hb-common.h revision 0a4399ca228d244e646abdb3487da0f13b228889 
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 _MSC_VER
31#define _HB__STR2__(x) #x
32#define _HB__STR1__(x) _HB__STR2__(x)
33#define _HB__LOC__ __FILE__ "("_HB__STR1__(__LINE__)") : Warning Msg: "
34#pragma message(_HB__LOC__"Not using stdint.h; integer types may have wrong size")
35typedef signed char int8_t;
36typedef unsigned char uint8_t;
37typedef signed short int16_t;
38typedef unsigned short uint16_t;
39typedef signed int int32_t;
40typedef unsigned int uint32_t;
41typedef signed long long int64_t;
42typedef unsigned long long uint64_t;
43#ifndef __cplusplus
44#define inline __inline
45#endif
46#else
47#include <stdint.h>
48#endif
49
50# ifdef __cplusplus
51#  define HB_BEGIN_DECLS	extern "C" {
52#  define HB_END_DECLS		}
53# else /* !__cplusplus */
54#  define HB_BEGIN_DECLS
55#  define HB_END_DECLS
56# endif /* !__cplusplus */
57
58typedef int hb_bool_t;
59
60typedef uint32_t hb_tag_t;
61#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))
62#define HB_TAG_STR(s)   (HB_TAG(((const char *) s)[0], \
63				((const char *) s)[1], \
64				((const char *) s)[2], \
65				((const char *) s)[3]))
66#define HB_TAG_NONE HB_TAG(0,0,0,0)
67
68typedef uint32_t hb_codepoint_t;
69typedef int32_t hb_position_t;
70typedef uint32_t hb_mask_t;
71
72typedef void (*hb_destroy_func_t) (void *user_data);
73
74typedef enum _hb_direction_t {
75  HB_DIRECTION_LTR,
76  HB_DIRECTION_RTL,
77  HB_DIRECTION_TTB,
78  HB_DIRECTION_BTT
79} hb_direction_t;
80
81#define HB_DIRECTION_IS_HORIZONTAL(dir)	((((unsigned int) (dir)) & ~1U) == 0)
82#define HB_DIRECTION_IS_VERTICAL(dir)	((((unsigned int) (dir)) & ~1U) == 2)
83#define HB_DIRECTION_IS_FORWARD(dir)	((((unsigned int) (dir)) & ~2U) == 0)
84#define HB_DIRECTION_IS_BACKWARD(dir)	((((unsigned int) (dir)) & ~2U) == 1)
85#define HB_DIRECTION_REVERSE(dir)	((hb_direction_t) (((unsigned int) (dir)) ^ 1))
86
87
88#endif /* HB_COMMON_H */
89