harfbuzz/src/hb-ot-layout.h

/*
 * Copyright (C) 2007,2008  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_H
#define HB_OT_LAYOUT_H

#include "hb-common.h"

HB_BEGIN_DECLS();

/*
 * hb_ot_layout_t
 */

typedef struct _hb_ot_layout_t hb_ot_layout_t;

hb_ot_layout_t *
hb_ot_layout_create_for_data (const char *font_data,
			      int         face_index);

void
hb_ot_layout_destroy (hb_ot_layout_t *layout);

/* TODO sanitizing API/constructor (make_wrieable_func_t) */
/* TODO get_table_func_t constructor */

/*
 * GDEF
 */

typedef enum {
  HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED	= 0x0000,
  HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH	= 0x0002,
  HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE	= 0x0004,
  HB_OT_LAYOUT_GLYPH_CLASS_MARK		= 0x0008,
  HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT	= 0x0010
} hb_ot_layout_glyph_class_t;

hb_bool_t
hb_ot_layout_has_font_glyph_classes (hb_ot_layout_t *layout);

hb_ot_layout_glyph_class_t
hb_ot_layout_get_glyph_class (hb_ot_layout_t *layout,
			      hb_glyph_t      glyph);

void
hb_ot_layout_set_glyph_class (hb_ot_layout_t            *layout,
			      hb_glyph_t                 glyph,
			      hb_ot_layout_glyph_class_t klass);

void
hb_ot_layout_build_glyph_classes (hb_ot_layout_t *layout,
				  uint16_t        num_total_glyphs,
				  hb_glyph_t     *glyphs,
				  unsigned char  *klasses,
				  uint16_t        count);

HB_END_DECLS();

#endif /* HB_OT_LAYOUT_H */