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/*
* Copyright (C) 1998-2004 David Turner and Werner Lemberg
* Copyright (C) 2004,2007,2009 Red Hat, 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): Owen Taylor, Behdad Esfahbod
*/
#ifndef HB_BUFFER_H
#define HB_BUFFER_H
#include "hb-common.h"
#include "hb-unicode.h"
#include "hb-language.h"
HB_BEGIN_DECLS
typedef struct _hb_buffer_t hb_buffer_t;
typedef struct _hb_glyph_info_t {
hb_codepoint_t codepoint;
hb_mask_t mask;
uint32_t cluster;
uint32_t internal1;
uint32_t internal2;
} hb_glyph_info_t;
typedef struct _hb_glyph_position_t {
hb_position_t x_advance;
hb_position_t y_advance;
hb_position_t x_offset;
hb_position_t y_offset;
uint32_t internal;
} hb_glyph_position_t;
hb_buffer_t *
hb_buffer_create (unsigned int pre_alloc_size);
hb_buffer_t *
hb_buffer_reference (hb_buffer_t *buffer);
unsigned int
hb_buffer_get_reference_count (hb_buffer_t *buffer);
void
hb_buffer_destroy (hb_buffer_t *buffer);
void
hb_buffer_set_unicode_funcs (hb_buffer_t *buffer,
hb_unicode_funcs_t *unicode_funcs);
hb_unicode_funcs_t *
hb_buffer_get_unicode_funcs (hb_buffer_t *buffer);
void
hb_buffer_set_direction (hb_buffer_t *buffer,
hb_direction_t direction);
hb_direction_t
hb_buffer_get_direction (hb_buffer_t *buffer);
void
hb_buffer_set_script (hb_buffer_t *buffer,
hb_script_t script);
hb_script_t
hb_buffer_get_script (hb_buffer_t *buffer);
void
hb_buffer_set_language (hb_buffer_t *buffer,
hb_language_t language);
hb_language_t
hb_buffer_get_language (hb_buffer_t *buffer);
void
hb_buffer_clear (hb_buffer_t *buffer);
void
hb_buffer_clear_positions (hb_buffer_t *buffer);
hb_bool_t
hb_buffer_ensure (hb_buffer_t *buffer,
unsigned int size);
void
hb_buffer_reverse (hb_buffer_t *buffer);
void
hb_buffer_reverse_clusters (hb_buffer_t *buffer);
/* Filling the buffer in */
void
hb_buffer_add_glyph (hb_buffer_t *buffer,
hb_codepoint_t codepoint,
hb_mask_t mask,
unsigned int cluster);
void
hb_buffer_add_utf8 (hb_buffer_t *buffer,
const char *text,
unsigned int text_length,
unsigned int item_offset,
unsigned int item_length);
void
hb_buffer_add_utf16 (hb_buffer_t *buffer,
const uint16_t *text,
unsigned int text_length,
unsigned int item_offset,
unsigned int item_length);
void
hb_buffer_add_utf32 (hb_buffer_t *buffer,
const uint32_t *text,
unsigned int text_length,
unsigned int item_offset,
unsigned int item_length);
/* Getting glyphs out of the buffer */
/* Return value valid as long as buffer not modified */
unsigned int
hb_buffer_get_length (hb_buffer_t *buffer);
/* Return value valid as long as buffer not modified */
hb_glyph_info_t *
hb_buffer_get_glyph_infos (hb_buffer_t *buffer);
/* Return value valid as long as buffer not modified */
hb_glyph_position_t *
hb_buffer_get_glyph_positions (hb_buffer_t *buffer);
HB_END_DECLS
#endif /* HB_BUFFER_H */
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