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  • Committer: Bazaar Package Importer
  • Author(s): Ruben Molina
  • Date: 2009-09-06 11:34:04 UTC
  • Revision ID: james.westby@ubuntu.com-20090906113404-4awaey82l3686w4q
Tags: upstream-0.2.3
Import upstream version 0.2.3

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scidavis/src/future/core/datatypes/Double2DateTimeFilter.h
 
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/***************************************************************************
 
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    File                 : Double2DateTimeFilter.h
 
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    Project              : SciDAVis
 
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    --------------------------------------------------------------------
 
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    Copyright            : (C) 2007 by Knut Franke, Tilman Benkert
 
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    Email (use @ for *)  : knut.franke*gmx.de, thzs@gmx.net
 
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    Description          : Conversion filter double -> QDateTime, interpreting
 
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                           the input numbers as (fractional) Julian days.
 
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 ***************************************************************************/
 
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/***************************************************************************
 
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 *                                                                         *
 
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 *  This program is free software; you can redistribute it and/or modify   *
 
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 *  it under the terms of the GNU General Public License as published by   *
 
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 *  the Free Software Foundation; either version 2 of the License, or      *
 
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 *  (at your option) any later version.                                    *
 
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 *                                                                         *
 
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 *  This program is distributed in the hope that it will be useful,        *
 
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
 
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 *  GNU General Public License for more details.                           *
 
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 *                                                                         *
 
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 *   You should have received a copy of the GNU General Public License     *
 
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 *   along with this program; if not, write to the Free Software           *
 
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 *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
 
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 *   Boston, MA  02110-1301  USA                                           *
 
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 *                                                                         *
 
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 ***************************************************************************/
 
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#ifndef DOUBLE2DATE_TIME_FILTER_H
 
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#define DOUBLE2DATE_TIME_FILTER_H
 
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#include "../AbstractSimpleFilter.h"
 
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#include <QDateTime>
 
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#include <QDate>
 
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#include <QTime>
 
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#include "lib/XmlStreamReader.h"
 
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#include <QXmlStreamWriter>
 
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//! Conversion filter double -> QDateTime, interpreting the input numbers as (fractional) Julian days.
 
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class Double2DateTimeFilter : public AbstractSimpleFilter
 
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{
 
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        Q_OBJECT
 
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        public:
 
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                virtual QDate dateAt(int row) const {
 
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                        if (!d_inputs.value(0)) return QDate();
 
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                        return QDate::fromJulianDay(qRound(d_inputs.value(0)->valueAt(row)));
 
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                }
 
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                virtual QTime timeAt(int row) const {
 
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                        if (!d_inputs.value(0)) return QTime();
 
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                        double input_value = d_inputs.value(0)->valueAt(row);
 
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                        // we only want the digits behind the dot and 
 
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                        // convert them from fraction of day to milliseconds
 
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                        return QTime(12,0,0,0).addMSecs(int( (input_value - int(input_value)) * 86400000.0 ));
 
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                }
 
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                virtual QDateTime dateTimeAt(int row) const {
 
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                        return QDateTime(dateAt(row), timeAt(row));
 
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                }
 
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                //! Return the data type of the column
 
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                virtual SciDAVis::ColumnDataType dataType() const { return SciDAVis::TypeQDateTime; }
 
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        protected:
 
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                //! Using typed ports: only double inputs are accepted.
 
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                virtual bool inputAcceptable(int, const AbstractColumn *source) {
 
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                        return source->dataType() == SciDAVis::TypeDouble;
 
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                }
 
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};
 
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#endif // ifndef DOUBLE2DATE_TIME_FILTER_H
 
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