Esempio n. 1
0
Plot::Plot( QWidget *parent ):
    QwtPlot( parent ),
    d_curve( NULL )
{
    /*canvas()->setStyleSheet(
        "border: 2px solid Black;"
        "border-radius: 15px;"
        "background-color: qlineargradient( x1: 0, y1: 0, x2: 0, y2: 1,"
            "stop: 0 LemonChiffon, stop: 1 PaleGoldenrod );"
    );*/
    //QwtPlotCanvas *newcanvas=new QwtPlotCanvas();
    //newcanvas->setPalette(Qt::white);
    //newcanvas->setBorderRadius(10);
    //setCanvas( newcanvas );
    //plotLayout()->setAlignCanvasToScales( true );
    setAxisTitle( QwtPlot::yLeft, "ylabel" );
    setAxisTitle( QwtPlot::xBottom, "xlabel" );
    //setAxisScale(QwtPlot::yLeft,0.0,25.0);
    //setAxisScale(QwtPlot::xBottom,0.0,25.0);
    //canvas()->resize(800, 600);
    //plotLayout(AlignScales);
    // attach curve
    d_curve = new QwtPlotCurve( "Scattered Points" );
    d_curve->setPen( QColor( "Black" ) );
//    d_curve->setCurveAttribute(fitten);
    // when using QwtPlotCurve::ImageBuffer simple dots can be
    // rendered in parallel on multicore systems.
    d_curve->setRenderThreadCount( 0 ); // 0: use QThread::idealThreadCount()

    //d_curve->setCurveAttribute(QwtPlotCurve::Fitted, true);

    d_curve->attach( this );

    QwtSymbol * symbol2 = new QwtSymbol( QwtSymbol::XCross, QBrush(Qt::white), QPen(Qt::red, 1), QSize(6,6));
    //QwtSymbol::Style  style = Cross;
    setSymbol( symbol2 );
    //setSymbol(NULL);

    // panning with the left mouse button
    (void )new QwtPlotPanner( canvas() );

    // zoom in/out with the wheel
    QwtPlotMagnifier *magnifier = new QwtPlotMagnifier( canvas() );
    magnifier->setMouseButton( Qt::NoButton );

    // distanve measurement with the right mouse button
    DistancePicker *picker = new DistancePicker( canvas() );
    picker->setMousePattern( QwtPlotPicker::MouseSelect1, Qt::RightButton );
    picker->setRubberBandPen( QPen( Qt::blue ) );

    QwtPlotGrid *grid = new QwtPlotGrid;
    grid->enableX( true );//设置网格线
    grid->enableY( true );
    grid->setMajorPen( Qt::black, 0, Qt::DotLine );
    grid->attach( this );

    //QSize sizeH = sizeHint();

}
Esempio n. 2
0
void MainWindow::enableMagnifier() //приближение-удаление
{
    // #include <qwt_plot_magnifier.h>
    QwtPlotMagnifier *magnifier =
            new QwtPlotMagnifier(ui->Qwt_Widget->canvas());
    // клавиша, активирующая приближение/удаление
    magnifier->setMouseButton(Qt::MidButton);
}