@@ -7,10 +7,13 namespace { | |||
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7 | 7 | |
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8 | 8 | const auto DATETIME_FORMAT = QStringLiteral("yyyy/MM/dd hh:mm:ss:zzz"); |
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9 | 9 | |
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10 |
const auto T |
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10 | const auto TOOLTIP_FORMAT = QStringLiteral("key: %1\nvalue: %2"); | |
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11 | 11 | |
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12 | /// Timeout after which a tracer is displayed | |
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13 | const auto TRACER_TIMEOUT = 500; | |
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12 | /// Tooltip display rectangle (the tooltip is hidden when the mouse leaves this rectangle) | |
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13 | const auto TOOLTIP_RECT = QRect{10, 10, 10, 10}; | |
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14 | ||
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15 | /// Timeout after which the tooltip is displayed | |
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16 | const auto TOOLTIP_TIMEOUT = 500; | |
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14 | 17 | |
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15 | 18 | /// Formats a data value according to the axis on which it is present |
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16 | 19 | QString formatValue(double value, const QCPAxis &axis) |
@@ -33,34 +36,20 void initPointTracerStyle(QCPItemTracer &tracer) noexcept | |||
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33 | 36 | tracer.setSize(10); |
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34 | 37 | } |
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35 | 38 | |
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36 | void initTextTracerStyle(QCPItemText &tracer) noexcept | |
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37 | { | |
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38 | tracer.setPen(QPen{Qt::gray}); | |
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39 | tracer.setBrush(Qt::white); | |
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40 | tracer.setPadding(QMargins{6, 6, 6, 6}); | |
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41 | tracer.setPositionAlignment(Qt::AlignTop | Qt::AlignLeft); | |
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42 | tracer.setTextAlignment(Qt::AlignLeft); | |
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43 | } | |
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44 | ||
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45 | 39 | } // namespace |
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46 | 40 | |
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47 | 41 | struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate { |
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48 | 42 | explicit VisualizationGraphRenderingDelegatePrivate(QCustomPlot &plot) |
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49 | : m_Plot{plot}, | |
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50 | m_PointTracer{new QCPItemTracer{&plot}}, | |
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51 | m_TextTracer{new QCPItemText{&plot}}, | |
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52 | m_TracerTimer{} | |
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43 | : m_Plot{plot}, m_PointTracer{new QCPItemTracer{&plot}}, m_TracerTimer{} | |
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53 | 44 | { |
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54 | 45 | initPointTracerStyle(*m_PointTracer); |
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55 | initTextTracerStyle(*m_TextTracer); | |
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56 | 46 | |
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57 |
m_TracerTimer.setInterval(T |
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47 | m_TracerTimer.setInterval(TOOLTIP_TIMEOUT); | |
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58 | 48 | m_TracerTimer.setSingleShot(true); |
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59 | 49 | } |
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60 | 50 | |
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61 | 51 | QCustomPlot &m_Plot; |
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62 | 52 | QCPItemTracer *m_PointTracer; |
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63 | QCPItemText *m_TextTracer; | |
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64 | 53 | QTimer m_TracerTimer; |
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65 | 54 | }; |
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66 | 55 | |
@@ -74,50 +63,40 void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexce | |||
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74 | 63 | // Cancels pending refresh |
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75 | 64 | impl->m_TracerTimer.disconnect(); |
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76 | 65 | |
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77 | auto showTracers = [ eventPos = event->pos(), this ]() | |
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78 | { | |
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79 | // Lambda function to display a tracer | |
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80 | auto displayTracer = [this](auto &tracer) { | |
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81 | // Tracer is set on top of the plot's main layer | |
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82 | tracer.setLayer(impl->m_Plot.layer("main")); | |
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83 | tracer.setVisible(true); | |
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66 | // Reinits tracers | |
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67 | impl->m_PointTracer->setGraph(nullptr); | |
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68 | impl->m_PointTracer->setVisible(false); | |
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69 | impl->m_Plot.replot(); | |
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70 | ||
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71 | // Gets the graph under the mouse position | |
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72 | auto eventPos = event->pos(); | |
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73 | if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) { | |
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74 | auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x()); | |
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75 | auto graphData = graph->data(); | |
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76 | ||
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77 | // Gets the closest data point to the mouse | |
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78 | auto graphDataIt = graphData->findBegin(mouseKey); | |
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79 | if (graphDataIt != graphData->constEnd()) { | |
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80 | auto key = formatValue(graphDataIt->key, *graph->keyAxis()); | |
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81 | auto value = formatValue(graphDataIt->value, *graph->valueAxis()); | |
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82 | ||
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83 | // Displays point tracer | |
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84 | impl->m_PointTracer->setGraph(graph); | |
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85 | impl->m_PointTracer->setGraphKey(graphDataIt->key); | |
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86 | impl->m_PointTracer->setLayer( | |
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87 | impl->m_Plot.layer("main")); // Tracer is set on top of the plot's main layer | |
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88 | impl->m_PointTracer->setVisible(true); | |
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84 | 89 | impl->m_Plot.replot(); |
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85 | }; | |
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86 | ||
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87 | // Reinits tracers | |
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88 | impl->m_PointTracer->setGraph(nullptr); | |
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89 | impl->m_PointTracer->setVisible(false); | |
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90 | impl->m_TextTracer->setVisible(false); | |
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91 | impl->m_Plot.replot(); | |
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92 | ||
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93 | // Gets the graph under the mouse position | |
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94 | if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) { | |
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95 | auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x()); | |
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96 | auto graphData = graph->data(); | |
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97 | ||
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98 | // Gets the closest data point to the mouse | |
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99 | auto graphDataIt = graphData->findBegin(mouseKey); | |
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100 | if (graphDataIt != graphData->constEnd()) { | |
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101 | auto key = formatValue(graphDataIt->key, *graph->keyAxis()); | |
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102 | auto value = formatValue(graphDataIt->value, *graph->valueAxis()); | |
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103 | impl->m_TextTracer->setText(TEXT_TRACER_FORMAT.arg(key, value)); | |
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104 | ||
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105 | // Displays point tracer | |
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106 | impl->m_PointTracer->setGraph(graph); | |
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107 | impl->m_PointTracer->setGraphKey(graphDataIt->key); | |
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108 | displayTracer(*impl->m_PointTracer); | |
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109 | ||
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110 | // Displays text tracer | |
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111 | auto tracerPosition = impl->m_TextTracer->position; | |
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112 | tracerPosition->setAxes(graph->keyAxis(), graph->valueAxis()); | |
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113 | tracerPosition->setCoords(impl->m_PointTracer->position->key(), | |
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114 | impl->m_PointTracer->position->value()); | |
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115 | displayTracer(*impl->m_TextTracer); | |
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116 | } | |
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117 | } | |
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118 | }; | |
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119 | 90 | |
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120 |
// Starts t |
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121 | QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTracers); | |
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122 | impl->m_TracerTimer.start(); | |
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91 | // Starts timer to show tooltip after timeout | |
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92 | auto showTooltip = [ tooltip = TOOLTIP_FORMAT.arg(key, value), eventPos, this ]() | |
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93 | { | |
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94 | QToolTip::showText(impl->m_Plot.mapToGlobal(eventPos), tooltip, &impl->m_Plot, | |
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95 | TOOLTIP_RECT); | |
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96 | }; | |
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97 | ||
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98 | QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTooltip); | |
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99 | impl->m_TracerTimer.start(); | |
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100 | } | |
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101 | } | |
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123 | 102 | } |
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