Rectangle.h

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//# rectangle.h: base class for statistical regions
//# 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 REGION_RECTANGLE_H_
#define REGION_RECTANGLE_H_

#include <display/region/Region.qo.h>
#include <display/region/QtRegionSource.qo.h>
#include <casa/BasicSL/String.h>
#include <list>

namespace casa {

        class PanelDisplay;
        class AnnotationBase;
        class MSAsRaster;
        class DisplayData;

        namespace viewer {

                // carry over from QtRegion... hopefully, removed soon...
                class QtRegionSourceKernel;

                // All regions are specified in "linear coordinates", not "pixel coordinates". This is necessary
                // because "linear coordinates" scale with zooming whereas "pixel coordinates" do not. Unfortunately,
                // this means that coordinate transformation is required each time the region is drawn.
                class Rectangle : public Region {
                        public:
                                ~Rectangle( );
                                Rectangle( WorldCanvas *wc, QtRegionDock *d, double x1, double y1, double x2, double y2, 
                                                   bool hold_signals=false );

                                // carry over from QtRegion... hopefully, removed soon...
                                Rectangle( QtRegionSourceKernel *rs, WorldCanvas *wc, double x1, double y1, double x2, double y2,
                                                   bool hold_signals=false);

                                bool clickWithin( double x, double y ) const
                                        { return x > blc_x && x < trc_x && y > blc_y && y < trc_y; }

                                int clickHandle( double x, double y ) const;

                                bool doubleClick( double /*x*/, double /*y*/ );

                                // returns point state (Region::PointLocation)
                                region::PointInfo checkPoint( double x, double y ) const;

                                // returns mouse state (Region::MouseState)
                                unsigned int mouseMovement( double x, double y, bool other_selected );

                                // for rectangles, resizing can change the handle...
                                // for rectangles, moving a handle is resizing...
                                int moveHandle( int handle, double x, double y );
                                void move( double dx, double dy );

                                void resize( double /*width_delta*/, double /*height_delta*/ );
                                bool valid_translation( double dx, double dy, double width_delta, double height_delta );

                                void linearCenter( double &x, double &y ) const;
                                void pixelCenter( double &x, double &y ) const;

                                AnnotationBase *annotation( ) const;

                                virtual bool flag( MSAsRaster *msar );

                                // in "linear" coordinates...
                                void boundingRectangle( double &blcx, double &blcy, double &trcx, double &trcy ) const;

                                void output( ds9writer &out ) const;

                                // fetch region type...
                                region::RegionTypes type( ) const { return region::RectRegion; }

                        protected:
                                Rectangle( const std::string &name, WorldCanvas *wc, QtRegionDock *d, double x1, 
                                                   double y1, double x2, double y2, bool hold_signals=false, 
                                                   QtMouseToolNames::PointRegionSymbols sym=QtMouseToolNames::SYM_UNKNOWN ) :
                                                                                                Region( name, wc, d, hold_signals, sym ), blc_x(x1<x2?x1:x2),
                                                                                                blc_y(y1<y2?y1:y2), trc_x(x1<x2?x2:x1), trc_y(y1<y2?y2:y1) { complete = true; }

                                RegionInfo::stats_t *get_ms_stats( MSAsRaster *msar, double x, double y );
                                void generate_nonimage_statistics( DisplayData*, std::list<RegionInfo> * );
                                std::list<std::tr1::shared_ptr<RegionInfo> > *generate_dds_centers( );
                                ImageRegion *get_image_region( DisplayData* ) const;

                                virtual void fetch_region_details( region::RegionTypes &type, std::vector<std::pair<int,int> > &pixel_pts, 
                                                                                                   std::vector<std::pair<double,double> > &world_pts ) const;

                                void drawRegion( bool );
                                /* void drawHandles( ); */

                                virtual void setCenter(double &x, double &y, double &deltx, double &delty) {center_x_=x; center_y_=y; center_delta_x_=deltx; center_delta_y_=delty;};

                                double blc_x, blc_y;
                                double trc_x, trc_y;
                                double center_x_, center_y_;
                                double center_delta_x_, center_delta_y_;
                                double handle_delta_x, handle_delta_y;

                        private:
                                bool within_vertex_handle( double x, double y ) const;
                                unsigned int check_handle( double x, double y ) const;

                };
    }
}

#endif