src/hb-ot-layout-private.hh

   1 /*
   2  * Copyright © 2007,2008,2009  Red Hat, Inc.
   3  *
   4  *  This is part of HarfBuzz, a text shaping 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_HH
  28 #define HB_OT_LAYOUT_PRIVATE_HH
  29
  30 #include "hb-private.hh"
  31
  32 #include "hb-ot-layout.h"
  33
  34 #include "hb-font-private.hh"
  35 #include "hb-buffer-private.hh"
  36 #include "hb-ot-shape-complex-private.hh"
  37
  38
  39
  40 /*
  41  * GDEF
  42  */
  43
  44 /* XXX cleanup */
  45 typedef enum {
  46   HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED = 0x0001,
  47   HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH   = 0x0002,
  48   HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE     = 0x0004,
  49   HB_OT_LAYOUT_GLYPH_CLASS_MARK         = 0x0008,
  50   HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT    = 0x0010
  51 } hb_ot_layout_glyph_class_t;
  52
  53
  54 HB_INTERNAL unsigned int
  55 _hb_ot_layout_get_glyph_property (hb_face_t       *face,
  56                                   hb_glyph_info_t *info);
  57
  58 HB_INTERNAL hb_bool_t
  59 _hb_ot_layout_check_glyph_property (hb_face_t    *face,
  60                                     hb_glyph_info_t *ginfo,
  61                                     unsigned int  lookup_props,
  62                                     unsigned int *property_out);
  63
  64 HB_INTERNAL hb_bool_t
  65 _hb_ot_layout_skip_mark (hb_face_t    *face,
  66                          hb_glyph_info_t *ginfo,
  67                          unsigned int  lookup_props,
  68                          unsigned int *property_out);
  69
  70
  71
  72 /*
  73  * hb_ot_layout_t
  74  */
  75
  76 struct hb_ot_layout_t
  77 {
  78   hb_blob_t *gdef_blob;
  79   hb_blob_t *gsub_blob;
  80   hb_blob_t *gpos_blob;
  81
  82   const struct GDEF *gdef;
  83   const struct GSUB *gsub;
  84   const struct GPOS *gpos;
  85 };
  86
  87
  88 HB_INTERNAL hb_ot_layout_t *
  89 _hb_ot_layout_create (hb_face_t *face);
  90
  91 HB_INTERNAL void
  92 _hb_ot_layout_destroy (hb_ot_layout_t *layout);
  93
  94
  95
  96 #endif /* HB_OT_LAYOUT_PRIVATE_HH */