#include "plot.h" #include "friedberg2007.h" #include <qwt_plot_zoomer.h> #include <qwt_plot_panner.h> #include <qwt_plot_marker.h> #include <qwt_plot_grid.h> #include <qwt_plot_curve.h> #include <qwt_plot_intervalcurve.h> #include <qwt_legend.h> #include <qwt_interval_symbol.h> #include <qwt_symbol.h> #include <qwt_series_data.h> #include <qwt_text.h> #include <qwt_scale_draw.h> #include <qwt_plot_renderer.h> #include <qdatetime.h> #include <qfiledialog.h> #include <qimagewriter.h> #include <qprintdialog.h> #include <qfileinfo.h> class Grid: public QwtPlotGrid { public: Grid() { enableXMin( true ); setMajPen( QPen( Qt::white, 0, Qt::DotLine ) ); setMinPen( QPen( Qt::gray, 0 , Qt::DotLine ) ); } virtual void updateScaleDiv( const QwtScaleDiv &xMap, const QwtScaleDiv &yMap ) { QList<double> ticks[QwtScaleDiv::NTickTypes]; ticks[QwtScaleDiv::MajorTick] = xMap.ticks( QwtScaleDiv::MediumTick ); ticks[QwtScaleDiv::MinorTick] = xMap.ticks( QwtScaleDiv::MinorTick ); QwtPlotGrid::updateScaleDiv( QwtScaleDiv( xMap.lowerBound(), xMap.upperBound(), ticks ), yMap ); } }; class YearScaleDraw: public QwtScaleDraw { public: YearScaleDraw() { setTickLength( QwtScaleDiv::MajorTick, 0 ); setTickLength( QwtScaleDiv::MinorTick, 0 ); setTickLength( QwtScaleDiv::MediumTick, 6 ); setLabelRotation( -60.0 ); setLabelAlignment( Qt::AlignLeft | Qt::AlignVCenter ); setSpacing( 15 ); } virtual QwtText label( double value ) const { return QDate::longMonthName( int( value / 30 ) + 1 ); } }; Plot::Plot( QWidget *parent ): QwtPlot( parent ) { setObjectName( "FriedbergPlot" ); setTitle( "Temperature of Friedberg/Germany" ); setAxisTitle( QwtPlot::xBottom, "2007" ); setAxisScaleDiv( QwtPlot::xBottom, yearScaleDiv() ); setAxisScaleDraw( QwtPlot::xBottom, new YearScaleDraw() ); setAxisTitle( QwtPlot::yLeft, QString( "Temperature [%1C]" ).arg( QChar( 0x00B0 ) ) ); // grid QwtPlotGrid *grid = new Grid; grid->attach( this ); insertLegend( new QwtLegend(), QwtPlot::RightLegend ); const int numDays = 365; QVector<QPointF> averageData( numDays ); QVector<QwtIntervalSample> rangeData( numDays ); for ( int i = 0; i < numDays; i++ ) { const Temperature &t = friedberg2007[i]; averageData[i] = QPointF( double( i ), t.averageValue ); rangeData[i] = QwtIntervalSample( double( i ), QwtInterval( t.minValue, t.maxValue ) ); } insertCurve( "Average", averageData, Qt::black ); insertErrorBars( "Range", rangeData, Qt::blue ); // LeftButton for the zooming // MidButton for the panning // RightButton: zoom out by 1 // Ctrl+RighButton: zoom out to full size QwtPlotZoomer* zoomer = new QwtPlotZoomer( canvas() ); zoomer->setRubberBandPen( QColor( Qt::black ) ); zoomer->setTrackerPen( QColor( Qt::black ) ); zoomer->setMousePattern( QwtEventPattern::MouseSelect2, Qt::RightButton, Qt::ControlModifier ); zoomer->setMousePattern( QwtEventPattern::MouseSelect3, Qt::RightButton ); QwtPlotPanner *panner = new QwtPlotPanner( canvas() ); panner->setMouseButton( Qt::MidButton ); canvas()->setPalette( Qt::darkGray ); canvas()->setBorderRadius( 10 ); } QwtScaleDiv Plot::yearScaleDiv() const { const int days[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; QList<double> ticks[QwtScaleDiv::NTickTypes]; QList<double> &mediumTicks = ticks[QwtScaleDiv::MediumTick]; mediumTicks += 0.0; for ( uint i = 0; i < sizeof( days ) / sizeof( days[0] ); i++ ) mediumTicks += mediumTicks.last() + days[i]; QList<double> &minorTicks = ticks[QwtScaleDiv::MinorTick]; for ( int i = 1; i <= 365; i += 7 ) minorTicks += i; QList<double> &majorTicks = ticks[QwtScaleDiv::MajorTick]; for ( int i = 0; i < 12; i++ ) majorTicks += i * 30 + 15; QwtScaleDiv scaleDiv( mediumTicks.first(), mediumTicks.last() + 1, ticks ); return scaleDiv; } void Plot::insertCurve( const QString& title, const QVector<QPointF>& samples, const QColor &color ) { d_curve = new QwtPlotCurve( title ); d_curve->setRenderHint( QwtPlotItem::RenderAntialiased ); d_curve->setStyle( QwtPlotCurve::NoCurve ); d_curve->setLegendAttribute( QwtPlotCurve::LegendShowSymbol ); QwtSymbol *symbol = new QwtSymbol( QwtSymbol::XCross ); symbol->setSize( 4 ); symbol->setPen( QPen( color ) ); d_curve->setSymbol( symbol ); d_curve->setSamples( samples ); d_curve->attach( this ); } void Plot::insertErrorBars( const QString &title, const QVector<QwtIntervalSample>& samples, const QColor &color ) { d_intervalCurve = new QwtPlotIntervalCurve( title ); d_intervalCurve->setRenderHint( QwtPlotItem::RenderAntialiased ); d_intervalCurve->setPen( QPen( Qt::white ) ); QColor bg( color ); bg.setAlpha( 150 ); d_intervalCurve->setBrush( QBrush( bg ) ); d_intervalCurve->setStyle( QwtPlotIntervalCurve::Tube ); d_intervalCurve->setSamples( samples ); d_intervalCurve->attach( this ); } void Plot::setMode( int style ) { if ( style == Tube ) { d_intervalCurve->setStyle( QwtPlotIntervalCurve::Tube ); d_intervalCurve->setSymbol( NULL ); d_intervalCurve->setRenderHint( QwtPlotItem::RenderAntialiased, true ); } else { d_intervalCurve->setStyle( QwtPlotIntervalCurve::NoCurve ); QColor c( d_intervalCurve->brush().color().rgb() ); // skip alpha QwtIntervalSymbol *errorBar = new QwtIntervalSymbol( QwtIntervalSymbol::Bar ); errorBar->setWidth( 8 ); // should be something even errorBar->setPen( c ); d_intervalCurve->setSymbol( errorBar ); d_intervalCurve->setRenderHint( QwtPlotItem::RenderAntialiased, false ); } replot(); } void Plot::exportPlot() { #ifndef QT_NO_PRINTER QString fileName = "friedberg.pdf"; #else QString fileName = "friedberg.png"; #endif #ifndef QT_NO_FILEDIALOG const QList<QByteArray> imageFormats = QImageWriter::supportedImageFormats(); QStringList filter; filter += "PDF Documents (*.pdf)"; #ifndef QWT_NO_SVG filter += "SVG Documents (*.svg)"; #endif filter += "Postscript Documents (*.ps)"; if ( imageFormats.size() > 0 ) { QString imageFilter("Images ("); for ( int i = 0; i < imageFormats.size(); i++ ) { if ( i > 0 ) imageFilter += " "; imageFilter += "*."; imageFilter += imageFormats[i]; } imageFilter += ")"; filter += imageFilter; } fileName = QFileDialog::getSaveFileName( this, "Export File Name", fileName, filter.join(";;"), NULL, QFileDialog::DontConfirmOverwrite); #endif if ( !fileName.isEmpty() ) { QwtPlotRenderer renderer; renderer.setDiscardFlag(QwtPlotRenderer::DiscardBackground, false); renderer.renderDocument(this, fileName, QSizeF(300, 200), 85); } }