qgsrasterbandcombobox.h

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/***************************************************************************
    qgsrasterbandcombobox.h
    -----------------------
    begin                : May 2017
    copyright            : (C) 2017 by 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 QGSRASTERBANDCOMBOBOX_H
#define QGSRASTERBANDCOMBOBOX_H
 
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgsrasterlayer.h"
 
#include <QComboBox>
#include <QPointer>
 
class QgsMapLayer;
class QgsRasterDataProvider;

class GUI_EXPORT QgsRasterBandComboBox : public QComboBox
{
    Q_OBJECT
    Q_PROPERTY( int band READ currentBand WRITE setBand NOTIFY bandChanged )
 
  public:
    QgsRasterBandComboBox( QWidget *parent SIP_TRANSFERTHIS = nullptr );

    QgsRasterLayer *layer() const;

    int currentBand() const;

    bool isShowingNotSetOption() const;

    void setShowNotSetOption( bool show, const QString &string = QString() );

    static QString displayBandName( QgsRasterDataProvider *provider, int band );
 
  public slots:

    void setLayer( QgsMapLayer *layer );

    void setBand( int band );
 
  signals:

    void bandChanged( int band );
 
  private:
    QPointer<QgsRasterLayer> mLayer;
 
    bool mShowNotSet = false;
    QString mNotSetString;
    int mPrevBand = -1;
};
 
#endif // QGSRASTERBANDCOMBOBOX_H