QChartView绘制饼状图

效果图：

#include "mainwindow.h"

#include "form.h"

#include <QApplication>

#include <QtCharts>

#include <QPieSeries>

#include <QVector>

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    QVector<int> vector_monitNumber;

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    vector_monitNumber.append();

    int sum = ;

    for(int i=;i<vector_monitNumber.size();i++)

    {

        sum += vector_monitNumber.at(i);

    }

    int float_month1 = vector_monitNumber.at()*/sum;

    QPieSlice *slice1 = new QPieSlice(QString(""), float_month1);

    //slice1->setLabelVisible(true);

    slice1->setLabel(QString("1月份%1").arg(vector_monitNumber.at()));

    //slice1->setLabelColor(Qt::yellow);

    slice1->setLabelVisible();

    //slice1->setLabelColor(Qt::white);

    slice1->setLabelPosition(QPieSlice::LabelOutside);

    //slice1->setLabelPosition(QPieSlice::LabelInsideTangential);

    slice1->setBrush(QColor(,,));

    QPieSlice *slice2 = new QPieSlice(QString(""), );

    slice2->setLabelVisible(true);

    slice2->setLabel(QString("2月份%1").arg(vector_monitNumber.at()));

    //slice2->setLabelColor(Qt::red);

    //slice2->setLabelPosition(QPieSlice::LabelInsideTangential);

    slice2->setBrush(QColor(,,));

    QPieSlice *slice3 = new QPieSlice(QString(""), );

    slice3->setLabelVisible(true);

//    slice3->setLabelColor(Qt::blue);

    slice3->setLabel(QString("3月份%1").arg(vector_monitNumber.at()));

    slice3->setLabelPosition(QPieSlice::LabelOutside);

    slice3->setBrush(QColor(,,));

    QPieSlice *slice4 = new QPieSlice(QString(""), );

    slice4->setLabelVisible(true);

//    slice3->setLabelColor(Qt::blue);

    slice4->setLabel(QString("4月份%1").arg(vector_monitNumber.at()));

    slice4->setLabelPosition(QPieSlice::LabelOutside);

    slice4->setBrush(QColor(,,));

    QPieSlice *slice5 = new QPieSlice(QString(""), );

    slice5->setLabelVisible(true);

//    slice3->setLabelColor(Qt::blue);

    slice5->setLabel(QString("5月份%1").arg(vector_monitNumber.at()));

    slice5->setLabelPosition(QPieSlice::LabelOutside);

    slice5->setBrush(QColor(,,));

    QPieSlice *slice6 = new QPieSlice(QString(""), );

    slice6->setLabelVisible(true);

//    slice3->setLabelColor(Qt::blue);

    slice6->setLabel(QString("6月份%1").arg(vector_monitNumber.at()));

    slice6->setLabelPosition(QPieSlice::LabelOutside);

    slice6->setBrush(QColor(,,));

    QPieSlice *slice7 = new QPieSlice(QString(""), );

    slice7->setLabelVisible(true);

    slice7->setLabel(QString("7月份%1").arg(vector_monitNumber.at()));

    slice7->setLabelPosition(QPieSlice::LabelOutside);

    slice7->setBrush(QColor(,,));

    QPieSlice *slice8 = new QPieSlice(QString(""), );

    slice8->setLabelVisible(true);

    slice8->setLabel(QString("8月份%1").arg(vector_monitNumber.at()));

    slice8->setLabelPosition(QPieSlice::LabelOutside);

    slice8->setBrush(QColor(,,));

    QPieSlice *slice9 = new QPieSlice(QString(""), );

    slice9->setLabelVisible(true);

    slice9->setLabel(QString("9月份%1").arg(vector_monitNumber.at()));

    slice9->setLabelPosition(QPieSlice::LabelOutside);

    slice9->setBrush(QColor(,,));

    QPieSlice *slice10 = new QPieSlice(QString(""), );

    slice10->setLabelVisible(true);

    slice10->setLabel(QString("10月份%1").arg(vector_monitNumber.at()));

    slice10->setLabelPosition(QPieSlice::LabelOutside);

    slice10->setBrush(QColor(,,));

    QPieSlice *slice11 = new QPieSlice(QString(""), );

    slice11->setLabelVisible(true);

    slice11->setLabel(QString("11月份%1").arg(vector_monitNumber.at()));

    slice11->setLabelPosition(QPieSlice::LabelOutside);

    slice11->setBrush(QColor(,,));

    QPieSlice *slice12 = new QPieSlice(QString(""), );

    slice12->setLabelVisible(true);

    slice12->setLabel(QString("12月份%1").arg(vector_monitNumber.at()));

    slice12->setLabelPosition(QPieSlice::LabelOutside);

    slice12->setBrush(QColor(,,));

    QPieSeries *series = new QPieSeries();

    //饼图中间空心的大小

    series->setHoleSize(0.35);

//    series->append("Protein 4.2%", 4.2);

//    series->append("Carbs 56.4%", 56.4);

//    series->append("Other 23.8%", 23.8);

    series->append(slice1);

    series->append(slice2);

    series->append(slice3);

    series->append(slice4);

    series->append(slice5);

    series->append(slice6);

    series->append(slice7);

    series->append(slice8);

    series->append(slice9);

    series->append(slice10);

    series->append(slice11);

    series->append(slice12);

    QChartView *chartView = new QChartView();

    chartView->setRenderHint(QPainter::Antialiasing);

    //chartView->chart()->setTitle("DonutChart Example");

    chartView->chart()->addSeries(series);

    chartView->chart()->legend()->setAlignment(Qt::AlignRight);

    //chartView->chart()->setTheme(QChart::ChartThemeBlueCerulean);

    //chartView->chart()->legend()->setFont(QFont("Arial",7));

    //chartView->chart()->legend()->setVisible(false);

    MainWindow w;

    w.resize(, );

    w.setCentralWidget(chartView);

    w.show();

    return a.exec();

}