dlls/winedib.drv/freetype.c

   1 /*
   2  * Truetype font functions
   3  *
   4  * Copyright 2008 Massimo Del Fedele
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "config.h"
  21 #include "wine/port.h"
  22
  23 #include "dibdrv.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(dibdrv);
  26
  27 #define MAKE_FUNCPTR(f) typeof(f) * p##f = NULL;
  28 MAKE_FUNCPTR(FT_Done_Face)
  29 MAKE_FUNCPTR(FT_Done_FreeType)
  30 MAKE_FUNCPTR(FT_Get_Char_Index)
  31 MAKE_FUNCPTR(FT_Get_Glyph_Name)
  32 MAKE_FUNCPTR(FT_Get_Sfnt_Name)
  33 MAKE_FUNCPTR(FT_Get_Sfnt_Name_Count)
  34 MAKE_FUNCPTR(FT_Get_Sfnt_Table)
  35 MAKE_FUNCPTR(FT_Init_FreeType)
  36 MAKE_FUNCPTR(FT_Load_Glyph)
  37 MAKE_FUNCPTR(FT_Load_Char)
  38 MAKE_FUNCPTR(FT_Get_Glyph)
  39 MAKE_FUNCPTR(FT_Glyph_Copy)
  40 MAKE_FUNCPTR(FT_Glyph_To_Bitmap)
  41 MAKE_FUNCPTR(FT_Done_Glyph)
  42 MAKE_FUNCPTR(FT_New_Face)
  43 MAKE_FUNCPTR(FT_Set_Charmap)
  44 MAKE_FUNCPTR(FT_Set_Char_Size)
  45 MAKE_FUNCPTR(FT_Set_Pixel_Sizes)
  46 MAKE_FUNCPTR(FT_Get_First_Char)
  47 MAKE_FUNCPTR(FT_Render_Glyph)
  48 MAKE_FUNCPTR(FT_Glyph_Transform)
  49 MAKE_FUNCPTR(FT_Bitmap_New)
  50 MAKE_FUNCPTR(FT_Bitmap_Done)
  51 MAKE_FUNCPTR(FT_Bitmap_Convert)
  52 #undef MAKE_FUNCPTR
  53
  54 /* freetype initialization flag */
  55 static BOOL FreeType_Initialized = FALSE;
  56
  57 /* freetype dll handle */
  58 static void *ft_handle = NULL;
  59
  60 /* freetype library handle */
  61 FT_Library DIBDRV_ftLibrary = NULL;
  62
  63 /* initialize freetype library */
  64 BOOL _DIBDRV_FreeType_Init(void)
  65 {
  66     FT_Int error;
  67
  68     ft_handle = wine_dlopen(SONAME_LIBFREETYPE, RTLD_NOW, NULL, 0);
  69     if(!ft_handle)
  70     {
  71         WINE_MESSAGE(
  72             "Wine cannot find the FreeType font library.  To enable Wine to\n"
  73             "use TrueType fonts please install a version of FreeType greater than\n"
  74             "or equal to 2.0.5.\n"
  75             "http://www.freetype.org\n");
  76         return FALSE;
  77     }
  78
  79 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(ft_handle, #f, NULL, 0)) == NULL) goto sym_not_found;
  80     LOAD_FUNCPTR(FT_Done_Face)
  81     LOAD_FUNCPTR(FT_Done_FreeType)
  82     LOAD_FUNCPTR(FT_Get_Char_Index)
  83     LOAD_FUNCPTR(FT_Get_Glyph_Name)
  84     LOAD_FUNCPTR(FT_Get_Sfnt_Name)
  85     LOAD_FUNCPTR(FT_Get_Sfnt_Name_Count)
  86     LOAD_FUNCPTR(FT_Get_Sfnt_Table)
  87     LOAD_FUNCPTR(FT_Init_FreeType)
  88     LOAD_FUNCPTR(FT_Load_Glyph)
  89     LOAD_FUNCPTR(FT_Load_Char)
  90     LOAD_FUNCPTR(FT_Get_Glyph)
  91     LOAD_FUNCPTR(FT_Glyph_Copy)
  92     LOAD_FUNCPTR(FT_Glyph_To_Bitmap)
  93     LOAD_FUNCPTR(FT_Done_Glyph)
  94     LOAD_FUNCPTR(FT_New_Face)
  95     LOAD_FUNCPTR(FT_Set_Charmap)
  96     LOAD_FUNCPTR(FT_Set_Char_Size)
  97     LOAD_FUNCPTR(FT_Set_Pixel_Sizes)
  98     LOAD_FUNCPTR(FT_Get_First_Char)
  99     LOAD_FUNCPTR(FT_Render_Glyph)
 100     LOAD_FUNCPTR(FT_Glyph_Transform)
 101     LOAD_FUNCPTR(FT_Bitmap_New)
 102     LOAD_FUNCPTR(FT_Bitmap_Done)
 103     LOAD_FUNCPTR(FT_Bitmap_Convert)
 104 #undef LOAD_FUNCPTR
 105
 106     error = pFT_Init_FreeType(&DIBDRV_ftLibrary);
 107     if (error != FT_Err_Ok)
 108     {
 109         ERR("%s returned %i\n", "FT_Init_FreeType", error);
 110         wine_dlclose(ft_handle, NULL, 0);
 111         return FALSE;
 112     }
 113
 114     /* marks library as initialized */
 115     FreeType_Initialized = TRUE;
 116
 117     return TRUE;
 118
 119 sym_not_found:
 120     WINE_MESSAGE(
 121       "Wine cannot find certain functions that it needs inside the FreeType\n"
 122       "font library.  To enable Wine to use TrueType fonts please upgrade\n"
 123       "FreeType to at least version 2.0.5.\n"
 124       "http://www.freetype.org\n");
 125     wine_dlclose(ft_handle, NULL, 0);
 126     ft_handle = NULL;
 127     return FALSE;
 128 }
 129
 130 /* terminates freetype library */
 131 void _DIBDRV_FreeType_Terminate(void)
 132 {
 133     if(!FreeType_Initialized)
 134         return;
 135
 136     /* terminates and unload freetype library */
 137     pFT_Done_FreeType(DIBDRV_ftLibrary);
 138     wine_dlclose(ft_handle, NULL, 0);
 139     ft_handle = NULL;
 140     FreeType_Initialized = FALSE;
 141
 142 }