1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
#include "keyboard.h"
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <xkbcommon/xkbcommon.h>
struct imv_keyboard {
struct xkb_context *context;
struct xkb_keymap *keymap;
struct xkb_state *state;
};
struct imv_keyboard *imv_keyboard_create(void)
{
struct imv_keyboard *keyboard = calloc(1, sizeof *keyboard);
keyboard->context = xkb_context_new(0);
assert(keyboard->context);
struct xkb_rule_names names = {
.rules = NULL,
.model = NULL,
.layout = NULL,
.variant = NULL,
.options = NULL,
};
keyboard->keymap = xkb_keymap_new_from_names(keyboard->context, &names, 0);
assert(keyboard->keymap);
keyboard->state = xkb_state_new(keyboard->keymap);
assert(keyboard->state);
return keyboard;
}
void imv_keyboard_free(struct imv_keyboard *keyboard)
{
if (!keyboard) {
return;
}
xkb_state_unref(keyboard->state);
keyboard->state = NULL;
xkb_keymap_unref(keyboard->keymap);
keyboard->keymap = NULL;
xkb_context_unref(keyboard->context);
keyboard->context = NULL;
free(keyboard);
}
static const int scancode_offset = 8;
void imv_keyboard_update_key(struct imv_keyboard *keyboard, int scancode, bool pressed)
{
xkb_state_update_key(keyboard->state, scancode + scancode_offset, pressed ? XKB_KEY_DOWN : XKB_KEY_UP);
}
void imv_keyboard_update_mods(struct imv_keyboard *keyboard,
int depressed, int latched, int locked)
{
xkb_state_update_mask(keyboard->state, depressed, latched, locked, 0, 0, 0);
}
static const char *describe_prefix(struct imv_keyboard *keyboard)
{
const bool ctrl = (xkb_state_mod_name_is_active(keyboard->state, XKB_MOD_NAME_CTRL, XKB_STATE_MODS_EFFECTIVE) > 0);
const bool alt = (xkb_state_mod_name_is_active(keyboard->state, XKB_MOD_NAME_ALT, XKB_STATE_MODS_EFFECTIVE) > 0);
const bool shift = (xkb_state_mod_name_is_active(keyboard->state, XKB_MOD_NAME_SHIFT, XKB_STATE_MODS_EFFECTIVE) > 0);
if (ctrl && !alt && !shift) {
return "Ctrl+";
} else if (!ctrl && alt && !shift) {
return "Meta+";
} else if (!ctrl && !alt && shift) {
return "Shift+";
} else if (ctrl && alt && !shift) {
return "Ctrl+Meta+";
} else if (ctrl && !alt && shift) {
return "Ctrl+Shift+";
} else if (!ctrl && alt && shift) {
return "Meta+Shift+";
} else if (ctrl && alt && shift) {
return "Ctrl+Meta+Shift+";
} else {
return "";
}
}
size_t imv_keyboard_keyname(struct imv_keyboard *keyboard, int scancode, char *buf, size_t buflen)
{
xkb_keysym_t keysym = xkb_state_key_get_one_sym(keyboard->state, scancode + scancode_offset);
return xkb_keysym_get_name(keysym, buf, buflen);
}
char *imv_keyboard_describe_key(struct imv_keyboard *keyboard, int scancode)
{
char keyname[128] = {0};
imv_keyboard_keyname(keyboard, scancode, keyname, sizeof keyname);
/* Modifier keys don't count on their own, only when pressed with another key */
if (!strcmp(keyname, "Control_L") ||
!strcmp(keyname, "Control_R") ||
!strcmp(keyname, "Alt_L") ||
!strcmp(keyname, "Alt_R") ||
!strcmp(keyname, "Shift_L") ||
!strcmp(keyname, "Shift_R") ||
!strcmp(keyname, "Meta_L") ||
!strcmp(keyname, "Meta_R") ||
!strcmp(keyname, "Super_L") ||
!strcmp(keyname, "Super_R")) {
return NULL;
}
const char *prefix = describe_prefix(keyboard);
char buf[128];
snprintf(buf, sizeof buf, "%s%s", prefix, keyname);
return strdup(buf);
}
size_t imv_keyboard_get_text(struct imv_keyboard *keyboard, int scancode, char *buf, size_t buflen)
{
return xkb_state_key_get_utf8(keyboard->state, scancode + scancode_offset, buf, buflen);
}
void imv_keyboard_set_keymap(struct imv_keyboard *keyboard, const char *keymap)
{
xkb_keymap_unref(keyboard->keymap);
keyboard->keymap = xkb_keymap_new_from_string(keyboard->context, keymap, XKB_KEYMAP_FORMAT_TEXT_V1, XKB_KEYMAP_COMPILE_NO_FLAGS);
xkb_state_unref(keyboard->state);
keyboard->state = xkb_state_new(keyboard->keymap);
}
bool imv_keyboard_should_key_repeat(struct imv_keyboard *keyboard, int scancode)
{
return xkb_keymap_key_repeats(keyboard->keymap, scancode + scancode_offset);
}
|
