GIT_REPOSITORIES/LPP/Users/mperrinel/SciQLop-fork Files · gui/src/Visualization/VisualizationGraphRenderingDelegate.cpp

Fix some glitches which occurred when dragging in the visualization something from the sides.

Alexandre Leroux - - Load All Authors

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                r886:4ed691514436

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             VisualizationGraphRenderingDelegate.cpp
        
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        Alexandre Leroux
    
Creates a delegate offering methods for rendering a graph

              r480
            
      #include "Visualization/VisualizationGraphRenderingDelegate.h"

        Alexandre Leroux
    
Passes directly GraphWidget in delegate...

              r725
            
      #include "Visualization/VisualizationGraphWidget.h"

        Alexandre Leroux
    
Creates a delegate offering methods for rendering a graph

              r480
            
      #include "Visualization/qcustomplot.h"

        Alexandre Leroux
    
Uses the same time spec (UTC) as axis for tooltips on graph

              r490
            
      #include <Common/DateUtils.h>

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
      #include <Data/IDataSeries.h>

        Alexandre Leroux
    
Adds title and close items in plot overlay

              r726
            
      #include <SqpApplication.h>

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
      namespace {

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
      /// Name of the axes layer in QCustomPlot

      const auto AXES_LAYER = QStringLiteral("axes");

        Alexandre Leroux
    
Show tracers method (1)...

              r483
            
      const auto DATETIME_FORMAT = QStringLiteral("yyyy/MM/dd hh:mm:ss:zzz");

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
      /// Format for datetimes on a axis

      const auto DATETIME_TICKER_FORMAT = QStringLiteral("yyyy/MM/dd \nhh:mm:ss");

      /// Icon used to show x-axis properties

      const auto HIDE_AXIS_ICON_PATH = QStringLiteral(":/icones/down.png");

        Alexandre Leroux
    
Adds title and close items in plot overlay

              r726
            
      /// Name of the overlay layer in QCustomPlot

      const auto OVERLAY_LAYER = QStringLiteral("overlay");

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
      /// Pixmap used to show x-axis properties

      const auto SHOW_AXIS_ICON_PATH = QStringLiteral(":/icones/up.png");

        Alexandre Leroux
    
Uses Qt tooltips instead of QCPTextItem...

              r576
            
      const auto TOOLTIP_FORMAT = QStringLiteral("key: %1\nvalue: %2");

        Alexandre Leroux
    
Show tracers method (1)...

              r483
            
        Alexandre Leroux
    
Shifts tooltip to mouse

              r578
            
      /// Offset used to shift the tooltip of the mouse

      const auto TOOLTIP_OFFSET = QPoint{20, 20};

        Alexandre Leroux
    
Uses Qt tooltips instead of QCPTextItem...

              r576
            
      /// Tooltip display rectangle (the tooltip is hidden when the mouse leaves this rectangle)

      const auto TOOLTIP_RECT = QRect{10, 10, 10, 10};

      /// Timeout after which the tooltip is displayed

      const auto TOOLTIP_TIMEOUT = 500;

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
      /// Generates the appropriate ticker for an axis, depending on whether the axis displays time or

      /// non-time data

      QSharedPointer<QCPAxisTicker> axisTicker(bool isTimeAxis)

      {

          if (isTimeAxis) {

              auto dateTicker = QSharedPointer<QCPAxisTickerDateTime>::create();

              dateTicker->setDateTimeFormat(DATETIME_TICKER_FORMAT);

              dateTicker->setDateTimeSpec(Qt::UTC);

              return dateTicker;

          }

          else {

              // default ticker

              return QSharedPointer<QCPAxisTicker>::create();

          }

      }

        Alexandre Leroux
    
Show tracers method (1)...

              r483
            
      /// Formats a data value according to the axis on which it is present

      QString formatValue(double value, const QCPAxis &axis)

      {

          // If the axis is a time axis, formats the value as a date

        Alexandre Leroux
    
Uses the same time spec (UTC) as axis for tooltips on graph

              r490
            
          if (auto axisTicker = qSharedPointerDynamicCast<QCPAxisTickerDateTime>(axis.ticker())) {

              return DateUtils::dateTime(value, axisTicker->dateTimeSpec()).toString(DATETIME_FORMAT);

