FreeType is a freely available software library to render fonts.
Used in Qt GUI.
The sources can be found in qtbase/src/gui/painting/qgrayraster.c.
Copyright 2000-2016 by David Turner, Robert Wilhelm, and Werner Lemberg.
Freetype Project License or GNU General Public License v2.0 only.
FREETYPE LICENSES-----------------The FreeType 2 font engine is copyrighted work and cannot be usedlegally without a software license. In order to make this projectusable to a vast majority of developers, we distribute it under twomutually exclusive open-source licenses.This means that *you* must choose *one* of the two licenses describedbelow, then obey all its terms and conditions when using FreeType 2 inany of your projects or products. - The FreeType License, found in the file `docs/FTL.TXT`, which is similar to the original BSD license *with* an advertising clause that forces you to explicitly cite the FreeType project in your product's documentation. All details are in the license file. This license is suited to products which don't use the GNU General Public License. Note that this license is compatible to the GNU General Public License version 3, but not version 2. - The GNU General Public License version 2, found in `docs/GPLv2.TXT` (any later version can be used also), for programs which already use the GPL. Note that the FTL is incompatible with GPLv2 due to its advertisement clause.The contributed BDF and PCF drivers come with a license similar tothat of the X Window System. It is compatible to the above twolicenses (see files `src/bdf/README` and `src/pcf/README`). The sameholds for the source code files `src/base/fthash.c` and`include/freetype/internal/fthash.h`; they wer part of the BDF driverin earlier FreeType versions.The gzip module uses the zlib license (see `src/gzip/zlib.h`) whichtoo is compatible to the above two licenses.The MD5 checksum support (only used for debugging in developmentbuilds) is in the public domain.-- FTL.TXT --The FreeType Project LICENSE---------------------------- 2006-Jan-27Copyright 1996-2002, 2006 byDavid Turner, Robert Wilhelm, and Werner LembergIntroduction============The FreeType Project is distributed in several archive packages;some of them may contain, in addition to the FreeType font engine,various tools and contributions which rely on, or relate to, theFreeType Project.This license applies to all files found in such packages, andwhich do not fall under their own explicit license. The licenseaffects thus the FreeType font engine, the test programs,documentation and makefiles, at the very least.This license was inspired by the BSD, Artistic, and IJG(Independent JPEG Group) licenses, which all encourage inclusionand use of free software in commercial and freeware productsalike. As a consequence, its main points are that:o We don't promise that this software works. However, we will beinterested in any kind of bug reports. (`as is' distribution)o You can use this software for whatever you want, in parts orfull form, without having to pay us. (`royalty-free' usage)o You may not pretend that you wrote this software. If you useit, or only parts of it, in a program, you must acknowledgesomewhere in your documentation that you have used theFreeType code. (`credits')We specifically permit and encourage the inclusion of thissoftware, with or without modifications, in commercial products.We disclaim all warranties covering The FreeType Project andassume no liability related to The FreeType Project.Finally, many people asked us for a preferred form for acredit/disclaimer to use in compliance with this license. We thusencourage you to use the following text:"""Portions of this software are copyright © <year> The FreeTypeProject (www.freetype.org). All rights reserved."""Please replace <year> with the value from the FreeType version youactually use.Legal Terms===========0. Definitions--------------Throughout this license, the terms `package', `FreeType Project',and `FreeType archive' refer to the set of files originallydistributed by the authors (David Turner, Robert Wilhelm, andWerner Lemberg) as the `FreeType Project', be they named as alpha,beta or final release.`You' refers to the licensee, or person using the project, where`using' is a generic term including compiling the project's sourcecode as well as linking it to form a `program' or `executable'.This program is referred to as `a program using the FreeTypeengine'.This license applies to all files distributed in the originalFreeType Project, including all source code, binaries anddocumentation, unless otherwise stated in the file in itsoriginal, unmodified form as distributed in the original archive.If you are unsure whether or not a particular file is covered bythis license, you must contact us to verify this.The FreeType Project is copyright (C) 1996-2000 by David Turner,Robert Wilhelm, and Werner Lemberg. All rights reserved except asspecified below.1. No Warranty--------------THE FREETYPE PROJECT IS PROVIDED `AS IS' WITHOUT WARRANTY OF ANYKIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULARPURPOSE. IN NO EVENT WILL ANY OF THE AUTHORS OR COPYRIGHT HOLDERSBE LIABLE FOR ANY DAMAGES CAUSED BY THE USE OR THE INABILITY TOUSE, OF THE FREETYPE PROJECT.2. Redistribution-----------------This license grants a worldwide, royalty-free, perpetual andirrevocable right and license to use, execute, perform, compile,display, copy, create derivative works of, distribute andsublicense the FreeType Project (in both source and object codeforms) and derivative works thereof for any purpose; and toauthorize others to exercise some or all of the rights grantedherein, subject to the following conditions:o Redistribution of source code must retain this license file(`FTL.TXT') unaltered; any additions, deletions or changes tothe original files must be clearly indicated in accompanyingdocumentation. The copyright notices of the unaltered,original files must be preserved in all copies of sourcefiles.o Redistribution in binary form must provide a disclaimer thatstates that the software is based in part of the work of theFreeType Team, in the distribution documentation. We alsoencourage you to put an URL to the FreeType web page in yourdocumentation, though this isn't mandatory.These conditions apply to any software derived from or based onthe FreeType Project, not just the unmodified files. If you useour work, you must acknowledge us. However, no fee need be paidto us.3. Advertising--------------Neither the FreeType authors and contributors nor you shall usethe name of the other for commercial, advertising, or promotionalpurposes without specific prior written permission.We suggest, but do not require, that you use one or more of thefollowing phrases to refer to this software in your documentationor advertising materials: `FreeType Project', `FreeType Engine',`FreeType library', or `FreeType Distribution'.As you have not signed this license, you are not required toaccept it. However, as the FreeType Project is