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https://github.com/OPM/ResInsight.git
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Rename ApplicationCode to ApplicationLibCode
This commit is contained in:
Gaute Lindkvist
266
ApplicationLibCode/UserInterface/RiuQwtCurvePointTracker.cpp
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266
ApplicationLibCode/UserInterface/RiuQwtCurvePointTracker.cpp
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/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2017- Statoil ASA
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//
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// ResInsight is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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#include "RiuQwtCurvePointTracker.h"
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#include "RiaQDateTimeTools.h"
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#include "RiuGuiTheme.h"
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#include "qwt_plot_marker.h"
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#include "qwt_symbol.h"
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#include "qwt_date_scale_draw.h"
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#include "qwt_plot_curve.h"
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#include <cfloat> // For DBL_MAX
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#include <QEvent>
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RiuQwtCurvePointTracker::RiuQwtCurvePointTracker( QwtPlot* plot,
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bool isMainAxisHorizontal,
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IPlotCurveInfoTextProvider* curveInfoTextProvider )
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: QwtPlotPicker( plot->canvas() )
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, m_plot( plot )
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, m_isMainAxisHorizontal( isMainAxisHorizontal )
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, m_curveInfoTextProvider( curveInfoTextProvider )
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{
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this->setTrackerMode( QwtPicker::AlwaysOn );
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m_plotMarker = new QwtPlotMarker;
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// Have this marker always on top of all curves/plot items.
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double zAlwaysOnTop = 99999999;
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m_plotMarker->setZ( zAlwaysOnTop );
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auto color = RiuGuiTheme::getColorByVariableName( "markerColor" );
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// QwtPlotMarker takes ownership of the symbol, it is deleted in destructor of QwtPlotMarker
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QwtSymbol* mySymbol = new QwtSymbol( QwtSymbol::Ellipse, Qt::NoBrush, QPen( color, 2.0 ), QSize( 12, 12 ) );
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m_plotMarker->setSymbol( mySymbol );
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RiuQwtCurvePointTracker::~RiuQwtCurvePointTracker()
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{
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m_plotMarker->detach();
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delete m_plotMarker;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuQwtCurvePointTracker::removeMarkerOnFocusLeave()
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{
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if ( m_plotMarker->plot() )
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{
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m_plotMarker->detach();
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m_plot->replot();
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}
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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bool RiuQwtCurvePointTracker::eventFilter( QObject* watched, QEvent* event )
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{
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if ( event->type() == QEvent::Leave )
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{
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this->removeMarkerOnFocusLeave();
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}
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// pass the event on to the parent class
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return QwtPlotPicker::eventFilter( watched, event );
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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QwtText RiuQwtCurvePointTracker::trackerText( const QPoint& pos ) const
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{
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QwtText txt;
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if ( m_plot )
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{
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QwtPlot::Axis relatedYAxis = QwtPlot::yLeft;
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QwtPlot::Axis relatedXAxis = QwtPlot::xBottom;
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QString curveInfoText;
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QString mainAxisValueString;
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QString valueAxisValueString;
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QPointF closestPoint =
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closestCurvePoint( pos, &curveInfoText, &valueAxisValueString, &mainAxisValueString, &relatedXAxis, &relatedYAxis );
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if ( !closestPoint.isNull() )
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{
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QString str = !curveInfoText.isEmpty() ? QString( "%1: %2" ).arg( curveInfoText ).arg( valueAxisValueString )
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: valueAxisValueString;
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if ( !mainAxisValueString.isEmpty() )
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{
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str += QString( " (%1)" ).arg( mainAxisValueString );
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}
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txt.setText( str );
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}
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updateClosestCurvePointMarker( closestPoint, relatedXAxis, relatedYAxis );
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}
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auto color = RiuGuiTheme::getColorByVariableName( "markerColor" );
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txt.setColor( color );
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return txt;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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QPointF RiuQwtCurvePointTracker::closestCurvePoint( const QPoint& cursorPosition,
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QString* curveInfoText,
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QString* valueAxisValueString,
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QString* mainAxisValueString,
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QwtPlot::Axis* relatedXAxis,
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QwtPlot::Axis* relatedYAxis ) const
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{
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QPointF samplePoint;
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QwtPlotCurve* closestCurve = nullptr;
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double distMin = DBL_MAX;
