Commit | Line | Data |
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c6e3fd22 | 1 | /* speakup_keyhelp.c |
09adcb52 WH |
2 | * help module for speakup |
3 | * | |
4 | *written by David Borowski. | |
5 | * | |
6 | * Copyright (C) 2003 David Borowski. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
c6e3fd22 WH |
22 | |
23 | #include <linux/keyboard.h> | |
24 | #include "spk_priv.h" | |
25 | #include "speakup.h" | |
26 | ||
27 | #define MAXFUNCS 130 | |
28 | #define MAXKEYS 256 | |
29 | static const int num_key_names = MSG_KEYNAMES_END - MSG_KEYNAMES_START + 1; | |
30 | static u_short key_offsets[MAXFUNCS], key_data[MAXKEYS]; | |
31 | static u_short masks[] = { 32, 16, 8, 4, 2, 1 }; | |
32 | ||
09adcb52 | 33 | static short letter_offsets[26] = { |
1bd15cfd TD |
34 | -1, -1, -1, -1, -1, -1, -1, -1, |
35 | -1, -1, -1, -1, -1, -1, -1, -1, | |
36 | -1, -1, -1, -1, -1, -1, -1, -1, | |
37 | -1, -1 }; | |
c6e3fd22 WH |
38 | |
39 | static u_char funcvals[] = { | |
40 | ATTRIB_BLEEP_DEC, ATTRIB_BLEEP_INC, BLEEPS_DEC, BLEEPS_INC, | |
41 | SAY_FIRST_CHAR, SAY_LAST_CHAR, SAY_CHAR, SAY_CHAR_NUM, | |
42 | SAY_NEXT_CHAR, SAY_PHONETIC_CHAR, SAY_PREV_CHAR, SPEAKUP_PARKED, | |
43 | SPEAKUP_CUT, EDIT_DELIM, EDIT_EXNUM, EDIT_MOST, | |
44 | EDIT_REPEAT, EDIT_SOME, SPEAKUP_GOTO, BOTTOM_EDGE, | |
45 | LEFT_EDGE, RIGHT_EDGE, TOP_EDGE, SPEAKUP_HELP, | |
46 | SAY_LINE, SAY_NEXT_LINE, SAY_PREV_LINE, SAY_LINE_INDENT, | |
47 | SPEAKUP_PASTE, PITCH_DEC, PITCH_INC, PUNCT_DEC, | |
48 | PUNCT_INC, PUNC_LEVEL_DEC, PUNC_LEVEL_INC, SPEAKUP_QUIET, | |
49 | RATE_DEC, RATE_INC, READING_PUNC_DEC, READING_PUNC_INC, | |
50 | SAY_ATTRIBUTES, SAY_FROM_LEFT, SAY_FROM_TOP, SAY_POSITION, | |
51 | SAY_SCREEN, SAY_TO_BOTTOM, SAY_TO_RIGHT, SPK_KEY, | |
52 | SPK_LOCK, SPEAKUP_OFF, SPEECH_KILL, SPELL_DELAY_DEC, | |
53 | SPELL_DELAY_INC, SPELL_WORD, SPELL_PHONETIC, TONE_DEC, | |
54 | TONE_INC, VOICE_DEC, VOICE_INC, VOL_DEC, | |
55 | VOL_INC, CLEAR_WIN, SAY_WIN, SET_WIN, | |
56 | ENABLE_WIN, SAY_WORD, SAY_NEXT_WORD, SAY_PREV_WORD, 0 | |
57 | }; | |
58 | ||
59 | static u_char *state_tbl; | |
60 | static int cur_item, nstates; | |
61 | ||
62 | static void build_key_data(void) | |
63 | { | |
64 | u_char *kp, counters[MAXFUNCS], ch, ch1; | |
65 | u_short *p_key = key_data, key; | |
66 | int i, offset = 1; | |
67 | nstates = (int)(state_tbl[-1]); | |
68 | memset(counters, 0, sizeof(counters)); | |
69 | memset(key_offsets, 0, sizeof(key_offsets)); | |
70 | kp = state_tbl + nstates + 1; | |
71 | while (*kp++) { | |
25985edc | 72 | /* count occurrences of each function */ |
c6e3fd22 WH |
73 | for (i = 0; i < nstates; i++, kp++) { |
74 | if (!*kp) | |
75 | continue; | |
76 | if ((state_tbl[i]&16) != 0 && *kp == SPK_KEY) | |
77 | continue; | |
78 | counters[*kp]++; | |
79 | } | |
80 | } | |
81 | for (i = 0; i < MAXFUNCS; i++) { | |
82 | if (counters[i] == 0) | |
83 | continue; | |
84 | key_offsets[i] = offset; | |
85 | offset += (counters[i]+1); | |
86 | if (offset >= MAXKEYS) | |
87 | break; | |
88 | } | |
89 | /* leave counters set so high keycodes come first. | |
09adcb52 WH |
90 | * this is done so num pad and other extended keys maps are spoken before |
91 | * the alpha with speakup type mapping. | |
92 | */ | |
c6e3fd22 WH |
93 | kp = state_tbl + nstates + 1; |
94 | while ((ch = *kp++)) { | |
95 | for (i = 0; i < nstates; i++) { | |
96 | ch1 = *kp++; | |
97 | if (!ch1) | |
98 | continue; | |
99 | if ((state_tbl[i]&16) != 0 && ch1 == SPK_KEY) | |
100 | continue; | |
101 | key = (state_tbl[i] << 8) + ch; | |
102 | counters[ch1]--; | |
103 | offset = key_offsets[ch1]; | |
104 | if (!offset) | |
105 | continue; | |
106 | p_key = key_data + offset + counters[ch1]; | |
107 | *p_key = key; | |
108 | } | |
109 | } | |
110 | } | |
111 | ||
112 | static void say_key(int key) | |
113 | { | |
114 | int i, state = key >> 8; | |
115 | key &= 0xff; | |
116 | for (i = 0; i < 6; i++) { | |
117 | if (state & masks[i]) | |
118 | synth_printf(" %s", msg_get(MSG_STATES_START + i)); | |
119 | } | |
120 | if ((key > 0) && (key <= num_key_names)) | |
121 | synth_printf(" %s\n", msg_get(MSG_KEYNAMES_START + (key - 1))); | |
122 | } | |
123 | ||
124 | static int help_init(void) | |
125 | { | |
126 | char start = SPACE; | |
127 | int i; | |
128 | int num_funcs = MSG_FUNCNAMES_END - MSG_FUNCNAMES_START + 1; | |
129 | state_tbl = our_keys[0]+SHIFT_TBL_SIZE+2; | |
130 | for (i = 0; i < num_funcs; i++) { | |
131 | char *cur_funcname = msg_get(MSG_FUNCNAMES_START + i); | |
132 | if (start == *cur_funcname) | |
133 | continue; | |
134 | start = *cur_funcname; | |
135 | letter_offsets[(start&31)-1] = i; | |
136 | } | |
137 | return 0; | |
138 | } | |
139 | ||
140 | int handle_help(struct vc_data *vc, u_char type, u_char ch, u_short key) | |
141 | { | |
142 | int i, n; | |
143 | char *name; | |
144 | u_char func, *kp; | |
145 | u_short *p_keys, val; | |
146 | if (letter_offsets[0] == -1) | |
147 | help_init(); | |
148 | if (type == KT_LATIN) { | |
149 | if (ch == SPACE) { | |
150 | special_handler = NULL; | |
151 | synth_printf("%s\n", msg_get(MSG_LEAVING_HELP)); | |
152 | return 1; | |
153 | } | |
154 | ch |= 32; /* lower case */ | |
155 | if (ch < 'a' || ch > 'z') | |
156 | return -1; | |
157 | if (letter_offsets[ch-'a'] == -1) { | |
158 | synth_printf(msg_get(MSG_NO_COMMAND), ch); | |
159 | synth_printf("\n"); | |
160 | return 1; | |
161 | } | |
162 | cur_item = letter_offsets[ch-'a']; | |
163 | } else if (type == KT_CUR) { | |
87be424a CB |
164 | if (ch == 0 |
165 | && (MSG_FUNCNAMES_START + cur_item + 1) <= | |
166 | MSG_FUNCNAMES_END) | |
c6e3fd22 WH |
167 | cur_item++; |
168 | else if (ch == 3 && cur_item > 0) | |
169 | cur_item--; | |
170 | else | |
171 | return -1; | |
172 | } else if (type == KT_SPKUP && ch == SPEAKUP_HELP && !special_handler) { | |
173 | special_handler = handle_help; | |
174 | synth_printf("%s\n", msg_get(MSG_HELP_INFO)); | |
175 | build_key_data(); /* rebuild each time in case new mapping */ | |
176 | return 1; | |
177 | } else { | |
178 | name = NULL; | |
179 | if ((type != KT_SPKUP) && (key > 0) && (key <= num_key_names)) { | |
09adcb52 WH |
180 | synth_printf("%s\n", |
181 | msg_get(MSG_KEYNAMES_START + key-1)); | |
c6e3fd22 WH |
182 | return 1; |
183 | } | |
184 | for (i = 0; funcvals[i] != 0 && !name; i++) { | |
185 | if (ch == funcvals[i]) | |
186 | name = msg_get(MSG_FUNCNAMES_START + i); | |
187 | } | |
188 | if (!name) | |
189 | return -1; | |
190 | kp = our_keys[key]+1; | |
191 | for (i = 0; i < nstates; i++) { | |
192 | if (ch == kp[i]) | |
193 | break; | |
194 | } | |
195 | key += (state_tbl[i] << 8); | |
196 | say_key(key); | |
197 | synth_printf(msg_get(MSG_KEYDESC), name); | |
198 | synth_printf("\n"); | |
199 | return 1; | |
200 | } | |
201 | name = msg_get(MSG_FUNCNAMES_START + cur_item); | |
202 | func = funcvals[cur_item]; | |
203 | synth_printf("%s", name); | |
204 | if (key_offsets[func] == 0) { | |
205 | synth_printf(" %s\n", msg_get(MSG_IS_UNASSIGNED)); | |
206 | return 1; | |
207 | } | |
208 | p_keys = key_data + key_offsets[func]; | |
209 | for (n = 0; p_keys[n]; n++) { | |
210 | val = p_keys[n]; | |
211 | if (n > 0) | |
212 | synth_printf("%s ", msg_get(MSG_DISJUNCTION)); | |
213 | say_key(val); | |
214 | } | |
215 | return 1; | |
216 | } |