          }

          else {

              return QString::number(value);

          }

        Alexandre Leroux
    
Show tracers method (1)...

              r483
            
      }

        Alexandre Leroux
    
Sets tracers' styles

              r485
            
      void initPointTracerStyle(QCPItemTracer &tracer) noexcept

      {

          tracer.setInterpolating(false);

        Alexandre Leroux
    
Replaces "Plus" cursor by "Circle" cursor

              r577
            
          tracer.setStyle(QCPItemTracer::tsCircle);

          tracer.setSize(3);

        Alexandre Leroux
    
Sets tracers' styles

              r485
            
          tracer.setPen(QPen(Qt::black));

          tracer.setBrush(Qt::black);

      }

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
      QPixmap pixmap(const QString &iconPath) noexcept

      {

          return QIcon{iconPath}.pixmap(QSize{16, 16});

      }

        Alexandre Leroux
    
Adds title and close items in plot overlay

              r726
            
      void initClosePixmapStyle(QCPItemPixmap &pixmap) noexcept

      {

          // Icon

          pixmap.setPixmap(

              sqpApp->style()->standardIcon(QStyle::SP_TitleBarCloseButton).pixmap(QSize{16, 16}));

          // Position

          pixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);

          pixmap.topLeft->setCoords(1, 0);

          pixmap.setClipToAxisRect(false);

          // Can be selected

          pixmap.setSelectable(true);

      }

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
      void initXAxisPixmapStyle(QCPItemPixmap &itemPixmap) noexcept

      {

          // Icon

          itemPixmap.setPixmap(pixmap(HIDE_AXIS_ICON_PATH));

          // Position

          itemPixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);

          itemPixmap.topLeft->setCoords(0, 1);

          itemPixmap.setClipToAxisRect(false);

          // Can be selected

          itemPixmap.setSelectable(true);

      }

        Alexandre Leroux
    
Adds title and close items in plot overlay

              r726
            
      void initTitleTextStyle(QCPItemText &text) noexcept

      {

          // Font and background styles

          text.setColor(Qt::gray);

          text.setBrush(Qt::white);

          // Position

          text.setPositionAlignment(Qt::AlignTop | Qt::AlignLeft);

          text.position->setType(QCPItemPosition::ptAxisRectRatio);

          text.position->setCoords(0.5, 0);

      }

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
      } // namespace

        Alexandre Leroux
    
Creates a delegate offering methods for rendering a graph

              r480
            
      struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate {

        Alexandre Leroux
    
Passes directly GraphWidget in delegate...

              r725
            
          explicit VisualizationGraphRenderingDelegatePrivate(VisualizationGraphWidget &graphWidget)

                  : m_Plot{graphWidget.plot()},

                    m_PointTracer{new QCPItemTracer{&m_Plot}},

                    m_TracerTimer{},

        Alexandre Leroux
    
Adds title and close items in plot overlay

              r726
            
                    m_ClosePixmap{new QCPItemPixmap{&m_Plot}},

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
                    m_TitleText{new QCPItemText{&m_Plot}},

                    m_XAxisPixmap{new QCPItemPixmap{&m_Plot}},

                    m_ShowXAxis{true},

                    m_XAxisLabel{}

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
          {

        Alexandre Leroux
    
Sets tracers' styles

              r485
            
              initPointTracerStyle(*m_PointTracer);

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
        Alexandre Leroux
    
Uses Qt tooltips instead of QCPTextItem...

              r576
            
              m_TracerTimer.setInterval(TOOLTIP_TIMEOUT);

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
              m_TracerTimer.setSingleShot(true);

        Alexandre Leroux
    
Adds title and close items in plot overlay

              r726
            
              // Inits "close button" in plot overlay

              m_ClosePixmap->setLayer(OVERLAY_LAYER);

              initClosePixmapStyle(*m_ClosePixmap);

        Alexandre Leroux
    
Calls 'close graph' action when selecting close item in overlay

              r727
            
              // Connects pixmap selection to graph widget closing

              QObject::connect(m_ClosePixmap, &QCPItemPixmap::selectionChanged,

                               [&graphWidget](bool selected) {

                                   if (selected) {

                                       graphWidget.close();

