src/fontmanager.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * fontmanager.h:
   4  *
   5  * Contact:
   6  *   Moonlight List (moonlight-list@lists.ximian.com)
   7  *
   8  * Copyright 2009 Novell, Inc. (http://www.novell.com)
   9  *
  10  * See the LICENSE file included with the distribution for details.
  11  */
  12
  13 #ifndef __FONT_MANAGER_H__
  14 #define __FONT_MANAGER_H__
  15
  16 #include <glib.h>
  17 #include <ft2build.h>
  18 #include FT_FREETYPE_H
  19
  20 #include "moon-path.h"
  21 #include "enums.h"
  22
  23 struct ManagedStreamCallbacks;
  24 class FontManager;
  25 class FontFace;
  26
  27 bool FontWeightIsBold (FontWeights weight);
  28
  29 struct GlyphMetrics {
  30         double horiBearingX;
  31         //double horiBearingY;
  32         double horiAdvance;
  33         //double height;
  34         //double width;
  35 };
  36
  37 struct GlyphInfo {
  38         GlyphMetrics metrics;
  39         gunichar unichar;
  40         guint32 index;
  41         moon_path *path;
  42         FontFace *face;
  43         gint64 atime;
  44 };
  45
  46 struct FontFaceExtents {
  47         double underline_thickness;
  48         double underline_position;
  49         double descent;
  50         double ascent;
  51         double height;
  52 };
  53
  54
  55 class FontFace {
  56         FontManager *manager;
  57         double cur_size;
  58         int ref_count;
  59         FT_Face face;
  60         char *key;
  61
  62  public:
  63         FontFace (FontManager *manager, FT_Face face, char *key);
  64         ~FontFace ();
  65
  66         void ref ();
  67         void unref ();
  68
  69         const char *GetFamilyName ();
  70         const char *GetStyleName ();
  71
  72         bool IsScalable ();
  73         bool IsItalic ();
  74         bool IsBold ();
  75
  76         gunichar GetCharFromIndex (guint32 index);
  77         guint32 GetCharIndex (gunichar unichar);
  78         bool HasChar (gunichar unichar);
  79
  80         void GetExtents (double size, FontFaceExtents *extents);
  81         double Kerning (double size, guint32 left, guint32 right);
  82         bool LoadGlyph (double size, GlyphInfo *glyph, StyleSimulations simulate = StyleSimulationsNone);
  83 };
  84
  85 class FontManager {
  86         friend class FontFace;
  87
  88         GHashTable *resources;
  89         GHashTable *faces;
  90         FT_Library libft2;
  91         char *root;
  92         double dpi;
  93
  94         FontFace *OpenFontResource (const char *resource, const char *family, int index, FontStretches stretch, FontWeights weight, FontStyles style);
  95         FontFace *OpenSystemFont (const char *family, FontStretches stretch, FontWeights weight, FontStyles style);
  96         FontFace *OpenFontFace (const char *filename, const char *guid, int index);
  97
  98  public:
  99         FontManager ();
 100         ~FontManager ();
 101
 102         void AddResource (const char *resource, ManagedStreamCallbacks *stream);
 103         void AddResource (const char *resource, const char *path);
 104
 105         FontFace *OpenFont (const char *name, FontStretches stretch, FontWeights weight, FontStyles style);
 106         FontFace *OpenFont (const char *name, int index);
 107 };
 108
 109 #endif /* __FONT_MANAGER_H__ */