| @@ -1,123 +1,123 | |||
|
|
1 | 1 | #include "Visualization/VisualizationGraphRenderingDelegate.h" |
|
|
2 | 2 | #include "Visualization/qcustomplot.h" |
|
|
3 | 3 | |
|
|
4 | 4 | #include <Common/DateUtils.h> |
|
|
5 | 5 | |
|
|
6 | 6 | namespace { |
|
|
7 | 7 | |
|
|
8 | 8 | const auto DATETIME_FORMAT = QStringLiteral("yyyy/MM/dd hh:mm:ss:zzz"); |
|
|
9 | 9 | |
|
|
10 | 10 | const auto TEXT_TRACER_FORMAT = QStringLiteral("key: %1\nvalue: %2"); |
|
|
11 | 11 | |
|
|
12 | 12 | /// Timeout after which a tracer is displayed |
|
|
13 | 13 | const auto TRACER_TIMEOUT = 500; |
|
|
14 | 14 | |
|
|
15 | 15 | /// Formats a data value according to the axis on which it is present |
|
|
16 | 16 | QString formatValue(double value, const QCPAxis &axis) |
|
|
17 | 17 | { |
|
|
18 | 18 | // If the axis is a time axis, formats the value as a date |
|
|
19 | 19 | if (auto axisTicker = qSharedPointerDynamicCast<QCPAxisTickerDateTime>(axis.ticker())) { |
|
|
20 | 20 | return DateUtils::dateTime(value, axisTicker->dateTimeSpec()).toString(DATETIME_FORMAT); |
|
|
21 | 21 | } |
|
|
22 | 22 | else { |
|
|
23 | 23 | return QString::number(value); |
|
|
24 | 24 | } |
|
|
25 | 25 | } |
|
|
26 | 26 | |
|
|
27 | 27 | void initPointTracerStyle(QCPItemTracer &tracer) noexcept |
|
|
28 | 28 | { |
|
|
29 | 29 | tracer.setInterpolating(false); |
|
|
30 | 30 | tracer.setStyle(QCPItemTracer::tsPlus); |
|
|
31 | 31 | tracer.setPen(QPen(Qt::black)); |
|
|
32 | 32 | tracer.setBrush(Qt::black); |
|
|
33 | 33 | tracer.setSize(10); |
|
|
34 | 34 | } |
|
|
35 | 35 | |
|
|
36 | 36 | void initTextTracerStyle(QCPItemText &tracer) noexcept |
|
|
37 | 37 | { |
|
|
38 | 38 | tracer.setPen(QPen{Qt::gray}); |
|
|
39 | 39 | tracer.setBrush(Qt::white); |
|
|
40 | 40 | tracer.setPadding(QMargins{6, 6, 6, 6}); |
|
|
41 | 41 | tracer.setPositionAlignment(Qt::AlignTop | Qt::AlignLeft); |
|
|
42 | 42 | tracer.setTextAlignment(Qt::AlignLeft); |
|
|
43 | 43 | } |
|
|
44 | 44 | |
|
|
45 | 45 | } // namespace |
|
|
46 | 46 | |
|
|
47 | 47 | struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate { |
|
|
48 | 48 | explicit VisualizationGraphRenderingDelegatePrivate(QCustomPlot &plot) |
|
|
49 | 49 | : m_Plot{plot}, |
|
|
50 | 50 | m_PointTracer{new QCPItemTracer{&plot}}, |
|
|
51 | 51 | m_TextTracer{new QCPItemText{&plot}}, |
|
|
52 | 52 | m_TracerTimer{} |
|
|
53 | 53 | { |
|
|
54 | 54 | initPointTracerStyle(*m_PointTracer); |
|
|
55 | 55 | initTextTracerStyle(*m_TextTracer); |
|
|
56 | 56 | |
|
|
57 | 57 | m_TracerTimer.setInterval(TRACER_TIMEOUT); |
|
|
58 | 58 | m_TracerTimer.setSingleShot(true); |
|
|
59 | 59 | } |
|
|
60 | 60 | |
|
|
61 | 61 | QCustomPlot &m_Plot; |
|
|
62 | 62 | QCPItemTracer *m_PointTracer; |
|
|
63 | 63 | QCPItemText *m_TextTracer; |
|
|
64 | 64 | QTimer m_TracerTimer; |
|
|
65 | 65 | }; |
|
|
66 | 66 | |
|
|
