kc3-lang/freetype/src/type1/t1objs.c

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• Hash : 1ad384d8
  Author :
  Date : 2008-12-25T23:52:00
  

  Set `face_index' field in FT_Face for all font formats. * cff/cffobjs.c (cff_face_init), winfonts/winfnt.c (FNT_Face_Init), sfnt/sfobjs.c (sfnt_init_face): Do it. * docs/CHANGES: Document it.

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• src/type1/t1objs.c

• /***************************************************************************/
  /*                                                                         */
  /*  t1objs.c                                                               */
  /*                                                                         */
  /*    Type 1 objects manager (body).                                       */
  /*                                                                         */
  /*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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_DEBUG_H
  #include FT_INTERNAL_STREAM_H
  #include FT_TRUETYPE_IDS_H
  
  #include "t1gload.h"
  #include "t1load.h"
  
  #include "t1errors.h"
  
  #ifndef T1_CONFIG_OPTION_NO_AFM
  #include "t1afm.h"
  #endif
  
  #include FT_SERVICE_POSTSCRIPT_CMAPS_H
  #include FT_INTERNAL_POSTSCRIPT_AUX_H
  
  
    /*************************************************************************/
    /*                                                                       */
    /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
    /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
    /* messages during execution.                                            */
    /*                                                                       */
  #undef  FT_COMPONENT
  #define FT_COMPONENT  trace_t1objs
  
  
    /*************************************************************************/
    /*                                                                       */
    /*                            SIZE FUNCTIONS                             */
    /*                                                                       */
    /*  note that we store the global hints in the size's "internal" root    */
    /*  field                                                                */
    /*                                                                       */
    /*************************************************************************/
  
  
    static PSH_Globals_Funcs
    T1_Size_Get_Globals_Funcs( T1_Size  size )
    {
      T1_Face           face     = (T1_Face)size->root.face;
      PSHinter_Service  pshinter = (PSHinter_Service)face->pshinter;
      FT_Module         module;
  
  
      module = FT_Get_Module( size->root.face->driver->root.library,
                              "pshinter" );
      return ( module && pshinter && pshinter->get_globals_funcs )
             ? pshinter->get_globals_funcs( module )
             : 0 ;
    }
  
  
    FT_LOCAL_DEF( void )
    T1_Size_Done( T1_Size  size )
    {
      if ( size->root.internal )
      {
        PSH_Globals_Funcs  funcs;
  
  
        funcs = T1_Size_Get_Globals_Funcs( size );
        if ( funcs )
          funcs->destroy( (PSH_Globals)size->root.internal );
  
        size->root.internal = 0;
      }
    }
  
  
    FT_LOCAL_DEF( FT_Error )
    T1_Size_Init( T1_Size  size )
    {
      FT_Error           error = T1_Err_Ok;
      PSH_Globals_Funcs  funcs = T1_Size_Get_Globals_Funcs( size );
  
  
      if ( funcs )
      {
        PSH_Globals  globals;
        T1_Face      face = (T1_Face)size->root.face;
  
  
        error = funcs->create( size->root.face->memory,
                               &face->type1.private_dict, &globals );
        if ( !error )
          size->root.internal = (FT_Size_Internal)(void*)globals;
      }
  
      return error;
    }
  
  
    FT_LOCAL_DEF( FT_Error )
    T1_Size_Request( T1_Size          size,
                     FT_Size_Request  req )
    {
      PSH_Globals_Funcs  funcs = T1_Size_Get_Globals_Funcs( size );
  
  
      FT_Request_Metrics( size->root.face, req );
  
      if ( funcs )
        funcs->set_scale( (PSH_Globals)size->root.internal,
                          size->root.metrics.x_scale,
                          size->root.metrics.y_scale,
                          0, 0 );
  
      return T1_Err_Ok;
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /*                            SLOT  FUNCTIONS                            */
    /*                                                                       */
    /*************************************************************************/
  
    FT_LOCAL_DEF( void )
    T1_GlyphSlot_Done( T1_GlyphSlot  slot )
    {
      slot->root.internal->glyph_hints = 0;
    }
  
