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/*
* Copyright © 2017 Google, Inc.
*
* This is part of HarfBuzz, a text shaping 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_H_IN
#error "Include <hb-ot.h> instead."
#endif
#ifndef HB_OT_VAR_H
#define HB_OT_VAR_H
#include "hb.h"
HB_BEGIN_DECLS
#define HB_OT_TAG_VAR_AXIS_ITALIC HB_TAG('i','t','a','l')
#define HB_OT_TAG_VAR_AXIS_OPTICAL_SIZE HB_TAG('o','p','s','z')
#define HB_OT_TAG_VAR_AXIS_SLANT HB_TAG('s','l','n','t')
#define HB_OT_TAG_VAR_AXIS_WIDTH HB_TAG('w','d','t','h')
#define HB_OT_TAG_VAR_AXIS_WEIGHT HB_TAG('w','g','h','t')
/*
* fvar / avar
*/
/**
* hb_ot_var_axis_t:
*
* Since: 1.4.2
*/
typedef struct hb_ot_var_axis_t {
hb_tag_t tag;
unsigned int name_id;
float min_value;
float default_value;
float max_value;
} hb_ot_var_axis_t;
HB_EXTERN hb_bool_t
hb_ot_var_has_data (hb_face_t *face);
/**
* HB_OT_VAR_NO_AXIS_INDEX:
*
* Since: 1.4.2
*/
#define HB_OT_VAR_NO_AXIS_INDEX 0xFFFFFFFFu
HB_EXTERN unsigned int
hb_ot_var_get_axis_count (hb_face_t *face);
HB_EXTERN unsigned int
hb_ot_var_get_axes (hb_face_t *face,
unsigned int start_offset,
unsigned int *axes_count /* IN/OUT */,
hb_ot_var_axis_t *axes_array /* OUT */);
HB_EXTERN hb_bool_t
hb_ot_var_find_axis (hb_face_t *face,
hb_tag_t axis_tag,
unsigned int *axis_index,
hb_ot_var_axis_t *axis_info);
HB_EXTERN void
hb_ot_var_normalize_variations (hb_face_t *face,
const hb_variation_t *variations, /* IN */
unsigned int variations_length,
int *coords, /* OUT */
unsigned int coords_length);
HB_EXTERN void
hb_ot_var_normalize_coords (hb_face_t *face,
unsigned int coords_length,
const float *design_coords, /* IN */
int *normalized_coords /* OUT */);
HB_END_DECLS
#endif /* HB_OT_VAR_H */
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