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int closestPointSampleIndex = -1;
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const QwtPlotItemList& itmList = m_plot->itemList();
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for ( QwtPlotItemIterator it = itmList.begin(); it != itmList.end(); it++ )
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{
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if ( ( *it )->rtti() == QwtPlotItem::Rtti_PlotCurve )
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{
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QwtPlotCurve* candidateCurve = static_cast<QwtPlotCurve*>( *it );
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double dist = DBL_MAX;
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int candidateSampleIndex = candidateCurve->closestPoint( cursorPosition, &dist );
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if ( dist < distMin )
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{
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closestCurve = candidateCurve;
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distMin = dist;
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closestPointSampleIndex = candidateSampleIndex;
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}
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}
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}
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if ( closestCurve && distMin < 50 )
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{
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samplePoint = closestCurve->sample( closestPointSampleIndex );
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if ( relatedXAxis ) *relatedXAxis = static_cast<QwtPlot::Axis>( closestCurve->xAxis() );
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if ( relatedYAxis ) *relatedYAxis = static_cast<QwtPlot::Axis>( closestCurve->yAxis() );
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}
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if ( mainAxisValueString )
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{
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const QwtScaleDraw* mainAxisScaleDraw = m_isMainAxisHorizontal ? m_plot->axisScaleDraw( *relatedXAxis )
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: m_plot->axisScaleDraw( *relatedYAxis );
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auto dateScaleDraw = dynamic_cast<const QwtDateScaleDraw*>( mainAxisScaleDraw );
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qreal mainAxisSampleVal = 0.0;
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if ( m_isMainAxisHorizontal )
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mainAxisSampleVal = samplePoint.x();
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else
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mainAxisSampleVal = samplePoint.y();
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if ( curveInfoText && closestCurve && m_curveInfoTextProvider )
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{
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*curveInfoText = m_curveInfoTextProvider->curveInfoText( closestCurve );
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}
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if ( dateScaleDraw )
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{
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QDateTime date = dateScaleDraw->toDateTime( mainAxisSampleVal );
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QString dateString = RiaQDateTimeTools::toStringUsingApplicationLocale( date, "hh:mm dd.MMMM.yyyy" );
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*mainAxisValueString = dateString;
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}
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else if ( mainAxisScaleDraw )
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{
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*mainAxisValueString = mainAxisScaleDraw->label( mainAxisSampleVal ).text();
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}
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}
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if ( valueAxisValueString && closestCurve )
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{
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const QwtScaleDraw* valueAxisScaleDraw = m_isMainAxisHorizontal ? m_plot->axisScaleDraw( *relatedYAxis )
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: m_plot->axisScaleDraw( *relatedXAxis );
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qreal valueAxisSampleVal = 0.0;
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if ( m_isMainAxisHorizontal )
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valueAxisSampleVal = samplePoint.y();
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else
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valueAxisSampleVal = samplePoint.x();
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if ( valueAxisScaleDraw )
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{
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*valueAxisValueString = valueAxisScaleDraw->label( valueAxisSampleVal ).text();
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}
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}
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return samplePoint;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuQwtCurvePointTracker::updateClosestCurvePointMarker( const QPointF& closestPoint,
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QwtPlot::Axis relatedXAxis,
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QwtPlot::Axis relatedYAxis ) const
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{
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bool replotRequired = false;
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if ( !closestPoint.isNull() )
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{
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if ( !m_plotMarker->plot() )
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{
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m_plotMarker->attach( m_plot );
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replotRequired = true;
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}
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if ( m_plotMarker->value() != closestPoint )
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{
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m_plotMarker->setValue( closestPoint.x(), closestPoint.y() );
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// Set the axes that the marker realtes to, to make the positioning correct
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m_plotMarker->setAxes( relatedXAxis, relatedYAxis );
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// TODO : Should use a color or other visual indicator to show what axis the curve relates to
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replotRequired = true;
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}
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}
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else
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{
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if ( m_plotMarker->plot() )
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{
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m_plotMarker->detach();
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replotRequired = true;
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}
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}
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if ( replotRequired ) m_plot->replot();
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}
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