qgsprojectionselectionwidget.h

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/***************************************************************************
    qgsprojectionselectionwidget.h
     --------------------------------------
    Date                 : 05.01.2015
    Copyright            : (C) 2015 Denis Rouzaud
    Email                : [email protected]
 ***************************************************************************
 *                                                                         *
 *   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 QGSPROJECTIONSELECTIONWIDGET_H
#define QGSPROJECTIONSELECTIONWIDGET_H
 
#include <QWidget>
#include "qgis_sip.h"
#include <QLineEdit>
#include <QToolButton>
#include <QComboBox>
 
#include "qgscoordinatereferencesystem.h"
#include "qgis_gui.h"
 
class QgsProjectionSelectionDialog;
class QgsHighlightableComboBox;
 
class GUI_EXPORT QgsProjectionSelectionWidget : public QWidget
{
    Q_OBJECT
  public:
 
    enum CrsOption
    {
      LayerCrs, 
      ProjectCrs, 
      CurrentCrs, 
      DefaultCrs, 
      RecentCrs, 
      CrsNotSet, 
    };
 
    explicit QgsProjectionSelectionWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
    QgsCoordinateReferenceSystem crs() const;
 
    void setOptionVisible( CrsOption option, bool visible );
 
    bool optionVisible( CrsOption option ) const;
 
    void setNotSetText( const QString &text );
 
    void setMessage( const QString &text );
 
    static QString crsOptionText( const QgsCoordinateReferenceSystem &crs ) SIP_SKIP;
 
  signals:
 
    void crsChanged( const QgsCoordinateReferenceSystem & );
 
    void cleared();
 
  public slots:
 
    void setCrs( const QgsCoordinateReferenceSystem &crs );
 
    void setLayerCrs( const QgsCoordinateReferenceSystem &crs );
 
    void selectCrs();
 
  protected:
 
    void dragEnterEvent( QDragEnterEvent *event ) override;
    void dragLeaveEvent( QDragLeaveEvent *event ) override;
    void dropEvent( QDropEvent *event ) override;
 
  private:
 
    QgsCoordinateReferenceSystem mCrs;
    QgsCoordinateReferenceSystem mLayerCrs;
    QgsCoordinateReferenceSystem mProjectCrs;
    QgsCoordinateReferenceSystem mDefaultCrs;
    QgsHighlightableComboBox *mCrsComboBox = nullptr;
    QToolButton *mButton = nullptr;
    QgsProjectionSelectionDialog *mDialog = nullptr;
    QString mNotSetText;
    QString mMessage;
 
    void addNotSetOption();
    void addProjectCrsOption();
    void addDefaultCrsOption();
    void addCurrentCrsOption();
 
    void addRecentCrs();
    bool crsIsShown( long srsid ) const;
 
    int firstRecentCrsIndex() const;
    void updateTooltip();
 
    QgsMapLayer *mapLayerFromMimeData( const QMimeData *data ) const;
 
  private slots:
 
    void comboIndexChanged( int idx );
 
};
 
#endif // QGSPROJECTIONSELECTIONWIDGET_H