  
    FT_LOCAL_DEF( FT_Error )
    T1_GlyphSlot_Init( T1_GlyphSlot  slot )
    {
      T1_Face           face;
      PSHinter_Service  pshinter;
  
  
      face     = (T1_Face)slot->root.face;
      pshinter = (PSHinter_Service)face->pshinter;
  
      if ( pshinter )
      {
        FT_Module  module;
  
  
        module = FT_Get_Module( slot->root.face->driver->root.library, "pshinter" );
        if (module)
        {
          T1_Hints_Funcs  funcs;
  
          funcs = pshinter->get_t1_funcs( module );
          slot->root.internal->glyph_hints = (void*)funcs;
        }
      }
      return 0;
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /*                            FACE  FUNCTIONS                            */
    /*                                                                       */
    /*************************************************************************/
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    T1_Face_Done                                                       */
    /*                                                                       */
    /* <Description>                                                         */
    /*    The face object destructor.                                        */
    /*                                                                       */
    /* <Input>                                                               */
    /*    face :: A typeless pointer to the face object to destroy.          */
    /*                                                                       */
    FT_LOCAL_DEF( void )
    T1_Face_Done( T1_Face  face )
    {
      FT_Memory  memory;
      T1_Font    type1;
  
  
      if ( !face )
        return;
  
      memory = face->root.memory;
      type1  = &face->type1;
  
  #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
      /* release multiple masters information */
      FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );
  
      if ( face->buildchar )
      {
        FT_FREE( face->buildchar );
  
        face->buildchar     = NULL;
        face->len_buildchar = 0;
      }
  
      T1_Done_Blend( face );
      face->blend = 0;
  #endif
  
      /* release font info strings */
      {
        PS_FontInfo  info = &type1->font_info;
  
  
        FT_FREE( info->version );
        FT_FREE( info->notice );
        FT_FREE( info->full_name );
        FT_FREE( info->family_name );
        FT_FREE( info->weight );
      }
  
      /* release top dictionary */
      FT_FREE( type1->charstrings_len );
      FT_FREE( type1->charstrings );
      FT_FREE( type1->glyph_names );
  
      FT_FREE( type1->subrs );
      FT_FREE( type1->subrs_len );
  
      FT_FREE( type1->subrs_block );
      FT_FREE( type1->charstrings_block );
      FT_FREE( type1->glyph_names_block );
  
      FT_FREE( type1->encoding.char_index );
      FT_FREE( type1->encoding.char_name );
      FT_FREE( type1->font_name );
  
  #ifndef T1_CONFIG_OPTION_NO_AFM
      /* release afm data if present */
      if ( face->afm_data )
        T1_Done_Metrics( memory, (AFM_FontInfo)face->afm_data );
  #endif
  
      /* release unicode map, if any */
  #if 0
      FT_FREE( face->unicode_map_rec.maps );
      face->unicode_map_rec.num_maps = 0;
      face->unicode_map              = NULL;
  #endif
  
      face->root.family_name = NULL;
      face->root.style_name  = NULL;
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    T1_Face_Init                                                       */
    /*                                                                       */
    /* <Description>                                                         */
    /*    The face object constructor.                                       */
    /*                                                                       */
    /* <Input>                                                               */
    /*    stream     ::  input stream where to load font data.               */
    /*                                                                       */
    /*    face_index :: The index of the font face in the resource.          */
    /*                                                                       */
    /*    num_params :: Number of additional generic parameters.  Ignored.   */
    /*                                                                       */
    /*    params     :: Additional generic parameters.  Ignored.             */
    /*                                                                       */
    /* <InOut>                                                               */
    /*    face       :: The face record to build.                            */
    /*                                                                       */
    /* <Return>                                                              */
    /*    FreeType error code.  0 means success.                             */
    /*                                                                       */
    FT_LOCAL_DEF( FT_Error )
    T1_Face_Init( FT_Stream      stream,
                  T1_Face        face,
                  FT_Int         face_index,
                  FT_Int         num_params,
                  FT_Parameter*  params )
    {
      FT_Error            error;
      FT_Service_PsCMaps  psnames;
      PSAux_Service       psaux;
      T1_Font             type1 = &face->type1;
      PS_FontInfo         info = &type1->font_info;
  
