Re: print bug

[vasilief <vas...@pc...>]

Le Vendredi 12 Novembre 2004 17:45, Gerard Vermeulen a =E9crit=A0:

Hi,

Here's the code:

///////////////////////////////////////////////////////////////////////////=
//////////////////
#ifdef QWT_QTOPIA
#include <qpe/qpeapplication.h>
#endif
#include <qapplication.h>
#include <qwt_plot.h>
#include <qwt_data.h>
#include <math.h>
#include <qprinter.h>

//-----------------------------------------------------------------
//              simple.cpp
//
//      A simple example which shows how to use QwtPlot and QwtData
//-----------------------------------------------------------------

class SimpleData: public QwtData
{
    // The x values depend on its index and the y values
    // can be calculated from the corresponding x value.=20
    // So we don=B4t need to store the values.
    // Such an implementation is slower because every point=20
    // has to be recalculated for every replot, but it demonstrates how
    // QwtData can be used.

public:
    SimpleData(double(*y)(double), size_t size):
        d_size(size),
        d_y(y)
    {
    }

    virtual QwtData *copy() const
    {
        return new SimpleData(d_y, d_size);
    }

    virtual size_t size() const
    {
        return d_size;
    }

    virtual double x(size_t i) const
    {
        return 0.1 * i;
    }

    virtual double y(size_t i) const
    {
        return d_y(x(i));
    }
private:
    size_t d_size;
    double(*d_y)(double);
};

class Plot : public QwtPlot
{
public:
    Plot();
};


Plot::Plot()
{
    setTitle("A Simple QwtPlot Demonstration");
 setTitleFont(QFont("Times New Roman", 14, QFont::Bold,TRUE));
    setAutoLegend(TRUE); // We want a legend
    setLegendPosition(QwtPlot::Right);

    // Set axis titles
    setAxisTitle(xBottom, "x -->");
    setAxisTitle(yLeft, "y -->");
   =20
    // Insert new curves
    long cSin =3D insertCurve("y =3D sin(x)");
    long cCos =3D insertCurve("y =3D cos(x)");

    // Set curve styles
    setCurvePen(cSin, QPen(Qt::red));
    setCurvePen(cCos, QPen(Qt::blue));

    // Create sin and cos data
    const int nPoints =3D 100;
    setCurveData(cSin, SimpleData(::sin, nPoints));
    setCurveData(cCos, SimpleData(::cos, nPoints));

    // Insert markers
   =20
    //  ...a horizontal line at y =3D 0...
    long mY =3D insertLineMarker("y =3D 0", QwtPlot::yLeft);    =20
    setMarkerYPos(mY, 0.0);

    //  ...a vertical line at x =3D 2 * pi
    long mX =3D insertLineMarker("x =3D 2 pi", QwtPlot::xBottom);
    setMarkerXPos(mX, 6.284);
=20
 QFont italicFont=3DQFont("Times New Roman", 12, QFont::Bold,TRUE);
 for (int i=3D 0;i<QwtPlot::axisCnt;i++)
   {
   setAxisFont (i,italicFont);
   setAxisTitleFont (i,italicFont);
   }

    replot();
  =20
 QPrinter printer;
 printer.setOrientation(QPrinter::Landscape);
 printer.setColorMode (QPrinter::Color);
 printer.setFullPage(TRUE);

 printer.setOutputToFile (TRUE);
 printer.setOutputFileName("test_italicFonts.eps");
=20
 QwtPlotPrintFilter  filter;=20
 filter.setOptions(QwtPlotPrintFilter::PrintAll);=20
 print(printer, filter);=20
}

int main(int argc, char **argv)
{
#ifdef QWT_QTOPIA
    QPEApplication a(argc, argv);
#else
    QApplication a(argc, argv);
#endif

    Plot plot;
    a.setMainWidget(&plot);
    plot.resize(500,300);
    plot.show();
    return a.exec();=20
}
//////////////////////////////////////////////////

And concerning the EPS export for Windows, I'm using Qt Non-Commercial 3.2.=
1=20
and not Qt 2.3.0. So, is there a chance to produce EPS output from a QwtPlo=
t=20
with this version of Qt?

Best regards,
Ion