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124 lines
3.0 KiB
C++
124 lines
3.0 KiB
C++
/***************************************************************************
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qgsaggregatetoolbutton.cpp
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--------------------------------------
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Date : Nov 2017
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Copyright : (C) 2017 Matthias Kuhn
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Email : matthias@opengis.ch
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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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***************************************************************************/
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#include "qgsaggregatetoolbutton.h"
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#include "qgsaggregatecalculator.h"
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#include <QMenu>
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QgsAggregateToolButton::QgsAggregateToolButton()
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{
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setFocusPolicy( Qt::StrongFocus );
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setPopupMode( QToolButton::InstantPopup );
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mMenu = new QMenu( this );
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connect( mMenu, &QMenu::aboutToShow, this, &QgsAggregateToolButton::aboutToShowMenu );
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setMenu( mMenu );
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setText( tr( "Exclude" ) );
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}
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void QgsAggregateToolButton::setType( QVariant::Type type )
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{
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if ( mType == type )
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return;
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mType = type;
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updateAvailableAggregates();
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}
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void QgsAggregateToolButton::aboutToShowMenu()
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{
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mMenu->clear();
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QAction *action = mMenu->addAction( tr( "Exclude" ) );
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connect( action, &QAction::triggered, this, [ this ]
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{
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setActive( false );
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} );
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for ( const auto &aggregate : qgis::as_const( mAvailableAggregates ) )
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{
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QAction *action = mMenu->addAction( aggregate.name );
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connect( action, &QAction::triggered, this, [ this, aggregate ]
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{
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setText( aggregate.name );
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setAggregate( aggregate.function );
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} );
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}
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}
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void QgsAggregateToolButton::updateAvailableAggregates()
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{
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QList<QgsAggregateCalculator::AggregateInfo> aggregates = QgsAggregateCalculator::aggregates();
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for ( const auto &aggregate : aggregates )
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{
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if ( aggregate.supportedTypes.contains( mType ) )
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{
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mAvailableAggregates.append( aggregate );
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}
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}
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}
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void QgsAggregateToolButton::setActive( bool active )
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{
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if ( active == mActive )
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return;
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mActive = active;
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if ( !active )
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setText( tr( "Exclude" ) );
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emit activeChanged();
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}
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QString QgsAggregateToolButton::aggregate() const
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{
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return mAggregate;
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}
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void QgsAggregateToolButton::setAggregate( const QString &aggregate )
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{
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if ( aggregate == mAggregate )
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return;
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mAggregate = QString();
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for ( const auto &agg : qgis::as_const( mAvailableAggregates ) )
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{
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if ( agg.function == aggregate )
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{
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mAggregate = aggregate;
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setText( agg.name );
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break;
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}
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}
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setActive( !mAggregate.isEmpty() );
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emit aggregateChanged();
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}
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bool QgsAggregateToolButton::active() const
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{
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return mActive;
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}
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QVariant::Type QgsAggregateToolButton::type() const
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{
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return mType;
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}
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