2 * Copyright (C) 2007,2008,2009 Red Hat, Inc.
4 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
24 * Red Hat Author(s): Behdad Esfahbod
27 #ifndef HB_OT_LAYOUT_PRIVATE_H
28 #define HB_OT_LAYOUT_PRIVATE_H
30 #include "hb-private.h"
32 #include "hb-ot-layout.h"
34 #include "hb-font-private.hh"
35 #include "hb-buffer-private.hh"
40 typedef unsigned int hb_ot_layout_class_t;
52 const struct GDEF *gdef;
53 const struct GSUB *gsub;
54 const struct GPOS *gpos;
58 unsigned char *klasses;
63 struct hb_ot_layout_context_t
72 unsigned int last; /* the last valid glyph--used with cursive positioning */
73 hb_position_t anchor_x; /* the coordinates of the anchor point */
74 hb_position_t anchor_y; /* of the last valid glyph */
78 /* Convert from font-space to user-space */
79 /* XXX div-by-zero / speed up */
80 inline hb_position_t scale_x (int16_t v) { return (int64_t) this->font->x_scale * v / this->face->head_table->unitsPerEm; }
81 inline hb_position_t scale_y (int16_t v) { return (int64_t) this->font->y_scale * v / this->face->head_table->unitsPerEm; }
85 HB_INTERNAL hb_ot_layout_t *
86 _hb_ot_layout_new (hb_face_t *face);
89 _hb_ot_layout_free (hb_ot_layout_t *layout);
97 _hb_ot_layout_has_new_glyph_classes (hb_face_t *face);
100 _hb_ot_layout_set_glyph_property (hb_face_t *face,
101 hb_codepoint_t glyph,
102 unsigned int property);
105 _hb_ot_layout_set_glyph_class (hb_face_t *face,
106 hb_codepoint_t glyph,
107 hb_ot_layout_glyph_class_t klass);
109 HB_INTERNAL hb_bool_t
110 _hb_ot_layout_check_glyph_property (hb_face_t *face,
111 hb_internal_glyph_info_t *ginfo,
112 unsigned int lookup_flags,
113 unsigned int *property);
115 HB_INTERNAL hb_bool_t
116 _hb_ot_layout_skip_mark (hb_face_t *face,
117 hb_internal_glyph_info_t *ginfo,
118 unsigned int lookup_flags,
119 unsigned int *property);
123 #endif /* HB_OT_LAYOUT_PRIVATE_H */