qgsdatumtransformdialog.h

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/***************************************************************************
                         qgsdatumtransformdialog.h
                         -------------------------
    begin                : November 2013
    copyright            : (C) 2013 by Marco Hugentobler
    email                : marco.hugentobler at sourcepole dot ch
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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 QGSDATUMTRANSFORMDIALOG_H
#define QGSDATUMTRANSFORMDIALOG_H
 
#include "ui_qgsdatumtransformdialogbase.h"
#include "qgscoordinatereferencesystem.h"
#include "qgscoordinatetransform.h"
#include "qgsguiutils.h"
#include "qgis_gui.h"
 
#define SIP_NO_FILE
 
class GUI_EXPORT QgsDatumTransformDialog : public QDialog, private Ui::QgsDatumTransformDialogBase
{
    Q_OBJECT
  public:
 
    struct TransformInfo
    {
      QgsCoordinateReferenceSystem sourceCrs;
 
      int sourceTransformId = -1;
 
      QgsCoordinateReferenceSystem destinationCrs;
 
      int destinationTransformId = -1;
 
      QString proj;
 
      bool allowFallback = true;
    };
 
    static bool run( const QgsCoordinateReferenceSystem &sourceCrs = QgsCoordinateReferenceSystem(),
                     const QgsCoordinateReferenceSystem &destinationCrs = QgsCoordinateReferenceSystem(),
                     QWidget *parent = nullptr,
                     QgsMapCanvas *mapCanvas = nullptr,
                     const QString &windowTitle = QString() );
 
    // TODO QGIS 4.0 - remove selectedDatumTransform, forceChoice
 
    QgsDatumTransformDialog( const QgsCoordinateReferenceSystem &sourceCrs = QgsCoordinateReferenceSystem(),
                             const QgsCoordinateReferenceSystem &destinationCrs = QgsCoordinateReferenceSystem(),
                             bool allowCrsChanges = false,
                             bool showMakeDefault = true,
                             bool forceChoice = true,
                             QPair<int, int> selectedDatumTransforms = qMakePair( -1, -1 ),
                             QWidget *parent = nullptr,
                             Qt::WindowFlags f = nullptr,
                             const QString &selectedProj = QString(),
                             QgsMapCanvas *mapCanvas = nullptr,
                             bool allowFallback = true );
 
    void accept() override;
    void reject() override;
 
    TransformInfo selectedDatumTransform();
 
  private slots:
 
    void operationChanged();
    void setSourceCrs( const QgsCoordinateReferenceSystem &sourceCrs );
    void setDestinationCrs( const QgsCoordinateReferenceSystem &destinationCrs );
 
  private:
 
    enum Roles
    {
      TransformIdRole = Qt::UserRole + 1,
      ProjRole,
      AvailableRole,
      BoundsRole
    };
 
    bool gridShiftTransformation( const QString &itemText ) const;
 
    void setOKButtonEnabled();
 
    bool shouldAskUserForSelection() const;
 
    TransformInfo defaultDatumTransform() const;
 
    void applyDefaultTransform();
 
    std::unique_ptr< QgsTemporaryCursorRestoreOverride > mPreviousCursorOverride;
 
    friend class TestQgsDatumTransformDialog;
};
 
#endif // QGSDATUMTRANSFORMDIALOG_H