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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2014 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version. Please see the file LICENSE-GPL for details.
*
* Web Page: http://mielke.cc/brltty/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include "log.h"
#include "report.h"
#include "brl_utils.h"
#include "brl_dots.h"
#include "async_wait.h"
#include "ktb.h"
#include "update.h"
void
drainBrailleOutput (BrailleDisplay *brl, int minimumDelay) {
int duration = brl->writeDelay + 1;
brl->writeDelay = 0;
if (duration < minimumDelay) duration = minimumDelay;
asyncWait(duration);
}
void
setBrailleOffline (BrailleDisplay *brl) {
if (!brl->isOffline) {
brl->isOffline = 1;
logMessage(LOG_DEBUG, "braille offline");
{
KeyTable *keyTable = brl->keyTable;
if (keyTable) releaseAllKeys(keyTable);
}
report(REPORT_BRAILLE_OFFLINE, NULL);
}
}
void
setBrailleOnline (BrailleDisplay *brl) {
if (brl->isOffline) {
brl->isOffline = 0;
logMessage(LOG_DEBUG, "braille online");
report(REPORT_BRAILLE_ONLINE, NULL);
brl->writeDelay = 0;
scheduleUpdate("braille online");
}
}
/* Functions which support vertical and horizontal status cells. */
unsigned char
lowerDigit (unsigned char upper) {
unsigned char lower = 0;
if (upper & BRL_DOT_1) lower |= BRL_DOT_3;
if (upper & BRL_DOT_2) lower |= BRL_DOT_7;
if (upper & BRL_DOT_4) lower |= BRL_DOT_6;
if (upper & BRL_DOT_5) lower |= BRL_DOT_8;
return lower;
}
/* Dots for landscape (counterclockwise-rotated) digits. */
const unsigned char landscapeDigits[11] = {
BRL_DOT_1 | BRL_DOT_5 | BRL_DOT_2,
BRL_DOT_4,
BRL_DOT_4 | BRL_DOT_1,
BRL_DOT_4 | BRL_DOT_5,
BRL_DOT_4 | BRL_DOT_5 | BRL_DOT_2,
BRL_DOT_4 | BRL_DOT_2,
BRL_DOT_4 | BRL_DOT_1 | BRL_DOT_5,
BRL_DOT_4 | BRL_DOT_1 | BRL_DOT_5 | BRL_DOT_2,
BRL_DOT_4 | BRL_DOT_1 | BRL_DOT_2,
BRL_DOT_1 | BRL_DOT_5,
BRL_DOT_1 | BRL_DOT_2 | BRL_DOT_4 | BRL_DOT_5
};
/* Format landscape representation of numbers 0 through 99. */
int
landscapeNumber (int x) {
return landscapeDigits[(x / 10) % 10] | lowerDigit(landscapeDigits[x % 10]);
}
/* Format landscape flag state indicator. */
int
landscapeFlag (int number, int on) {
int dots = landscapeDigits[number % 10];
if (on) dots |= lowerDigit(landscapeDigits[10]);
return dots;
}
/* Dots for seascape (clockwise-rotated) digits. */
const unsigned char seascapeDigits[11] = {
BRL_DOT_5 | BRL_DOT_1 | BRL_DOT_4,
BRL_DOT_2,
BRL_DOT_2 | BRL_DOT_5,
BRL_DOT_2 | BRL_DOT_1,
BRL_DOT_2 | BRL_DOT_1 | BRL_DOT_4,
BRL_DOT_2 | BRL_DOT_4,
BRL_DOT_2 | BRL_DOT_5 | BRL_DOT_1,
BRL_DOT_2 | BRL_DOT_5 | BRL_DOT_1 | BRL_DOT_4,
BRL_DOT_2 | BRL_DOT_5 | BRL_DOT_4,
BRL_DOT_5 | BRL_DOT_1,
BRL_DOT_1 | BRL_DOT_2 | BRL_DOT_4 | BRL_DOT_5
};
/* Format seascape representation of numbers 0 through 99. */
int
seascapeNumber (int x) {
return lowerDigit(seascapeDigits[(x / 10) % 10]) | seascapeDigits[x % 10];
}
/* Format seascape flag state indicator. */
int
seascapeFlag (int number, int on) {
int dots = lowerDigit(seascapeDigits[number % 10]);
if (on) dots |= seascapeDigits[10];
return dots;
}
/* Dots for portrait digits - 2 numbers in one cells */
const unsigned char portraitDigits[11] = {
BRL_DOT_2 | BRL_DOT_4 | BRL_DOT_5,
BRL_DOT_1,
BRL_DOT_1 | BRL_DOT_2,
BRL_DOT_1 | BRL_DOT_4,
BRL_DOT_1 | BRL_DOT_4 | BRL_DOT_5,
BRL_DOT_1 | BRL_DOT_5,
BRL_DOT_1 | BRL_DOT_2 | BRL_DOT_4,
BRL_DOT_1 | BRL_DOT_2 | BRL_DOT_4 | BRL_DOT_5,
BRL_DOT_1 | BRL_DOT_2 | BRL_DOT_5,
BRL_DOT_2 | BRL_DOT_4,
BRL_DOT_1 | BRL_DOT_2 | BRL_DOT_4 | BRL_DOT_5
};
/* Format portrait representation of numbers 0 through 99. */
int
portraitNumber (int x) {
return portraitDigits[(x / 10) % 10] | lowerDigit(portraitDigits[x % 10]);
}
/* Format portrait flag state indicator. */
int
portraitFlag (int number, int on) {
int dots = lowerDigit(portraitDigits[number % 10]);
if (on) dots |= portraitDigits[10];
return dots;
}
|
