IBSimu  1.0.4
fonts.hpp
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00001 
00005 /* Copyright (c) 2005-2009 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 FONTS_HPP
00044 #define FONTS_HPP 1
00045 
00046 
00047 #include <string>
00048 #include <vector>
00049 #include <cairo.h>
00050 #include <fontconfig/fontconfig.h>
00051 #include <ft2build.h>
00052 #include FT_FREETYPE_H
00053 
00054 
00055 
00058 class Font
00059 {
00060     cairo_font_face_t   *_cff;
00061     FcPattern           *_pmatch;
00062 
00063     std::string          _family;
00064     cairo_font_slant_t   _slant;   
00068     cairo_font_weight_t  _weight;  
00073 public:
00074 
00075     Font( FcPattern *pat );
00076     Font( const std::string &family );
00077     Font( const std::string &family, cairo_font_slant_t slant, 
00078           cairo_font_weight_t weight );
00079     Font( const Font &font );
00080 
00081     Font &operator=( const Font &font );
00082 
00083     ~Font();
00084 
00085     std::string family( void ) const;
00086     cairo_font_slant_t slant( void ) const;
00087     cairo_font_weight_t weight( void ) const;
00088     cairo_font_face_t *font_face( void ) const;
00089     FcPattern *fcpattern( void ) const;
00090 
00091     void load( class FontLib &fontlib );
00092 
00093 };
00094 
00095 
00098 class FontLib
00099 {
00100 
00101     FT_Library         _ft;
00102     FcConfig          *_fc;
00103 
00104     std::vector<Font>  _search;
00105     std::vector<Font>  _loaded;
00106 
00107     int get_font_matrix( cairo_t *cairo, cairo_matrix_t *matrix, cairo_matrix_t *orig_matrix );
00108     int process_substr( cairo_t *cairo, const std::string &str, cairo_text_extents_t *extents, 
00109                         double x0, double y0, double &x, double &y );
00110     void process( cairo_t *cairo, const std::string &str, cairo_text_extents_t *extents, double &x, double &y );
00111 
00112 public:
00113 
00114     FontLib();
00115 
00116     ~FontLib();
00117 
00122     struct Symbolname {
00123         const char *name;
00124         const char *ucode;
00125     };
00126     
00133     static void combine_extents( cairo_text_extents_t *extents1, double x1, double y1,
00134                                  const cairo_text_extents_t *extents2, double x2, double y2 );
00135 
00138     static const Symbolname symbols[];
00139 
00140 
00141     FcConfig *fc( void ) { return( _fc ); }
00142 
00143 
00144     void push_auto_search_font( const std::string &family );
00145     int pop_auto_search_font( void );
00146 
00147 
00148     
00149     std::string family( void ) const;
00150     cairo_font_slant_t slant( void ) const;
00151     cairo_font_weight_t weight( void ) const;
00152     cairo_font_face_t *font_face( void ) const;
00153     FcPattern *fcpattern( void ) const;
00154 
00155 
00156     void push_font( FcPattern *pat );
00157     void push_font( const std::string &family, cairo_font_slant_t slant, 
00158                     cairo_font_weight_t weight );
00159     int pop_font( void );
00160 
00161 
00162     void text_extents( cairo_t *cairo, const std::string &str, cairo_text_extents_t *extents );
00163 
00168     void draw_text( cairo_t *cairo, const std::string &str, double &x, double &y );
00169 
00170 };
00171 
00172 
00173 extern FontLib fontlib;
00174 
00175 
00176 #endif
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