mirror of https://github.com/JakubMelka/PDF4QT.git
73 lines
2.5 KiB
Plaintext
73 lines
2.5 KiB
Plaintext
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==========================================================================
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PDFforQt library / PDF viewer
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(c) Jakub Melka 2018-2020
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==========================================================================
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This software is consisting of PDF rendering library, and viewer,
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which can display PDF documents. Software is implementing the PDF
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functionality based on PDF Reference 2.0. It is written and maintained
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by Jakub Melka.
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1. ACKNOWLEDGEMENTS
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This software is based in part on the work of the Independent JPEG Group.
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Portions of this software are copyright © 2019 The FreeType
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Project (www.freetype.org). All rights reserved.
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2. LEGAL ISSUES
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Both library and viewer uses more benevolent LGPL license, so it is more
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usable in commercial software, than GPL code only. Please see attached
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file - LICENSE.txt to see details. This software also uses several
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third party software, and user of this software must also respect licenses
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of third party libraries.
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3. FEATURES
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Software have following features (the list is not complete):
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- multithreading support
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- hardware accelerated rendering
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- encryption
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- color management
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- optional content handling
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- text layout analysis
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- signature validation
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- annotations
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- form filling
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- text to speech capability
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- editation
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- file attachments
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- optimalization (compressing documents)
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- much more!
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4. THIRD PARTY LIBRARIES
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a) libjpeg, see https://www.ijg.org/
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b) FreeType, see https://www.freetype.org/index.html, FTL license used
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c) OpenJPEG, implementing Jpeg2000, see https://www.openjpeg.org/, 2-clause MIT license
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d) Qt, https://www.qt.io/, LGPL license used
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e) OpenSSL, https://www.openssl.org/, Apache 2.0 license
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f) LittleCMS, http://www.littlecms.com/
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5. CONTRIBUTIONS
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If you want to contribute to this project, it is required, that you (contributor)
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transfer the copyright to me, because I want to have a freedom to do whatever
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I want with my library, without obligation to someone else. But I would strongly
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prefer, if you want to contribute, to contribute in the form of testing, consultation,
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giving advices etc. I would like to write this library entirely by myself.
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6. COMPILING
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To compile this project, Visual Studio 2019 is needed. Only Microsoft Windows
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is supported at this time. You must also have all of above libraries in order
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to compile the project.
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7. DISCLAIMER
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I wrote this project in my free time. I hope you will find it useful!
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