                                   }

                               });

        Alexandre Leroux
    
Adds title and close items in plot overlay

              r726
            
              // Inits graph name in plot overlay

              m_TitleText->setLayer(OVERLAY_LAYER);

              m_TitleText->setText(graphWidget.name());

              initTitleTextStyle(*m_TitleText);

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
              // Inits "show x-axis button" in plot overlay

              m_XAxisPixmap->setLayer(OVERLAY_LAYER);

              initXAxisPixmapStyle(*m_XAxisPixmap);

              // Connects pixmap selection to graph x-axis showing/hiding

              QObject::connect(m_XAxisPixmap, &QCPItemPixmap::selectionChanged, [this]() {

                  if (m_XAxisPixmap->selected()) {

                      // Changes the selection state and refreshes the x-axis

                      m_ShowXAxis = !m_ShowXAxis;

                      updateXAxisState();

                      m_Plot.layer(AXES_LAYER)->replot();

                      // Deselects the x-axis pixmap and updates icon

                      m_XAxisPixmap->setSelected(false);

                      m_XAxisPixmap->setPixmap(

                          pixmap(m_ShowXAxis ? HIDE_AXIS_ICON_PATH : SHOW_AXIS_ICON_PATH));

                      m_Plot.layer(OVERLAY_LAYER)->replot();

                  }

              });

          }

          /// Updates state of x-axis according to the current selection of x-axis pixmap

          /// @remarks the method doesn't call plot refresh

          void updateXAxisState() noexcept

          {

              m_Plot.xAxis->setTickLabels(m_ShowXAxis);

              m_Plot.xAxis->setLabel(m_ShowXAxis ? m_XAxisLabel : QString{});

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
          }

        Alexandre Leroux
    
Creates a delegate offering methods for rendering a graph

              r480
            
          QCustomPlot &m_Plot;

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
          QCPItemTracer *m_PointTracer;

          QTimer m_TracerTimer;

        Alexandre Leroux
    
Adds title and close items in plot overlay

              r726
            
          QCPItemPixmap *m_ClosePixmap; /// Graph's close button

          QCPItemText *m_TitleText;     /// Graph's title

        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
          QCPItemPixmap *m_XAxisPixmap;

          bool m_ShowXAxis; /// X-axis properties are shown or hidden

          QString m_XAxisLabel;

        Alexandre Leroux
    
Creates a delegate offering methods for rendering a graph

              r480
            
      };

        Alexandre Leroux
    
Passes directly GraphWidget in delegate...

              r725
            
      VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(

          VisualizationGraphWidget &graphWidget)

              : impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(graphWidget)}

        Alexandre Leroux
    
Creates a delegate offering methods for rendering a graph

              r480
            
      {

      }

        Alexandre Leroux
    
Creates method that will display a tooltip and a tracer with data point information after a while

              r481
            
      void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexcept

      {

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
          // Cancels pending refresh

          impl->m_TracerTimer.disconnect();

        Alexandre Leroux
    
Uses Qt tooltips instead of QCPTextItem...

              r576
            
          // Reinits tracers

          impl->m_PointTracer->setGraph(nullptr);

          impl->m_PointTracer->setVisible(false);

          impl->m_Plot.replot();

          // Gets the graph under the mouse position

          auto eventPos = event->pos();

          if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) {

              auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x());

              auto graphData = graph->data();

              // Gets the closest data point to the mouse

              auto graphDataIt = graphData->findBegin(mouseKey);

              if (graphDataIt != graphData->constEnd()) {

                  auto key = formatValue(graphDataIt->key, *graph->keyAxis());

                  auto value = formatValue(graphDataIt->value, *graph->valueAxis());

                  // Displays point tracer

                  impl->m_PointTracer->setGraph(graph);

                  impl->m_PointTracer->setGraphKey(graphDataIt->key);

                  impl->m_PointTracer->setLayer(

                      impl->m_Plot.layer("main")); // Tracer is set on top of the plot's main layer

                  impl->m_PointTracer->setVisible(true);

        Alexandre Leroux
    
Show tracers method (2)...

              r484
            
                  impl->m_Plot.replot();

