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android / platform / external / harfbuzz_ng / 88a5f5a49b6809d88560791f9cf6b8f78f22a4ad / . / src / hb-buffer.h
blob: 4e130883b07b196373b90f2b1fcb0f386d8f0939 [file] [log] [blame]
Behdad Esfahboda2a9a022008-01-15 22:46:32 +0000[diff] [blame]1/*
2 * Copyright (C) 1998-2004 David Turner and Werner Lemberg
Behdad Esfahbod6c786832009-05-25 03:22:19 -0400[diff] [blame]3 * Copyright (C) 2004,2007,2009 Red Hat, Inc.
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]4 *
Behdad Esfahboda2a9a022008-01-15 22:46:32 +0000[diff] [blame]5 * This is part of HarfBuzz, an OpenType Layout engine library.
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]6 *
Behdad Esfahboda2a9a022008-01-15 22:46:32 +0000[diff] [blame]7 * Permission is hereby granted, without written agreement and without
8 * license or royalty fees, to use, copy, modify, and distribute this
9 * software and its documentation for any purpose, provided that the
10 * above copyright notice and the following two paragraphs appear in
11 * all copies of this software.
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]12 *
Behdad Esfahboda2a9a022008-01-15 22:46:32 +0000[diff] [blame]13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
17 * DAMAGE.
18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 *
25 * Red Hat Author(s): Owen Taylor, Behdad Esfahbod
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]26 */
Behdad Esfahboda2a9a022008-01-15 22:46:32 +0000[diff] [blame]27
Behdad Esfahbod5c0adce2009-05-20 05:42:12 -0400[diff] [blame]28#ifndef HB_BUFFER_H
29#define HB_BUFFER_H
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]30
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]31#include "hb-common.h"
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]32
Behdad Esfahbodf96ffd42009-05-24 15:01:16 -0400[diff] [blame]33HB_BEGIN_DECLS
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]34
Behdad Esfahbodd9d2a072009-05-25 03:24:19 -0400[diff] [blame]35/* XXX Hide structs? */
36
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]37typedef struct HB_GlyphItemRec_ {
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]38 hb_codepoint_t gindex;
39 unsigned int properties;
40 unsigned int cluster;
41 unsigned short component;
42 unsigned short ligID;
43 unsigned short gproperty;
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]44} HB_GlyphItemRec, *HB_GlyphItem;
45
46typedef struct HB_PositionRec_ {
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]47 hb_position_t x_pos;
48 hb_position_t y_pos;
49 hb_position_t x_advance;
50 hb_position_t y_advance;
51 unsigned short back; /* number of glyphs to go back
52 for drawing current glyph */
53 hb_bool_t new_advance; /* if set, the advance width values are
54 absolute, i.e., they won't be
55 added to the original glyph's value
56 but rather replace them. */
57 short cursive_chain; /* character to which this connects,
58 may be positive or negative; used
59 only internally */
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]60} HB_PositionRec, *HB_Position;
61
62
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]63typedef struct _hb_buffer_t {
64 unsigned int allocated;
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]65
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]66 unsigned int in_length;
67 unsigned int out_length;
68 unsigned int in_pos;
69 unsigned int out_pos;
Behdad Esfahbod5c0adce2009-05-20 05:42:12 -0400[diff] [blame]70
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]71 hb_bool_t separate_out;
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]72 HB_GlyphItem in_string;
73 HB_GlyphItem out_string;
Behdad Esfahboda8abb8b2007-10-11 00:07:58 +0000[diff] [blame]74 HB_GlyphItem alt_string;
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]75 HB_Position positions;
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]76 unsigned int max_ligID;
77} HB_BufferRec, *HB_Buffer, hb_buffer_t;
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]78
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]79hb_buffer_t *
80hb_buffer_new (void);
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]81
Behdad Esfahboda8abb8b2007-10-11 00:07:58 +0000[diff] [blame]82void
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]83hb_buffer_free (hb_buffer_t *buffer);
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]84
Behdad Esfahboda8abb8b2007-10-11 00:07:58 +0000[diff] [blame]85void
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]86hb_buffer_clear (hb_buffer_t *buffer);
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]87
Behdad Esfahbodb857b492009-05-20 05:35:14 -0400[diff] [blame]88void
89hb_buffer_add_glyph (hb_buffer_t *buffer,
90 hb_codepoint_t glyph_index,
91 unsigned int properties,
92 unsigned int cluster);
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]93
Behdad Esfahbodf96ffd42009-05-24 15:01:16 -0400[diff] [blame]94HB_END_DECLS
Behdad Esfahbod9f8da382006-03-31 12:28:09 +0000[diff] [blame]95
Behdad Esfahbod5c0adce2009-05-20 05:42:12 -0400[diff] [blame]96#endif /* HB_BUFFER_H */