Polyline.qo.h

Go to the documentation of this file.

//# 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_POLYLINE_H_
#define REGION_POLYLINE_H_

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

namespace casa {

class AnnotationBase;
class DisplayData;
class SlicePlot;

namespace viewer {

class Polyline : public Region {
        Q_OBJECT
public:
        typedef std::pair<double,double> pt;
        typedef std::vector<pt> point_list;

        //Construction
        Polyline( WorldCanvas *wc, QtRegionDock *d, double x1, double y1 );
        Polyline( WorldCanvas *wc, QtRegionDock *d, const std::vector<std::pair<double,double> > &pts );
        // carry over from QtRegion... hopefully, removed soon...
        Polyline( QtRegionSourceKernel *, WorldCanvas *wc, const std::vector<std::pair<double,double> > &pts, bool hold_signals=false );
        Polyline( QtRegionSourceKernel *rs, WorldCanvas *wc, double x1, double y1, bool hold_signals=false );

        virtual ~Polyline( );

        bool clickWithin( double x, double y ) const;
        int clickHandle( double x, double y ) const;

        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 );

        // 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 );

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


        void polylineComplete( );

        void addVertex( double x, double y, bool rewrite_last_point=false );

        AnnotationBase *annotation( ) const;

        // return the *drawing* bounding rectangle...
        // in "linear" coordinates...
        void boundingRectangle( double &blcx, double &blcy, double &trcx, double &trcy ) const;

        int numVertices( ) const { return drawing_points( ).size( ); }

        void output( ds9writer &out ) const;

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

        void addPlot( QWidget* parent, string label );



signals:
        void show1DSliceTool();

public slots:
        //Position marker
        void setMarkerPosition( int regionId, int segmentIndex, float percentage );
        void setShowMarkerPosition( int regionId, bool show );

protected:
        virtual RegionInfo *newInfoObject( ImageInterface<Float> *image, PrincipalAxesDD * );
        unsigned int check_handle( double x, double y ) const;

        enum YScaleTo { ScaleTop, ScaleBottom };
        enum XScaleTo { ScaleLeft, ScaleRight };
        enum Tranformations { FLIP_X = 1 << 0, FLIP_Y = 1 << 1 };
        std::list<std::tr1::shared_ptr<RegionInfo> > *generate_dds_centers( );
        ImageRegion *get_image_region( DisplayData* ) const;

        void drawRegion( bool );
        void drawText( );

        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;

        const point_list &drawing_points( ) const { return _drawing_points_; }

private slots:
        void updatePolyLine(int regionId, viewer::region::RegionChanges,
                const QList<double> & worldX, const QList<double>& worldY,
                const QList<int> & pixelX, const QList<int> & pixelY);
        void polyLineRegionChanged( viewer::Region* region, std::string changeType);
        void polyLineRegionUpdate(int regionId, viewer::region::RegionChanges change,
                        const QList<double> & worldX, const QList<double>& worldY,
                        const QList<int> & pixelX, const QList<int> & pixelY);



private:
        bool within_vertex_handle( double x, double y ) const;
        int move_sizing_rectangle_handle( int handle, double x, double y );
        int move_vertex( int handle, double x, double y );

        void update_drawing_bounds_rectangle( );
        void update_reference_bounds_rectangle( );

        void update_drawing_state( );
        void update_reference_state( int transformations, int handle, int new_handle );

        virtual void setCenter(double &x, double &y, double &deltx, double &delty);
        void initPlot( );
        void setPlotLineColor();
        void setPlotLineColor( SlicePlot* plot );

        double handle_delta_x, handle_delta_y;

        point_list _ref_points_;
        double _ref_blc_x_, _ref_blc_y_;
        double _ref_trc_x_, _ref_trc_y_;
        double _ref_width_, _ref_height_;

        point_list _drawing_points_;
        double _drawing_blc_x_, _drawing_blc_y_;
        double _drawing_trc_x_, _drawing_trc_y_;
        double _drawing_width_, _drawing_height_;

        double _center_x, _center_y;
        double _center_delta_x, _center_delta_y;

        XScaleTo _x_origin_;
        YScaleTo _y_origin_;

        //Slice functionality
        void drawPositionMarker();
        QMap<QString,SlicePlot*> slicePlots;
        int markerSegmentIndex;
        float markerPercentage;
        bool showPositionMarker;
};
}
}

#endif