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
        Alexandre Leroux
    
Uses Qt tooltips instead of QCPTextItem...

              r576
            
                  // Starts timer to show tooltip after timeout

                  auto showTooltip = [ tooltip = TOOLTIP_FORMAT.arg(key, value), eventPos, this ]()

                  {

        Alexandre Leroux
    
Shifts tooltip to mouse

              r578
            
                      QToolTip::showText(impl->m_Plot.mapToGlobal(eventPos) + TOOLTIP_OFFSET, tooltip,

                                         &impl->m_Plot, TOOLTIP_RECT);

        Alexandre Leroux
    
Uses Qt tooltips instead of QCPTextItem...

              r576
            
                  };

                  QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTooltip);

                  impl->m_TracerTimer.start();

              }

          }

        Alexandre Leroux
    
Creates method that will display a tooltip and a tracer with data point information after a while

              r481
            
      }

        Alexandre Leroux
    
Shows/hides plot overlay when entering/leaving graph

              r728
            
        Alexandre Leroux
    
Adds button on plot overlay to show/hide x-axis properties

              r729
            
      void VisualizationGraphRenderingDelegate::setAxesProperties(const Unit &xAxisUnit,

                                                                  const Unit &valuesUnit) noexcept

      {

          // Stores x-axis label to be able to retrieve it when x-axis pixmap is unselected

          impl->m_XAxisLabel = xAxisUnit.m_Name;

          auto setAxisProperties = [](auto axis, const auto &unit) {

              // label (unit name)

              axis->setLabel(unit.m_Name);

              // ticker (depending on the type of unit)

              axis->setTicker(axisTicker(unit.m_TimeUnit));

          };

          setAxisProperties(impl->m_Plot.xAxis, xAxisUnit);

          setAxisProperties(impl->m_Plot.yAxis, valuesUnit);

          // Updates x-axis state

          impl->updateXAxisState();

          impl->m_Plot.layer(AXES_LAYER)->replot();

      }

        Alexandre Leroux
    
Shows/hides plot overlay when entering/leaving graph

              r728
            
      void VisualizationGraphRenderingDelegate::showGraphOverlay(bool show) noexcept

      {

          auto overlay = impl->m_Plot.layer(OVERLAY_LAYER);

          overlay->setVisible(show);

          overlay->replot();

      }

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Alexandre Leroux Creates a delegate offering methods for rendering a graph	r480	#include "Visualization/VisualizationGraphRenderingDelegate.h"
Alexandre Leroux Passes directly GraphWidget in delegate...	r725	#include "Visualization/VisualizationGraphWidget.h"
Alexandre Leroux Creates a delegate offering methods for rendering a graph	r480	#include "Visualization/qcustomplot.h"

Alexandre Leroux Uses the same time spec (UTC) as axis for tooltips on graph	r490	#include <Common/DateUtils.h>

Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	#include <Data/IDataSeries.h>

Alexandre Leroux Adds title and close items in plot overlay	r726	#include <SqpApplication.h>

Alexandre Leroux Inits tracers and timer...	r482	namespace {

Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	/// Name of the axes layer in QCustomPlot
		const auto AXES_LAYER = QStringLiteral("axes");

Alexandre Leroux Show tracers method (1)...	r483	const auto DATETIME_FORMAT = QStringLiteral("yyyy/MM/dd hh:mm:ss:zzz");

Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	/// Format for datetimes on a axis
		const auto DATETIME_TICKER_FORMAT = QStringLiteral("yyyy/MM/dd \nhh:mm:ss");

		/// Icon used to show x-axis properties
		const auto HIDE_AXIS_ICON_PATH = QStringLiteral(":/icones/down.png");

Alexandre Leroux Adds title and close items in plot overlay	r726	/// Name of the overlay layer in QCustomPlot
		const auto OVERLAY_LAYER = QStringLiteral("overlay");

Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	/// Pixmap used to show x-axis properties
		const auto SHOW_AXIS_ICON_PATH = QStringLiteral(":/icones/up.png");

