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https://github.com/OPM/ResInsight.git
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365 lines
15 KiB
C++
365 lines
15 KiB
C++
/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2015- Statoil ASA
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// Copyright (C) 2015- Ceetron Solutions AS
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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 "RiuLineSegmentQwtPlotCurve.h"
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#include "qwt_symbol.h"
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#include "RiaCurveDataTools.h"
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#include "qwt_date.h"
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#include "qwt_point_mapper.h"
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#include "qwt_painter.h"
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#include "qwt_plot_intervalcurve.h"
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#include "qwt_scale_map.h"
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#include "qwt_interval_symbol.h"
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RiuLineSegmentQwtPlotCurve::RiuLineSegmentQwtPlotCurve(const QString &title)
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: QwtPlotCurve(title)
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{
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this->setLegendAttribute(QwtPlotCurve::LegendShowLine, true);
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this->setLegendAttribute(QwtPlotCurve::LegendShowSymbol, true);
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this->setLegendAttribute(QwtPlotCurve::LegendShowBrush, true);
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this->setRenderHint(QwtPlotItem::RenderAntialiased, true);
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m_symbolSkipPixelDistance = 10.0f;
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m_errorBars = new QwtPlotIntervalCurve();
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m_errorBars->setStyle(QwtPlotIntervalCurve::CurveStyle::NoCurve);
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m_errorBars->setSymbol(new QwtIntervalSymbol(QwtIntervalSymbol::Bar));
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m_errorBars->setItemAttribute(QwtPlotItem::Legend, false);
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m_showErrorBars = true;
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m_attachedToPlot = nullptr;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RiuLineSegmentQwtPlotCurve::~RiuLineSegmentQwtPlotCurve()
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{
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delete m_errorBars;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::setSamplesFromXValuesAndYValues(const std::vector<double>& xValues, const std::vector<double>& yValues, const std::vector<double>& yErrorValues, bool keepOnlyPositiveValues)
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{
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CVF_ASSERT(xValues.size() == yValues.size());
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CVF_ASSERT(yErrorValues.empty() || yErrorValues.size() == xValues.size());
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bool showErrorBars = m_showErrorBars && !yErrorValues.empty();
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QPolygonF points;
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QVector<QwtIntervalSample> errorIntervals;
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std::vector< std::pair<size_t, size_t> > filteredIntervals;
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{
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std::vector<double> filteredYValues;
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std::vector<double> filteredXValues;
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std::vector<double> filteredYErrorValues;
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{
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auto intervalsOfValidValues = RiaCurveDataTools::calculateIntervalsOfValidValues(yValues, keepOnlyPositiveValues);
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RiaCurveDataTools::getValuesByIntervals(yValues, intervalsOfValidValues, &filteredYValues);
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RiaCurveDataTools::getValuesByIntervals(xValues, intervalsOfValidValues, &filteredXValues);
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if(showErrorBars) RiaCurveDataTools::getValuesByIntervals(yErrorValues, intervalsOfValidValues, &filteredYErrorValues);
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filteredIntervals = RiaCurveDataTools::computePolyLineStartStopIndices(intervalsOfValidValues);
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}
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points.reserve(static_cast<int>(filteredXValues.size()));
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errorIntervals.reserve(static_cast<int>(filteredXValues.size()));
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for ( size_t i = 0; i < filteredXValues.size(); i++ )
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{
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points << QPointF(filteredXValues[i], filteredYValues[i]);
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if (showErrorBars)
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{
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errorIntervals << QwtIntervalSample(filteredXValues[i], filteredYValues[i] - filteredYErrorValues[i], filteredYValues[i] + filteredYErrorValues[i]);
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}
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}
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}
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this->setSamples(points);
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this->setLineSegmentStartStopIndices(filteredIntervals);
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if(showErrorBars) m_errorBars->setSamples(errorIntervals);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::setSamplesFromXValuesAndYValues(const std::vector<double>& xValues, const std::vector<double>& yValues, bool keepOnlyPositiveValues)
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{
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setSamplesFromXValuesAndYValues(xValues, yValues, std::vector<double>(), keepOnlyPositiveValues);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::setSamplesFromDatesAndYValues(const std::vector<QDateTime>& dateTimes, const std::vector<double>& yValues, bool keepOnlyPositiveValues)
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{
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setSamplesFromXValuesAndYValues(RiuLineSegmentQwtPlotCurve::fromQDateTime(dateTimes), yValues, std::vector<double>(), keepOnlyPositiveValues);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::setSamplesFromTimeTAndYValues(const std::vector<time_t>& dateTimes, const std::vector<double>& yValues, bool keepOnlyPositiveValues)
