CMake构建Qt工程

工程目录结构如下，

1. 首先用QtCreator创建一个Plain C++ Application
2. 选择CMake构建工程；
3. 选择本地编译系统，如这里我们选择msvc2017_64

工程创建好后，依次添加c++类

• BarModelMapperChartWidget（直方图视图用于显示，数据消费者）
• TableModel（表格数据模型，数据生成者）
• MainWindow（主窗口）

工程具体各文件内容如下：

1. BarModelMapperChartWidget.h

#ifndef BARMODELMAPPERCHARTWIDGET_H
#define BARMODELMAPPERCHARTWIDGET_H

#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include

QT_CHARTS_USE_NAMESPACE

class BarModelMapperChartWidget : public QWidget
{
    Q_OBJECT
public:
    explicit BarModelMapperChartWidget(QWidget *parent = NULL);
   
    void initModelMapper(QAbstractTableModel* model);
private:
    QChart* m_chart;//报表组件
    QChartView* m_chartView;//报表视图组件
};

#endif // BARMODELMAPPERCHARTWIDGET_H
 

1. BarModelMapperChartWidget. cpp

#include "BarModelMapperChartWidget.h"

BarModelMapperChartWidget::BarModelMapperChartWidget(QWidget *parent) : QWidget(parent)
{
    m_chart = new QChart;
    m_chart->setAnimationOptions(QChart::AllAnimations);

    m_chartView = new QChartView(m_chart);
    m_chartView->setRenderHint(QPainter::Antialiasing);
    QHBoxLayout* layout = new QHBoxLayout;
    layout->addWidget(m_chartView);
    setLayout(layout);
}

void BarModelMapperChartWidget::initModelMapper(QAbstractTableModel *model)
{
    QBarSeries *series = new QBarSeries;
    int first = 3;
    int count = 5;
    QVBarModelMapper *mapper = new QVBarModelMapper(this);
    mapper->setFirstBarSetColumn(1);
    mapper->setLastBarSetColumn(4);
    mapper->setFirstRow(first);
    mapper->setRowCount(count);
    // 设置mapper的数据集对象
    mapper->setSeries(series);
    // 设置mapper对应的数据Model
    mapper->setModel(model);
    m_chart->addSeries(series);

    QStringList categories;
    categories << "April" << "May" << "June" << "July" << "August";
    QBarCategoryAxis *axis = new QBarCategoryAxis();
    axis->append(categories);
    m_chart->createDefaultAxes();
    m_chart->setAxisX(axis, series);
}
 

1. TableModel.h

#ifndef TABLEMODEL_H
#define TABLEMODEL_H

#include
#include
#include
#include
#include
#include
#include

class TableModel : public QAbstractTableModel
{
    Q_OBJECT
public:
    explicit TableModel(QObject *parent = 0);
    virtual ~TableModel();
    int rowCount(const QModelIndex &parent = QModelIndex()) const;
    int columnCount(const QModelIndex &parent = QModelIndex()) const;
    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
    Qt::ItemFlags flags(const QModelIndex &index) const;
   
    void generateData();
private slots:
   
    void onGenerateData();
private:
    QList * > m_data;//模型数据容器
    int m_columnCount;//列数
    int m_rowCount;//行数
    QTimer timer;//定时器
};

#endif // TABLEMODEL_H
 

1. TableModel.cpp

#include "TableModel.h"

TableModel::TableModel(QObject *parent) : QAbstractTableModel(parent)
{
    m_columnCount = 6;
    m_rowCount = 12;
    // 创建数据容器并初始化
    for (int i = 0; i < m_rowCount; i++)
    {
        QVector* dataVec = new QVector(m_columnCount);
        for (int k = 0; k < dataVec->size(); k++)
        {
            dataVec->replace(k, 100 + qrand() % 50);
        }
        m_data.append(dataVec);
    }
    // 每隔2秒超时
    timer.start(2000);
    connect(&timer, SIGNAL(timeout()), this, SLOT(onGenerateData()));
}

TableModel::~TableModel()
{
    qDeleteAll(m_data);
}

int TableModel::rowCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)
    return m_data.count();
}

int TableModel::columnCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)
    return m_columnCount;
}

QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if (role != Qt::DisplayRole)
        return QVariant();

    if (orientation == Qt::Horizontal)
        return QString("201%1").arg(section);
    else
        return QString("%1").arg(section + 1);
}

