changed icon for freezer (
issue #614 ), for rope (to be easier to recognize) and cluster bomb (to be easier to recognize and to so that it can be distinguished from the regular grenade's icon even when no color is present or perceived
/***************************************************************************/
/* */
/* ftccmap.c */
/* */
/* FreeType CharMap cache (body) */
/* */
/* Copyright 2000-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, */
/* 2010, 2011 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_FREETYPE_H
#include FT_CACHE_H
#include "ftcmanag.h"
#include FT_INTERNAL_MEMORY_H
#include FT_INTERNAL_OBJECTS_H
#include FT_INTERNAL_DEBUG_H
#include "ftccback.h"
#include "ftcerror.h"
#undef FT_COMPONENT
#define FT_COMPONENT trace_cache
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
typedef enum FTC_OldCMapType_
{
FTC_OLD_CMAP_BY_INDEX = 0,
FTC_OLD_CMAP_BY_ENCODING = 1,
FTC_OLD_CMAP_BY_ID = 2
} FTC_OldCMapType;
typedef struct FTC_OldCMapIdRec_
{
FT_UInt platform;
FT_UInt encoding;
} FTC_OldCMapIdRec, *FTC_OldCMapId;
typedef struct FTC_OldCMapDescRec_
{
FTC_FaceID face_id;
FTC_OldCMapType type;
union
{
FT_UInt index;
FT_Encoding encoding;
FTC_OldCMapIdRec id;
} u;
} FTC_OldCMapDescRec, *FTC_OldCMapDesc;
#endif /* FT_CONFIG_OLD_INTERNALS */
/*************************************************************************/
/* */
/* Each FTC_CMapNode contains a simple array to map a range of character */
/* codes to equivalent glyph indices. */
/* */
/* For now, the implementation is very basic: Each node maps a range of */
/* 128 consecutive character codes to their corresponding glyph indices. */
/* */
/* We could do more complex things, but I don't think it is really very */
/* useful. */
/* */
/*************************************************************************/
/* number of glyph indices / character code per node */
#define FTC_CMAP_INDICES_MAX 128
/* compute a query/node hash */
#define FTC_CMAP_HASH( faceid, index, charcode ) \
( _FTC_FACE_ID_HASH( faceid ) + 211 * (index) + \
( (charcode) / FTC_CMAP_INDICES_MAX ) )
/* the charmap query */
typedef struct FTC_CMapQueryRec_
{
FTC_FaceID face_id;
FT_UInt cmap_index;
FT_UInt32 char_code;
} FTC_CMapQueryRec, *FTC_CMapQuery;
#define FTC_CMAP_QUERY( x ) ((FTC_CMapQuery)(x))
#define FTC_CMAP_QUERY_HASH( x ) \
FTC_CMAP_HASH( (x)->face_id, (x)->cmap_index, (x)->char_code )
/* the cmap cache node */
typedef struct FTC_CMapNodeRec_
{
FTC_NodeRec node;
FTC_FaceID face_id;
FT_UInt cmap_index;
FT_UInt32 first; /* first character in node */
FT_UInt16 indices[FTC_CMAP_INDICES_MAX]; /* array of glyph indices */
} FTC_CMapNodeRec, *FTC_CMapNode;
#define FTC_CMAP_NODE( x ) ( (FTC_CMapNode)( x ) )
#define FTC_CMAP_NODE_HASH( x ) \
FTC_CMAP_HASH( (x)->face_id, (x)->cmap_index, (x)->first )
/* if (indices[n] == FTC_CMAP_UNKNOWN), we assume that the corresponding */
/* glyph indices haven't been queried through FT_Get_Glyph_Index() yet */
#define FTC_CMAP_UNKNOWN ( (FT_UInt16)-1 )