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{
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setSamplesFromXValuesAndYValues(RiuLineSegmentQwtPlotCurve::fromTime_t(dateTimes), yValues, std::vector<double>(), keepOnlyPositiveValues);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::setSamplesFromTimeTAndYValues(const std::vector<time_t>& dateTimes, const std::vector<double>& yValues, const std::vector<double>& yErrorValues, bool keepOnlyPositiveValues)
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{
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setSamplesFromXValuesAndYValues(RiuLineSegmentQwtPlotCurve::fromTime_t(dateTimes), yValues, yErrorValues, keepOnlyPositiveValues);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::drawCurve(QPainter* p, int style,
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const QwtScaleMap& xMap, const QwtScaleMap& yMap,
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const QRectF& canvasRect, int from, int to) const
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{
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size_t intervalCount = m_polyLineStartStopIndices.size();
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if (intervalCount > 0)
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{
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for (size_t intIdx = 0; intIdx < intervalCount; intIdx++)
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{
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if (m_polyLineStartStopIndices[intIdx].first == m_polyLineStartStopIndices[intIdx].second)
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{
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// Use a symbol to draw a single value, as a single value will not be visible
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// when using QwtPlotCurve::drawCurve without symbols activated
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QwtSymbol symbol(QwtSymbol::XCross);
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symbol.setSize(10, 10);
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QwtPlotCurve::drawSymbols(p, symbol, xMap, yMap, canvasRect, (int) m_polyLineStartStopIndices[intIdx].first, (int) m_polyLineStartStopIndices[intIdx].second);
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}
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else
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{
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QwtPlotCurve::drawCurve(p, style, xMap, yMap, canvasRect, (int) m_polyLineStartStopIndices[intIdx].first, (int) m_polyLineStartStopIndices[intIdx].second);
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}
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}
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}
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else
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{
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QwtPlotCurve::drawCurve(p, style, xMap, yMap, canvasRect, from, to);
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}
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};
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//--------------------------------------------------------------------------------------------------
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/// Drawing symbols but skipping if they are to close to the previous one
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::drawSymbols(QPainter *painter, const QwtSymbol &symbol,
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const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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const QRectF &canvasRect, int from, int to) const
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{
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QwtPointMapper mapper;
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bool filterSymbols = m_symbolSkipPixelDistance > 0;
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if (filterSymbols)
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{
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mapper.setFlag(QwtPointMapper::RoundPoints,
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QwtPainter::roundingAlignment(painter));
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mapper.setFlag(QwtPointMapper::WeedOutPoints,
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testPaintAttribute(QwtPlotCurve::FilterPoints));
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mapper.setBoundingRect(canvasRect);
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}
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const QPolygonF points = mapper.toPointsF(xMap, yMap, data(), from, to);
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int pointCount = points.size();
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QPolygonF pointsToDisplay;
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if (filterSymbols)
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{
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QPointF lastDrawnSymbolPos;
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if (pointCount > 0)
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{
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pointsToDisplay.push_back(points[0]);
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lastDrawnSymbolPos = points[0];
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}
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float sqSkipDist = m_symbolSkipPixelDistance * m_symbolSkipPixelDistance;
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for (int pIdx = 1; pIdx < pointCount - 1; ++pIdx)
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{
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QPointF diff = points[pIdx] - lastDrawnSymbolPos;
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float sqDistBetweenSymbols = diff.x()*diff.x() + diff.y()*diff.y();
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if (sqDistBetweenSymbols > sqSkipDist)
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{
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pointsToDisplay.push_back(points[pIdx]);
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lastDrawnSymbolPos = points[pIdx];
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}
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}
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if (pointCount > 1) pointsToDisplay.push_back(points.back());
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}
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else
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{
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pointsToDisplay = points;
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}
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if (pointsToDisplay.size() > 0)
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{
