CopperSpice

A Modern Cross-platform C++ Gui Library

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CopperSpice

CopperSpice is a set of individual libraries which can be used to develop cross platform software applications in C++. It is a totally open source project released under the LGPL V2.1 license and was initially derived from the Qt framework. Over the last several years CopperSpice has completely diverged, with a goal of providing a first class GUI library to unite the C++ community.

Our motivation for developing CopperSpice was to change the fundamental design and turn the existing framework into a set of libraries for C++ developers. We are accomplishing this by leveraging modern C++ functionality, new technology, and modern tooling. CopperSpice currently requires C++17 or newer.

You can use CopperSpice with any existing tool chain such as GCC, clang, or MSVC. A C++ program using the CopperSpice libraries can be developed using any editor such as VI, emacs, or Diamond and built using CMake from a shell command line. For an integrated environment Visual Studio or QtCreator can be used for development, building, testing, and deployment.

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Libraries

CopperSpice consists of the following libraries which can be linked into any existing C++ application.

CsCore Date/Time, Strings (UTF-8 & UTF-16), Containers (QVector, QList, QMap, QHash, QFlatMap, QStack ...)
File System, Locales, Time Zone, JSON, Muxtes, Threads CsGui Dialogs, File Dialogs, Menus, Fonts, Widgets (QCheckbox, QPushbutton, QLineEdit, QTabWidget ...)
Layouts, Printing, Styles CsMultimedia Audio, Camera, Video CsNetwork TCP, HTTP, FTP, IPv6, DNS lookups, SSL, URL support CsOpenGL Rendering Context, Shader CsScript JavaScript engine which can be embedded in your application CsSql SQLite, PostgreSQL, MySQL ... CsSvg Renderer, Widget CsWebKit Web View, Web Page CsXml DOM, Reader CsXmlPatterns Schema, Xml Query
Meta-Object Compiler (moc) The Meta-Object Compiler is no longer required for generating reflection meta data in CopperSpice Since moc is no longer required it was completely removed All functionality originally provided by moc was replaced with compile time templates CopperSpice automatically generates meta data for processing Signals/Slots and Introspection A template class can now inherit from QObject with no restrictions on data types Complex data types can be used as a signal or slot argument, for example this is valid in CopperSpice: QMap<QString, int> Removal of moc simplifies the build process
Benefits of CopperSpice Extensive use of modern C++ functionality templates, variadic templates, lambdas expression SFINAE move semantics, rvalue references constexpr, constexpr if decltype, type traits, tuple, override strongly typed enums threading model Redesigned all container classes Composition is used to wrap the C++ standard library containers QVector, QList, QStringList, QLinkedList, QSet, QStack, QQueue QMap, QHash, QMultiMap, QMultiHash Supports both the STL and Qt API Implement QMultiHash and QMultiMap as separate classes from QHash and QMap Reverse iterators Removed copy on write semantics Added QFlatMap Ordered map which stores elements in contiguous memory as a sorted vector of pairs Similar API to QMap
CopperSpice includes a majority of the Qt 5 classes Improve CsNetwork, supports OpenSSL 1.0.x and 1.1.x Support for TLS and SPDY added Add support for SHA-2 and SHA-3 Reimplemented atomic support (QAtomicInt, QAtomicPointer) wrapping the C++ standard library functionality Enhanced CopperSpice to use STL algorithms rather than hand rolled algorithms Removed support for obsolete platforms QLocale classes refactored to use UTF-8 string classes Update codec classes using UTF-8 strings High DPI support Moved to Unicode 11, migrate to Harfbuzz 2.x for text shaping Improved platform specific support Redesign plugin system QVariant system, full overhaul removing unions in favor of type safe C++ constructs
Integration of CsSignal Improved thread aware Signal/Slot delivery Increased efficiency while maintaining the full Signal/Slot API Deadlocks in Signal/Slot processing have been eliminated Integration of CsString Change storage to properly represent Unicode strings Added new QString8 (UTF-8) and QString16 (UTF-16) classes QString is synonymous with QString8 Create QStringParser class for string formatting methods Redesign QRegularExpression class using iterators internally to handle UTF-8 and UTF-16 Add QStringView class which provides a view of a QString Remove all string surrogate checking since it is not required with UTF-8 or UTF-16 encoding
Building All CopperSpice libraries are built using CMake C++ applications which are linked with CopperSpice should also use CMake whenever possible Other build systems can be configured to link CopperSpice with your C++ application

Original Libraries (BSD License)

The following are standalone C++ libraries which can be linked into any existing C++ application.

CsCrypto Provides a common interface to call existing cryptography libraries. It is designed to detect common cryptographic errors at compile time by using C++ type checking with the intention of preventing security vulnerabilities. CsLibGuarded Encapsulates a mutex with the corresponding data. There are several different classes available to support multi-threading allowing developers to choose the most appropriate solution. This library is used in CsSignal and CopperSpice. CsPaint Provides a higher level API for 3D, 2D, and text rendering on the GPU using the Vulkan graphics API. CsSignal This library is used to provide thread aware Signal/Slot delivery and is used by CopperSpice. CsString Unicode aware string library. This library is used by CopperSpice to support UTF-8 (QString8) and UTF-16 (QString16).

Converting to CopperSpice

The process of converting to CopperSpice is straight forward and the team is available for assistance. The header files in your Qt application need to be converted one time and this can be done quickly using our PepperMill utility. The build files in your project should be converted to use CMake. For examples on writing your build files refer to our KitchenSink demo program, Diamond Editor application and our "CopperSpice Overview" Documentation.

Getting Started

The "CopperSpice Overview" documentation includes information about how to build CopperSpice from source, where to download prebuilt binary files, setting up a project using CopperSpice, and how to migrate from Qt to CopperSpice. CS Overview Documentation

Contacting CopperSpice

Ask questions or request a feature on our GitHub repository Github Join a discussion on our forum Forum Email the co-founders: info [at] copperspice.com

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