hb-ot-layout-private.hh revision 4189b92aaa41e4a1756c561cc6e08b0ed024afda 
1/*
2 * Copyright (C) 2007,2008,2009  Red Hat, Inc.
3 *
4 *  This is part of HarfBuzz, an OpenType Layout engine library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Red Hat Author(s): Behdad Esfahbod
25 */
26
27#ifndef HB_OT_LAYOUT_PRIVATE_H
28#define HB_OT_LAYOUT_PRIVATE_H
29
30#include "hb-private.h"
31#include "hb-ot-layout.h"
32
33/* XXX */
34#include "hb-buffer.h"
35
36
37typedef unsigned int hb_ot_layout_class_t;
38
39struct _hb_ot_layout_t
40{
41  const struct GDEF *gdef;
42  const struct GSUB *gsub;
43  const struct GPOS *gpos;
44
45  struct
46  {
47    unsigned char *klasses;
48    unsigned int len;
49  } new_gdef;
50
51  /* TODO full-matrix transformation? */
52  struct gpos_info_t
53  {
54    unsigned int x_ppem, y_ppem;
55    hb_16dot16_t x_scale, y_scale;
56
57    hb_bool_t dvi;
58    hb_bool_t r2l;
59
60    unsigned int last;        /* the last valid glyph--used with cursive positioning */
61    hb_position_t anchor_x;   /* the coordinates of the anchor point */
62    hb_position_t anchor_y;   /* of the last valid glyph */
63  } gpos_info;
64};
65
66
67HB_BEGIN_DECLS
68
69/*
70 * GDEF
71 */
72
73HB_INTERNAL hb_bool_t
74_hb_ot_layout_has_new_glyph_classes (hb_ot_layout_t *layout);
75
76HB_INTERNAL unsigned int
77_hb_ot_layout_get_glyph_property (hb_ot_layout_t *layout,
78				  hb_codepoint_t  glyph);
79
80HB_INTERNAL void
81_hb_ot_layout_set_glyph_property (hb_ot_layout_t *layout,
82				  hb_codepoint_t  glyph,
83				  unsigned int    property);
84
85HB_INTERNAL hb_bool_t
86_hb_ot_layout_check_glyph_property (hb_ot_layout_t  *layout,
87				    hb_glyph_info_t *ginfo,
88				    unsigned int     lookup_flags,
89				    unsigned int    *property);
90
91HB_INTERNAL hb_bool_t
92_hb_ot_layout_skip_mark (hb_ot_layout_t  *layout,
93			  hb_glyph_info_t *ginfo,
94			  unsigned int     lookup_flags,
95			  unsigned int    *property);
96
97HB_END_DECLS
98
99#endif /* HB_OT_LAYOUT_PRIVATE_H */
100