copyrightedmaterial, only this license, or another one contracted with theauthors, grants you the right to use, distribute, and modify it.Therefore, by using, distributing, or modifying the FreeTypeProject, you indicate that you understand and accept all the termsof this license.4. Contacts-----------There are two mailing lists related to FreeType:o freetype@nongnu.orgDiscusses general use and applications of FreeType, as well asfuture and wanted additions to the library and distribution.If you are looking for support, start in this list if youhaven't found anything to help you in the documentation.o freetype-devel@nongnu.orgDiscusses bugs, as well as engine internals, design issues,specific licenses, porting, etc.Our home page can be found athttps://www.freetype.org--- end of FTL.TXT ------ GPLv2.TXT --- GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away yourfreedom to share and change it. By contrast, the GNU General PublicLicense is intended to guarantee your freedom to share and change freesoftware--to make sure the software is free for all its users. ThisGeneral Public License applies to most of the Free SoftwareFoundation's software and to any other program whose authors commit tousing it. (Some other Free Software Foundation software is covered bythe GNU Library General Public License instead.) You can apply it toyour programs, too. When we speak of free software, we are referring to freedom, notprice. Our General Public Licenses are designed to make sure that youhave the freedom to distribute copies of free software (and charge forthis service if you wish), that you receive source code or can get itif you want it, that you can change the software or use pieces of itin new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbidanyone to deny you these rights or to ask you to surrender the rights.These restrictions translate to certain responsibilities for you if youdistribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whethergratis or for a fee, you must give the recipients all the rights thatyou have. You must make sure that they, too, receive or can get thesource code. And you must show them these terms so they know theirrights. We protect your rights with two steps: (1) copyright the software, and(2) offer you this license which gives you legal permission to copy,distribute and/or modify the software. Also, for each author's protection and ours, we want to make certainthat everyone understands that there is no warranty for this freesoftware. If the software is modified by someone else and passed on, wewant its recipients to know that what they have is not the original, sothat any problems introduced by others will not reflect on the originalauthors' reputations. Finally, any free program is threatened constantly by softwarepatents. We wish to avoid the danger that redistributors of a freeprogram will individually obtain patent licenses, in effect making theprogram proprietary. To prevent this, we have made it clear that anypatent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution andmodification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which containsa notice placed by the copyright holder saying it may be distributedunder the terms of this General Public License. The "Program", below,refers to any such program or work, and a "work based on the Program"means either the Program or any derivative work under copyright law:that is to say, a work containing the Program or a portion of it,either verbatim or with modifications and/or translated into anotherlanguage. (Hereinafter, translation is included without limitation inthe term "modification".) Each licensee is addressed as "you".Activities other than copying, distribution and modification are notcovered by this License; they are outside its scope. The act ofrunning the Program is not restricted, and the output from the Programis covered only if its contents constitute a work based on theProgram (independent of having been made by running the Program).Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program'ssource code as you receive it, in any medium, provided that youconspicuously and appropriately publish on each copy an appropriatecopyright notice and disclaimer of warranty; keep intact all thenotices that refer to this License and to the absence of any warranty;and give any other recipients of the Program a copy of this Licensealong with the Program.You may charge a fee for the physical act of transferring a copy, andyou may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portionof it, thus forming a work based on the Program, and copy anddistribute such modifications or work under the terms of Section 1above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.)These requirements apply to the modified work as a whole. Ifidentifiable sections of that work are not derived from the Program,and can be reasonably considered independent and separate works inthemselves, then this License, and its terms, do not apply to thosesections when you distribute them as separate works. But when youdistribute the same sections as part of a whole which is a work basedon the Program, the distribution of the whole must be on the terms ofthis License, whose permissions for other licensees extend to theentire whole, and thus to each and every part regardless of who wrote it.Thus, it is not the intent of this section to claim rights or contestyour rights to work written entirely by you; rather, the intent is toexercise the right to control the distribution of derivative orcollective works based on the Program.In addition, mere aggregation of another work not based on the Programwith the Program (or with a work based on the Program) on a volume ofa storage or distribution medium does not bring the other work underthe scope of this License. 3. You may copy and distribute the Program (or a work based on it,under Section 2) in object code or executable form under the terms ofSections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.)The source code for a work means the preferred form of the work formaking modifications to it. For an executable work, complete sourcecode means all the source code for all modules it contains, plus anyassociated interface definition files, plus the scripts used tocontrol compilation and installation of the executable. However, as aspecial exception, the source code distributed need not includeanything that is normally distributed (in either source or binaryform) with the major components (compiler, kernel, and so on) of theoperating system on which the executable runs, unless that componentitself accompanies the executable.If distribution of executable or object code is made by offeringaccess to copy from a designated place, then offering equivalentaccess to copy the source code from the same place counts asdistribution of the source code, even though third parties are notcompelled to copy the source along with the object code. 4. You may not copy, modify, sublicense, or distribute the Programexcept as expressly provided under this License. Any attemptotherwise to copy, modify, sublicense or distribute the Program isvoid, and will automatically terminate your rights under this License.However, parties who have received copies, or rights, from you underthis License will not have their licenses terminated so long as suchparties remain in full compliance. 