Alexandre Leroux Uses Qt tooltips instead of QCPTextItem...	r576	const auto TOOLTIP_FORMAT = QStringLiteral("key: %1\nvalue: %2");
Alexandre Leroux Show tracers method (1)...	r483
Alexandre Leroux Shifts tooltip to mouse	r578	/// Offset used to shift the tooltip of the mouse
		const auto TOOLTIP_OFFSET = QPoint{20, 20};

Alexandre Leroux Uses Qt tooltips instead of QCPTextItem...	r576	/// Tooltip display rectangle (the tooltip is hidden when the mouse leaves this rectangle)
		const auto TOOLTIP_RECT = QRect{10, 10, 10, 10};

		/// Timeout after which the tooltip is displayed
		const auto TOOLTIP_TIMEOUT = 500;
Alexandre Leroux Inits tracers and timer...	r482
Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	/// Generates the appropriate ticker for an axis, depending on whether the axis displays time or
		/// non-time data
		QSharedPointer<QCPAxisTicker> axisTicker(bool isTimeAxis)
		{
		if (isTimeAxis) {
		auto dateTicker = QSharedPointer<QCPAxisTickerDateTime>::create();
		dateTicker->setDateTimeFormat(DATETIME_TICKER_FORMAT);
		dateTicker->setDateTimeSpec(Qt::UTC);

		return dateTicker;
		}
		else {
		// default ticker
		return QSharedPointer<QCPAxisTicker>::create();
		}
		}

Alexandre Leroux Show tracers method (1)...	r483	/// Formats a data value according to the axis on which it is present
		QString formatValue(double value, const QCPAxis &axis)
		{
		// If the axis is a time axis, formats the value as a date
Alexandre Leroux Uses the same time spec (UTC) as axis for tooltips on graph	r490	if (auto axisTicker = qSharedPointerDynamicCast<QCPAxisTickerDateTime>(axis.ticker())) {
		return DateUtils::dateTime(value, axisTicker->dateTimeSpec()).toString(DATETIME_FORMAT);
		}
		else {
		return QString::number(value);
		}
Alexandre Leroux Show tracers method (1)...	r483	}
Alexandre Leroux Sets tracers' styles	r485
		void initPointTracerStyle(QCPItemTracer &tracer) noexcept
		{
		tracer.setInterpolating(false);
Alexandre Leroux Replaces "Plus" cursor by "Circle" cursor	r577	tracer.setStyle(QCPItemTracer::tsCircle);
		tracer.setSize(3);
Alexandre Leroux Sets tracers' styles	r485	tracer.setPen(QPen(Qt::black));
		tracer.setBrush(Qt::black);
		}

Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	QPixmap pixmap(const QString &iconPath) noexcept
		{
		return QIcon{iconPath}.pixmap(QSize{16, 16});
		}

Alexandre Leroux Adds title and close items in plot overlay	r726	void initClosePixmapStyle(QCPItemPixmap &pixmap) noexcept
		{
		// Icon
		pixmap.setPixmap(
		sqpApp->style()->standardIcon(QStyle::SP_TitleBarCloseButton).pixmap(QSize{16, 16}));

		// Position
		pixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);
		pixmap.topLeft->setCoords(1, 0);
		pixmap.setClipToAxisRect(false);

		// Can be selected
		pixmap.setSelectable(true);
		}

Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	void initXAxisPixmapStyle(QCPItemPixmap &itemPixmap) noexcept
		{
		// Icon
		itemPixmap.setPixmap(pixmap(HIDE_AXIS_ICON_PATH));

		// Position
		itemPixmap.topLeft->setType(QCPItemPosition::ptAxisRectRatio);
		itemPixmap.topLeft->setCoords(0, 1);
		itemPixmap.setClipToAxisRect(false);

		// Can be selected
		itemPixmap.setSelectable(true);
		}

Alexandre Leroux Adds title and close items in plot overlay	r726	void initTitleTextStyle(QCPItemText &text) noexcept
		{
		// Font and background styles
		text.setColor(Qt::gray);
		text.setBrush(Qt::white);

		// Position
		text.setPositionAlignment(Qt::AlignTop \| Qt::AlignLeft);
		text.position->setType(QCPItemPosition::ptAxisRectRatio);
		text.position->setCoords(0.5, 0);
		}