      FT_UNUSED( num_params );
      FT_UNUSED( params );
      FT_UNUSED( stream );
  
  
      face->root.num_faces = 1;
  
      FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
      face->psnames = psnames;
  
      face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
                                             "psaux" );
      psaux = (PSAux_Service)face->psaux;
  
      face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
                                                "pshinter" );
  
      /* open the tokenizer; this will also check the font format */
      error = T1_Open_Face( face );
      if ( error )
        goto Exit;
  
      /* if we just wanted to check the format, leave successfully now */
      if ( face_index < 0 )
        goto Exit;
  
      /* check the face index */
      if ( face_index > 0 )
      {
        FT_ERROR(( "T1_Face_Init: invalid face index\n" ));
        error = T1_Err_Invalid_Argument;
        goto Exit;
      }
  
      /* now load the font program into the face object */
  
      /* initialize the face object fields */
  
      /* set up root face fields */
      {
        FT_Face  root = (FT_Face)&face->root;
  
  
        root->num_glyphs = type1->num_glyphs;
        root->face_index = 0;
  
        root->face_flags = FT_FACE_FLAG_SCALABLE    |
                           FT_FACE_FLAG_HORIZONTAL  |
                           FT_FACE_FLAG_GLYPH_NAMES |
                           FT_FACE_FLAG_HINTER;
  
        if ( info->is_fixed_pitch )
          root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
  
        if ( face->blend )
          root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;
  
        /* XXX: TODO -- add kerning with .afm support */
  
  
        /* The following code to extract the family and the style is very   */
        /* simplistic and might get some things wrong.  For a full-featured */
        /* algorithm you might have a look at the whitepaper given at       */
        /*                                                                  */
        /*   http://blogs.msdn.com/text/archive/2007/04/23/wpf-font-selection-model.aspx */
  
        /* get style name -- be careful, some broken fonts only */
        /* have a `/FontName' dictionary entry!                 */
        root->family_name = info->family_name;
        root->style_name  = NULL;
  
        if ( root->family_name )
        {
          char*  full   = info->full_name;
          char*  family = root->family_name;
  
  
          if ( full )
          {
            FT_Bool  the_same = TRUE;
  
  
            while ( *full )
            {
              if ( *full == *family )
              {
                family++;
                full++;
              }
              else
              {
                if ( *full == ' ' || *full == '-' )
                  full++;
                else if ( *family == ' ' || *family == '-' )
                  family++;
                else
                {
                  the_same = FALSE;
  
                  if ( !*family )
                    root->style_name = full;
                  break;
                }
              }
            }
  
            if ( the_same )
              root->style_name = (char *)"Regular";
          }
        }
        else
        {
          /* do we have a `/FontName'? */
          if ( type1->font_name )
            root->family_name = type1->font_name;
        }
  
        if ( !root->style_name )
        {
          if ( info->weight )
            root->style_name = info->weight;
          else
            /* assume `Regular' style because we don't know better */
            root->style_name = (char *)"Regular";
        }
  
        /* compute style flags */
        root->style_flags = 0;
        if ( info->italic_angle )
          root->style_flags |= FT_STYLE_FLAG_ITALIC;
        if ( info->weight )
        {
          if ( !ft_strcmp( info->weight, "Bold"  ) ||
               !ft_strcmp( info->weight, "Black" ) )
            root->style_flags |= FT_STYLE_FLAG_BOLD;
        }
  
        /* no embedded bitmap support */
        root->num_fixed_sizes = 0;
        root->available_sizes = 0;
  
        root->bbox.xMin =   type1->font_bbox.xMin             >> 16;
        root->bbox.yMin =   type1->font_bbox.yMin             >> 16;
        root->bbox.xMax = ( type1->font_bbox.xMax + 0xFFFFU ) >> 16;
        root->bbox.yMax = ( type1->font_bbox.yMax + 0xFFFFU ) >> 16;
  
