kc3-lang/freetype/src/sfnt/sfdriver.c

• Show log

  Commit

• Hash : b08fe2dc
  Author :
  Date : 2002-08-27T20:20:29
  

  * massive re-formatting changes to many, many source files. I don't want to list them all here. The operations performed were all logical transformations of the sources: - trying to convert all enums and constants to CAPITALIZED_STYLE, with #define definitions like #define my_old_constants MY_NEW_CONSTANT - big, big update of the documentation comments * include/freetype/freetype.h, src/base/ftobjs.c, src/smooth/ftsmooth.c, include/freetype/ftimage.h: adding support for LCD-optimized rendering though the new constants/enums: FT_RENDER_MODE_LCD, FT_RENDER_MODE_LCD_V FT_PIXEL_MODE_LCD, FT_PIXEL_MODE_LCD_V this is still work in progress, don't expect everything to work correctly though most of the features have been implemented. * adding new FT_LOAD_XXX flags, used to specify both hinting and rendering targets: FT_LOAD_TARGET_NORMAL :: anti-aliased hinting & rendering FT_LOAD_TARGET_MONO :: monochrome bitmaps FT_LOAD_TARGET_LCD :: horizontal RGB/BGR decimated hinting & rendering FT_LOAD_TARGET_LCD_V :: vertical RGB/BGR decimated hinting & rendering note that FT_LOAD_TARGET_NORMAL is 0, which means that the default behaviour of the font engine is _unchanged_.

Download

• src/sfnt/sfdriver.c

• /***************************************************************************/
  /*                                                                         */
  /*  sfdriver.c                                                             */
  /*                                                                         */
  /*    High-level SFNT driver interface (body).                             */
  /*                                                                         */
  /*  Copyright 1996-2001, 2002 by                                           */
  /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  /*                                                                         */
  /*  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.                                        */
  /*                                                                         */
  /***************************************************************************/
  
  
  #include <ft2build.h>
  #include FT_INTERNAL_SFNT_H
  #include FT_INTERNAL_OBJECTS_H
  
  #include "sfdriver.h"
  #include "ttload.h"
  #include "ttcmap.h"
  #include "sfobjs.h"
  
  #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
  #include "ttsbit.h"
  #endif
  
  #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
  #include "ttpost.h"
  #endif
  
  
    static void*
    get_sfnt_table( TT_Face      face,
                    FT_Sfnt_Tag  tag )
    {
      void*  table;
  
  
      switch ( tag )
      {
      case ft_sfnt_head:
        table = &face->header;
        break;
  
      case ft_sfnt_hhea:
        table = &face->horizontal;
        break;
  
      case ft_sfnt_vhea:
        table = face->vertical_info ? &face->vertical : 0;
        break;
  
      case ft_sfnt_os2:
        table = face->os2.version == 0xFFFFU ? 0 : &face->os2;
        break;
  
      case ft_sfnt_post:
        table = &face->postscript;
        break;
  
      case ft_sfnt_maxp:
        table = &face->max_profile;
        break;
  
      case ft_sfnt_pclt:
        table = face->pclt.Version ? &face->pclt : 0;
        break;
  
      default:
        table = 0;
      }
  
      return table;
    }
  
  
  #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
  
  
    static FT_Error
    get_sfnt_glyph_name( TT_Face     face,
                         FT_UInt     glyph_index,
                         FT_Pointer  buffer,
                         FT_UInt     buffer_max )
    {
      FT_String*  gname;
      FT_Error    error;
  
  
      error = tt_face_get_ps_name( face, glyph_index, &gname );
      if ( !error && buffer_max > 0 )
      {
        FT_UInt  len = (FT_UInt)( ft_strlen( gname ) );
  
  
        if ( len >= buffer_max )
          len = buffer_max - 1;
  
        FT_MEM_COPY( buffer, gname, len );
        ((FT_Byte*)buffer)[len] = 0;
      }
  
      return error;
    }
  
  
    static const char*
    get_sfnt_postscript_name( TT_Face  face )
    {
      FT_Int       n, found_win, found_apple;
      const char*  result = NULL;
  
  
      /* shouldn't happen, but just in case to avoid memory leaks */
      if ( face->root.internal->postscript_name )
        return face->root.internal->postscript_name;
  
