casa6

//# PlotEvent.h: Classes for interaction events.

//# Copyright (C) 2008

//# Associated Universities, Inc. Washington DC, USA.

//#

//# This library is free software; you can redistribute it and/or modify it

//# under the terms of the GNU Library General Public License as published by

//# the Free Software Foundation; either version 2 of the License, or (at your

//# option) any later version.

//#

//# This library is distributed in the hope that it will be useful, but WITHOUT

//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public

//# License for more details.

//#

//# You should have received a copy of the GNU Library General Public License

//# along with this library; if not, write to the Free Software Foundation,

//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.

//#

//# Correspondence concerning AIPS++ should be addressed as follows:

//#        Internet email: aips2-request@nrao.edu.

//#        Postal address: AIPS++ Project Office

//#                        National Radio Astronomy Observatory

//#                        520 Edgemont Road

//#                        Charlottesville, VA 22903-2475 USA

//#

//# $Id: $

#ifndef PLOTEVENT_H_

#define PLOTEVENT_H_

​

#include <graphics/GenericPlotter/PlotOptions.h>

​

namespace casa {

​

//# Forward Declarations

class Plotter;

class PlotCanvas;

class PlotButton;

class PlotCheckbox;

​

// Base class for an event.

class PlotEvent {

public:

    PlotEvent() { }

    virtual ~PlotEvent() { }

    // Return the origin of the object that spawned this event.

    virtual void* origin() const = 0;

};

​

​

// Event for when the user selects a region on a plot canvas with the mouse.

class PlotSelectEvent : public virtual PlotEvent {

public:

    // Constructor that takes the originating canvas and the selected region.

    PlotSelectEvent(PlotCanvas* canvas, const PlotRegion& region);

    // Destructor.

    ~PlotSelectEvent();

    // Overrides PlotEvent::origin().

    void* origin() const { return canvas(); }