[scqb] Source Files

Source Files

All the source code will be located here in the source directory. In other word, only files in this directory should be pushed into your version control. You can skip this session if you only interested in building the tutorial project.

Below are the files in this tutorial project.
SimpleApp
|-CMakeLists.txt
|-main.cpp
|-mainwindow.h
|-Resources.qrc
|-SimpleQml.qml
|-mainwindow.cpp
|-mainwindow.ui
Let observe the CMakeList.txt file.

CMAKE_MINIMUM_REQUIRED(VERSION 2.8.11) PROJECT(SimpleApp) SET(CMAKE_INCLUDE_CURRENT_DIR ON) SET(ARCH_32BIT ${CMAKE_SIZEOF_VOID_P} EQUAL 4) SET(ARCH_64BIT ${CMAKE_SIZEOF_VOID_P} EQUAL 8)

The architecture of complier can be checked by reading the size of void pointer.
The code below manages QT lib. It will check the current build environment, and store that value to QT_INSTALLED_PATH.  That path is the path that you were asked by QT's installer wizard. Note that the WIN32 refer to both 32 bit and 64 bit of Windows.

# ================================= # Setup QT # ================================= IF( WIN32 AND ${ARCH_32BIT}) SET(QT_INSTALLED_PATH "C:/QtMSVCX86/Qt5.5.0/5.5/msvc2013" ) ELSEIF(WIN32 AND ${ARCH_64BIT}) SET(QT_INSTALLED_PATH "C:/QtMSVCX64/Qt5.5.0/5.5/msvc2013" ) ELSEIF(UNIX AND NOT MINGW AND ${ARCH_32BIT}) SET(QT_INSTALLED_PATH "/opt/Qt5.5.0/5.5/gcc/" ) ELSEIF(UNIX AND NOT MINGW AND ${ARCH_64BIT}) SET(QT_INSTALLED_PATH "/opt/Qt5.5.0/5.5/gcc_64/" ) ENDIF() SET(CMAKE_AUTOMOC ON) SET(CMAKE_AUTOUIC ON) SET(CMAKE_AUTORCC ON) FIND_PACKAGE(Qt5Widgets PATHS ${QT_INSTALLED_PATH}) FIND_PACKAGE(Qt5Qml PATHS ${QT_INSTALLED_PATH}) FIND_PACKAGE(Qt5Quick PATHS ${QT_INSTALLED_PATH})

The QT’s MOC, UIC and RCC are handled automatically by CMAKE_AUTOMOC, CMAKE_AUTOUIC and CMAKE_AUTORCC. The QT’s packages that were included are Qt5Widgets, Qt5QML and Qt5Quck. You can add other package such as Qt5Network here.

# ============================ # Setup Boost # ============================ # Add search with prefix "lib". Reason: # On windows, b2 generate lib with lib prefix # such as libboost_signals-vc120-s-1_59.lib SET(CMAKE_FIND_LIBRARY_PREFIXES lib) # Disable Boost_NO_BOOST_CMAKE. # Reason: This is to remove # "BOOST_DIR not found" in INSTALL build. SET(Boost_NO_BOOST_CMAKE ON) # Do not use system boost ie. Boost from # apt-get SET(Boost_NO_SYSTEM_PATHS ON) IF( WIN32 AND ${ARCH_32BIT}) SET(BOOST_INSTALLED_PATH C:/Boost) ELSEIF(WIN32 AND ${ARCH_64BIT}) SET(BOOST_INSTALLED_PATH C:/Boost64) ELSEIF(UNIX AND NOT MINGW AND ${ARCH_32BIT}) SET(BOOST_INSTALLED_PATH /opt/boost) ELSEIF(UNIX AND NOT MINGW AND ${ARCH_64BIT}) SET(BOOST_INSTALLED_PATH /opt/boost64) ENDIF() SET(BOOST_ROOT ${BOOST_INSTALLED_PATH}) # Boost 1.59 built into /include/boost-version/ SET(BOOST_INCLUDEDIR ${BOOST_INSTALLED_PATH}/include/boost-1_59) SET(BOOST_USE_STATIC_LIBS ON) SET(BOOST_USE_MULTITHREADED ON) # Use default runtime-link (thing like vc redist ..) SET(BOOST_USE_STATIC_RUNTIME OFF) FIND_PACKAGE(Boost 1.57.0 COMPONENTS signals system thread date_time chrono REQUIRED)

Similar to that of QT, the code is very straight forward. Make sure that you have installed boost to the BOOST_INSTALLED_PATH path by reviewing b2’s  --prefix.
The code below will compile and link the source codes to the exe file.

# ========================= # Linker # ========================= ADD_EXECUTABLE( SimpleApp main.cpp mainwindow.cpp Resources.qrc) # Use C++11 flag on C++ compiler. # For most compliers , # The auto is a feature that require C++11 flag TARGET_COMPILE_FEATURES( SimpleApp PUBLIC cxx_auto_type) # Add boost include directory TARGET_INCLUDE_DIRECTORIES( SimpleApp PUBLIC ${BOOST_INCLUDEDIR}) TARGET_LINK_LIBRARIES(SimpleApp Qt5::Widgets Qt5::Qml Qt5::Quick ${Boost_LIBRARIES} ) # ptherad is required for linux IF(UNIX AND NOT MINGW) TARGET_LINK_LIBRARIES(SimpleApp -lpthread ) ENDIF()

Below are the codes in mainwindows.cpp and .h file

#ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QMainWindow> #include <QtQuick/QQuickView> #include <boost/signals2/signal.hpp> #include <memory> namespace Ui { class MainWindow; } class MainWindow : public QMainWindow { Q_OBJECT public: explicit MainWindow(QWidget *parent = 0); ~MainWindow();    private slots: void OnQmlSignaled(); private: std::unique_ptr<Ui::MainWindow> m_Ui; std::unique_ptr<QQuickView> m_QmlView; boost::signals2::signal<void()> m_BoostSignal; }; #endif // MAINWINDOW_H

#include <QtQuick/QQuickView> #include <QQuickItem> #define BOOST_THREAD_PROVIDES_FUTURE #include <boost/thread.hpp> #include <boost/thread/future.hpp> #include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), m_Ui(new Ui::MainWindow), m_QmlView(new QQuickView) { \\.. Code skipped .. m_BoostSignal.connect( [this](){ boost::future<QString> f = boost::async( [](){return QString("Hello from boost future");} ); this->m_Ui->plainTextEdit->appendPlainText(f.get()); } ); connect(m_Ui->pushButton, &QPushButton::clicked, [this](){ m_BoostSignal(); }); } void MainWindow::OnQmlSignaled() { m_BoostSignal(); } MainWindow::~MainWindow() = default;