利用QCustomPlot绘制饼图 - QTCN开发网

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只看楼主倒序阅读楼主发表于: 2020-04-22

— 本帖被 20091001753 从 Qt 作品展移动到本区(2020-04-22) —

第一列为 南丁格尔玫瑰图
第二列为 普通的饼图和圆环饼图
第三列为 嵌套饼图

复制代码

void MainWindow::setupPieDemo(QCustomPlot *customPlot)
{
QCPPie *pie1 = new QCPPie(customPlot);
QVector<QString> labels = {
"rose1","rose2","rose3","rose4","rose5","rose6","rose7","rose8",
};
QVector<double> values1 = {
10, 5, 15, 25, 20, 35, 30, 40
};
pie1->add(labels, values1);
pie1->setHoleSize(0.3);
pie1->setRadius(0.4);
pie1->setCenter(0.15, 0.25);
pie1->setLabelVisible(false);
pie1->setRoseType(QCPPie::rtRadius);
connect(pie1, &QCPPie::hoveredSlice, [](QCPPieSlice *slice, bool hovered){
slice->setLabelVisible(hovered);
});
QCPPie *pie2 = new QCPPie(customPlot);
pie2->add(labels, values1);
pie2->setHoleSize(0.5);
pie2->setRadius(0.4);
pie2->setCenter(0.15, 0.75);
pie2->setRoseType(QCPPie::rtArea);
QCPPie *pie3 = new QCPPie(customPlot);
QVector<QString> labels3 = {
"直接访问", "邮件营销", "联盟广告", "视频广告", "搜索引擎"
};
QVector<double> values3 = {
335, 310, 234, 135, 1548
};
pie3->add(labels3, values3);
pie3->setRadius(0.4);
pie3->setCenter(0.4, 0.25);
pie3->setTextFormat("{b}:{d}%");
QCPPie *pie4 = new QCPPie(customPlot);
pie4->add(labels3, values3);
pie4->setRadius(0.4);
pie4->setCenter(0.4, 0.75);
pie4->setHoleSize(0.7);
pie4->setLabelVisible(false);
pie4->setLabelPosition(QCPPieSlice::lpCenter);
pie4->setLabelFont(QFont("sans-serif", 30, QFont::Bold));
connect(pie4, &QCPPie::hoveredSlice, [](QCPPieSlice *slice, bool hovered){
slice->setLabelVisible(hovered);
});
QCPPie *pie5 = new QCPPie(customPlot);
QVector<QString> labels5 = {
"直达", "营销广告", "搜索引擎"
};
QVector<double> values5 = {
335, 679, 1548
};
pie5->add(labels5, values5);
pie5->setRadius(0.3);
pie5->setLabelPosition(QCPPieSlice::lpInside);
pie5->setLabelColor(Qt::white);
pie5->setSelectedMode(QCPPie::smSingle);
pie5->setCenter(0.75, 0.5);
QCPPie *pie6 = new QCPPie(customPlot);
QVector<QString> labels6 = {
"直达", "邮件营销", "联盟广告", "视频广告", "百度", "谷歌", "必应", "其他"
};
QVector<double> values6 = {
335, 310, 234, 135, 1048, 251, 147, 102
};
pie6->add(labels6, values6);
pie6->setName("访问来源");
pie6->setRadius(0.55);
pie6->setHoleSize(0.75);
pie6->setCenter(0.75, 0.5);
pie6->setTextFormat("{a}\n{b}：{c} {d}%");
}

共8条评分，好评度+2 ，贡献值+2 ，金钱+20 ，威望+2

巫添良	好评度 +1	-	2020-06-11
巫添良	贡献值 +1	-	2020-06-11
巫添良	威望 +1	-	2020-06-11
巫添良	金钱 +10	-	2020-06-11
20091001753	好评度 +1	-	2020-04-22
20091001753	贡献值 +1	-	2020-04-22
20091001753	威望 +1	-	2020-04-22
20091001753	金钱 +10	-	2020-04-22