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1 /****************************************************************************
2  *
3  * afloader.h
4  *
5  *   Auto-fitter glyph loading routines (specification).
6  *
7  * Copyright 2003-2018 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 #ifndef AFLOADER_H_
20 #define AFLOADER_H_
21 
22 #include "afhints.h"
23 #include "afmodule.h"
24 #include "afglobal.h"
25 
26 
27 FT_BEGIN_HEADER
28 
29   /*
30    * The autofitter module's (global) data structure to communicate with
31    * actual fonts.  If necessary, `local' data like the current face, the
32    * current face's auto-hint data, or the current glyph's parameters
33    * relevant to auto-hinting are `swapped in'.  Cf. functions like
34    * `af_loader_reset' and `af_loader_load_g'.
35    */
36 
37   typedef struct  AF_LoaderRec_
38   {
39     /* current face data */
40     FT_Face           face;
41     AF_FaceGlobals    globals;
42 
43     /* current glyph data */
44     AF_GlyphHints     hints;
45     AF_StyleMetrics   metrics;
46     FT_Bool           transformed;
47     FT_Matrix         trans_matrix;
48     FT_Vector         trans_delta;
49     FT_Vector         pp1;
50     FT_Vector         pp2;
51     /* we don't handle vertical phantom points */
52 
53   } AF_LoaderRec, *AF_Loader;
54 
55 
56   FT_LOCAL( void )
57   af_loader_init( AF_Loader      loader,
58                   AF_GlyphHints  hints );
59 
60 
61   FT_LOCAL( FT_Error )
62   af_loader_reset( AF_Loader  loader,
63                    AF_Module  module,
64                    FT_Face    face );
65 
66 
67   FT_LOCAL( void )
68   af_loader_done( AF_Loader  loader );
69 
70 
71   FT_LOCAL( FT_Error )
72   af_loader_load_glyph( AF_Loader  loader,
73                         AF_Module  module,
74                         FT_Face    face,
75                         FT_UInt    gindex,
76                         FT_Int32   load_flags );
77 
78   FT_LOCAL_DEF( FT_Int32 )
79   af_loader_compute_darkening( AF_Loader  loader,
80                                FT_Face    face,
81                                FT_Pos     standard_width );
82 
83 /* */
84 
85 
86 FT_END_HEADER
87 
88 #endif /* AFLOADER_H_ */
89 
90 
91 /* END */
92