misc/libfreetype/src/type42/t42drivr.c
changeset 5172 88f2e05288ba
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libfreetype/src/type42/t42drivr.c	Mon Apr 25 01:46:54 2011 +0200
@@ -0,0 +1,246 @@
+/***************************************************************************/
+/*                                                                         */
+/*  t42drivr.c                                                             */
+/*                                                                         */
+/*    High-level Type 42 driver interface (body).                          */
+/*                                                                         */
+/*  Copyright 2002, 2003, 2004, 2006, 2007, 2009 by Roberto Alameda.       */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* This driver implements Type42 fonts as described in the               */
+  /* Technical Note #5012 from Adobe, with these limitations:              */
+  /*                                                                       */
+  /* 1) CID Fonts are not currently supported.                             */
+  /* 2) Incremental fonts making use of the GlyphDirectory keyword         */
+  /*    will be loaded, but the rendering will be using the TrueType       */
+  /*    tables.                                                            */
+  /* 3) As for Type1 fonts, CDevProc is not supported.                     */
+  /* 4) The Metrics dictionary is not supported.                           */
+  /* 5) AFM metrics are not supported.                                     */
+  /*                                                                       */
+  /* In other words, this driver supports Type42 fonts derived from        */
+  /* TrueType fonts in a non-CID manner, as done by usual conversion       */
+  /* programs.                                                             */
+  /*                                                                       */
+  /*************************************************************************/
+
+
+#include "t42drivr.h"
+#include "t42objs.h"
+#include "t42error.h"
+#include FT_INTERNAL_DEBUG_H
+
+#include FT_SERVICE_XFREE86_NAME_H
+#include FT_SERVICE_GLYPH_DICT_H
+#include FT_SERVICE_POSTSCRIPT_NAME_H
+#include FT_SERVICE_POSTSCRIPT_INFO_H
+
+#undef  FT_COMPONENT
+#define FT_COMPONENT  trace_t42
+
+
+  /*
+   *
+   *  GLYPH DICT SERVICE
+   *
+   */
+
+  static FT_Error
+  t42_get_glyph_name( T42_Face    face,
+                      FT_UInt     glyph_index,
+                      FT_Pointer  buffer,
+                      FT_UInt     buffer_max )
+  {
+    FT_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max );
+
+    return T42_Err_Ok;
+  }
+
+
+  static FT_UInt
+  t42_get_name_index( T42_Face    face,
+                      FT_String*  glyph_name )
+  {
+    FT_Int      i;
+    FT_String*  gname;
+
+
+    for ( i = 0; i < face->type1.num_glyphs; i++ )
+    {
+      gname = face->type1.glyph_names[i];
+
+      if ( glyph_name[0] == gname[0] && !ft_strcmp( glyph_name, gname ) )
+        return (FT_UInt)ft_atol( (const char *)face->type1.charstrings[i] );
+    }
+
+    return 0;
+  }
+
+
+  static const FT_Service_GlyphDictRec  t42_service_glyph_dict =
+  {
+    (FT_GlyphDict_GetNameFunc)  t42_get_glyph_name,
+    (FT_GlyphDict_NameIndexFunc)t42_get_name_index
+  };
+
+
+  /*
