| @@ -1,46 +1,76 | |||||
| 1 | #include "Visualization/VisualizationGraphRenderingDelegate.h" |
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1 | #include "Visualization/VisualizationGraphRenderingDelegate.h" | |
| 2 | #include "Visualization/qcustomplot.h" |
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2 | #include "Visualization/qcustomplot.h" | |
| 3 |
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3 | |||
| 4 | namespace { |
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4 | namespace { | |
| 5 |
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5 | |||
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6 | const auto DATETIME_FORMAT = QStringLiteral("yyyy/MM/dd hh:mm:ss:zzz"); | |||
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7 | ||||
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8 | const auto TEXT_TRACER_FORMAT = QStringLiteral("key: %1\nvalue: %2"); | |||
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9 | ||||
| 6 | /// Timeout after which a tracer is displayed |
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10 | /// Timeout after which a tracer is displayed | |
| 7 | const auto TRACER_TIMEOUT = 500; |
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11 | const auto TRACER_TIMEOUT = 500; | |
| 8 |
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12 | |||
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13 | /// Formats a data value according to the axis on which it is present | |||
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14 | QString formatValue(double value, const QCPAxis &axis) | |||
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15 | { | |||
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16 | // If the axis is a time axis, formats the value as a date | |||
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17 | return qSharedPointerDynamicCast<QCPAxisTickerDateTime>(axis.ticker()) | |||
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18 | ? QCPAxisTickerDateTime::keyToDateTime(value).toString(DATETIME_FORMAT) | |||
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19 | : QString::number(value); | |||
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20 | } | |||
| 9 | } // namespace |
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21 | } // namespace | |
| 10 |
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22 | |||
| 11 | struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate { |
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23 | struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate { | |
| 12 | explicit VisualizationGraphRenderingDelegatePrivate(QCustomPlot &plot) |
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24 | explicit VisualizationGraphRenderingDelegatePrivate(QCustomPlot &plot) | |
| 13 | : m_Plot{plot}, |
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25 | : m_Plot{plot}, | |
| 14 | m_PointTracer{new QCPItemTracer{&plot}}, |
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26 | m_PointTracer{new QCPItemTracer{&plot}}, | |
| 15 | m_TextTracer{new QCPItemText{&plot}}, |
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27 | m_TextTracer{new QCPItemText{&plot}}, | |
| 16 | m_TracerTimer{} |
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28 | m_TracerTimer{} | |
| 17 | { |
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29 | { | |
| 18 |
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30 | |||
| 19 | m_TracerTimer.setInterval(TRACER_TIMEOUT); |
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31 | m_TracerTimer.setInterval(TRACER_TIMEOUT); | |
| 20 | m_TracerTimer.setSingleShot(true); |
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32 | m_TracerTimer.setSingleShot(true); | |
| 21 | } |
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33 | } | |
| 22 |
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34 | |||
| 23 | QCustomPlot &m_Plot; |
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35 | QCustomPlot &m_Plot; | |
| 24 | QCPItemTracer *m_PointTracer; |
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36 | QCPItemTracer *m_PointTracer; | |
| 25 | QCPItemText *m_TextTracer; |
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37 | QCPItemText *m_TextTracer; | |
| 26 | QTimer m_TracerTimer; |
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38 | QTimer m_TracerTimer; | |
| 27 | }; |
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39 | }; | |
| 28 |
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40 | |||
| 29 | VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(QCustomPlot &plot) |
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41 | VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(QCustomPlot &plot) | |
| 30 | : impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(plot)} |
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42 | : impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(plot)} | |
| 31 | { |
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43 | { | |
| 32 | } |
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44 | } | |
| 33 |
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45 | |||
| 34 | void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexcept |
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46 | void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexcept | |
| 35 | { |
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47 | { | |
| 36 | // Cancels pending refresh |
|
48 | // Cancels pending refresh | |
| 37 | impl->m_TracerTimer.disconnect(); |
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49 | impl->m_TracerTimer.disconnect(); | |
| 38 |
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50 | |||
| 39 | auto showTracers = [ eventPos = event->pos(), this ]() |
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51 | auto showTracers = [ eventPos = event->pos(), this ]() | |
| 40 | { |
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52 | { | |
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53 | // Reinits tracers | |||
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54 | impl->m_PointTracer->setGraph(nullptr); | |||
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55 | impl->m_PointTracer->setVisible(false); | |||
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56 | impl->m_TextTracer->setVisible(false); | |||
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57 | impl->m_Plot.replot(); | |||
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58 | ||||
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59 | // Gets the graph under the mouse position | |||
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60 | if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) { | |||
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61 | auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x()); | |||
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62 | auto graphData = graph->data(); | |||
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63 | ||||
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64 | // Gets the closest data point to the mouse | |||
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65 | auto graphDataIt = graphData->findBegin(mouseKey); | |||
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66 | if (graphDataIt != graphData->constEnd()) { | |||
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67 | auto key = formatValue(graphDataIt->key, *graph->keyAxis()); | |||
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68 | auto value = formatValue(graphDataIt->value, *graph->valueAxis()); | |||
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69 | impl->m_TextTracer->setText(TEXT_TRACER_FORMAT.arg(key, value)); | |||
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70 | } | |||
| 41 | }; |
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71 | }; | |
| 42 |
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72 | |||
| 43 | // Starts the timer to display tracers at timeout |
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73 | // Starts the timer to display tracers at timeout | |
| 44 | QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTracers); |
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74 | QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTracers); | |
| 45 | impl->m_TracerTimer.start(); |
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75 | impl->m_TracerTimer.start(); | |
| 46 | } |
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76 | } | |
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