67 | 67 | VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(QCustomPlot &plot) |
|
|
68 | 68 | : impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(plot)} |
|
|
69 | 69 | { |
|
|
70 | 70 | } |
|
|
71 | 71 | |
|
|
72 | 72 | void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexcept |
|
|
73 | 73 | { |
|
|
74 | 74 | // Cancels pending refresh |
|
|
75 | 75 | impl->m_TracerTimer.disconnect(); |
|
|
76 | 76 | |
|
|
77 | 77 | auto showTracers = [ eventPos = event->pos(), this ]() |
|
|
78 | 78 | { |
|
|
79 | 79 | // Lambda function to display a tracer |
|
|
80 | 80 | auto displayTracer = [this](auto &tracer) { |
|
|
81 | 81 | // Tracer is set on top of the plot's main layer |
|
|
82 | 82 | tracer.setLayer(impl->m_Plot.layer("main")); |
|
|
83 | 83 | tracer.setVisible(true); |
|
|
84 | 84 | impl->m_Plot.replot(); |
|
|
85 | 85 | }; |
|
|
86 | 86 | |
|
|
87 | 87 | // Reinits tracers |
|
|
88 | 88 | impl->m_PointTracer->setGraph(nullptr); |
|
|
89 | 89 | impl->m_PointTracer->setVisible(false); |
|
|
90 | 90 | impl->m_TextTracer->setVisible(false); |
|
|
91 | 91 | impl->m_Plot.replot(); |
|
|
92 | 92 | |
|
|
93 | 93 | // Gets the graph under the mouse position |
|
|
94 | 94 | if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) { |
|
|
95 | 95 | auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x()); |
|
|
96 | 96 | auto graphData = graph->data(); |
|
|
97 | 97 | |
|
|
98 | 98 | // Gets the closest data point to the mouse |
|
|
99 | 99 | auto graphDataIt = graphData->findBegin(mouseKey); |
|
|
100 | 100 | if (graphDataIt != graphData->constEnd()) { |
|
|
101 | 101 | auto key = formatValue(graphDataIt->key, *graph->keyAxis()); |
|
|
102 | 102 | auto value = formatValue(graphDataIt->value, *graph->valueAxis()); |
|
|
103 | 103 | impl->m_TextTracer->setText(TEXT_TRACER_FORMAT.arg(key, value)); |
|
|
104 | 104 | |
|
|
105 | 105 | // Displays point tracer |
|
|
106 | 106 | impl->m_PointTracer->setGraph(graph); |
|
|
107 |
impl->m_PointTracer->setGraphKey( |
|
|
|
107 | impl->m_PointTracer->setGraphKey(graphDataIt->key); | |
|
|
108 | 108 | displayTracer(*impl->m_PointTracer); |
|
|
109 | 109 | |
|
|
110 | 110 | // Displays text tracer |
|
|
111 | 111 | auto tracerPosition = impl->m_TextTracer->position; |
|
|
112 | 112 | tracerPosition->setAxes(graph->keyAxis(), graph->valueAxis()); |
|
|
113 | 113 | tracerPosition->setCoords(impl->m_PointTracer->position->key(), |
|
|
114 | 114 | impl->m_PointTracer->position->value()); |
|
|
115 | 115 | displayTracer(*impl->m_TextTracer); |
|
|
116 | 116 | } |
|
|
117 | 117 | } |
|
|
118 | 118 | }; |
|
|
119 | 119 | |
|
|
120 | 120 | // Starts the timer to display tracers at timeout |
|
|
121 | 121 | QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTracers); |
|
|
122 | 122 | impl->m_TracerTimer.start(); |
|
|
123 | 123 | } |
General Comments 0
You need to be logged in to leave comments.
Login now