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symbol.drawSymbols(painter, pointsToDisplay);
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const RiuCurveQwtSymbol* sym = dynamic_cast<const RiuCurveQwtSymbol*>(&symbol);
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if (sym && !sym->label().isEmpty())
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{
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for (auto& pt : pointsToDisplay)
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{
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int width = painter->fontMetrics().width(sym->label());
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painter->drawText(pt.x() - width / 2, pt.y() - 5, sym->label());
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}
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}
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}
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::setLineSegmentStartStopIndices(const std::vector< std::pair<size_t, size_t> >& lineSegmentStartStopIndices)
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{
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m_polyLineStartStopIndices = lineSegmentStartStopIndices;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::setSymbolSkipPixelDistance(float distance)
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{
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m_symbolSkipPixelDistance = distance >= 0.0f ? distance: 0.0f;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::attach(QwtPlot *plot)
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{
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QwtPlotItem::attach(plot);
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if(m_showErrorBars) m_errorBars->attach(plot);
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m_attachedToPlot = plot;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::detach()
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{
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QwtPlotItem::detach();
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m_errorBars->detach();
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m_attachedToPlot = nullptr;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::showErrorBars(bool show)
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{
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m_showErrorBars = show;
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if (m_showErrorBars && m_attachedToPlot) m_errorBars->attach(m_attachedToPlot);
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else m_errorBars->detach();
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuLineSegmentQwtPlotCurve::setErrorBarsColor(QColor color)
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{
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QwtIntervalSymbol* newSymbol = new QwtIntervalSymbol(QwtIntervalSymbol::Bar);
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newSymbol->setPen(QPen(color));
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m_errorBars->setSymbol(newSymbol);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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std::vector<double> RiuLineSegmentQwtPlotCurve::fromQDateTime(const std::vector<QDateTime>& dateTimes)
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{
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std::vector<double> doubleValues;
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if (!dateTimes.empty())
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{
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doubleValues.reserve(dateTimes.size());
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for (const auto& dt : dateTimes)
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{
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doubleValues.push_back(QwtDate::toDouble(dt));
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}
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}
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return doubleValues;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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std::vector<double> RiuLineSegmentQwtPlotCurve::fromTime_t(const std::vector<time_t>& timeSteps)
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{
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std::vector<double> doubleValues;
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if (!timeSteps.empty())
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{
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doubleValues.reserve(timeSteps.size());
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for (const auto& time : timeSteps)
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{
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double milliSecSinceEpoch = time * 1000; // This is kind of hack, as the c++ standard does not state what time_t is. "Almost always" secs since epoch according to cppreference.com
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doubleValues.push_back(milliSecSinceEpoch);
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}
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}
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return doubleValues;
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}
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//--------------------------------------------------------------------------------------------------
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/// Internal class to support labels on symbols
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//--------------------------------------------------------------------------------------------------
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RiuCurveQwtSymbol::RiuCurveQwtSymbol(QwtSymbol::Style style, const QString& label) : QwtSymbol(style), m_label(label)
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{
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}
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void RiuCurveQwtSymbol::renderSymbols(QPainter *painter, const QPointF *points, int numPoints) const
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{
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QwtSymbol::renderSymbols(painter, points, numPoints);
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if (!m_label.isEmpty())
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{
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for (int i = 0; i < numPoints; i++)
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{
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auto pt = points[i];
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int width = painter->fontMetrics().width(m_label);
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painter->drawText(pt.x() - width / 2, pt.y() - 5, m_label);
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}
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}
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}
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