+   *
+   *  POSTSCRIPT NAME SERVICE
+   *
+   */
+
+  static const char*
+  t42_get_ps_font_name( T42_Face  face )
+  {
+    return (const char*)face->type1.font_name;
+  }
+
+
+  static const FT_Service_PsFontNameRec  t42_service_ps_font_name =
+  {
+    (FT_PsName_GetFunc)t42_get_ps_font_name
+  };
+
+
+  /*
+   *
+   *  POSTSCRIPT INFO SERVICE
+   *
+   */
+
+  static FT_Error
+  t42_ps_get_font_info( FT_Face          face,
+                        PS_FontInfoRec*  afont_info )
+  {
+    *afont_info = ((T42_Face)face)->type1.font_info;
+
+    return T42_Err_Ok;
+  }
+
+
+  static FT_Error
+  t42_ps_get_font_extra( FT_Face           face,
+                         PS_FontExtraRec*  afont_extra )
+  {
+    *afont_extra = ((T42_Face)face)->type1.font_extra;
+
+    return T42_Err_Ok;
+  }
+
+
+  static FT_Int
+  t42_ps_has_glyph_names( FT_Face  face )
+  {
+    FT_UNUSED( face );
+
+    return 1;
+  }
+
+
+  static FT_Error
+  t42_ps_get_font_private( FT_Face         face,
+                           PS_PrivateRec*  afont_private )
+  {
+    *afont_private = ((T42_Face)face)->type1.private_dict;
+
+    return T42_Err_Ok;
+  }
+
+
+  static const FT_Service_PsInfoRec  t42_service_ps_info =
+  {
+    (PS_GetFontInfoFunc)   t42_ps_get_font_info,
+    (PS_GetFontExtraFunc)   t42_ps_get_font_extra,
+    (PS_HasGlyphNamesFunc) t42_ps_has_glyph_names,
+    (PS_GetFontPrivateFunc)t42_ps_get_font_private
+  };
+
+
+  /*
+   *
+   *  SERVICE LIST
+   *
+   */
+
+  static const FT_ServiceDescRec  t42_services[] =
+  {
+    { FT_SERVICE_ID_GLYPH_DICT,           &t42_service_glyph_dict },
+    { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t42_service_ps_font_name },
+    { FT_SERVICE_ID_POSTSCRIPT_INFO,      &t42_service_ps_info },
+    { FT_SERVICE_ID_XF86_NAME,            FT_XF86_FORMAT_TYPE_42 },
+    { NULL, NULL }
+  };
+
+
+  static FT_Module_Interface
+  T42_Get_Interface( FT_Driver         driver,
+                     const FT_String*  t42_interface )
+  {
+    FT_UNUSED( driver );
+
+    return ft_service_list_lookup( t42_services, t42_interface );
+  }
+
+
+  const FT_Driver_ClassRec  t42_driver_class =
+  {
+    {
+      FT_MODULE_FONT_DRIVER       |
+      FT_MODULE_DRIVER_SCALABLE   |
+#ifdef TT_USE_BYTECODE_INTERPRETER
+      FT_MODULE_DRIVER_HAS_HINTER,
+#else
+      0,
+#endif
+
+      sizeof ( T42_DriverRec ),
+
+      "type42",
+      0x10000L,
+      0x20000L,
+
+      0,    /* format interface */
+
+      (FT_Module_Constructor)T42_Driver_Init,
+      (FT_Module_Destructor) T42_Driver_Done,
+      (FT_Module_Requester)  T42_Get_Interface,
+    },
+
+    sizeof ( T42_FaceRec ),
+    sizeof ( T42_SizeRec ),
+    sizeof ( T42_GlyphSlotRec ),
+
+    (FT_Face_InitFunc)        T42_Face_Init,
+    (FT_Face_DoneFunc)        T42_Face_Done,
+    (FT_Size_InitFunc)        T42_Size_Init,
+    (FT_Size_DoneFunc)        T42_Size_Done,
+    (FT_Slot_InitFunc)        T42_GlyphSlot_Init,
+    (FT_Slot_DoneFunc)        T42_GlyphSlot_Done,
+
+#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
+    ft_stub_set_char_sizes,
+    ft_stub_set_pixel_sizes,
+#endif
+    (FT_Slot_LoadFunc)        T42_GlyphSlot_Load,
+
+    (FT_Face_GetKerningFunc)  0,
+    (FT_Face_AttachFunc)      0,
+
+    (FT_Face_GetAdvancesFunc) 0,
+    (FT_Size_RequestFunc)     T42_Size_Request,
+    (FT_Size_SelectFunc)      T42_Size_Select
+  };
+
+
+/* END */