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/*
* Copyright (C) 2007,2008,2009 Red Hat, Inc.
*
* This is part of HarfBuzz, an OpenType Layout engine library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Red Hat Author(s): Behdad Esfahbod
*/
#ifndef HB_OT_LAYOUT_PRIVATE_H
#define HB_OT_LAYOUT_PRIVATE_H
#include "hb-private.h"
#include "hb-ot-layout.h"
#include "hb-font.h"
#include "hb-buffer-private.h"
HB_BEGIN_DECLS
typedef unsigned int hb_ot_layout_class_t;
/*
* hb_ot_layout_t
*/
typedef struct _hb_ot_layout_t hb_ot_layout_t;
struct _hb_ot_layout_t
{
hb_blob_t *gdef_blob;
hb_blob_t *gsub_blob;
hb_blob_t *gpos_blob;
const struct GDEF *gdef;
const struct GSUB *gsub;
const struct GPOS *gpos;
struct
{
unsigned char *klasses;
unsigned int len;
} new_gdef;
};
typedef struct _hb_ot_layout_context_t hb_ot_layout_context_t;
struct _hb_ot_layout_context_t
{
hb_face_t *face;
hb_font_t *font;
union info_t
{
struct gpos_t
{
unsigned int last; /* the last valid glyph--used with cursive positioning */
hb_position_t anchor_x; /* the coordinates of the anchor point */
hb_position_t anchor_y; /* of the last valid glyph */
} gpos;
} info;
};
void
_hb_ot_layout_init (hb_face_t *face);
void
_hb_ot_layout_fini (hb_face_t *face);
/*
* GDEF
*/
HB_INTERNAL hb_bool_t
_hb_ot_layout_has_new_glyph_classes (hb_face_t *face);
HB_INTERNAL void
_hb_ot_layout_set_glyph_property (hb_face_t *face,
hb_codepoint_t glyph,
unsigned int property);
HB_INTERNAL void
_hb_ot_layout_set_glyph_class (hb_face_t *face,
hb_codepoint_t glyph,
hb_ot_layout_glyph_class_t klass);
HB_INTERNAL hb_bool_t
_hb_ot_layout_check_glyph_property (hb_face_t *face,
hb_internal_glyph_info_t *ginfo,
unsigned int lookup_flags,
unsigned int *property);
HB_INTERNAL hb_bool_t
_hb_ot_layout_skip_mark (hb_face_t *face,
hb_internal_glyph_info_t *ginfo,
unsigned int lookup_flags,
unsigned int *property);
HB_END_DECLS
#endif /* HB_OT_LAYOUT_PRIVATE_H */
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