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 #undef MAKE_FUNCPTR
  50
  51 /* freetype initialization flag */
  52 static BOOL FreeType_Initialized = FALSE;
  53
  54 /* freetype dll handle */
  55 static void *ft_handle = NULL;
  56
  57 /* freetype library handle */
  58 FT_Library DIBDRV_ftLibrary = NULL;
  59
  60 /* initialize freetype library */
  61 BOOL _DIBDRV_FreeType_Init(void)
  62 {
  63     FT_Int error;
  64
  65     ft_handle = wine_dlopen(SONAME_LIBFREETYPE, RTLD_NOW, NULL, 0);
  66     if(!ft_handle)
  67     {
  68         WINE_MESSAGE(
  69             "Wine cannot find the FreeType font library.  To enable Wine to\n"
  70             "use TrueType fonts please install a version of FreeType greater than\n"
  71             "or equal to 2.0.5.\n"
  72             "http://www.freetype.org\n");
  73         return FALSE;
  74     }
  75
  76 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(ft_handle, #f, NULL, 0)) == NULL) goto sym_not_found;
  77     LOAD_FUNCPTR(FT_Done_Face)
  78     LOAD_FUNCPTR(FT_Done_FreeType)
  79     LOAD_FUNCPTR(FT_Get_Char_Index)
  80     LOAD_FUNCPTR(FT_Get_Glyph_Name)
  81     LOAD_FUNCPTR(FT_Get_Sfnt_Name)
  82     LOAD_FUNCPTR(FT_Get_Sfnt_Name_Count)
  83     LOAD_FUNCPTR(FT_Get_Sfnt_Table)
  84     LOAD_FUNCPTR(FT_Init_FreeType)
  85     LOAD_FUNCPTR(FT_Load_Glyph)
  86     LOAD_FUNCPTR(FT_Load_Char)
  87     LOAD_FUNCPTR(FT_Get_Glyph)
  88     LOAD_FUNCPTR(FT_Glyph_Copy)
  89     LOAD_FUNCPTR(FT_Glyph_To_Bitmap)
  90     LOAD_FUNCPTR(FT_Done_Glyph)
  91     LOAD_FUNCPTR(FT_New_Face)
  92     LOAD_FUNCPTR(FT_Set_Charmap)
  93     LOAD_FUNCPTR(FT_Set_Char_Size)
  94     LOAD_FUNCPTR(FT_Set_Pixel_Sizes)
  95     LOAD_FUNCPTR(FT_Get_First_Char)
  96     LOAD_FUNCPTR(FT_Render_Glyph)
  97     LOAD_FUNCPTR(FT_Glyph_Transform)
  98 #undef LOAD_FUNCPTR
  99
 100     error = pFT_Init_FreeType(&DIBDRV_ftLibrary);
 101     if (error != FT_Err_Ok)
 102     {
 103         ERR("%s returned %i\n", "FT_Init_FreeType", error);
 104         wine_dlclose(ft_handle, NULL, 0);
 105         return FALSE;
 106     }
 107
 108     /* marks library as initialized */
 109     FreeType_Initialized = TRUE;
 110
 111     return TRUE;
 112
 113 sym_not_found:
 114     WINE_MESSAGE(
 115       "Wine cannot find certain functions that it needs inside the FreeType\n"
 116       "font library.  To enable Wine to use TrueType fonts please upgrade\n"
 117       "FreeType to at least version 2.0.5.\n"
 118       "http://www.freetype.org\n");
 119     wine_dlclose(ft_handle, NULL, 0);
 120     ft_handle = NULL;
 121     return FALSE;
 122 }
 123
 124 /* terminates freetype library */
 125 void _DIBDRV_FreeType_Terminate(void)
 126 {
 127     if(!FreeType_Initialized)
 128         return;
 129
 130     /* terminates and unload freetype library */
 131     pFT_Done_FreeType(DIBDRV_ftLibrary);
 132     wine_dlclose(ft_handle, NULL, 0);
 133     ft_handle = NULL;
 134     FreeType_Initialized = FALSE;
 135
 136 }