qgslayoutunitscombobox.h

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/***************************************************************************
                             qgslayoutunitscombobox.h
                             ------------------------
    Date                 : July 2017
    Copyright            : (C) 2017 Nyall Dawson
    Email                : nyall dot dawson at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
#ifndef QGSLAYOUTUNITSCOMBOBOX_H
#define QGSLAYOUTUNITSCOMBOBOX_H

#include <QComboBox>
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgsunittypes.h"
#include <QDoubleSpinBox>
#include <QPointer>

class QgsLayoutMeasurementConverter;

class GUI_EXPORT QgsLayoutUnitsComboBox : public QComboBox
{
    Q_OBJECT
    Q_PROPERTY( QgsUnitTypes::LayoutUnit unit READ unit WRITE setUnit NOTIFY changed )

  public:

    QgsLayoutUnitsComboBox( QWidget *parent SIP_TRANSFERTHIS = nullptr );

    QgsUnitTypes::LayoutUnit unit() const;

    void setUnit( QgsUnitTypes::LayoutUnit unit );

    void linkToWidget( QDoubleSpinBox *widget );

    QgsLayoutMeasurementConverter *converter() const;

    void setConverter( QgsLayoutMeasurementConverter *converter );

  signals:

    void changed( QgsUnitTypes::LayoutUnit unit );

  private slots:

    void indexChanged( int index );

  private:

    QgsLayoutMeasurementConverter *mConverter = nullptr;

    QgsUnitTypes::LayoutUnit mOldUnit = QgsUnitTypes::LayoutMillimeters;

    QList< QPointer< QDoubleSpinBox > > mLinkedSpinBoxes;
};

#endif // QGSLAYOUTUNITSCOMBOBOX_H