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

Removes title and close button from graph widget...

Removes title and close button from graph widget Title and button will be added directly as items in plot overlay

Alexandre Leroux - - Load All Authors

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             VisualizationGraphRenderingDelegate.cpp
        
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             / gui / src / Visualization / VisualizationGraphRenderingDelegate.cpp
          
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        Alexandre Leroux
    
Creates a delegate offering methods for rendering a graph

              r480
            
      #include "Visualization/VisualizationGraphRenderingDelegate.h"

      #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
    
Inits tracers and timer...

              r482
            
      namespace {

        Alexandre Leroux
    
Show tracers method (1)...

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

        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
    
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
    
Inits tracers and timer...

              r482
            
      } // namespace

        Alexandre Leroux
    
Creates a delegate offering methods for rendering a graph

              r480
            
      struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate {

        Alexandre Leroux
    
Inits tracers and timer...

              r482
            
          explicit VisualizationGraphRenderingDelegatePrivate(QCustomPlot &plot)

        Alexandre Leroux
    
Uses Qt tooltips instead of QCPTextItem...

              r576
            
                  : m_Plot{plot}, m_PointTracer{new QCPItemTracer{&plot}}, m_TracerTimer{}

        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
    
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
    
Creates a delegate offering methods for rendering a graph

              r480
            
      };

      VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(QCustomPlot &plot)

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

      {

      }

        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
            
      }

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Alexandre Leroux Creates a delegate offering methods for rendering a graph	r480	#include "Visualization/VisualizationGraphRenderingDelegate.h"
		#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 Inits tracers and timer...	r482	namespace {

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

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

Alexandre Leroux Creates a delegate offering methods for rendering a graph	r480	struct VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegatePrivate {
Alexandre Leroux Inits tracers and timer...	r482	explicit VisualizationGraphRenderingDelegatePrivate(QCustomPlot &plot)
Alexandre Leroux Uses Qt tooltips instead of QCPTextItem...	r576	: m_Plot{plot}, m_PointTracer{new QCPItemTracer{&plot}}, m_TracerTimer{}
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 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 Creates a delegate offering methods for rendering a graph	r480	};

		VisualizationGraphRenderingDelegate::VisualizationGraphRenderingDelegate(QCustomPlot &plot)
		: impl{spimpl::make_unique_impl<VisualizationGraphRenderingDelegatePrivate>(plot)}
		{
		}
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	}