RegionToolManager.qo.h

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//# RegionToolManager.qo.h: class designed to unify the behavior of all of the mouse tools
//# Copyright (C) 2011
//# 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 DISPLAY_TOOLMANAGER_H__
#define DISPLAY_TOOLMANAGER_H__

#include <QObject>
#include <display/Display/PanelDisplay.h>
#include <display/region/QtRegionSourceFactory.h>

#include <display/DisplayEvents/WCPositionEH.h>
#include <display/DisplayEvents/WCMotionEH.h>
#include <display/DisplayEvents/WCRefreshEH.h>
#include <display/QtViewer/QtDisplayPanelGui.qo.h>
#include <display/QtPlotter/QtMWCTools.qo.h>

namespace casa {

    /* class QtMWCTool; */
    class QtMouseTool;
    class QtRectTool;

    namespace viewer {

                // the RegionCreator class now has static members which allow for the
                // retrieval of lists of RegionCreator objects for creating each type
                // of region (currently rectangle, polygon, ellipse, and point).
                class RegionToolManager : public QObject, public WCPositionEH, public WCMotionEH, public WCRefreshEH {
                        Q_OBJECT
                public:

                                enum ToolTypes { RectTool, PointTool, EllipseTool, PolyTool, PolylineTool, PVTool };


                                RegionToolManager( QtRegionSourceFactory *rsf, QtDisplayPanelGui *dpg, PanelDisplay *pd );
                                ~RegionToolManager( );

                                // Required operators for event handling - these are called when
                                // events occur, and distribute the events to the "user-level"
                                // methods
                                // <group>
                                void operator()(const WCPositionEvent& ev);
                                void operator()(const WCMotionEvent& ev);
                                void operator()(const WCRefreshEvent& ev);
                                // </group>

                                void loadRegions( const std::string &path, const std::string &type );

                                // fetch tool for a particular region type...
                                std::tr1::shared_ptr<RegionTool> tool( region::RegionTypes );

                private:

                                region::RegionSelect tool_to_select(RegionTool::RegionToolTypes type ) const
                                                { return type == RegionTool::POLYTOOL ? region::SelectPoly :
                                                                        type == RegionTool::RECTTOOL ? region::SelectRect :
                                                                        type == RegionTool::POINTTOOL ? region::SelectPoint :
                                                                        type == RegionTool::ELLIPSETOOL ? region::SelectEllipse :
                                                                        type == RegionTool::POLYLINETOOL ? region::SelectPolyline : region::SelectAny; }

                                typedef std::pair<double,double> linear_point_type;
                                PanelDisplay *pd;
                                typedef std::map<ToolTypes,std::tr1::shared_ptr<RegionTool> > tool_map;
                                tool_map tools;

                                // members for keeping track of marked (sticky-selected) regions...
                                /* region_list_type marked_regions; */

                                // members for state when moving selected region...
                                bool inDrawArea( WorldCanvas *wc, const linear_point_type &new_blc, const linear_point_type &new_trc ) const;
                                region::region_list_type moving_regions;
                                linear_point_type moving_ref_point;
                                linear_point_type moving_blc;
                                linear_point_type moving_trc;

                                // members for state when moving a region handle...
                                bool moving_handle;
                                viewer::region::PointInfo moving_handle_info;
                                viewer::Region *moving_handle_region;

                                // returns new region marked state...
                                bool add_mark_select( RegionTool::State &state, region::RegionSelect );
                                void clear_mark_select( RegionTool::State &state, region::RegionSelect );
                                bool setup_moving_regions( RegionTool::State &state, region::RegionSelect );
                                void setup_moving_regions_state( double linx, double liny, const region::region_list_type & );
                                void translate_moving_regions( WorldCanvas *wc, double dx, double dy );
                                bool process_double_click( RegionTool::State &state, region::RegionSelect );

                                // region source factory is needed to retrieve the region dock
                                // which can provide a list of selected regions...
                                QtRegionSourceFactory *factory;

                };
    }
}


#endif