blob: 65cc2f6152df903e7153a4d581e70aec0fd28481 [file] [log] [blame]
/****************************************************************************
*
* ftcimage.c
*
* FreeType Image cache (body).
*
* Copyright (C) 2000-2020 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 <freetype/ftcache.h>
#include "ftcimage.h"
#include <freetype/internal/ftmemory.h>
#include <freetype/internal/ftobjs.h>
#include "ftccback.h"
#include "ftcerror.h"
/* finalize a given glyph image node */
FT_LOCAL_DEF( void )
ftc_inode_free( FTC_Node ftcinode,
FTC_Cache cache )
{
FTC_INode inode = (FTC_INode)ftcinode;
FT_Memory memory = cache->memory;
if ( inode->glyph )
{
FT_Done_Glyph( inode->glyph );
inode->glyph = NULL;
}
FTC_GNode_Done( FTC_GNODE( inode ), cache );
FT_FREE( inode );
}
FT_LOCAL_DEF( void )
FTC_INode_Free( FTC_INode inode,
FTC_Cache cache )
{
ftc_inode_free( FTC_NODE( inode ), cache );
}
/* initialize a new glyph image node */
FT_LOCAL_DEF( FT_Error )
FTC_INode_New( FTC_INode *pinode,
FTC_GQuery gquery,
FTC_Cache cache )
{
FT_Memory memory = cache->memory;
FT_Error error;
FTC_INode inode = NULL;
if ( !FT_NEW( inode ) )
{
FTC_GNode gnode = FTC_GNODE( inode );
FTC_Family family = gquery->family;
FT_UInt gindex = gquery->gindex;
FTC_IFamilyClass clazz = FTC_CACHE_IFAMILY_CLASS( cache );
/* initialize its inner fields */
FTC_GNode_Init( gnode, gindex, family );
/* we will now load the glyph image */
error = clazz->family_load_glyph( family, gindex, cache,
&inode->glyph );
if ( error )
{
FTC_INode_Free( inode, cache );
inode = NULL;
}
}
*pinode = inode;
return error;
}
FT_LOCAL_DEF( FT_Error )
ftc_inode_new( FTC_Node *ftcpinode,
FT_Pointer ftcgquery,
FTC_Cache cache )
{
FTC_INode *pinode = (FTC_INode*)ftcpinode;
FTC_GQuery gquery = (FTC_GQuery)ftcgquery;
return FTC_INode_New( pinode, gquery, cache );
}
FT_LOCAL_DEF( FT_Offset )
ftc_inode_weight( FTC_Node ftcinode,
FTC_Cache ftccache )
{
FTC_INode inode = (FTC_INode)ftcinode;
FT_Offset size = 0;
FT_Glyph glyph = inode->glyph;
FT_UNUSED( ftccache );
switch ( glyph->format )
{
case FT_GLYPH_FORMAT_BITMAP:
{
FT_BitmapGlyph bitg;
bitg = (FT_BitmapGlyph)glyph;
size = bitg->bitmap.rows * (FT_Offset)FT_ABS( bitg->bitmap.pitch ) +
sizeof ( *bitg );
}
break;
case FT_GLYPH_FORMAT_OUTLINE:
{
FT_OutlineGlyph outg;
outg = (FT_OutlineGlyph)glyph;
size = (FT_Offset)outg->outline.n_points *
( sizeof ( FT_Vector ) + sizeof ( FT_Byte ) ) +
(FT_Offset)outg->outline.n_contours * sizeof ( FT_Short ) +
sizeof ( *outg );
}
break;
default:
;
}
size += sizeof ( *inode );
return size;
}
#if 0
FT_LOCAL_DEF( FT_Offset )
FTC_INode_Weight( FTC_INode inode )
{
return ftc_inode_weight( FTC_NODE( inode ), NULL );
}
#endif /* 0 */
/* END */