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glyph.h

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00001 /*  Inti: Integrated Foundation Classes
00002  *  Copyright (C) 2002-2003 The Inti Development Team.
00003  *
00004  *  This program is free software; you can redistribute it and/or modify
00005  *  it under the terms of the GNU General Public License as published by
00006  *  the Free Software Foundation; either version 2 of the License, or
00007  *  (at your option) any later version.
00008  *
00009  *  This program is distributed in the hope that it will be useful,
00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *  GNU Library General Public License for more details.
00013  *
00014  *  You should have received a copy of the GNU Library General Public License
00015  *  along with this program; if not, write to the Free Software
00016  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017  */
00018  
00023 
00024 #ifndef INTI_PANGO_GLYPH_H
00025 #define INTI_PANGO_GLYPH_H
00026 
00027 #ifndef INTI_G_BOXED_H
00028 #include <inti/glib/boxed.h>
00029 #endif
00030 
00031 #ifndef INTI_PANGO_TYPES_H
00032 #include <inti/pango/types.h>
00033 #endif
00034 
00035 #ifndef __PANGO_GLYPH_H__
00036 #include <pango/pango-glyph.h>
00037 #endif
00038 
00039 #ifndef _CPP_VECTOR
00040 #include <vector>
00041 #endif
00042 
00043 namespace Inti {
00044 
00045 namespace Pango {
00046         
00047 class Analysis;
00048 class Font;
00049 class Rectangle;
00050 
00057 
00058 typedef PangoGlyphUnit GlyphUnit;
00059 
00065 
00066 class GlyphGeometry
00067 {
00068         PangoGlyphGeometry geometry_;
00069 
00070 public:
00071         PangoGlyphGeometry* pango_glyph_geometry() const { return const_cast<PangoGlyphGeometry*>(&geometry_); }
00073 
00074         GlyphUnit width() const;
00076 
00077         GlyphUnit x_offset() const;
00079 
00080         GlyphUnit y_offset() const;
00082 };
00083 
00089 
00090 class GlyphVisAttr
00091 {
00092         PangoGlyphVisAttr attr_;
00093 
00094 public:
00095         PangoGlyphVisAttr* pango_glyph_vis_attr() const { return const_cast<PangoGlyphVisAttr*>(&attr_); }
00097 
00098         bool is_cluster_start() const;
00103 };
00104 
00109 
00110 class GlyphInfo
00111 {
00112         PangoGlyphInfo info_;
00113 
00114 public:
00115         PangoGlyphInfo* pango_glyph_info() const { return const_cast<PangoGlyphInfo*>(&info_); }
00117 
00118         Glyph glpyh() const;
00120 
00121         const GlyphGeometry& geometry() const;
00123 
00124         const GlyphVisAttr& attr() const;
00127 };
00128 
00134 
00135 class GlyphString : public G::Boxed
00136 {
00137 public:
00140 
00141         GlyphString();
00143 
00144         GlyphString(const String& text, const Analysis& analysis);
00152 
00153         explicit GlyphString(PangoGlyphString *string);
00161 
00162         GlyphString(PangoGlyphString *string, bool copy);
00174 
00175         GlyphString(const GlyphString& src);
00178 
00179         virtual ~GlyphString();
00181 
00182         GlyphString& operator=(const GlyphString& src);
00185 
00189 
00190         PangoGlyphString* pango_glyph_string() const { return (PangoGlyphString*)boxed_; }
00192 
00193         operator PangoGlyphString* () const;
00195 
00196         int size() const;
00198         
00199         std::vector<GlyphInfo> glyphs() const;
00201 
00202         int* log_clusters() const;
00205 
00206         void extents(const Font& font, Rectangle *ink_rect, Rectangle *logical_rect, int start = 0, int end = -1) const;
00223 
00224         void get_logical_widths(const String& text, int embedding_level, std::vector<int>& logical_widths) const;
00233 
00237 
00238         void set_size(int length);
00241 
00242         int index_to_x(const String& text, const Analysis& analysis, int index, bool trailing);
00252 
00253         void x_to_index(const String& text, const Analysis& analysis, int x_pos, int *index, bool *trailing);
00266 
00268 };
00269 
00270 } // namespace Pango
00271 
00272 } // namespace Inti
00273 
00274 #endif // INTI_PANGO_GLYPH_H
00275 
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