2008-01-15 23:46:32 +01:00
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/*
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* Copyright (C) 1998-2004 David Turner and Werner Lemberg
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* Copyright (C) 2004,2007 Red Hat, Inc.
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2006-03-31 14:28:09 +02:00
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*
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2008-01-15 23:46:32 +01:00
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* This is part of HarfBuzz, an OpenType Layout engine library.
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2006-03-31 14:28:09 +02:00
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*
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2008-01-15 23:46:32 +01:00
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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2006-03-31 14:28:09 +02:00
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*
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2008-01-15 23:46:32 +01:00
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Owen Taylor, Behdad Esfahbod
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2006-03-31 14:28:09 +02:00
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*/
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2008-01-15 23:46:32 +01:00
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2009-05-20 11:42:12 +02:00
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#ifndef HB_BUFFER_H
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#define HB_BUFFER_H
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2006-03-31 14:28:09 +02:00
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2009-05-20 11:35:14 +02:00
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#include "hb-common.h"
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2006-03-31 14:28:09 +02:00
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2009-05-24 21:01:16 +02:00
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HB_BEGIN_DECLS
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2006-03-31 14:28:09 +02:00
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typedef struct HB_GlyphItemRec_ {
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2009-05-20 11:35:14 +02:00
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hb_codepoint_t gindex;
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unsigned int properties;
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unsigned int cluster;
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unsigned short component;
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unsigned short ligID;
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unsigned short gproperty;
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} HB_GlyphItemRec, *HB_GlyphItem;
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typedef struct HB_PositionRec_ {
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2009-05-20 11:35:14 +02:00
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hb_position_t x_pos;
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hb_position_t y_pos;
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hb_position_t x_advance;
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hb_position_t y_advance;
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unsigned short back; /* number of glyphs to go back
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for drawing current glyph */
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hb_bool_t new_advance; /* if set, the advance width values are
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absolute, i.e., they won't be
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added to the original glyph's value
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but rather replace them. */
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short cursive_chain; /* character to which this connects,
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may be positive or negative; used
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only internally */
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2006-03-31 14:28:09 +02:00
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} HB_PositionRec, *HB_Position;
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2009-05-20 11:35:14 +02:00
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typedef struct _hb_buffer_t {
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unsigned int allocated;
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2006-03-31 14:28:09 +02:00
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2009-05-20 11:35:14 +02:00
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unsigned int in_length;
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unsigned int out_length;
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unsigned int in_pos;
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unsigned int out_pos;
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2009-05-20 11:42:12 +02:00
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2009-05-20 11:35:14 +02:00
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hb_bool_t separate_out;
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2006-03-31 14:28:09 +02:00
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HB_GlyphItem in_string;
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HB_GlyphItem out_string;
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2007-10-11 02:07:58 +02:00
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HB_GlyphItem alt_string;
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2006-03-31 14:28:09 +02:00
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HB_Position positions;
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2009-05-20 11:35:14 +02:00
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unsigned int max_ligID;
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} HB_BufferRec, *HB_Buffer, hb_buffer_t;
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2006-03-31 14:28:09 +02:00
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2009-05-20 11:35:14 +02:00
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hb_buffer_t *
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hb_buffer_new (void);
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2006-03-31 14:28:09 +02:00
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2007-10-11 02:07:58 +02:00
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void
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2009-05-20 11:35:14 +02:00
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hb_buffer_free (hb_buffer_t *buffer);
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2006-03-31 14:28:09 +02:00
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2007-10-11 02:07:58 +02:00
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void
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2009-05-20 11:35:14 +02:00
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hb_buffer_clear (hb_buffer_t *buffer);
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2006-03-31 14:28:09 +02:00
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2009-05-20 11:35:14 +02:00
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void
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hb_buffer_add_glyph (hb_buffer_t *buffer,
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hb_codepoint_t glyph_index,
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unsigned int properties,
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unsigned int cluster);
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2006-03-31 14:28:09 +02:00
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2009-05-24 21:01:16 +02:00
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HB_END_DECLS
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2006-03-31 14:28:09 +02:00
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2009-05-20 11:42:12 +02:00
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#endif /* HB_BUFFER_H */
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