135 lines
3.7 KiB
C++
135 lines
3.7 KiB
C++
/*****************************************************************************
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* Qwt Examples - Copyright (C) 2002 Uwe Rathmann
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* This file may be used under the terms of the 3-clause BSD License
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*****************************************************************************/
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#include "Plot.h"
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#include "Editor.h"
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#include <QwtPlotShapeItem>
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#include <QwtPlotMagnifier>
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#include <QwtPlotCanvas>
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#include <QwtLegend>
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#include <QwtPlotRenderer>
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#include <QPen>
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#include <QPainterPath>
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namespace
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{
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class Legend : public QwtLegend
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{
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protected:
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virtual QWidget* createWidget(
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const QwtLegendData& legendData ) const QWT_OVERRIDE
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{
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QWidget* w = QwtLegend::createWidget( legendData );
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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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}
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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 < QwtAxis::AxisPositions; axis++ )
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setAxisAutoScale( axis, false );
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m_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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m_editor->setMode( static_cast< Editor::Mode >( mode ) );
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}
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#include "moc_Plot.cpp"
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