ClusterDialog.h

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#ifndef CLUSTERDIALOG_H
#define CLUSTERDIALOG_H

#include <QtGui>

// #define CLUSTERDIALOG_MODELESS


class ClusterDialog: public QDialog
{
        Q_OBJECT
        
#ifdef CLUSTERDIALOG_MODELESS
signals:
        void preview( unsigned int k );
        void cluster( unsigned int k );
#endif

public:
        ClusterDialog( QWidget* parent=0 )
        : QDialog( parent )
        {
                m_clusterSpinBox = new QSpinBox;
                m_clusterSpinBox->setRange( 2, 23 );
                m_clusterSpinBox->setValue( 5 );
                
                QLabel* clusterLabel = new QLabel( tr("Number of clusters") );
                clusterLabel->setBuddy( m_clusterSpinBox );

#ifdef CLUSTERDIALOG_MODELESS           
                QPushButton* previewBut = new QPushButton( tr("Preview") );
                QPushButton* applyBut   = new QPushButton( tr("Apply") );
#else
                QPushButton* abortBut   = new QPushButton( tr("Cancel") );
#endif          
                QPushButton* doneBut    = new QPushButton( tr("Done") );
                doneBut->setDefault( true );
                
                
                QHBoxLayout* clusterLayout = new QHBoxLayout;
                clusterLayout->addWidget( clusterLabel );
                clusterLayout->addWidget( m_clusterSpinBox );

#ifdef CLUSTERDIALOG_MODELESS
                QVBoxLayout* butLayout = new QVBoxLayout;
                butLayout->addWidget( previewBut );
                butLayout->addWidget( applyBut );
#endif
                
                QHBoxLayout* doneLayout = new QHBoxLayout;
                doneLayout->addStretch( 3 );
#ifndef CLUSTERDIALOG_MODELESS
                doneLayout->addWidget( abortBut );
#endif
                doneLayout->addWidget( doneBut );
                
                QVBoxLayout* layout = new QVBoxLayout;
                layout->addLayout( clusterLayout );
#ifdef CLUSTERDIALOG_MODELESS
                layout->addLayout( butLayout );
#endif
                layout->addLayout( doneLayout );
                
                setLayout( layout );
                setWindowTitle( tr("Cluster Events") );
                setFixedSize( sizeHint() );
                
                
#ifdef CLUSTERDIALOG_MODELESS
                connect( previewBut, SIGNAL(clicked()), this, SLOT(preview()));
                connect( applyBut,   SIGNAL(clicked()), this, SLOT(apply())  );
#else
                connect( abortBut,   SIGNAL(clicked()), this, SLOT(reject()) );
#endif
                connect( doneBut,    SIGNAL(clicked()), this, SLOT(accept()) );
        }

#ifdef CLUSTERDIALOG_MODELESS
protected slots:
        void apply()
        {
                emit cluster( (unsigned int)m_clusterSpinBox->value() );
        }
        
        void preview()
        {
                emit preview( (unsigned int)m_clusterSpinBox->value() );
        }
#else
public:
        unsigned int getNumClusters() const { return (unsigned int)m_clusterSpinBox->value(); }
#endif

private:
        QSpinBox* m_clusterSpinBox;
};

#endif // CLUSTERDIALOG_H