qgsplottoolzoom.h

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/***************************************************************************
                          qgsplottoolzoom.h
                          ---------------
    begin                : March 2022
    copyright            : (C) 2022 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 QGSPLOTTOOLZOOM_H
#define QGSPLOTTOOLZOOM_H
 
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgsplottool.h"
 
class QgsPlotRectangularRubberBand;
 

class GUI_EXPORT QgsPlotToolZoom : public QgsPlotTool
{
    Q_OBJECT
 
  public:
    QgsPlotToolZoom( QgsPlotCanvas *canvas SIP_TRANSFERTHIS );
    ~QgsPlotToolZoom() override;
 
    void plotPressEvent( QgsPlotMouseEvent *event ) override;
    void plotMoveEvent( QgsPlotMouseEvent *event ) override;
    void plotReleaseEvent( QgsPlotMouseEvent *event ) override;
    void keyPressEvent( QKeyEvent *event ) override;
    void keyReleaseEvent( QKeyEvent *event ) override;
    void deactivate() override;
 
  protected:
    virtual QPointF constrainStartPoint( QPointF scenePoint ) const SIP_SKIP;

    virtual QPointF constrainMovePoint( QPointF scenePoint ) const SIP_SKIP;

    virtual QRectF constrainBounds( const QRectF &sceneBounds ) const SIP_SKIP;

    virtual void zoomOutClickOn( QPointF scenePoint ) SIP_SKIP;

    virtual void zoomInClickOn( QPointF scenePoint ) SIP_SKIP;

    bool mMarqueeZoom = false;
 
  protected:
    QPoint mMousePressStartPos;

    QPointF mRubberBandStartPos;
 
  private:
    std::unique_ptr<QgsPlotRectangularRubberBand> mRubberBand;
 
    void startMarqueeZoom( QPointF scenePoint );
};
 
#endif // QGSPLOTTOOLZOOM_H