5. You are not required to accept this License, since you have notsigned it. However, nothing else grants you permission to modify ordistribute the Program or its derivative works. These actions areprohibited by law if you do not accept this License. Therefore, bymodifying or distributing the Program (or any work based on theProgram), you indicate your acceptance of this License to do so, andall its terms and conditions for copying, distributing or modifyingthe Program or works based on it. 6. Each time you redistribute the Program (or any work based on theProgram), the recipient automatically receives a license from theoriginal licensor to copy, distribute or modify the Program subject tothese terms and conditions. You may not impose any furtherrestrictions on the recipients' exercise of the rights granted herein.You are not responsible for enforcing compliance by third parties tothis License. 7. If, as a consequence of a court judgment or allegation of patentinfringement or for any other reason (not limited to patent issues),conditions are imposed on you (whether by court order, agreement orotherwise) that contradict the conditions of this License, they do notexcuse you from the conditions of this License. If you cannotdistribute so as to satisfy simultaneously your obligations under thisLicense and any other pertinent obligations, then as a consequence youmay not distribute the Program at all. For example, if a patentlicense would not permit royalty-free redistribution of the Program byall those who receive copies directly or indirectly through you, thenthe only way you could satisfy both it and this License would be torefrain entirely from distribution of the Program.If any portion of this section is held invalid or unenforceable underany particular circumstance, the balance of the section is intended toapply and the section as a whole is intended to apply in othercircumstances.It is not the purpose of this section to induce you to infringe anypatents or other property right claims or to contest validity of anysuch claims; this section has the sole purpose of protecting theintegrity of the free software distribution system, which isimplemented by public license practices. Many people have madegenerous contributions to the wide range of software distributedthrough that system in reliance on consistent application of thatsystem; it is up to the author/donor to decide if he or she is willingto distribute software through any other system and a licensee cannotimpose that choice.This section is intended to make thoroughly clear what is believed tobe a consequence of the rest of this License. 8. If the distribution and/or use of the Program is restricted incertain countries either by patents or by copyrighted interfaces, theoriginal copyright holder who places the Program under this Licensemay add an explicit geographical distribution limitation excludingthose countries, so that distribution is permitted only in or amongcountries not thus excluded. In such case, this License incorporatesthe limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versionsof the General Public License from time to time. Such new versions willbe similar in spirit to the present version, but may differ in detail toaddress new problems or concerns.Each version is given a distinguishing version number. If the Programspecifies a version number of this License which applies to it and "anylater version", you have the option of following the terms and conditionseither of that version or of any later version published by the FreeSoftware Foundation. If the Program does not specify a version number ofthis License, you may choose any version ever published by the Free SoftwareFoundation. 10. If you wish to incorporate parts of the Program into other freeprograms whose distribution conditions are different, write to the authorto ask for permission. For software which is copyrighted by the FreeSoftware Foundation, write to the Free Software Foundation; we sometimesmake exceptions for this. Our decision will be guided by the two goalsof preserving the free status of all derivatives of our free software andof promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTYFOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHENOTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIESPROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSEDOR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OFMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK ASTO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THEPROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITINGWILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/ORREDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISINGOUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITEDTO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BYYOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHERPROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THEPOSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatestpossible use to the public, the best way to achieve this is to make itfree software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safestto attach them to the start of each source file to most effectivelyconvey the exclusion of warranty; and each file should have at leastthe "copyright" line and a pointer to where the full notice is found. <one line to give the program's name and a brief idea of what it does.> Copyright (C) <year> <name of author> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USAAlso add information on how to contact you by electronic and paper mail.If the program is interactive, make it output a short notice like thiswhen it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.The hypothetical commands `show w' and `show c' should show the appropriateparts of the General Public License. Of course, the commands you use maybe called something other than `show w' and `show c'; they could even bemouse-clicks or menu items--whatever suits your program.You should also get your employer (if you work as a programmer) or yourschool, if any, to sign a "copyright disclaimer" for the program, ifnecessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. <signature of Ty Coon>, 1 April 1989 Ty Coon, President of ViceThis General Public License does not permit incorporating your program intoproprietary programs. If your program is a subroutine library, you mayconsider it more useful to permit linking proprietary applications with thelibrary. If this is what you want to do, use the GNU Library GeneralPublic License instead of this License.--- end of GPLv2.TXT ---