Alexandre Leroux Inits tracers and timer...	r482	} // namespace

Alexandre Leroux Creates a delegate offering methods for rendering a graph	r480	struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate {
Alexandre Leroux Passes directly GraphWidget in delegate...	r725	explicit VisualizationGraphRenderingDelegatePrivate(VisualizationGraphWidget &graphWidget)
		: m_Plot{graphWidget.plot()},
		m_PointTracer{new QCPItemTracer{&m_Plot}},
		m_TracerTimer{},
Alexandre Leroux Adds title and close items in plot overlay	r726	m_ClosePixmap{new QCPItemPixmap{&m_Plot}},
Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	m_TitleText{new QCPItemText{&m_Plot}},
		m_XAxisPixmap{new QCPItemPixmap{&m_Plot}},
		m_ShowXAxis{true},
		m_XAxisLabel{}
Alexandre Leroux Inits tracers and timer...	r482	{
Alexandre Leroux Sets tracers' styles	r485	initPointTracerStyle(*m_PointTracer);
Alexandre Leroux Inits tracers and timer...	r482
Alexandre Leroux Uses Qt tooltips instead of QCPTextItem...	r576	m_TracerTimer.setInterval(TOOLTIP_TIMEOUT);
Alexandre Leroux Inits tracers and timer...	r482	m_TracerTimer.setSingleShot(true);
Alexandre Leroux Adds title and close items in plot overlay	r726
		// Inits "close button" in plot overlay
		m_ClosePixmap->setLayer(OVERLAY_LAYER);
		initClosePixmapStyle(*m_ClosePixmap);
Alexandre Leroux Calls 'close graph' action when selecting close item in overlay	r727
		// Connects pixmap selection to graph widget closing
		QObject::connect(m_ClosePixmap, &QCPItemPixmap::selectionChanged,
		[&graphWidget](bool selected) {
		if (selected) {
		graphWidget.close();
		}
		});

Alexandre Leroux Adds title and close items in plot overlay	r726	// Inits graph name in plot overlay
		m_TitleText->setLayer(OVERLAY_LAYER);
		m_TitleText->setText(graphWidget.name());
		initTitleTextStyle(*m_TitleText);
Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729
		// Inits "show x-axis button" in plot overlay
		m_XAxisPixmap->setLayer(OVERLAY_LAYER);
		initXAxisPixmapStyle(*m_XAxisPixmap);

		// Connects pixmap selection to graph x-axis showing/hiding
		QObject::connect(m_XAxisPixmap, &QCPItemPixmap::selectionChanged, [this]() {
		if (m_XAxisPixmap->selected()) {
		// Changes the selection state and refreshes the x-axis
		m_ShowXAxis = !m_ShowXAxis;
		updateXAxisState();
		m_Plot.layer(AXES_LAYER)->replot();

		// Deselects the x-axis pixmap and updates icon
		m_XAxisPixmap->setSelected(false);
		m_XAxisPixmap->setPixmap(
		pixmap(m_ShowXAxis ? HIDE_AXIS_ICON_PATH : SHOW_AXIS_ICON_PATH));
		m_Plot.layer(OVERLAY_LAYER)->replot();
		}
		});
		}

		/// Updates state of x-axis according to the current selection of x-axis pixmap
		/// @remarks the method doesn't call plot refresh
		void updateXAxisState() noexcept
		{
		m_Plot.xAxis->setTickLabels(m_ShowXAxis);
		m_Plot.xAxis->setLabel(m_ShowXAxis ? m_XAxisLabel : QString{});
Alexandre Leroux Inits tracers and timer...	r482	}
Alexandre Leroux Creates a delegate offering methods for rendering a graph	r480
		QCustomPlot &m_Plot;
Alexandre Leroux Inits tracers and timer...	r482	QCPItemTracer *m_PointTracer;
		QTimer m_TracerTimer;
Alexandre Leroux Adds title and close items in plot overlay	r726	QCPItemPixmap *m_ClosePixmap; /// Graph's close button
		QCPItemText *m_TitleText; /// Graph's title
Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	QCPItemPixmap *m_XAxisPixmap;
		bool m_ShowXAxis; /// X-axis properties are shown or hidden
		QString m_XAxisLabel;
Alexandre Leroux Creates a delegate offering methods for rendering a graph	r480	};