        /* Set units_per_EM if we didn't set it in parse_font_matrix. */
        if ( !root->units_per_EM )
          root->units_per_EM = 1000;
  
        root->ascender  = (FT_Short)( root->bbox.yMax );
        root->descender = (FT_Short)( root->bbox.yMin );
  
        root->height = (FT_Short)( ( root->units_per_EM * 12 ) / 10 );
        if ( root->height < root->ascender - root->descender )
          root->height = (FT_Short)( root->ascender - root->descender );
  
        /* now compute the maximum advance width */
        root->max_advance_width =
          (FT_Short)( root->bbox.xMax );
        {
          FT_Pos  max_advance;
  
  
          error = T1_Compute_Max_Advance( face, &max_advance );
  
          /* in case of error, keep the standard width */
          if ( !error )
            root->max_advance_width = (FT_Short)max_advance;
          else
            error = T1_Err_Ok;   /* clear error */
        }
  
        root->max_advance_height = root->height;
  
        root->underline_position  = (FT_Short)info->underline_position;
        root->underline_thickness = (FT_Short)info->underline_thickness;
      }
  
      {
        FT_Face  root = &face->root;
  
  
        if ( psnames && psaux )
        {
          FT_CharMapRec    charmap;
          T1_CMap_Classes  cmap_classes = psaux->t1_cmap_classes;
          FT_CMap_Class    clazz;
  
  
          charmap.face = root;
  
          /* first of all, try to synthesize a Unicode charmap */
          charmap.platform_id = 3;
          charmap.encoding_id = 1;
          charmap.encoding    = FT_ENCODING_UNICODE;
  
          FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );
  
          /* now, generate an Adobe Standard encoding when appropriate */
          charmap.platform_id = 7;
          clazz               = NULL;
  
          switch ( type1->encoding_type )
          {
          case T1_ENCODING_TYPE_STANDARD:
            charmap.encoding    = FT_ENCODING_ADOBE_STANDARD;
            charmap.encoding_id = TT_ADOBE_ID_STANDARD;
            clazz               = cmap_classes->standard;
            break;
  
          case T1_ENCODING_TYPE_EXPERT:
            charmap.encoding    = FT_ENCODING_ADOBE_EXPERT;
            charmap.encoding_id = TT_ADOBE_ID_EXPERT;
            clazz               = cmap_classes->expert;
            break;
  
          case T1_ENCODING_TYPE_ARRAY:
            charmap.encoding    = FT_ENCODING_ADOBE_CUSTOM;
            charmap.encoding_id = TT_ADOBE_ID_CUSTOM;
            clazz               = cmap_classes->custom;
            break;
  
          case T1_ENCODING_TYPE_ISOLATIN1:
            charmap.encoding    = FT_ENCODING_ADOBE_LATIN_1;
            charmap.encoding_id = TT_ADOBE_ID_LATIN_1;
            clazz               = cmap_classes->unicode;
            break;
  
          default:
            ;
          }
  
          if ( clazz )
            FT_CMap_New( clazz, NULL, &charmap, NULL );
  
  #if 0
          /* Select default charmap */
          if (root->num_charmaps)
            root->charmap = root->charmaps[0];
  #endif
        }
      }
  
    Exit:
      return error;
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    T1_Driver_Init                                                     */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Initializes a given Type 1 driver object.                          */
    /*                                                                       */
    /* <Input>                                                               */
    /*    driver :: A handle to the target driver object.                    */
    /*                                                                       */
    /* <Return>                                                              */
    /*    FreeType error code.  0 means success.                             */
    /*                                                                       */
    FT_LOCAL_DEF( FT_Error )
    T1_Driver_Init( T1_Driver  driver )
    {
      FT_UNUSED( driver );
  
      return T1_Err_Ok;
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    T1_Driver_Done                                                     */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Finalizes a given Type 1 driver.                                   */
    /*                                                                       */
    /* <Input>                                                               */
    /*    driver :: A handle to the target Type 1 driver.                    */
    /*                                                                       */
    FT_LOCAL_DEF( void )
    T1_Driver_Done( T1_Driver  driver )
    {
      FT_UNUSED( driver );
    }
  
  
  /* END */
  

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