kc3-lang/freetype/src/cid/cidobjs.c

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• Hash : 8d3a401f
  Author :
  Date : 2001-03-20T11:14:24
  

  * builds/*/*-def.mk: changed the objects directory from "obj" to "objs" * include/freetype/config/ftheader.h: removed obsolete macros like FT_SOURCE_FILE, etc.. and added cache-specific macro definitions that were previously defined in <freetype/ftcache.h>. Added comments to be included in a new API Reference section. * src/*/*: removed the use of FT_SOURCE_FILE, etc.. now, each component needs to added its own directory to the include path at compile time. Modified all "rules.mk" and "descrip.mms" accordingly..

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• src/cid/cidobjs.c

• /***************************************************************************/
  /*                                                                         */
  /*  cidobjs.c                                                              */
  /*                                                                         */
  /*    CID objects manager (body).                                          */
  /*                                                                         */
  /*  Copyright 1996-2000 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 "cidgload.h"
  #include "cidload.h"
  #include FT_INTERNAL_POSTSCRIPT_NAMES_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_cidobjs
  
  
    /*************************************************************************/
    /*                                                                       */
    /*                           FACE  FUNCTIONS                             */
    /*                                                                       */
    /*************************************************************************/
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    CID_Done_Face                                                      */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Finalizes a given face object.                                     */
    /*                                                                       */
    /* <Input>                                                               */
    /*    face :: A pointer to the face object to destroy.                   */
    /*                                                                       */
    FT_LOCAL_DEF
    void  CID_Done_Face( CID_Face  face )
    {
      FT_Memory  memory;
  
  
      if ( face )
      {
        CID_Info*     cid  = &face->cid;
        T1_FontInfo*  info = &cid->font_info;
  
  
        memory = face->root.memory;
  
        /* release FontInfo strings */
        FREE( info->version );
        FREE( info->notice );
        FREE( info->full_name );
        FREE( info->family_name );
        FREE( info->weight );
  
        /* release font dictionaries */
        FREE( cid->font_dicts );
        cid->num_dicts = 0;
  
        /* release other strings */
        FREE( cid->cid_font_name );
        FREE( cid->registry );
        FREE( cid->ordering );
  
        face->root.family_name = 0;
        face->root.style_name  = 0;
      }
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    CID_Init_Face                                                      */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Initializes a given CID face object.                               */
    /*                                                                       */
    /* <Input>                                                               */
    /*    stream     :: The source font stream.                              */
    /*                                                                       */
    /*    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 newly built face object.                         */
    /*                                                                       */
    /* <Return>                                                              */
    /*    FreeType error code.  0 means success.                             */
    /*                                                                       */
    FT_LOCAL_DEF
    FT_Error  CID_Init_Face( FT_Stream      stream,
                             CID_Face       face,
                             FT_Int         face_index,
                             FT_Int         num_params,
                             FT_Parameter*  params )
    {
      FT_Error            error;
      PSNames_Interface*  psnames;
      PSAux_Interface*    psaux;
  
      FT_UNUSED( num_params );
      FT_UNUSED( params );
      FT_UNUSED( face_index );
      FT_UNUSED( stream );
  
  
      face->root.num_faces = 1;
  
      psnames = (PSNames_Interface*)face->psnames;
      if ( !psnames )
      {
        psnames = (PSNames_Interface*)FT_Get_Module_Interface(
                    FT_FACE_LIBRARY( face ), "psnames" );
  
        face->psnames = psnames;
      }
  
      psaux = (PSAux_Interface*)face->psaux;
      if ( !psaux )
      {
        psaux = (PSAux_Interface*)FT_Get_Module_Interface(
                    FT_FACE_LIBRARY( face ), "psaux" );
  
        face->psaux = psaux;
      }
  
      /* open the tokenizer; this will also check the font format */
      if ( FILE_Seek( 0 ) )
        goto Exit;
  
      error = CID_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(( "CID_Init_Face: invalid face index\n" ));
        error = T1_Err_Invalid_Argument;
        goto Exit;
      }
  
      /* Now, load the font program into the face object */
      {
        /* Init the face object fields */
        /* Now set up root face fields */
        {
          FT_Face  root = (FT_Face)&face->root;
  
  
          root->num_glyphs   = face->cid.cid_count;
          root->num_charmaps = 0;
  
          root->face_index = face_index;
          root->face_flags = FT_FACE_FLAG_SCALABLE;
  
          root->face_flags |= FT_FACE_FLAG_HORIZONTAL;
  
          if ( face->cid.font_info.is_fixed_pitch )
            root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
  
