cidobjs.c

一个Xpdf应用的例子

/***************************************************************************/
/*                                                                         */
/*  cidobjs.c                                                              */
/*                                                                         */
/*    CID objects manager (body).                                          */
/*                                                                         */
/*  Copyright 1996-2001 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
#include FT_INTERNAL_POSTSCRIPT_HINTS_H

#include "ciderrs.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


  /*************************************************************************/
  /*                                                                       */
  /*                            SLOT  FUNCTIONS                            */
  /*                                                                       */
  /*************************************************************************/

  FT_LOCAL_DEF void
  CID_GlyphSlot_Done( CID_GlyphSlot  slot )
  {
    slot->root.internal->glyph_hints = 0;
  }


  FT_LOCAL_DEF FT_Error
  CID_GlyphSlot_Init( CID_GlyphSlot   slot )
  {
    CID_Face             face;
    PSHinter_Interface*  pshinter;


    face     = (CID_Face)slot->root.face;
    pshinter = (PSHinter_Interface *)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;
  }


  /*************************************************************************/
  /*                                                                       */
  /*                           SIZE  FUNCTIONS                             */
  /*                                                                       */
  /*************************************************************************/


  static PSH_Globals_Funcs
  CID_Size_Get_Globals_Funcs( CID_Size  size )
  {
    CID_Face             face     = (CID_Face)size->root.face;
    PSHinter_Interface*  pshinter = (PSHinter_Interface *)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
  CID_Size_Done( CID_Size  size )
  {
    if ( size->root.internal )
    {
      PSH_Globals_Funcs  funcs;


      funcs = CID_Size_Get_Globals_Funcs( size );
      if ( funcs )
        funcs->destroy( (PSH_Globals)size->root.internal );

      size->root.internal = 0;
    }
  }


  FT_LOCAL_DEF FT_Error
  CID_Size_Init( CID_Size  size )
  {
    FT_Error           error = 0;
    PSH_Globals_Funcs  funcs = CID_Size_Get_Globals_Funcs( size );


    if ( funcs )
    {
      PSH_Globals    globals;
      CID_Face       face = (CID_Face)size->root.face;
      CID_FontDict*  dict = face->cid.font_dicts + face->root.face_index;
      T1_Private*    priv = &dict->private_dict;


      error = funcs->create( size->root.face->memory, priv, &globals );
      if ( !error )
        size->root.internal = (FT_Size_Internal)(void*)globals;
    }

    return error;
  }


  FT_LOCAL_DEF FT_Error
  CID_Size_Reset( CID_Size  size )
  {
    PSH_Globals_Funcs  funcs = CID_Size_Get_Globals_Funcs( size );
    FT_Error           error = 0;


    if ( funcs )
      error = funcs->set_scale( (PSH_Globals)size->root.internal,
                                 size->root.metrics.x_scale,
                                 size->root.metrics.y_scale,
                                 0, 0 );
    return error;
  }




  /*************************************************************************/
  /*                                                                       */
  /*                           FACE  FUNCTIONS                             */
  /*                                                                       */
  /*************************************************************************/


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    CID_Face_Done                                                      */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Finalizes a given face object.                                     */
  /*                                                                       */
  /* <Input>                                                               */
  /*    face :: A pointer to the face object to destroy.                   */
  /*                                                                       */
  FT_LOCAL_DEF void
  CID_Face_Done( CID_Face  face )
  {
    FT_Memory  memory;


    if ( face )
    {
      CID_Info*     cid  = &face->cid;
      T1_FontInfo*  info = &cid->font_info;


      memory = face->root.memory;

      /* release subrs */
      if ( face->subrs )
      {
        FT_Int      n;
        

        for ( n = 0; n < cid->num_dicts; n++ )
        {
          CID_Subrs*  subr = face->subrs + n;
          

          if ( subr->code )
          {
            FREE( subr->code[0] );
            FREE( subr->code );
          }
        }

        FREE( face->subrs );
      }

      /* release FontInfo strings */
      FREE( info->version );
      FREE( info->notice );
      FREE( info->full_name );
      FREE( info->family_name );
      FREE( info->weight );