qgsextentgroupbox.h

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/***************************************************************************
    qgsextentgroupbox.h
    ---------------------
    begin                : March 2014
    copyright            : (C) 2014 by Martin Dobias
    email                : wonder dot sk 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 QGSEXTENTGROUPBOX_H
#define QGSEXTENTGROUPBOX_H

#include "qgscollapsiblegroupbox.h"
#include "qgsmaptool.h"
#include "qgsmaptoolextent.h"
#include "qgis_sip.h"

#include "ui_qgsextentgroupboxwidget.h"

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

#include <memory>

class QgsCoordinateReferenceSystem;
class QgsMapLayerModel;
class QgsMapLayer;

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

  public:

    enum ExtentState
    {
      OriginalExtent,  
      CurrentExtent,   
      UserExtent,      
      ProjectLayerExtent, 
      DrawOnCanvas, 
    };

    explicit QgsExtentGroupBox( QWidget *parent SIP_TRANSFERTHIS = nullptr );

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

    QgsRectangle originalExtent() const { return mOriginalExtent; }

    QgsCoordinateReferenceSystem originalCrs() const { return mOriginalCrs; }

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

    QgsRectangle currentExtent() const { return mCurrentExtent; }

    QgsCoordinateReferenceSystem currentCrs() const { return mCurrentCrs; }

    void setOutputCrs( const QgsCoordinateReferenceSystem &outputCrs );

    QgsRectangle outputExtent() const;

    QgsCoordinateReferenceSystem outputCrs() const { return mOutputCrs; }

    QgsExtentGroupBox::ExtentState extentState() const { return mExtentState; }

    void setTitleBase( const QString &title );

    QString titleBase() const;

    void setMapCanvas( QgsMapCanvas *canvas );

    QSize ratio() const { return mRatio; }

  public slots:

    void setOutputExtentFromOriginal();

    void setOutputExtentFromCurrent();

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

    void setOutputExtentFromLayer( const QgsMapLayer *layer );

    void setOutputExtentFromDrawOnCanvas();

    void setRatio( QSize ratio ) { mRatio = ratio; }

  signals:

    void extentChanged( const QgsRectangle &r );

  private slots:

    void groupBoxClicked();
    void layerMenuAboutToShow();

    void extentDrawn( const QgsRectangle &extent );

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

    QString mTitleBase;

    ExtentState mExtentState = OriginalExtent;

    QgsCoordinateReferenceSystem mOutputCrs;

    QgsRectangle mCurrentExtent;
    QgsCoordinateReferenceSystem mCurrentCrs;

    QgsRectangle mOriginalExtent;
    QgsCoordinateReferenceSystem mOriginalCrs;

    QMenu *mLayerMenu = nullptr;
    QgsMapLayerModel *mMapLayerModel = nullptr;
    QList< QAction * > mMenuActions;
    QPointer< const QgsMapLayer > mExtentLayer;
    QString mExtentLayerName;

    std::unique_ptr< QgsMapToolExtent > mMapToolExtent;
    QPointer< QgsMapTool > mMapToolPrevious = nullptr;
    QgsMapCanvas *mCanvas = nullptr;
    QSize mRatio;

    void setExtentToLayerExtent( const QString &layerId );

};

#endif // QGSEXTENTGROUPBOX_H