custom_data_type.cpp

/****************************************************************************
** $RCSfile: cdt_cpp.html,v $ $Date: 2008/06/23 16:32:05 $
**
** Copyright ( C ) 2002-2006 Integrated Computer Solutions, Inc.
** All rights reserved.
**
** This file is part of an example program for QicsTable.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

// This is an example of a custom data type.  This data type represents
// a QPoint value.

#include "custom_data_type.h"

QicsDataQPoint::QicsDataQPoint() :
    QicsDataItem()
{
}
QicsDataQPoint::QicsDataQPoint(const QPoint &p) :
    QicsDataItem()
{
    setData(p);
}

QicsDataQPoint::QicsDataQPoint(const QicsDataQPoint &di) :
    QicsDataItem()
{
    setData(di.data());
}

bool
QicsDataQPoint::setString(const QString &str) 
{
    // This is very simple.  There should be more error checking
    // in a robust version of this class

    int x = (str.right(str.length() - 1)).section(',', 0, 0).toInt();
    int y = (str.left(str.length() - 1)).section(',', 1, 1).toInt();

    setData(QPoint(x, y));
    return true;
}

        
QString
QicsDataQPoint::format(const char *fmt_string) const
{
    QString str;

    return str.sprintf(fmt_string, myData.x(), myData.y());
}

int
QicsDataQPoint::compareTo(const QicsDataItem &x) const
{
    Q_ASSERT(this->type() == x.type());

    const QicsDataQPoint *v = dynamic_cast<const QicsDataQPoint *> (&x);
    Q_ASSERT(v != NULL);

    if (myData.x() < v->myData.x())
    return -1;
    else if (myData.x() > v->myData.x())
    return 1;
    else
    {
    if (myData.y() < v->myData.y())
        return -1;
    else if (myData.y() > v->myData.y())
        return 1;
    else
        return 0;
    }
}

void
QicsDataQPoint::encode(QDataStream &ds) const 
{
    ds << typeString(); ds << myData;
}

QicsDataItem *
QicsDataQPoint::fromString(const QString &str)
{
    QicsDataQPoint *qp = new QicsDataQPoint();

    if (qp->setString(str))
    return qp;
    else
    {
    delete qp;
    return 0;
    }
}

QicsDataItem *
QicsDataQPoint::decode(QDataStream &ds)
{
    QPoint val;

    ds >> val;
    return new QicsDataQPoint(val);
}