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/**
* Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
*
* This file is part of the KD Chart library.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "timechartmodel.h"
TimeChartModel::TimeChartModel( QObject* parent )
: QSortFilterProxyModel( parent )
{
}
QPair< QDateTime, QDateTime > TimeChartModel::visibleRange() const
{
return range;
}
void TimeChartModel::setVisibleRange( const QDateTime& start, const QDateTime& end )
{
const QPair< QDateTime, QDateTime > r = qMakePair( start, end );
if ( r == range )
return;
range = r;
invalidateFilter();
}
void TimeChartModel::setVisibleStart( const QDateTime& start )
{
setVisibleRange( start, range.second );
}
void TimeChartModel::setVisibleEnd( const QDateTime& end )
{
setVisibleRange( range.first, end );
}
/*!
\reimp
*/
QVariant TimeChartModel::data( const QModelIndex& index, int role ) const
{
const QVariant v = QSortFilterProxyModel::data( index, role );
if ( index.column() % 2 != 0 || role != Qt::DisplayRole )
return v;
else
return QDateTime::fromSecsSinceEpoch( 0 ).secsTo( v.toDateTime() ) / 3600.0;
}
/*!
\reimp
*/
bool TimeChartModel::filterAcceptsRow( int source_row, const QModelIndex& source_parent ) const
{
const QModelIndex index = sourceModel()->index( source_row, 0, source_parent );
const QDateTime date = index.data().toDateTime();
return ( date >= range.first || range.first.isNull() ) &&
( date <= range.second || range.second.isNull() );
}
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