ftcglyph.c

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Author : David Turner
Date : 2003-12-19 21:23:58
Hash : 57ecae22
Message : new version of the cache sub-system - still under debugging
src/cache/ftcglyph.c
/***************************************************************************/
/*                                                                         */
/*  ftcglyph.c                                                             */
/*                                                                         */
/*    FreeType Glyph Image (FT_Glyph) cache (body).                        */
/*                                                                         */
/*  Copyright 2000-2001 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_CACHE_H
#include FT_CACHE_INTERNAL_GLYPH_H
#include FT_ERRORS_H
#include FT_INTERNAL_OBJECTS_H
#include FT_INTERNAL_DEBUG_H

#include "ftcerror.h"


  /* create a new chunk node, setting its cache index and ref count */
  FT_EXPORT_DEF( void )
  FTC_GNode_Init( FTC_GNode   gnode,
                  FT_UInt     gindex,
                  FTC_Family  family )
  {
    gnode->family = family;
    gnode->gindex = gindex;
    family->num_nodes++;
  }


  FT_EXPORT_DEF( void )
  FTC_GNode_UnselectFamily( FTC_GNode   gnode,
                            FTC_Cache   cache )
  {
    FTC_Family  family = gnode->family;

    gnode->family = NULL;
    if ( family && --family->num_nodes <= 0 )
      FTC_MruList_Remove( & FTC_GCACHE(cache)->families, (FTC_MruNode)family );
  }


  FT_EXPORT_DEF( void )
  FTC_GNode_Done( FTC_GNode  gnode,
                  FTC_Cache  cache )
  {
    /* finalize the node */
    gnode->gindex = 0;

    FTC_GNode_UnselectFamily( gnode, cache );
  }


  FT_EXPORT_DEF( FT_Bool )
  FTC_GNode_Compare( FTC_GNode   gnode,
                     FTC_GQuery  gquery )
  {
    return FT_BOOL(  gnode->family == gquery->family &&
                     gnode->gindex == gquery->gindex );
  }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                      CHUNK SETS                               *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  FT_EXPORT_DEF( void )
  ftc_family_init( FTC_Family  family,
                   FTC_Cache   cache )
  {
    FTC_GCacheClass  clazz = FTC_CACHE__GCACHE_CLASS(cache);

    family->clazz     = clazz->family_class;
    family->num_nodes = 0;
  }


  FT_EXPORT_DEF( FT_Error )
  FTC_GCache_Init( FTC_GCache  cache )
  {
    FT_Error error;

    error = FTC_Cache_Init( FTC_CACHE(cache) );
    if ( !error )
    {
      FTC_GCacheClass   clazz = (FTC_GCacheClass) FTC_CACHE(cache)->org_class;

      FTC_MruList_Init( &cache->families,
                        clazz->family_class,
                        0,  /* no maximum here !! */
                        cache,
                        FTC_CACHE(cache)->memory );
    }
    return error;
  }


  FT_EXPORT_DEF( void )
  FTC_GCache_Done( FTC_GCache  cache )
  {
    FTC_Cache_Done( (FTC_Cache)cache );
    FTC_MruList_Done( &cache->families );
  }


  FT_EXPORT_DEF( FT_Error )
  FTC_GCache_New( FTC_Manager       manager,
                  FTC_GCacheClass   clazz,
                  FTC_GCache       *acache )
  {
    return FTC_Manager_RegisterCache( manager, (FTC_CacheClass) clazz,
                                      (FTC_Cache*) acache );
  }


  FT_EXPORT_DEF( FT_Error )
  FTC_GCache_Lookup( FTC_GCache   cache,
                     FT_UInt32    hash,
                     FT_UInt      gindex,
                     FTC_GQuery   query,
                     FTC_Node    *anode )
  {
    FT_Error  error;

    query->gindex = gindex;

    error = FTC_MruList_Lookup( &cache->families, query,
                                (FTC_MruNode*) &query->family );
    if ( !error )
      error = FTC_Cache_Lookup( FTC_CACHE(cache), hash, query, anode );

    return error;
  }


/* END */
kc3-lang/freetype/src/cache/ftcglyph.c

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kc3-lang/freetype /src/cache/ftcglyph.c
