legend.hpp

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00001 
00005 /* Copyright (c) 2005-2010 Taneli Kalvas. All rights reserved.
00006  *
00007  * You can redistribute this software and/or modify it under the terms
00008  * of the GNU General Public License as published by the Free Software
00009  * Foundation; either version 2 of the License, or (at your option)
00010  * any later version.
00011  * 
00012  * This library is distributed in the hope that it will be useful, but
00013  * WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00015  * General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with this library (file "COPYING" included in the package);
00019  * if not, write to the Free Software Foundation, Inc., 51 Franklin
00020  * Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  * 
00022  * If you have questions about your rights to use or distribute this
00023  * software, please contact Berkeley Lab's Technology Transfer
00024  * Department at TTD@lbl.gov. Other questions, comments and bug
00025  * reports should be sent directly to the author via email at
00026  * taneli.kalvas@jyu.fi.
00027  * 
00028  * NOTICE. This software was developed under partial funding from the
00029  * U.S.  Department of Energy.  As such, the U.S. Government has been
00030  * granted for itself and others acting on its behalf a paid-up,
00031  * nonexclusive, irrevocable, worldwide license in the Software to
00032  * reproduce, prepare derivative works, and perform publicly and
00033  * display publicly.  Beginning five (5) years after the date
00034  * permission to assert copyright is obtained from the U.S. Department
00035  * of Energy, and subject to any subsequent five (5) year renewals,
00036  * the U.S. Government is granted for itself and others acting on its
00037  * behalf a paid-up, nonexclusive, irrevocable, worldwide license in
00038  * the Software to reproduce, prepare derivative works, distribute
00039  * copies to the public, perform publicly and display publicly, and to
00040  * permit others to do so.
00041  */
00042 
00043 #ifndef LEGEND_HPP
00044 #define LEGEND_HPP 1
00045 
00046 
00047 #include <vector>
00048 #include <string>
00049 #include "graph.hpp"
00050 #include "colormap.hpp"
00051 
00052 
00059 class LegendEntry {
00060     
00061     Graph     &_drawable;
00062     std::string   _label;
00063 
00064 public:
00065     
00068     LegendEntry( Graph &drawable, std::string &label ) 
00069         : _drawable(drawable), _label(label) {}
00070 
00073     LegendEntry( const LegendEntry &le ) 
00074         : _drawable(le._drawable), _label(le._label) {}
00075 
00078     ~LegendEntry() {}
00079 
00082     LegendEntry &operator=( const LegendEntry &le ) {
00083         _drawable = le._drawable;
00084         _label = le._label;
00085         return( *this );
00086     }
00087 
00090     void plot( cairo_t *cairo, double x, double y ) const;
00091 
00094     void get_size( double &width, double &height ) const;
00095 
00096 };
00097 
00098 
00108 class Legend {
00109 
00110 public:
00111 
00114     Legend() {}
00115 
00118     virtual ~Legend() {}    
00119 
00122     virtual void plot( cairo_t *cairo, double x, double y ) const = 0;
00123 
00126     virtual void get_size( double &width, double &height ) const = 0;
00127 };
00128 
00129 
00132 class MultiEntryLegend {
00133 
00134     std::vector<LegendEntry> _entry;    
00136 public:
00137 
00140     MultiEntryLegend() {}
00141     
00144     virtual ~MultiEntryLegend() {}    
00145 
00148     virtual void plot( cairo_t *cairo, double x, double y ) const;
00149 
00152     virtual void get_size( double &width, double &height ) const;
00153 
00156     void add_entry( const LegendEntry &entry );
00157 };
00158 
00159 
00162 class ColormapLegend {
00163 
00164     double      _height;
00165     Colormap   &_colormap;
00166 
00167 
00168 public:
00169 
00172     ColormapLegend( Colormap &colormap ) : _height(0.0), _colormap(colormap) {}
00173 
00176     virtual ~ColormapLegend() {}
00177 
00180     virtual void plot( cairo_t *cairo, double x, double y ) const;
00181 
00184     virtual void get_size( double &width, double &height ) const;
00185 
00188     void set_height( double height );
00189 };
00190 
00191 
00192 #endif
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