QVariant TableModel::data(const QModelIndex &index, int role) const
{
    if (role == Qt::DisplayRole)
    {
        return m_data[index.row()]->at(index.column());
    }
    else if (role == Qt::EditRole)
    {
        return m_data[index.row()]->at(index.column());
    }

    return QVariant();
}

bool TableModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
    if (index.isValid() && role == Qt::EditRole)
    {
        m_data[index.row()]->replace(index.column(), value.toDouble());
        emit dataChanged(index, index);
        return true;
    }
    return false;
}

Qt::ItemFlags TableModel::flags(const QModelIndex &index) const
{
    return QAbstractItemModel::flags(index) | Qt::ItemIsEditable;
}

void TableModel::generateData()
{
    // 生成新的数据
    for (int i = 0; i < m_rowCount; i++)
    {
        for (int k = 0; k < m_data.at(i)->size(); k++)
        {
            m_data.at(i)->replace(k, 100 + qrand() % 50);
        }
    }
    QModelIndex leftTop = index(0, 0);
    QModelIndex rightBottom = index(m_rowCount - 1, m_columnCount - 1);
    // 生成新数据后发送模型数据发生变化的信号dataChanged
    emit dataChanged(leftTop, rightBottom);
}

void TableModel::onGenerateData()
{
    generateData();
}
 

1. MainWindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include
#include
#include
#include "ChartWidget/BarModelMapperChartWidget.h"
#include "Model/TableModel.h"

class MainWindow : public QWidget
{
    Q_OBJECT
public:
    explicit MainWindow(QWidget *parent = NULL);

private:
    BarModelMapperChartWidget* m_barModelMapperChartWidget;//报表组件
    QTableView* m_tableView;//表格视图组件
    TableModel* m_model;//表格模型
};

#endif // MAINWINDOW_H

1. MainWindow.cpp

#include "MainWindow.h"

MainWindow::MainWindow(QWidget *parent) : QWidget(parent)
{
    m_model = new TableModel();
    m_barModelMapperChartWidget = new BarModelMapperChartWidget(this);
    m_barModelMapperChartWidget->initModelMapper(m_model);

    m_tableView = new QTableView(this);
    m_tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
    m_tableView->verticalHeader()->setSectionResizeMode(QHeaderView::Stretch);

    m_tableView->setModel(m_model);
    QHBoxLayout* layout = new QHBoxLayout;
    layout->addWidget(m_tableView);
    layout->addWidget(m_barModelMapperChartWidget);
    setLayout(layout);
    resize(800, 400);
}
 

1. CMakeLists.txt

# CMake版本约束
cmake_minimum_required(VERSION 2.8)
#工程名称
project(CMakeDemo)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_FLAGS "-fPIC")
set(CMAKE_BUILD_TYPE "Debug")
# 增加子目录ChartWidget的源码到变量SOURCES
aux_source_directory(ChartWidget SOURCES)
# 增加子目录Model的源码到变量SOURCES
aux_source_directory(Model SOURCES)
# 设置QT安装路径
set(CMAKE_PREFIX_PATH "D:/QT/installRoot")
set(CMAKE_INCLUDE_CURRENT_DIR ON)
# 开启Qt MOC
set(CMAKE_AUTOMOC ON)
#开启Qt ROC
set(CMAKE_AUTORCC ON)
# 开启Qt UIC
set(CMAKE_AUTOUIC ON)
set(QT Core Gui Widgets Charts)
# 查找Qt库
find_package(Qt5 REQUIRED ${QT})
if(Qt5_FOUND)
    include_directories(${Qt5Core_INCLUDE_DIRS} ${Qt5Gui_INCLUDE_DIRS}
        ${Qt5Widgets_INCLUDE_DIRS} ${Qt5Charts_INCLUDE_DIRS})
    set(QT_LIBRARIES ${Qt5Widgets_LIBRARIES} ${Qt5Core_LIBRARIES} ${Qt5Gui_LIBRARIES} ${Qt5Charts_LIBRARIES})
    # 增加可执行文件
    add_executable(${PROJECT_NAME} ${SOURCES} main.cpp MainWindow.cpp)
    target_link_libraries(${PROJECT_NAME} ${QT_LIBRARIES})
endif(Qt5_FOUND)

运行结果如下，

每隔两秒刷新一下结果