thirdparty/freetype-2.3.12/src/cache/ftcimage.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  ftcimage.c                                                             */
   4 /*                                                                         */
   5 /*    FreeType Image cache (body).                                         */
   6 /*                                                                         */
   7 /*  Copyright 2000-2001, 2003, 2004, 2006 by                               */
   8 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
   9 /*                                                                         */
  10 /*  This file is part of the FreeType project, and may only be used,       */
  11 /*  modified, and distributed under the terms of the FreeType project      */
  12 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  13 /*  this file you indicate that you have read the license and              */
  14 /*  understand and accept it fully.                                        */
  15 /*                                                                         */
  16 /***************************************************************************/
  17
  18
  19 #include <ft2build.h>
  20 #include FT_CACHE_H
  21 #include "ftcimage.h"
  22 #include FT_INTERNAL_MEMORY_H
  23
  24 #include "ftccback.h"
  25 #include "ftcerror.h"
  26
  27
  28   /* finalize a given glyph image node */
  29   FT_LOCAL_DEF( void )
  30   ftc_inode_free( FTC_Node   ftcinode,
  31                   FTC_Cache  cache )
  32   {
  33     FTC_INode  inode = (FTC_INode)ftcinode;
  34     FT_Memory  memory = cache->memory;
  35
  36
  37     if ( inode->glyph )
  38     {
  39       FT_Done_Glyph( inode->glyph );
  40       inode->glyph = NULL;
  41     }
  42
  43     FTC_GNode_Done( FTC_GNODE( inode ), cache );
  44     FT_FREE( inode );
  45   }
  46
  47
  48   FT_LOCAL_DEF( void )
  49   FTC_INode_Free( FTC_INode  inode,
  50                   FTC_Cache  cache )
  51   {
  52     ftc_inode_free( FTC_NODE( inode ), cache );
  53   }
  54
  55
  56   /* initialize a new glyph image node */
  57   FT_LOCAL_DEF( FT_Error )
  58   FTC_INode_New( FTC_INode   *pinode,
  59                  FTC_GQuery   gquery,
  60                  FTC_Cache    cache )
  61   {
  62     FT_Memory  memory = cache->memory;
  63     FT_Error   error;
  64     FTC_INode  inode;
  65
  66
  67     if ( !FT_NEW( inode ) )
  68     {
  69       FTC_GNode         gnode  = FTC_GNODE( inode );
  70       FTC_Family        family = gquery->family;
  71       FT_UInt           gindex = gquery->gindex;
  72       FTC_IFamilyClass  clazz  = FTC_CACHE__IFAMILY_CLASS( cache );
  73
  74
  75       /* initialize its inner fields */
  76       FTC_GNode_Init( gnode, gindex, family );
  77
  78       /* we will now load the glyph image */
  79       error = clazz->family_load_glyph( family, gindex, cache,
  80                                         &inode->glyph );
  81       if ( error )
  82       {
  83         FTC_INode_Free( inode, cache );
  84         inode = NULL;
  85       }
  86     }
  87
  88     *pinode = inode;
  89     return error;
  90   }
  91
  92
  93   FT_LOCAL_DEF( FT_Error )
  94   ftc_inode_new( FTC_Node   *ftcpinode,
  95                  FT_Pointer  ftcgquery,
  96                  FTC_Cache   cache )
  97   {
  98     FTC_INode  *pinode = (FTC_INode*)ftcpinode;
  99     FTC_GQuery  gquery = (FTC_GQuery)ftcgquery;
 100
 101
 102     return FTC_INode_New( pinode, gquery, cache );
 103   }
 104
 105
 106   FT_LOCAL_DEF( FT_Offset )
 107   ftc_inode_weight( FTC_Node   ftcinode,
 108                     FTC_Cache  ftccache )
 109   {
 110     FTC_INode  inode = (FTC_INode)ftcinode;
 111     FT_Offset  size  = 0;
 112     FT_Glyph   glyph = inode->glyph;
 113
 114     FT_UNUSED( ftccache );
 115
 116
 117     switch ( glyph->format )
 118     {
 119     case FT_GLYPH_FORMAT_BITMAP:
 120       {
 121         FT_BitmapGlyph  bitg;
 122
 123
 124         bitg = (FT_BitmapGlyph)glyph;
 125         size = bitg->bitmap.rows * ft_labs( bitg->bitmap.pitch ) +
 126                sizeof ( *bitg );
 127       }
 128       break;
 129
 130     case FT_GLYPH_FORMAT_OUTLINE:
 131       {
 132         FT_OutlineGlyph  outg;
 133
 134
 135         outg = (FT_OutlineGlyph)glyph;
 136         size = outg->outline.n_points *
 137                  ( sizeof ( FT_Vector ) + sizeof ( FT_Byte ) ) +
 138                outg->outline.n_contours * sizeof ( FT_Short ) +
 139                sizeof ( *outg );
 140       }
 141       break;
 142
 143     default:
 144       ;
 145     }
 146
 147     size += sizeof ( *inode );
 148     return size;
 149   }
 150
 151
 152 #if 0
 153
 154   FT_LOCAL_DEF( FT_Offset )
 155   FTC_INode_Weight( FTC_INode  inode )
 156   {
 157     return ftc_inode_weight( FTC_NODE( inode ), NULL );
 158   }
 159
 160 #endif /* 0 */
 161
 162
 163 /* END */