QChartView饼图

1、环境准备

.pro里:

QT += charts

头文件:

#include <QtCharts>

2、在mainwindow.h里定义饼图变量

QPieSeries *series;

 

3、mainwindow.cpp

   series = new QPieSeries();
    series->append("故障:20个", 80);
    series->append("正常:80个", 20);
    series->setLabelsVisible(/*false*/);
    QPieSlice *slice_red = series->slices().at(0);
    QPieSlice *slice_green = series->slices().at(1);
    slice_red->setColor(QColor(199,38,22));
    slice_green->setColor(QColor(0,165,94));
    slice_red->setLabelColor(QColor(255,255,255));
    slice_green->setLabelColor(QColor(255,255,255));
    slice_red->setExploded();//展开
    QFont font;
    font.setPointSize(12);
    slice_red->setLabelFont(font);
    slice_green->setLabelFont(font);
    QChart *chart = new QChart();
    chart->addSeries(series);
    chart->legend()->hide();
    chart->setBackgroundBrush(QBrush(QColor(34,38,72)));
    chart->setAnimationOptions(QChart::AllAnimations);//设置启用或禁用动画
    QChartView *chartview = new QChartView(chart);
    chartview->setRenderHint(QPainter::Antialiasing);
    QVBoxLayout* layout = new QVBoxLayout;
    layout->addWidget(chartview);
    ui->chartview1->setLayout(layout);

4、效果

QChartView饼图

 

 

 

 

ps:

设置大小setPieSize感觉没用,resize也没有用;

这个饼图用起来很难做布局,主要是大小不好设置;

除了自己加一个通过设置layout的方式将chartview与widget绑定,也可以

chartview->setParent(ui->chartview1);

chartview->show();

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