legend.hpp
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00001 00005 /* Copyright (c) 2005-2011 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 "label.hpp" 00051 #include "colormap.hpp" 00052 00053 00058 enum legend_position_e { 00059 LEGEND_POS_BOTTOM_LEFT = 0, 00060 LEGEND_POS_BOTTOM_CENTER = 1, 00061 LEGEND_POS_BOTTOM_RIGHT = 2, 00062 00063 LEGEND_POS_MIDDLE_LEFT = 4+0, 00064 LEGEND_POS_MIDDLE_CENTER = 4+1, 00065 LEGEND_POS_MIDDLE_RIGHT = 4+2, 00066 00067 LEGEND_POS_TOP_LEFT = 8+0, 00068 LEGEND_POS_TOP_CENTER = 8+1, 00069 LEGEND_POS_TOP_RIGHT = 8+2 00070 }; 00071 00072 00073 #define LEGEND_POS_VERTICAL_MASK 12 00074 #define LEGEND_POS_HORIZONTAL_MASK 3 00075 00076 #define LEGEND_POS_BOTTOM 0 00077 #define LEGEND_POS_MIDDLE 4 00078 #define LEGEND_POS_TOP 8 00079 00080 #define LEGEND_POS_LEFT 0 00081 #define LEGEND_POS_CENTER 1 00082 #define LEGEND_POS_RIGHT 2 00083 00084 00093 class LegendEntry { 00094 00095 Graph &_graph; 00096 Label _label; 00098 public: 00099 00102 LegendEntry( Graph &graph, const std::string &label ) 00103 : _graph(graph), _label(label) {} 00104 00107 LegendEntry( const LegendEntry &le ) 00108 : _graph(le._graph), _label(le._label) {} 00109 00112 ~LegendEntry() {} 00113 00116 LegendEntry &operator=( const LegendEntry &le ) { 00117 _graph = le._graph; 00118 _label = le._label; 00119 return( *this ); 00120 } 00121 00126 void plot( cairo_t *cairo, double x, double y ); 00127 00130 void get_size( cairo_t *cairo, double &width, double &height ) const; 00131 00134 void set_font_size( double fontsize ); 00135 }; 00136 00137 00149 class Legend { 00150 00151 public: 00152 00155 Legend() {} 00156 00159 virtual ~Legend() {} 00160 00165 virtual void plot( cairo_t *cairo, double x, double y ) = 0; 00166 00169 virtual void get_size( cairo_t *cairo, double &width, double &height ) const = 0; 00170 }; 00171 00172 00175 class MultiEntryLegend { 00176 00177 double _fontsize; 00178 std::vector<LegendEntry *> _entry; 00180 public: 00181 00184 MultiEntryLegend(); 00185 00188 virtual ~MultiEntryLegend() {} 00189 00194 virtual void plot( cairo_t *cairo, double x, double y ); 00195 00198 virtual void get_size( cairo_t *cairo, double &width, double &height ) const; 00199 00202 void set_font_size( double fontsize ); 00203 00206 void add_entry( LegendEntry *entry ); 00207 00210 void clear_entries( void ); 00211 }; 00212 00213 00216 class ColormapLegend { 00217 00218 double _height; 00219 Colormap &_colormap; 00220 00221 00222 public: 00223 00226 ColormapLegend( Colormap &colormap ) : _height(0.0), _colormap(colormap) {} 00227 00230 virtual ~ColormapLegend() {} 00231 00236 virtual void plot( cairo_t *cairo, double x, double y ); 00237 00240 virtual void get_size( cairo_t *cairo, double &width, double &height ) const; 00241 00244 void set_height( double height ); 00245 }; 00246 00247 00248 #endif 00249