          /* XXX: TODO: add kerning with .afm support */
  
          /* get style name -- be careful, some broken fonts only */
          /* have a /FontName dictionary entry!                   */
          root->family_name = face->cid.font_info.family_name;
          if ( root->family_name )
          {
            char*  full   = face->cid.font_info.full_name;
            char*  family = root->family_name;
  
            while ( *family && *full == *family )
            {
              family++;
              full++;
            }
  
            root->style_name = ( *full == ' ' ) ? full + 1
                                                : (char *)"Regular";
          }
          else
          {
            /* do we have a `/FontName'? */
            if ( face->cid.cid_font_name )
            {
              root->family_name = face->cid.cid_font_name;
              root->style_name  = (char *)"Regular";
            }
          }
  
          /* no embedded bitmap support */
          root->num_fixed_sizes = 0;
          root->available_sizes = 0;
  
          root->bbox         = face->cid.font_bbox;
          if ( !root->units_per_EM )
            root->units_per_EM  = 1000;
  
          root->ascender     = (FT_Short)(face->cid.font_bbox.yMax >> 16);
          root->descender    = (FT_Short)(face->cid.font_bbox.yMin >> 16);
          root->height       = ( ( root->ascender + root->descender ) * 12 )
                               / 10;
  
  
  #if 0
  
          /* now compute the maximum advance width */
  
          root->max_advance_width = face->type1.private_dict.standard_width[0];
  
          /* compute max advance width for proportional fonts */
          if ( !face->type1.font_info.is_fixed_pitch )
          {
            FT_Int  max_advance;
  
  
            error = CID_Compute_Max_Advance( face, &max_advance );
  
            /* in case of error, keep the standard width */
            if ( !error )
              root->max_advance_width = max_advance;
            else
              error = 0;   /* clear error */
          }
  
          root->max_advance_height = root->height;
  
  #endif /* 0 */
  
          root->underline_position  = face->cid.font_info.underline_position;
          root->underline_thickness = face->cid.font_info.underline_thickness;
  
          root->internal->max_points   = 0;
          root->internal->max_contours = 0;
        }
      }
  
  #if 0
  
      /* charmap support - synthetize unicode charmap when possible */
      {
        FT_Face      root    = &face->root;
        FT_CharMap   charmap = face->charmaprecs;
  
  
        /* synthesize a Unicode charmap if there is support in the `psnames' */
        /* module                                                            */
        if ( face->psnames )
        {
          PSNames_Interface*  psnames = (PSNames_Interface*)face->psnames;
  
  
          if ( psnames->unicode_value )
          {
            error = psnames->build_unicodes(
                               root->memory,
                               face->type1.num_glyphs,
                               (const char**)face->type1.glyph_names,
                               &face->unicode_map );
            if ( !error )
            {
              root->charmap        = charmap;
              charmap->face        = (FT_Face)face;
              charmap->encoding    = ft_encoding_unicode;
              charmap->platform_id = 3;
              charmap->encoding_id = 1;
              charmap++;
            }
  
            /* simply clear the error in case of failure (which really */
            /* means that out of memory or no unicode glyph names)     */
            error = 0;
          }
        }
  
        /* now, support either the standard, expert, or custom encodings */
        charmap->face        = (FT_Face)face;
        charmap->platform_id = 7;  /* a new platform id for Adobe fonts? */
  
        switch ( face->type1.encoding_type )
        {
        case t1_encoding_standard:
          charmap->encoding    = ft_encoding_adobe_standard;
          charmap->encoding_id = 0;
          break;
  
        case t1_encoding_expert:
          charmap->encoding    = ft_encoding_adobe_expert;
          charmap->encoding_id = 1;
          break;
  
        default:
          charmap->encoding    = ft_encoding_adobe_custom;
          charmap->encoding_id = 2;
          break;
        }
  
        root->charmaps     = face->charmaps;
        root->num_charmaps = charmap - face->charmaprecs + 1;
        face->charmaps[0]  = &face->charmaprecs[0];
        face->charmaps[1]  = &face->charmaprecs[1];
      }
  
  #endif /* 0 */
  
    Exit:
      return error;
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    CID_Init_Driver                                                    */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Initializes a given CID driver object.                             */
    /*                                                                       */
    /* <Input>                                                               */
    /*    driver :: A handle to the target driver object.                    */
    /*                                                                       */
    /* <Return>                                                              */
    /*    FreeType error code.  0 means success.                             */
    /*                                                                       */
    FT_LOCAL_DEF
    FT_Error  CID_Init_Driver( CID_Driver  driver )
    {
      FT_UNUSED( driver );
  
      return T1_Err_Ok;
    }
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    CID_Done_Driver                                                    */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Finalizes a given CID driver.                                      */
    /*                                                                       */
    /* <Input>                                                               */
    /*    driver :: A handle to the target CID driver.                       */
    /*                                                                       */
    FT_LOCAL
    void  CID_Done_Driver( CID_Driver  driver )
    {
      FT_UNUSED( driver );
    }
  
  
  /* END */
  

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