casa6

//# PlotCanvas.h: Main drawing area for different plot items to be attached.

//# 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 PLOTCANVAS_H_

#define PLOTCANVAS_H_

​

#include <graphics/GenericPlotter/Plot.h>

#include <graphics/GenericPlotter/PlotAnnotation.h>

#include <graphics/GenericPlotter/PlotEventHandler.h>

#include <graphics/GenericPlotter/PlotItem.h>

#include <graphics/GenericPlotter/PlotLogger.h>

#include <graphics/GenericPlotter/PlotOperation.h>

#include <graphics/GenericPlotter/PlotOptions.h>

#include <graphics/GenericPlotter/PlotShape.h>

#include <graphics/GenericPlotter/PlotTool.h>

​

#include <casacore/casa/BasicSL/String.h>

​

namespace casa {

​

//# Forward Declarations

class PlotFactory;

​

​

// Abstract parent for any class that wants to be notified when the canvas

// is about to start drawing.  This class is needed because a canvas could

// start redrawing for a number of reasons (user-requested, items changing the

// scale, resizing, ...) and instead of forcing applications to catch all cases

// this class can be used to notify when a drawing has begun for any reason.

class PlotDrawWatcher {

public:

    // Constructor.

    PlotDrawWatcher() { }

    // Destructor.

    virtual ~PlotDrawWatcher() { }

    // This method should be called by the canvas whenever drawing is about to

    // begin.  The watcher is given: