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Viewing changes to scidavis/src/future/core/datatypes/String2DayOfWeekFilter.h

  • 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/String2DayOfWeekFilter.h
 
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/***************************************************************************
 
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    File                 : String2DayOfWeekFilter.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 String -> QDateTime, interpreting
 
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                           the input as days of the week (either numeric or "Mon" etc).
 
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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 STRING2DAYOFWEEK_FILTER_H
 
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#define STRING2DAYOFWEEK_FILTER_H
 
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#include "../AbstractSimpleFilter.h"
 
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#include <QDateTime>
 
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#include <math.h>
 
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#include "lib/XmlStreamReader.h"
 
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#include <QXmlStreamWriter>
 
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//! Conversion filter String -> QDateTime, interpreting the input as days of the week (either numeric or "Mon" etc).
 
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class String2DayOfWeekFilter : 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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                {
 
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                        return dateTimeAt(row).date();
 
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                }
 
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                virtual QTime timeAt(int row) const 
 
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                {
 
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                        return dateTimeAt(row).time();
 
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                }
 
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                virtual QDateTime dateTimeAt(int row) const
 
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                {
 
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                        if (!d_inputs.value(0)) return QDateTime();
 
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                        QString input_value = d_inputs.value(0)->textAt(row);
 
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                        if (input_value.isEmpty()) return QDateTime();
 
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                        bool ok;
 
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                        int day_value = input_value.toInt(&ok);
 
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                        if(!ok)
 
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                        {
 
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#if QT_VERSION <= 0x040300  
 
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                                // workaround for Qt bug #171920
 
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                                QDate temp = QDate(1900,1,1);
 
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                                for(int i=1; i<=7; i++)
 
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                                        if( (input_value.toLower() == QDate::longDayName(i).toLower())
 
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                                                        || (input_value.toLower() == QDate::shortDayName(i).toLower()) )
 
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                                        {
 
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                                                temp = QDate(1900,1,i);
 
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                                                break;
 
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                                        }
 
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#else 
 
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                                QDate temp = QDate::fromString(input_value, "ddd");
 
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                                if(!temp.isValid())
 
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                                        temp = QDate::fromString(input_value, "dddd");
 
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#endif
 
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                                if(!temp.isValid())
 
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                                        return QDateTime();
 
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                                else
 
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                                        day_value = temp.dayOfWeek();
 
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                        }
 
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                        // Don't use Julian days here since support for years < 1 is bad
 
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                        // Use 1900-01-01 instead (a Monday)
 
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                        QDate result_date = QDate(1900,1,1).addDays(day_value - 1);
 
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                        QTime result_time = QTime(0,0,0,0);
 
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                        return QDateTime(result_date, result_time);
 
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                }
 
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                virtual bool isInvalid(int row) const { 
 
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                        const AbstractColumn *col = d_inputs.value(0);
 
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                        if (!col) return false;
 
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                        return !(dateTimeAt(row).isValid()) || col->isInvalid(row);
 
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                }
 
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                virtual bool isInvalid(Interval<int> i) const {
 
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                        if (!d_inputs.value(0)) return false;
 
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                        for (int row = i.start(); row <= i.end(); row++) {
 
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                                if (!isInvalid(row))
 
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                                        return false;
 
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                        }
 
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                        return true;
 
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                }
 
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                virtual QList< Interval<int> > invalidIntervals() const 
 
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                {
 
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                        IntervalAttribute<bool> validity;
 
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                        if (d_inputs.value(0)) {
 
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                                int rows = d_inputs.value(0)->rowCount();
 
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                                for (int i=0; i<rows; i++) 
 
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                                        validity.setValue(i, isInvalid(i));
 
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                        }
 
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                        return validity.intervals();
 
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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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                virtual bool inputAcceptable(int, const AbstractColumn *source) {
 
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                        return source->dataType() == SciDAVis::TypeQString;
 
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                }
 
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};
 
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#endif // ifndef STRING2DAYOFWEEK_FILTER_H
 
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