【QCustomPlot实战系列】QCPGraph堆叠面积图

在【QCustomPlot实战系列】QCPGraph堆叠图的基础上，使用setChannelFillGraph函数即可
QCPGraph堆叠面积图

static QCPScatterStyle GetScatterStyle(const QColor& color)
{QPen pen(color, 2);return QCPScatterStyle(QCPScatterStyle::ssCircle,pen,Qt::white, 5);
}static QCPGraph* AddGraph(QCustomPlot* parentPlot,const QVector<double>& keys,const QVector<double>& values,const QColor& color,const QString& name)
{auto graph = parentPlot->addGraph();graph->setData(keys, values);graph->setScatterStyle(GetScatterStyle(color));graph->setPen(QPen(QColor(color), 2));graph->setName(name);return graph;
}void StackedAreaChart::initCustomPlot(QCustomPlot *parentPlot)
{QVector<double> x = {1, 2, 3, 4, 5, 6, 7,};QVector<double> y = {150, 230, 224, 218, 135, 147, 260};QVector<QString> labels = {"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"};auto ticker = QSharedPointer<QCPAxisTickerText>::create();ticker->setTicks(x, labels);QPen pen(QColor("#5c7bd9"), 2);QCPScatterStyle style(QCPScatterStyle::ssCircle,pen,Qt::white, 5);auto graph5 = AddGraph(parentPlot, x, {820, 932, 901, 934, 1290, 1330, 1320},"#73c0de", "Search Engine");auto graph4 = AddGraph(parentPlot, x, {320, 332, 301, 334, 390, 330, 320},"#ee6666", "Direct");auto graph3 = AddGraph(parentPlot, x, {150, 232, 201, 154, 190, 330, 410},"#fac858", "Video Ads");auto graph2 = AddGraph(parentPlot, x, {220, 182, 191, 234, 290, 330, 310},"#91cc75", "Union Ads");auto graph1 = AddGraph(parentPlot, x, {120, 132, 101, 134, 90, 230, 210},"#5c7bd9", "Email");graph5->moveAbove(graph4);graph4->moveAbove(graph3);graph3->moveAbove(graph2);graph2->moveAbove(graph1);graph5->setBrush(QBrush("#9dd2e7"));graph5->setChannelFillGraph(graph4);graph4->setBrush(QBrush("#f39393"));graph4->setChannelFillGraph(graph3);graph3->setBrush(QBrush("#fbd88a"));graph3->setChannelFillGraph(graph2);graph2->setBrush(QBrush("#b2db9e"));graph2->setChannelFillGraph(graph1);graph1->setBrush(QBrush("#889bd8"));parentPlot->xAxis->setTicker(ticker);parentPlot->xAxis->grid()->setVisible(false);parentPlot->xAxis->setRange(0, 8);parentPlot->yAxis->setRange(0, 3000);parentPlot->legend->setVisible(true);parentPlot->legend->setBorderPen(Qt::NoPen);parentPlot->legend->setFillOrder(QCPLayoutGrid::foColumnsFirst);parentPlot->axisRect()->insetLayout()->setInsetAlignment(0, Qt::AlignHCenter | Qt::AlignTop);
}