164 lines
3.6 KiB
C
164 lines
3.6 KiB
C
/****************************************************************************
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*
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* ftcimage.c
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*
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* FreeType Image cache (body).
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*
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* Copyright (C) 2000-2021 by
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* David Turner, Robert Wilhelm, and Werner Lemberg.
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*
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* This file is part of the FreeType project, and may only be used,
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* modified, and distributed under the terms of the FreeType project
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* license, LICENSE.TXT. By continuing to use, modify, or distribute
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* this file you indicate that you have read the license and
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* understand and accept it fully.
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*
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*/
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#include <freetype/ftcache.h>
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#include "ftcimage.h"
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#include <freetype/internal/ftmemory.h>
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#include <freetype/internal/ftobjs.h>
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#include "ftccback.h"
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#include "ftcerror.h"
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/* finalize a given glyph image node */
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FT_LOCAL_DEF( void )
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ftc_inode_free( FTC_Node ftcinode,
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FTC_Cache cache )
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{
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FTC_INode inode = (FTC_INode)ftcinode;
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FT_Memory memory = cache->memory;
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if ( inode->glyph )
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{
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FT_Done_Glyph( inode->glyph );
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inode->glyph = NULL;
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}
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FTC_GNode_Done( FTC_GNODE( inode ), cache );
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FT_FREE( inode );
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}
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FT_LOCAL_DEF( void )
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FTC_INode_Free( FTC_INode inode,
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FTC_Cache cache )
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{
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ftc_inode_free( FTC_NODE( inode ), cache );
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}
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/* initialize a new glyph image node */
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FT_LOCAL_DEF( FT_Error )
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FTC_INode_New( FTC_INode *pinode,
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FTC_GQuery gquery,
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FTC_Cache cache )
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{
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FT_Memory memory = cache->memory;
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FT_Error error;
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FTC_INode inode = NULL;
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if ( !FT_NEW( inode ) )
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{
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FTC_GNode gnode = FTC_GNODE( inode );
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FTC_Family family = gquery->family;
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FT_UInt gindex = gquery->gindex;
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FTC_IFamilyClass clazz = FTC_CACHE_IFAMILY_CLASS( cache );
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/* initialize its inner fields */
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FTC_GNode_Init( gnode, gindex, family );
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/* we will now load the glyph image */
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error = clazz->family_load_glyph( family, gindex, cache,
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&inode->glyph );
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if ( error )
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{
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FTC_INode_Free( inode, cache );
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inode = NULL;
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}
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}
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*pinode = inode;
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return error;
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}
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FT_LOCAL_DEF( FT_Error )
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ftc_inode_new( FTC_Node *ftcpinode,
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FT_Pointer ftcgquery,
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FTC_Cache cache )
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{
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FTC_INode *pinode = (FTC_INode*)ftcpinode;
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FTC_GQuery gquery = (FTC_GQuery)ftcgquery;
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return FTC_INode_New( pinode, gquery, cache );
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}
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FT_LOCAL_DEF( FT_Offset )
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ftc_inode_weight( FTC_Node ftcinode,
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FTC_Cache ftccache )
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{
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FTC_INode inode = (FTC_INode)ftcinode;
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FT_Offset size = 0;
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FT_Glyph glyph = inode->glyph;
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FT_UNUSED( ftccache );
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switch ( glyph->format )
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{
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case FT_GLYPH_FORMAT_BITMAP:
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{
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FT_BitmapGlyph bitg;
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bitg = (FT_BitmapGlyph)glyph;
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size = bitg->bitmap.rows * (FT_Offset)FT_ABS( bitg->bitmap.pitch ) +
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sizeof ( *bitg );
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}
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break;
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case FT_GLYPH_FORMAT_OUTLINE:
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{
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FT_OutlineGlyph outg;
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outg = (FT_OutlineGlyph)glyph;
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size = (FT_Offset)outg->outline.n_points *
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( sizeof ( FT_Vector ) + sizeof ( FT_Byte ) ) +
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(FT_Offset)outg->outline.n_contours * sizeof ( FT_Short ) +
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sizeof ( *outg );
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}
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break;
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default:
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;
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}
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size += sizeof ( *inode );
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return size;
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}
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#if 0
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FT_LOCAL_DEF( FT_Offset )
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FTC_INode_Weight( FTC_INode inode )
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{
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return ftc_inode_weight( FTC_NODE( inode ), NULL );
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}
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#endif /* 0 */
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/* END */
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