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** CHARMAP NODES *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
FT_CALLBACK_DEF( void )
ftc_cmap_node_free( FTC_Node ftcnode,
FTC_Cache cache )
{
FTC_CMapNode node = (FTC_CMapNode)ftcnode;
FT_Memory memory = cache->memory;
FT_FREE( node );
}
/* initialize a new cmap node */
FT_CALLBACK_DEF( FT_Error )
ftc_cmap_node_new( FTC_Node *ftcanode,
FT_Pointer ftcquery,
FTC_Cache cache )
{
FTC_CMapNode *anode = (FTC_CMapNode*)ftcanode;
FTC_CMapQuery query = (FTC_CMapQuery)ftcquery;
FT_Error error;
FT_Memory memory = cache->memory;
FTC_CMapNode node = NULL;
FT_UInt nn;
if ( !FT_NEW( node ) )
{
node->face_id = query->face_id;
node->cmap_index = query->cmap_index;
node->first = (query->char_code / FTC_CMAP_INDICES_MAX) *
FTC_CMAP_INDICES_MAX;
for ( nn = 0; nn < FTC_CMAP_INDICES_MAX; nn++ )
node->indices[nn] = FTC_CMAP_UNKNOWN;
}
*anode = node;
return error;
}
/* compute the weight of a given cmap node */
FT_CALLBACK_DEF( FT_Offset )
ftc_cmap_node_weight( FTC_Node cnode,
FTC_Cache cache )
{
FT_UNUSED( cnode );
FT_UNUSED( cache );
return sizeof ( *cnode );
}
/* compare a cmap node to a given query */
FT_CALLBACK_DEF( FT_Bool )
ftc_cmap_node_compare( FTC_Node ftcnode,
FT_Pointer ftcquery,
FTC_Cache cache,
FT_Bool* list_changed )
{
FTC_CMapNode node = (FTC_CMapNode)ftcnode;
FTC_CMapQuery query = (FTC_CMapQuery)ftcquery;
FT_UNUSED( cache );
if ( list_changed )
*list_changed = FALSE;
if ( node->face_id == query->face_id &&
node->cmap_index == query->cmap_index )
{
FT_UInt32 offset = (FT_UInt32)( query->char_code - node->first );
return FT_BOOL( offset < FTC_CMAP_INDICES_MAX );
}
return 0;
}
FT_CALLBACK_DEF( FT_Bool )
ftc_cmap_node_remove_faceid( FTC_Node ftcnode,
FT_Pointer ftcface_id,
FTC_Cache cache,
FT_Bool* list_changed )
{
FTC_CMapNode node = (FTC_CMapNode)ftcnode;
FTC_FaceID face_id = (FTC_FaceID)ftcface_id;
FT_UNUSED( cache );
if ( list_changed )
*list_changed = FALSE;
return FT_BOOL( node->face_id == face_id );
}
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** GLYPH IMAGE CACHE *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
FT_CALLBACK_TABLE_DEF
const FTC_CacheClassRec ftc_cmap_cache_class =
{
ftc_cmap_node_new,
ftc_cmap_node_weight,
ftc_cmap_node_compare,
ftc_cmap_node_remove_faceid,
ftc_cmap_node_free,
sizeof ( FTC_CacheRec ),
ftc_cache_init,
ftc_cache_done,
};
/* documentation is in ftcache.h */
FT_EXPORT_DEF( FT_Error )
FTC_CMapCache_New( FTC_Manager manager,
FTC_CMapCache *acache )
{
return FTC_Manager_RegisterCache( manager,
&ftc_cmap_cache_class,
FTC_CACHE_P( acache ) );
}
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
/*
* Unfortunately, it is not possible to support binary backwards
* compatibility in the cmap cache. The FTC_CMapCache_Lookup signature
* changes were too deep, and there is no clever hackish way to detect
* what kind of structure we are being passed.
*
* On the other hand it seems that no production code is using this
* function on Unix distributions.
