QT用QWT绘制心电图、脉氧饱和度波形图、波形图

#include "PlotBloodOxygenWave.h" #include "MCustomAssembly.h" #include "MCycleCurveData.h" #include "MPlotMagnifier.h" #include "QwtPlotDefine.h" #include "MPlotWaveCurve.h" #include <QDebug> #include <QElapsedTimer> #include <QTimerEvent> #include <qwt_plot.h> #include <qwt_plot_grid.h> #include <qwt_plot_marker.h> #include <qwt_legend.h> #include <qwt_plot_panner.h> #include <qwt_plot_zoomer.h> #include <qwt_plot_curve.h> #include <qwt_plot_directpainter.h> #include <qwt_symbol.h> #include <qwt_picker_machine.h> #include <windows.h> void CALLBACK TimerCallback(PVOID lpParameter, BOOLEAN TimerOrWaitFired); class PlotBloodOxygenWave::PrivateData { public: MPlotMagnifier *pMagnifier = nullptr; QwtPanner *pPanner = nullptr; QwtPicker *pPicker = nullptr; MPlotWaveCurve *pPOCurve = nullptr; MCycleCurveData *pWaveData = nullptr; QwtPlotDirectPainter *pDirectPainter = nullptr; QwtInterval interval; unsigned m_uSamplingRate = 33; int DrawTimerId = 0; HANDLE hTimer = NULL; QElapsedTimer elapsed; unsigned uPlotIntervalCount = 0; EDrawStatus eStatus = EDS_UNKNOWN; unsigned uReservePointRatio = 66; ~PrivateData() { if (pDirectPainter) { delete pDirectPainter; pDirectPainter = nullptr; } } }; PlotBloodOxygenWave::PlotBloodOxygenWave(QwtPlot *plot) : QObject(plot) { m_pPlot = plot; m_uDrawCounter = 0; m_uDataCheckCounter = 0; m_uDataCheckInterval = 30; data = new PrivateData; data->pWaveData = new MCycleCurveData(); data->pDirectPainter = new QwtPlotDirectPainter; data->interval.setMaxValue(5000); data->elapsed.start(); } PlotBloodOxygenWave::~PlotBloodOxygenWave() { m_pPlot = nullptr; delete data; data = nullptr; } void PlotBloodOxygenWave::SetParam(unsigned uSamplingRate, double dXAxisWidth, unsigned uPlotIntervalTime) { data->m_uSamplingRate = uSamplingRate; data->pWaveData->SetParam(uSamplingRate, dXAxisWidth); dXAxisWidth *= 1000; if (dXAxisWidth > 1000 && dXAxisWidth != data->interval.width() ) { data->interval.setMaxValue(data->interval.minValue() + dXAxisWidth); m_pPlot->setAxisScale(QwtPlot::xBottom, data->interval.minValue(), data->interval.maxValue()); } unsigned uIntervalTime = data->pWaveData->GetTimeInterval(); unsigned uPlotIntervalCount = round( uPlotIntervalTime / uIntervalTime); if(uPlotIntervalCount > 0 && uPlotIntervalCount != data->uPlotIntervalCount) { data->uPlotIntervalCount = uPlotIntervalCount; } if (data->hTimer) { ::ChangeTimerQueueTimer(NULL, data->hTimer, uIntervalTime, uIntervalTime); } if(data->DrawTimerId) //如果开启了绘制定时器，则重置 { killTimer(data->DrawTimerId); data->DrawTimerId = startTimer( uIntervalTime ); } if (EDS_UNKNOWN != data->eStatus) { m_pPlot->replot(); } } void PlotBloodOxygenWave::BuildPlot() { InitPlot(); //AddPlotGrid(); // AddLegend(); //AddPanner(); //AddPicker(); AddWaveCurve(); data->eStatus = EDS_STOP; } void PlotBloodOxygenWave::Start() { if (EDS_START != data->eStatus) { data->eStatus = EDS_START; data->elapsed.restart(); unsigned uTimerInterval = data->pWaveData->GetTimeInterval(); if (!::CreateTimerQueueTimer(&data->hTimer, NULL, TimerCallback, this, uTimerInterval, uTimerInterval, WT_EXECUTEDEFAULT)) { qDebug() << QString::fromLocal8Bit("创建脉氧波取值定时器失败！"); data->hTimer = nullptr; } data->DrawTimerId = startTimer(uTimerInterval); } } void PlotBloodOxygenWave::Stop() { if (EDS_START == data->eStatus) { data->eStatus = EDS_STOP; if (data->hTimer) ::DeleteTimerQueueTimer(nullptr, data->hTimer, INVALID_HANDLE_VALUE); data->hTimer = nullptr; killTimer(data->DrawTimerId); data->DrawTimerId = 0; } } void PlotBloodOxygenWave::Reset() { data->pWaveData->Reset(); data->interval = data->pWaveData->GetXAxisInterval(); m_pPlot->setAxisScale(QwtPlot::xBottom, data->interval.minValue(), data->interval.maxValue()); } void PlotBloodOxygenWave::AddWaveData(QList<unsigned char> list) { if (EDS_START != data->eStatus) return; unsigned iSize = data->pWaveData->AddPendingValues(list); if (0 != m_uDataCheckCounter++ % m_uDataCheckInterval) return; //30s检测一次 double dValue = (double)iSize / data->m_uSamplingRate; qDebug() << QString::fromLocal8Bit("当前缓存的数据为:%1个，比值:%2") .arg(iSize).arg(dValue); if (dValue < 1.5) //实际只剩10条数据 { if (1 != data->uReservePointRatio) { data->uReservePointRatio = 1; m_uDataCheckInterval = 30; unsigned uTimeInterval = data->pWaveData->GetTimeInterval() + 2; ::ChangeTimerQueueTimer(NULL, data->hTimer, uTimeInterval, uTimeInterval); qDebug() << QString::fromLocal8Bit("当前取值间隔为:%1").arg(uTimeInterval); } } else if (dValue < 2.1) //只有1秒以内数据 { if (2 != data->uReservePointRatio) { data->uReservePointRatio = 2; m_uDataCheckInterval = 30; unsigned uTimeInterval = data->pWaveData->GetTimeInterval() + 1; ::ChangeTimerQueueTimer(NULL, data->hTimer, uTimeInterval, uTimeInterval); qDebug() << QString::fromLocal8Bit("当前取值间隔为:%1").arg(uTimeInterval); } } else if (dValue < 3.1) //只有2秒以内数据 { if (3 != data->uReservePointRatio) { data->uReservePointRatio = 3; m_uDataCheckInterval = 30; unsigned uTimeInterval = data->pWaveData->GetTimeInterval(); ::ChangeTimerQueueTimer(NULL, data->hTimer, uTimeInterval, uTimeInterval); qDebug() << QString::fromLocal8Bit("当前取值间隔为:%1").arg(uTimeInterval); } } else if (dValue < 4.1) //只有3秒以内数据 { if (4 != data->uReservePointRatio) { data->uReservePointRatio = 4; m_uDataCheckInterval = 30; unsigned uTimeInterval = data->pWaveData->GetTimeInterval() - 1; ::ChangeTimerQueueTimer(NULL, data->hTimer, uTimeInterval, uTimeInterval); qDebug() << QString::fromLocal8Bit("当前取值间隔为:%1").arg(uTimeInterval); } } else if (dValue < 5.1) //实际大于4秒数据 { if( 5 != data->uReservePointRatio) { data->uReservePointRatio = 5; m_uDataCheckInterval = 30; unsigned uTimeInterval = data->pWaveData->GetTimeInterval() - 2; ::ChangeTimerQueueTimer(NULL, data->hTimer, uTimeInterval, uTimeInterval); qDebug() << QString::fromLocal8Bit("当前取值间隔为:%1").arg(uTimeInterval); } } else if(10 != data->uReservePointRatio) { data->uReservePointRatio = 10; m_uDataCheckInterval = 6; unsigned uTimeInterval = data->pWaveData->GetTimeInterval() - 10; ::ChangeTimerQueueTimer(NULL, data->hTimer, uTimeInterval, uTimeInterval); qDebug() << QString::fromLocal8Bit("当前取值间隔为:%1").arg(uTimeInterval); } } void PlotBloodOxygenWave::DrawHistoryData(quint64 ulStartTime, QVector<unsigned char> list) { data->eStatus = EDS_HISTORY; data->pWaveData->AddHistoryData(ulStartTime, list); //刷新坐标轴 QwtInterval interval = data->pWaveData->GetXAxisInterval(); data->interval = QwtInterval(interval.maxValue() - data->interval.width(), interval.maxValue()); m_pPlot->setAxisScale(QwtPlot::xBottom, data->interval.minValue(), data->interval.maxValue()); data->pPOCurve->SetCurrentPoint(-1); //重绘 m_pPlot->replot(); } void PlotBloodOxygenWave::InitPlot() { //设置标题 // m_pPlot->setTitle("My Project"); //设置画布或背景 m_pPlot->setCanvas( new MCanvas() ); m_pPlot->setCanvasBackground(Qt::white); //设置坐标轴的名称 // m_pPlot->setAxisTitle(QwtPlot::xBottom, QStringLiteral("X轴")); //