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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