121 lines
3.3 KiB
C++
121 lines
3.3 KiB
C++
#include "plot.h"
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#include "editor.h"
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#include <qwt_plot_shapeitem.h>
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#include <qwt_plot_magnifier.h>
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#include <qwt_plot_canvas.h>
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#include <qwt_legend.h>
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#include <qwt_plot_renderer.h>
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class Legend: public QwtLegend
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{
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protected:
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virtual QWidget *createWidget( const QwtLegendData &data ) const
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{
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QWidget *w = QwtLegend::createWidget( data );
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if ( w )
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{
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w->setStyleSheet(
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"border-radius: 5px;"
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"padding: 2px;"
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"background: LemonChiffon;"
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);
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}
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return w;
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}
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};
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Plot::Plot( QWidget *parent ):
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QwtPlot( parent )
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{
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setAutoReplot( false );
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setTitle( "Movable Items" );
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const int margin = 5;
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setContentsMargins( margin, margin, margin, margin );
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setAutoFillBackground( true );
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setPalette( QColor( "DimGray" ).lighter( 110 ) );
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QwtPlotCanvas *canvas = new QwtPlotCanvas();
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#if 0
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// a gradient making a replot slow on X11
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canvas->setStyleSheet(
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"border: 2px solid Black;"
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"border-radius: 15px;"
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"background-color: qlineargradient( x1: 0, y1: 0, x2: 0, y2: 1,"
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"stop: 0 LemonChiffon, stop: 0.5 PaleGoldenrod, stop: 1 LemonChiffon );"
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);
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#else
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canvas->setStyleSheet(
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"border: 2px inset DimGray;"
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"border-radius: 15px;"
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"background: LemonChiffon;"
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);
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#endif
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setCanvas( canvas );
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insertLegend( new Legend(), QwtPlot::RightLegend );
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populate();
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updateAxes();
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for ( int axis = 0; axis < QwtPlot::axisCnt; axis++ )
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setAxisAutoScale( axis, false );
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d_editor = new Editor( this );
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( void ) new QwtPlotMagnifier( canvas );
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}
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void Plot::populate()
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{
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addShape( "Rectangle", ShapeFactory::Rect, "RoyalBlue",
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QPointF( 30.0, 50.0 ), QSizeF( 40.0, 50.0 ) );
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addShape( "Ellipse", ShapeFactory::Ellipse, "IndianRed",
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QPointF( 80.0, 130.0 ), QSizeF( 50.0, 40.0 ) );
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addShape( "Ring", ShapeFactory::Ring, "DarkOliveGreen",
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QPointF( 30.0, 165.0 ), QSizeF( 40.0, 40.0 ) );
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addShape( "Triangle", ShapeFactory::Triangle, "SandyBrown",
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QPointF( 165.0, 165.0 ), QSizeF( 60.0, 40.0 ) );
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addShape( "Star", ShapeFactory::Star, "DarkViolet",
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QPointF( 165.0, 50.0 ), QSizeF( 40.0, 50.0 ) );
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addShape( "Hexagon", ShapeFactory::Hexagon, "DarkSlateGray",
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QPointF( 120.0, 70.0 ), QSizeF( 50.0, 50.0 ) );
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}
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void Plot::addShape( const QString &title,
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ShapeFactory::Shape shape, const QColor &color,
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const QPointF &pos, const QSizeF &size )
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{
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QwtPlotShapeItem *item = new QwtPlotShapeItem( title );
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item->setItemAttribute( QwtPlotItem::Legend, true );
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item->setLegendMode( QwtPlotShapeItem::LegendShape );
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item->setLegendIconSize( QSize( 20, 20 ) );
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item->setRenderHint( QwtPlotItem::RenderAntialiased, true );
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item->setShape( ShapeFactory::path( shape, pos, size ) );
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QColor fillColor = color;
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fillColor.setAlpha( 200 );
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QPen pen( color, 3 );
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pen.setJoinStyle( Qt::MiterJoin );
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item->setPen( pen );
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item->setBrush( fillColor );
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item->attach( this );
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}
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void Plot::exportPlot()
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{
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QwtPlotRenderer renderer;
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renderer.exportTo( this, "shapes.pdf" );
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}
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void Plot::setMode( int mode )
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{
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d_editor->setMode( static_cast<Editor::Mode>( mode ) );
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}
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