qgsextentgroupbox.h

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#ifndef QGSEXTENTGROUPBOX_H
#define QGSEXTENTGROUPBOX_H

#include "qgscollapsiblegroupbox.h"

#include "ui_qgsextentgroupboxwidget.h"

#include "qgscoordinatereferencesystem.h"
#include "qgsrectangle.h"

class QgsCoordinateReferenceSystem;

class GUI_EXPORT QgsExtentGroupBox : public QgsCollapsibleGroupBox, private Ui::QgsExtentGroupBoxWidget
{
    Q_OBJECT
    Q_PROPERTY( QString titleBase READ titleBase WRITE setTitleBase )

  public:
    explicit QgsExtentGroupBox( QWidget* parent = nullptr );

    enum ExtentState
    {
      OriginalExtent,  
      CurrentExtent,   
      UserExtent,      
    };

    void setOriginalExtent( const QgsRectangle& originalExtent, const QgsCoordinateReferenceSystem& originalCrs );

    QgsRectangle originalExtent() const { return mOriginalExtent; }
    const QgsCoordinateReferenceSystem& originalCrs() const { return mOriginalCrs; }

    void setCurrentExtent( const QgsRectangle& currentExtent, const QgsCoordinateReferenceSystem& currentCrs );

    QgsRectangle currentExtent() const { return mCurrentExtent; }
    const QgsCoordinateReferenceSystem& currentCrs() const { return mCurrentCrs; }

    void setOutputCrs( const QgsCoordinateReferenceSystem& outputCrs );

    QgsRectangle outputExtent() const;

    ExtentState extentState() const { return mExtentState; }

    void setTitleBase( const QString& title );
    QString titleBase() const;

  public slots:
    void setOutputExtentFromOriginal();

    void setOutputExtentFromCurrent();

    void setOutputExtentFromUser( const QgsRectangle& extent, const QgsCoordinateReferenceSystem& crs );

  signals:
    void extentChanged( const QgsRectangle& r );

  protected slots:

    void on_mXMinLineEdit_textEdited( const QString & ) { setOutputExtentFromLineEdit(); }
    void on_mXMaxLineEdit_textEdited( const QString & ) { setOutputExtentFromLineEdit(); }
    void on_mYMinLineEdit_textEdited( const QString & ) { setOutputExtentFromLineEdit(); }
    void on_mYMaxLineEdit_textEdited( const QString & ) { setOutputExtentFromLineEdit(); }

    void groupBoxClicked();

  protected:
    void setOutputExtent( const QgsRectangle& r, const QgsCoordinateReferenceSystem& srcCrs, ExtentState state );
    void setOutputExtentFromLineEdit();
    void updateTitle();

    QString mTitleBase;

    ExtentState mExtentState;

    QgsCoordinateReferenceSystem mOutputCrs;

    QgsRectangle mCurrentExtent;
    QgsCoordinateReferenceSystem mCurrentCrs;

    QgsRectangle mOriginalExtent;
    QgsCoordinateReferenceSystem mOriginalCrs;
};

#endif // QGSEXTENTGROUPBOX_H