138 lines
4.4 KiB
C++
138 lines
4.4 KiB
C++
#include "realTimeDataDisplay.h"
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realTimeDataDisplay::realTimeDataDisplay(QWidget* parent)
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: QMainWindow(parent)
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{
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ui.setupUi(this);
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mPlot = new QCustomPlot(this);
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setCentralWidget(mPlot);
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//mPlot->yAxis->setTickLabels(false);
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mPlot->axisRect()->axis(QCPAxis::atRight, 0)->setPadding(54);
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mGraph1 = mPlot->addGraph(mPlot->xAxis, mPlot->axisRect()->axis(QCPAxis::atRight, 0));
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QColor color1(100, 140, 180);
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QPen pen;
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pen.setStyle(Qt::PenStyle::SolidLine);
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pen.setColor(color1);
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mGraph1->setPen(pen);
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color1.setAlpha(100);
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mPlot->graph(0)->setBrush(QBrush(color1));
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mPlot->graph(0)->setName("sin(t)+sin(t/0.38)");
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mGraph2 = mPlot->addGraph(mPlot->xAxis, mPlot->axisRect()->axis(QCPAxis::atRight, 0));
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QColor color2(166, 77, 157);
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pen.setStyle(Qt::PenStyle::SolidLine);
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pen.setColor(color2);
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mGraph2->setPen(pen);
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color2.setAlpha(100);
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mPlot->graph(1)->setBrush(QBrush(color2));
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mPlot->graph(1)->setName("sin(t)");
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QSharedPointer<QCPAxisTickerTime> timeTicker(new QCPAxisTickerTime);
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timeTicker->setTimeFormat("%h:%m:%s");
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mPlot->xAxis->setTicker(timeTicker);
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mPlot->xAxis->setRange(0, 16);
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mPlot->yAxis->setRange(-2.2, 2.2);
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mPlot->xAxis->setLabel("time");
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mPlot->yAxis->setLabel("value");
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mPlot->plotLayout()->insertRow(0);
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QCPTextElement* title = new QCPTextElement(mPlot, "Realtime Data Display");
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mPlot->plotLayout()->addElement(0, 0, title);
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connect(mPlot, &QCustomPlot::mousePress, this, [=] { xAxisAutoChange = false; });
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connect(mPlot, &QCustomPlot::mouseRelease, this, [=] { xAxisAutoChange = true; });
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mPlot->setInteractions(QCP::iRangeDrag);
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QList<QCPAxis*>list;
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list.append(mPlot->xAxis);
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mPlot->axisRect()->setRangeDragAxes(list);
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mPlot->axisRect()->setupFullAxesBox();
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mTimerThread = new QThread(this);
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mDataTimer = new QTimer();
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connect(mDataTimer, SIGNAL(timeout()), this, SLOT(timerSlot()), Qt::DirectConnection);
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connect(mTimerThread, &QThread::finished, mDataTimer, &QObject::deleteLater);
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connect(mTimerThread, &QThread::finished, mTimerThread, &QObject::deleteLater);
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connect(this, &realTimeDataDisplay::updateUICustomPlot, this, &realTimeDataDisplay::onUpdateUICustomPlot);
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mTimerThread->start();
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mDataTimer->start(16);
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mDataTimer->moveToThread(mTimerThread);
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qDebug() << "this Thread:" << QThread::currentThreadId() << QThread::currentThread();
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mTag1 = new AxisTag(mGraph1->valueAxis());
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mTag1->setPen(mGraph1->pen());
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mTag2 = new AxisTag(mGraph2->valueAxis());
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mTag2->setPen(mGraph2->pen());
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mPlot->legend->setVisible(true);
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mPlot->legend->setBrush(QColor(255, 255, 255, 150));
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}
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realTimeDataDisplay::~realTimeDataDisplay()
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{
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if (mDataTimer)
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{
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mTimerThread->quit();
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mTimerThread->wait();
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//connect: &QObject::deleteLater，不需要delete
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mTimerThread = nullptr;
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mDataTimer = nullptr;
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}
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}
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void realTimeDataDisplay::onUpdateUICustomPlot(double key, double v1, double v2)
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{
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if (xAxisAutoChange)
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mPlot->xAxis->setRange(key, 16, Qt::AlignRight);
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mTag1->updatePosition(v1);
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mTag2->updatePosition(v2);
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if (v1 > 0)
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mTag1->setText("+" + QString::number(v1, 'f', 2));
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else
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mTag1->setText(QString::number(v1, 'f', 2));
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if (v2 > 0)
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mTag2->setText("+" + QString::number(v2, 'f', 2));
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else
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mTag2->setText(QString::number(v2, 'f', 2));
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mPlot->replot();
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}
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void realTimeDataDisplay::timerSlot()
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{
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//qDebug() << "timerSlot Thread:" << QThread::currentThreadId() << QThread::currentThread();
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static QTime timeStart = QTime::currentTime();
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double key = timeStart.msecsTo(QTime::currentTime()) / 1000.0;
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static double lastFpsKey;
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static int frameCount;
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++frameCount;
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if (key - lastFpsKey > 2) // average fps over 2 seconds
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{
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ui.statusBar->showMessage(QString("%1 FPS").arg(frameCount / (key - lastFpsKey), 0, 'f', 0), 0);
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lastFpsKey = key;
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frameCount = 0;
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}
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mPlot->graph(0)->addData(key, qSin(key) + qSin(key / 0.3843));
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mPlot->graph(1)->addData(key, qSin(key));
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double graph1Value = mGraph1->dataMainValue(mGraph1->dataCount() - 1);
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double graph2Value = mGraph2->dataMainValue(mGraph2->dataCount() - 1);
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emit updateUICustomPlot(key, graph1Value, graph2Value);
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//mTag1->updatePosition(graph1Value);
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//mTag2->updatePosition(graph2Value);
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//if (graph1Value > 0)
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// mTag1->setText("+" + QString::number(graph1Value, 'f', 2));
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//else
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// mTag1->setText(QString::number(graph1Value, 'f', 2));
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//if (graph2Value > 0)
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// mTag2->setText("+" + QString::number(graph2Value, 'f', 2));
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//else
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// mTag2->setText(QString::number(graph2Value, 'f', 2));
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//mPlot->replot();
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}
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