*/
#endif
/* documentation is in ftcache.h */
FT_EXPORT_DEF( FT_UInt )
FTC_CMapCache_Lookup( FTC_CMapCache cmap_cache,
FTC_FaceID face_id,
FT_Int cmap_index,
FT_UInt32 char_code )
{
FTC_Cache cache = FTC_CACHE( cmap_cache );
FTC_CMapQueryRec query;
FTC_Node node;
FT_Error error;
FT_UInt gindex = 0;
FT_PtrDist hash;
FT_Int no_cmap_change = 0;
if ( cmap_index < 0 )
{
/* Treat a negative cmap index as a special value, meaning that you */
/* don't want to change the FT_Face's character map through this */
/* call. This can be useful if the face requester callback already */
/* sets the face's charmap to the appropriate value. */
no_cmap_change = 1;
cmap_index = 0;
}
if ( !cache )
{
FT_TRACE0(( "FTC_CMapCache_Lookup: bad arguments, returning 0\n" ));
return 0;
}
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
/*
* If cmap_index is greater than the maximum number of cachable
* charmaps, we assume the request is from a legacy rogue client
* using old internal header. See include/config/ftoption.h.
*/
if ( cmap_index > FT_MAX_CHARMAP_CACHEABLE && !no_cmap_change )
{
FTC_OldCMapDesc desc = (FTC_OldCMapDesc) face_id;
char_code = (FT_UInt32)cmap_index;
query.face_id = desc->face_id;
switch ( desc->type )
{
case FTC_OLD_CMAP_BY_INDEX:
query.cmap_index = desc->u.index;
query.char_code = (FT_UInt32)cmap_index;
break;
case FTC_OLD_CMAP_BY_ENCODING:
{
FT_Face face;
error = FTC_Manager_LookupFace( cache->manager, desc->face_id,
&face );
if ( error )
return 0;
FT_Select_Charmap( face, desc->u.encoding );
return FT_Get_Char_Index( face, char_code );
}
default:
return 0;
}
}
else
#endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
{
query.face_id = face_id;
query.cmap_index = (FT_UInt)cmap_index;
query.char_code = char_code;
}
hash = FTC_CMAP_HASH( face_id, cmap_index, char_code );
#if 1
FTC_CACHE_LOOKUP_CMP( cache, ftc_cmap_node_compare, hash, &query,
node, error );
#else
error = FTC_Cache_Lookup( cache, hash, &query, &node );
#endif
if ( error )
goto Exit;
FT_ASSERT( (FT_UInt)( char_code - FTC_CMAP_NODE( node )->first ) <
FTC_CMAP_INDICES_MAX );
/* something rotten can happen with rogue clients */
if ( (FT_UInt)( char_code - FTC_CMAP_NODE( node )->first >=
FTC_CMAP_INDICES_MAX ) )
return 0; /* XXX: should return appropriate error */
gindex = FTC_CMAP_NODE( node )->indices[char_code -
FTC_CMAP_NODE( node )->first];
if ( gindex == FTC_CMAP_UNKNOWN )
{
FT_Face face;
gindex = 0;
error = FTC_Manager_LookupFace( cache->manager,
FTC_CMAP_NODE( node )->face_id,
&face );
if ( error )
goto Exit;
#ifdef FT_MAX_CHARMAP_CACHEABLE
/* something rotten can happen with rogue clients */
if ( cmap_index > FT_MAX_CHARMAP_CACHEABLE )
return 0; /* XXX: should return appropriate error */
#endif
if ( (FT_UInt)cmap_index < (FT_UInt)face->num_charmaps )
{
FT_CharMap old, cmap = NULL;
old = face->charmap;
cmap = face->charmaps[cmap_index];
if ( old != cmap && !no_cmap_change )
FT_Set_Charmap( face, cmap );
gindex = FT_Get_Char_Index( face, char_code );
if ( old != cmap && !no_cmap_change )
FT_Set_Charmap( face, old );
}
FTC_CMAP_NODE( node )->indices[char_code -
FTC_CMAP_NODE( node )->first]
= (FT_UShort)gindex;
}
Exit:
return gindex;
}
/* END */