hb-common.h revision 4188096a7722f09ffa9319986c0286071da10a27 
1/*
2 * Copyright (C) 2007,2008,2009  Red Hat, Inc.
3 *
4 *  This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Red Hat Author(s): Behdad Esfahbod
25 */
26
27#ifndef HB_COMMON_H
28#define HB_COMMON_H
29
30# ifdef __cplusplus
31#  define HB_BEGIN_DECLS	extern "C" {
32#  define HB_END_DECLS		}
33# else /* !__cplusplus */
34#  define HB_BEGIN_DECLS
35#  define HB_END_DECLS
36# endif /* !__cplusplus */
37
38HB_BEGIN_DECLS
39
40
41#ifdef _MSC_VER
42typedef signed char int8_t;
43typedef unsigned char uint8_t;
44typedef signed short int16_t;
45typedef unsigned short uint16_t;
46typedef signed int int32_t;
47typedef unsigned int uint32_t;
48typedef signed long long int64_t;
49typedef unsigned long long uint64_t;
50#else
51#include <stdint.h>
52#endif
53
54typedef int hb_bool_t;
55
56typedef uint32_t hb_tag_t;
57#define HB_TAG(a,b,c,d) ((hb_tag_t)((((uint8_t)(a))<<24)|(((uint8_t)(b))<<16)|(((uint8_t)(c))<<8)|((uint8_t)(d))))
58
59#define HB_TAG_NONE HB_TAG(0,0,0,0)
60
61hb_tag_t hb_tag_from_string (const char *s);
62
63
64typedef uint32_t hb_codepoint_t;
65typedef int32_t hb_position_t;
66typedef uint32_t hb_mask_t;
67
68typedef void (*hb_destroy_func_t) (void *user_data);
69
70typedef enum _hb_direction_t {
71  HB_DIRECTION_INVALID = -1,
72  HB_DIRECTION_LTR = 0,
73  HB_DIRECTION_RTL,
74  HB_DIRECTION_TTB,
75  HB_DIRECTION_BTT
76} hb_direction_t;
77
78#define HB_DIRECTION_IS_HORIZONTAL(dir)	((((unsigned int) (dir)) & ~1U) == 0)
79#define HB_DIRECTION_IS_VERTICAL(dir)	((((unsigned int) (dir)) & ~1U) == 2)
80#define HB_DIRECTION_IS_FORWARD(dir)	((((unsigned int) (dir)) & ~2U) == 0)
81#define HB_DIRECTION_IS_BACKWARD(dir)	((((unsigned int) (dir)) & ~2U) == 1)
82#define HB_DIRECTION_REVERSE(dir)	((hb_direction_t) (((unsigned int) (dir)) ^ 1))
83
84
85typedef union _hb_var_int_t {
86  uint32_t u32;
87  int32_t i32;
88  uint16_t u16[2];
89  int16_t i16[2];
90  uint8_t u8[4];
91  int8_t i8[4];
92} hb_var_int_t;
93
94
95HB_END_DECLS
96
97#endif /* HB_COMMON_H */
98