source: mainline/uspace/srv/hid/input/layout.h@ fa942bc

topic/simplify-dev-export
Last change on this file since fa942bc was 28a5ebd, checked in by Martin Decky <martin@…>, 5 years ago

Use char32_t instead of wchat_t to represent UTF-32 strings

The intention of the native HelenOS string API has been always to
support Unicode in the UTF-8 and UTF-32 encodings as the sole character
representations and ignore the obsolete mess of older single-byte and
multibyte character encodings. Before C11, the wchar_t type has been
slightly misused for the purpose of the UTF-32 strings. The newer
char32_t type is obviously a much more suitable option. The standard
defines char32_t as uint_least32_t, thus we can take the liberty to fix
it to uint32_t.

To maintain compatilibity with the C Standard, the putwchar(wchar_t)
functions has been replaced by our custom putuchar(char32_t) functions
where appropriate.

  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*
2 * Copyright (c) 2009 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup inputgen generic
30 * @brief Keyboard layout interface.
31 * @ingroup input
32 * @{
33 */
34/** @file
35 */
36
37#ifndef KBD_LAYOUT_H_
38#define KBD_LAYOUT_H_
39
40#include <io/console.h>
41
42/** Layout instance state */
43typedef struct layout {
44 /** Ops structure */
45 struct layout_ops *ops;
46
47 /* Layout-private data */
48 void *layout_priv;
49} layout_t;
50
51/** Layout ops */
52typedef struct layout_ops {
53 errno_t (*create)(layout_t *);
54 void (*destroy)(layout_t *);
55 char32_t (*parse_ev)(layout_t *, kbd_event_t *);
56} layout_ops_t;
57
58extern layout_ops_t us_qwerty_ops;
59extern layout_ops_t us_dvorak_ops;
60extern layout_ops_t cz_ops;
61extern layout_ops_t ar_ops;
62extern layout_ops_t fr_azerty_ops;
63
64extern layout_t *layout_create(layout_ops_t *);
65extern void layout_destroy(layout_t *);
66extern char32_t layout_parse_ev(layout_t *, kbd_event_t *);
67
68#endif
69
70/**
71 * @}
72 */
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