      /* scan the name table to see whether we have a Postscript name here, */
      /* either in Macintosh or Windows platform encodings                  */
      found_win   = -1;
      found_apple = -1;
  
      for ( n = 0; n < face->num_names; n++ )
      {
        TT_NameEntryRec*  name = face->name_table.names + n;
  
  
        if ( name->nameID == 6 && name->stringLength > 0 )
        {
          if ( name->platformID == 3     &&
               name->encodingID == 1     &&
               name->languageID == 0x409 )
            found_win = n;
  
          if ( name->platformID == 1 &&
               name->encodingID == 0 &&
               name->languageID == 0 )
            found_apple = n;
        }
      }
  
      if ( found_win != -1 )
      {
        FT_Memory         memory = face->root.memory;
        TT_NameEntryRec*  name   = face->name_table.names + found_win;
        FT_UInt           len    = name->stringLength / 2;
        FT_Error          error;
  
  
        if ( !FT_ALLOC( result, name->stringLength + 1 ) )
        {
          FT_Stream   stream = face->name_table.stream;
          FT_String*  r      = (FT_String*)result;
          FT_Byte*    p      = (FT_Byte*)name->string;
  
  
          if ( FT_STREAM_SEEK( name->stringOffset ) ||
               FT_FRAME_ENTER( name->stringLength ) )
          {
            FT_FREE( result );
            name->stringLength = 0;
            name->stringOffset = 0;
            FT_FREE( name->string );
  
            goto Exit;
          }
  
          p = (FT_Byte*)stream->cursor;
  
          for ( ; len > 0; len--, p += 2 )
          {
            if ( p[0] == 0 && p[1] >= 32 && p[1] < 128 )
              *r++ = p[1];
          }
          *r = '\0';
  
          FT_FRAME_EXIT();
        }
        goto Exit;
      }
  
      if ( found_apple != -1 )
      {
        FT_Memory         memory = face->root.memory;
        TT_NameEntryRec*  name   = face->name_table.names + found_apple;
        FT_UInt           len    = name->stringLength;
        FT_Error          error;
  
  
        if ( !FT_ALLOC( result, len + 1 ) )
        {
          FT_Stream  stream = face->name_table.stream;
  
  
          if ( FT_STREAM_SEEK( name->stringOffset ) ||
               FT_STREAM_READ( result, len )        )
          {
            name->stringOffset = 0;
            name->stringLength = 0;
            FT_FREE( name->string );
            FT_FREE( result );
            goto Exit;
          }
          ((char*)result)[len] = '\0';
        }
      }
  
    Exit:
      face->root.internal->postscript_name = result;
      return result;
    }
  
  
  #endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */
  
  
    FT_CALLBACK_DEF( FT_Module_Interface )
    sfnt_get_interface( FT_Module    module,
                        const char*  module_interface )
    {
      FT_UNUSED( module );
  
      if ( ft_strcmp( module_interface, "get_sfnt" ) == 0 )
        return (FT_Module_Interface)get_sfnt_table;
  
  #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
      if ( ft_strcmp( module_interface, "glyph_name" ) == 0 )
        return (FT_Module_Interface)get_sfnt_glyph_name;
  #endif
  
      if ( ft_strcmp( module_interface, "postscript_name" ) == 0 )
        return (FT_Module_Interface)get_sfnt_postscript_name;
  
      return 0;
    }
  
  
    static
    const SFNT_Interface  sfnt_interface =
    {
      tt_face_goto_table,
  
      sfnt_init_face,
      sfnt_load_face,
      sfnt_done_face,
      sfnt_get_interface,
  
      tt_face_load_any,
      tt_face_load_sfnt_header,
      tt_face_load_directory,
  
      tt_face_load_header,
      tt_face_load_metrics_header,
      tt_face_load_cmap,
      tt_face_load_max_profile,
      tt_face_load_os2,
      tt_face_load_postscript,
  
      tt_face_load_names,
      tt_face_free_names,
  
      tt_face_load_hdmx,
      tt_face_free_hdmx,
  
      tt_face_load_kern,
      tt_face_load_gasp,
      tt_face_load_pclt,
  
  #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
  
      /* see `ttload.h' */
      tt_face_load_bitmap_header,
  
      /* see `ttsbit.h' */
      tt_face_set_sbit_strike,
      tt_face_load_sbit_strikes,
      tt_face_load_sbit_image,
      tt_face_free_sbit_strikes,
  
  #else /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
  
      0,
      0,
      0,
      0,
      0,
  
  #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
  
  #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
  
      /* see `ttpost.h' */
      tt_face_get_ps_name,
      tt_face_free_ps_names,
  
  #else /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */
  
      0,
      0,
  
  #endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */
  
      /* see `ttcmap.h' */
      tt_face_load_charmap,
      tt_face_free_charmap,
    };
  
  
    FT_CALLBACK_TABLE_DEF
    const FT_Module_Class  sfnt_module_class =
    {
      0,  /* not a font driver or renderer */
      sizeof( FT_ModuleRec ),
  
      "sfnt",     /* driver name                            */
      0x10000L,   /* driver version 1.0                     */
      0x20000L,   /* driver requires FreeType 2.0 or higher */
  
      (const void*)&sfnt_interface,  /* module specific interface */
  
      (FT_Module_Constructor)0,
      (FT_Module_Destructor) 0,
      (FT_Module_Requester)  sfnt_get_interface
    };
  
  
  /* END */
  

Download