Alexandre Leroux Passes directly GraphWidget in delegate...	r725	VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(
		VisualizationGraphWidget &graphWidget)
		: impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(graphWidget)}
Alexandre Leroux Creates a delegate offering methods for rendering a graph	r480	{
		}
Alexandre Leroux Creates method that will display a tooltip and a tracer with data point information after a while	r481
		void VisualizationGraphRenderingDelegate::onMouseMove(QMouseEvent *event) noexcept
		{
Alexandre Leroux Inits tracers and timer...	r482	// Cancels pending refresh
		impl->m_TracerTimer.disconnect();

Alexandre Leroux Uses Qt tooltips instead of QCPTextItem...	r576	// Reinits tracers
		impl->m_PointTracer->setGraph(nullptr);
		impl->m_PointTracer->setVisible(false);
		impl->m_Plot.replot();

		// Gets the graph under the mouse position
		auto eventPos = event->pos();
		if (auto graph = qobject_cast<QCPGraph *>(impl->m_Plot.plottableAt(eventPos))) {
		auto mouseKey = graph->keyAxis()->pixelToCoord(eventPos.x());
		auto graphData = graph->data();

		// Gets the closest data point to the mouse
		auto graphDataIt = graphData->findBegin(mouseKey);
		if (graphDataIt != graphData->constEnd()) {
		auto key = formatValue(graphDataIt->key, *graph->keyAxis());
		auto value = formatValue(graphDataIt->value, *graph->valueAxis());

		// Displays point tracer
		impl->m_PointTracer->setGraph(graph);
		impl->m_PointTracer->setGraphKey(graphDataIt->key);
		impl->m_PointTracer->setLayer(
		impl->m_Plot.layer("main")); // Tracer is set on top of the plot's main layer
		impl->m_PointTracer->setVisible(true);
Alexandre Leroux Show tracers method (2)...	r484	impl->m_Plot.replot();
Alexandre Leroux Inits tracers and timer...	r482
Alexandre Leroux Uses Qt tooltips instead of QCPTextItem...	r576	// Starts timer to show tooltip after timeout
		auto showTooltip = [ tooltip = TOOLTIP_FORMAT.arg(key, value), eventPos, this ]()
		{
Alexandre Leroux Shifts tooltip to mouse	r578	QToolTip::showText(impl->m_Plot.mapToGlobal(eventPos) + TOOLTIP_OFFSET, tooltip,
		&impl->m_Plot, TOOLTIP_RECT);
Alexandre Leroux Uses Qt tooltips instead of QCPTextItem...	r576	};

		QObject::connect(&impl->m_TracerTimer, &QTimer::timeout, showTooltip);
		impl->m_TracerTimer.start();
		}
		}
Alexandre Leroux Creates method that will display a tooltip and a tracer with data point information after a while	r481	}
Alexandre Leroux Shows/hides plot overlay when entering/leaving graph	r728
Alexandre Leroux Adds button on plot overlay to show/hide x-axis properties	r729	void VisualizationGraphRenderingDelegate::setAxesProperties(const Unit &xAxisUnit,
		const Unit &valuesUnit) noexcept
		{
		// Stores x-axis label to be able to retrieve it when x-axis pixmap is unselected
		impl->m_XAxisLabel = xAxisUnit.m_Name;

		auto setAxisProperties = [](auto axis, const auto &unit) {
		// label (unit name)
		axis->setLabel(unit.m_Name);

		// ticker (depending on the type of unit)
		axis->setTicker(axisTicker(unit.m_TimeUnit));
		};
		setAxisProperties(impl->m_Plot.xAxis, xAxisUnit);
		setAxisProperties(impl->m_Plot.yAxis, valuesUnit);

		// Updates x-axis state
		impl->updateXAxisState();

		impl->m_Plot.layer(AXES_LAYER)->replot();
		}

Alexandre Leroux Shows/hides plot overlay when entering/leaving graph	r728	void VisualizationGraphRenderingDelegate::showGraphOverlay(bool show) noexcept
		{
		auto overlay = impl->m_Plot.layer(OVERLAY_LAYER);
		overlay->setVisible(show);
		overlay->replot();
		}