#include "echogram.h"

/* Function: Echogram
 * Params In
 *  PlotOptions p: Structure containing the options used for plotting.
 *  int chanSize: The number of radar channels.
 *  QWidget* parent: Pointer to the parent window.
 *  MatrixData* data: Pointer to the shared data container.
 * Return
 *  N/A
 * Purpose
 *  Default constructor.  Sets up the Echogram window, creates the menu, and connects
 *  signals to slots.
 */
Echogram::Echogram( PlotOptions* p, int chanSize, QWidget *parent, MatrixData* data ):QMainWindow( parent )
{
    plot = p;
    setWindowTitle( "Echogram Window" );
    createMenus();
    QVBoxLayout* mainLayout = new QVBoxLayout;
    echoPlot = new Plot( p, this, data );
    mainLayout->addWidget( buttonBox );
    mainLayout->addWidget( echoPlot );

    setCentralWidget( new QWidget() );
    centralWidget()->setLayout( mainLayout );
    setStatusBarText();

    connect( this, SIGNAL( windowClosed( QObject* ) ), parent, SLOT( deleteEWindow( QObject* ) ) );
    connect( this, SIGNAL( updateWin( PlotOptions* ) ), parent, SLOT( updateWinOptions( PlotOptions* ) ) );
}

Echogram::~Echogram()
{
    //delete [] echoPlot;
    //delete [] plot;
    //delete [] buttons[ numButtons ];
    //delete [] buttonBox;
}

/* Function: redraw
 * Params In
 *  N/A
 * Return
 *  N/A
 * Purpose
 *  Calls the plot window's redraw function.
 */
void Echogram::redraw()
{
    echoPlot->redraw();
}

void Echogram::setStatusBarText()
{
    QString statusText;
    statusText = "Depth: ";
    if( plot->depthType == 0 )
    {
        statusText.append( "Air" );
    }
    else if( plot->depthType == 1 )
    {
        statusText.append( "Ice" );
    }
    else
    {
        statusText.append( "Time" );
    }
    statusText.append( "  - Data: " );
    if( plot->dataType == 0 )
    {
        statusText.append( "Raw" );
    }
    else if( plot->dataType == 1 )
    {
        statusText.append( "Freq." );
    }
    else
    {
        statusText.append( "Compressed" );
    }
    statusText.append( " - Mag: " );
    if( plot->dataScale == 0 )
    {
        statusText.append( "Linear" );
    }
    else
    {
        statusText.append( "Log" );
    }
    statusText.append( " - Time Offset: " );
    QString time;
    time.setNum( plot->timeOffset );
    statusText.append( time );

    statusBar()->showMessage( statusText );
}

/* Function: closeEvent
 * Params In
 *  QCloseEvent* event
 * Return
 *  N/A
 * Purpose
 *  Redefinition of the closeEvent function.  Instead of just exiting the window, emits the
 *  windowClosed signal, which will call a function in the parent to cleanup the list of
 *  open windows, as this window is not open.
 */
void Echogram::closeEvent( QCloseEvent* event )
{
    emit windowClosed( this );
}

/* Function: createMenus
 * Params In
 *  N/A
 * Return
 *  N/A
 * Purpose
 *  Creates the menu system for the window. As of now, only includes the 'Update' button.
 */
void Echogram::createMenus()
{
    buttonBox = new QGroupBox( tr( "Update Window Parameters" ) );
    QHBoxLayout *layout = new QHBoxLayout;

    //Create the update button, then add connections for the event
    //when it is clicked.
    buttons[0] = new QPushButton( tr( "Update" ) );
    buttons[1] = new QPushButton( tr( "Print" ) );
    layout->addWidget( buttons[0] );
    layout->addWidget( buttons[1] );
    connect( buttons[0], SIGNAL( clicked() ), this, SLOT( updateWindow() ) );
    connect( buttons[1], SIGNAL( clicked() ), this, SLOT( printWindow() ) );
    buttonBox->setLayout( layout );
}

/* Function: updateWindow
 * Params In
 *  N/A
 * Return
 *  N/A
 * Purpose
 *  Emits the updateWin signal which calls a function in the parent to copy the newest
 *  options to the DataOptions structure for the window.
 */
void Echogram::updateWindow()
{
     emit updateWin( plot );
     reset();
}

void Echogram::reset()
{
    echoPlot->clear();
    //echoPlot->reset();
    setStatusBarText();
}

void Echogram::printWindow()
{
    QPrinter printer;
    printer.setOutputFileName("/tmp/echogram.pdf");

    QString docName = echoPlot->title().text();
    if ( !docName.isEmpty() )
    {
        docName.replace (QRegExp (QString::fromLatin1 ("\n")), tr (" -- "));
        printer.setDocName (docName);
    }

    printer.setCreator("Bode example");
    printer.setOrientation(QPrinter::Landscape);

    QPrintDialog dialog(&printer);
    if ( dialog.exec() )
    {
        QwtPlotPrintFilter filter;
        if ( printer.colorMode() == QPrinter::GrayScale )
        {
            int options = QwtPlotPrintFilter::PrintAll;
            options &= ~QwtPlotPrintFilter::PrintBackground;
            options |= QwtPlotPrintFilter::PrintFrameWithScales;
            filter.setOptions(options);
        }
        echoPlot->print(printer, filter);
    }
}