inst/examples/qt/qtdensity.h

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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// Qt usage example for RInside, inspired by the standard 'density
// sliders' example for other GUI toolkits
//
// Copyright (C) 2011  Dirk Eddelbuettel and Romain Francois

#ifndef QTDENSITY_H
#define QTDENSITY_H

#include <RInside.h>

#include <QMainWindow>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>
#include <QLabel>
#include <QTemporaryFile>
#include <QSvgWidget>

class QtDensity : public QMainWindow
{
    Q_OBJECT

    public:
    QtDensity(RInside & R);

private slots:
    void getBandwidth(int bw);
    void getKernel(int kernel);
    void getRandomDataCmd(QString txt);
    void runRandomDataCmd(void);

private:
    void setupDisplay(void);    // standard GUI boilderplate of arranging things
    void plot(void);            // run a density plot in R and update the
    void filterFile(void);      // modify the richer SVG produced by R

    QSvgWidget *m_svg;          // the SVG device
    RInside & m_R;              // reference to the R instance passed to constructor
    QString m_tempfile;         // name of file used by R for plots
    QString m_svgfile;          // another temp file, this time from Qt
    int m_bw, m_kernel;         // parameters used to estimate the density
    QString m_cmd;              // random draw command string
};

#endif