/3rdparty/libjpeg/README for license details.

    \section1 MNG Library (\c libmng) version 1.0.10

    \e{The libmng library supports decoding, displaying, encoding, and various
    other manipulations of the Multiple-image Network Graphics (MNG) format
    image files. It uses the zlib compression library, and optionally the
    JPEG library by the Independant JPEG Group (IJG) and/or
    lcms (little cms), a color-management library by Marti Maria Saguer.}
    -- quoted from \c src/3rdparty/libmng/doc/libmng.txt

    See \c src/3rdparty/libmng/LICENSE for license details.

    \section1 PNG Reference Library (\c libpng) version 1.2.29

    \e{Libpng was written as a companion to the PNG specification, as a way
    of reducing the amount of time and effort it takes to support the PNG
    file format in application programs.} -- quoted from \c
    src/3rdparty/libpng/libpng.txt.

    See \c src/3rdparty/libpng/LICENSE for license details.

    \section1 TIFF Software Distribution (\c libtiff) version 3.8.2

    \e {libtiff is a set of C functions (a library) that support the
    manipulation of TIFF image files.} -- quoted from \c
    src/libtiff/html/libtiff.html

    \hr

    Copyright (c) 1988-1997 Sam Leffler\br
    Copyright (c) 1991-1997 Silicon Graphics, Inc.\br
    Copyright (C) 2004, Andrey Kiselev <dron@ak4719.spb.edu>\br
    Copyright (c) 1997 Greg Ward Larson

    Permission to use, copy, modify, distribute, and sell this software and 
    its documentation for any purpose is hereby granted without fee, provided
    that (i) the above copyright notices and this permission notice appear in
    all copies of the software and related documentation, and (ii) the names of
    Sam Leffler and Silicon Graphics may not be used in any advertising or
    publicity relating to the software without the specific, prior written
    permission of Sam Leffler and Silicon Graphics.

    THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
    EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
    WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  

    IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
    ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
    OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
    WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
    LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
    OF THIS SOFTWARE.

    \hr

    Copyright (c) 1996-1997 Sam Leffler\br
    Copyright (c) 1996 Pixar

    Permission to use, copy, modify, distribute, and sell this software and 
    its documentation for any purpose is hereby granted without fee, provided
    that (i) the above copyright notices and this permission notice appear in
    all copies of the software and related documentation, and (ii) the names of
    Pixar, Sam Leffler and Silicon Graphics may not be used in any advertising or
    publicity relating to the software without the specific, prior written
    permission of Pixar, Sam Leffler and Silicon Graphics.

    THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
    EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
    WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  

    IN NO EVENT SHALL PIXAR, SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
    ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
    OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
    WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
    LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
    OF THIS SOFTWARE.

    \hr

    See \c src/3rdparty/libtiff/COPYRIGHT for license details.

    \section1 SQLite (\c sqlite) version 3.5.9

    \e{SQLite is a small C library that implements a
    self-contained, embeddable, zero-configuration SQL database engine.}
    -- quoted from \l{http://www.sqlite.org/}{www.sqlite.org}.

    According to the comments in the source files, the code is in the public
    domain. See the
    \l{http://www.sqlite.org/copyright.html}{SQLite Copyright} page on the
    SQLite web site for further information.

    \section1 Wintab API (\c wintab)

    Wintab is a de facto API for pointing devices on Windows. The
    wintab code is from \l{http://www.pointing.com/WINTAB.HTM}.

    See \c src/3rdparty/wintab/wintab.h for license details.

    \section1 Data Compression Library (\c zlib) version 1.2.3

    \e{zlib is a general purpose data compression library.  All the code
    is thread safe.  The data format used by the zlib library is described
    by RFCs (Request for Comments) 1950 to 1952} -- quoted from \c
    src/3rdparty/zlib/README.

    See \c src/3rdparty/zlib/README for license details.

    \section1 The ptmalloc memory allocator (\c ptmalloc3) version 1.8

    \e ptmcalloc3 is a scalable concurrent memory allocator suitable
    for use in multi-threaded programs.

    \hr

    Copyright (c) 2001-2006 Wolfram Gloger

    Permission to use, copy, modify, distribute, and sell this software
    and its documentation for any purpose is hereby granted without fee,
    provided that (i) the above copyright notices and this permission
    notice appear in all copies of the software and related documentation,
    and (ii) the name of Wolfram Gloger may not be used in any advertising
    or publicity relating to the software.

    THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
    EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
    WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

    IN NO EVENT SHALL WOLFRAM GLOGER BE LIABLE FOR ANY SPECIAL,
    INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY
    DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
    WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY
    OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
    PERFORMANCE OF THIS SOFTWARE.

    \hr

    See \c src/3rdparty/ptmalloc/COPYRIGHT for license details.
*/