--- /dev/null
+/* speakup_keyhelp.c
+ * help module for speakup
+ *
+ *written by David Borowski.
+ *
+ * Copyright (C) 2003 David Borowski.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/keyboard.h>
+#include "spk_priv.h"
+#include "speakup.h"
+
+#define MAXFUNCS 130
+#define MAXKEYS 256
+static const int num_key_names = MSG_KEYNAMES_END - MSG_KEYNAMES_START + 1;
+static u_short key_offsets[MAXFUNCS], key_data[MAXKEYS];
+static u_short masks[] = { 32, 16, 8, 4, 2, 1 };
+
+static short letter_offsets[26] = {
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1 };
+
+static u_char funcvals[] = {
+ ATTRIB_BLEEP_DEC, ATTRIB_BLEEP_INC, BLEEPS_DEC, BLEEPS_INC,
+ SAY_FIRST_CHAR, SAY_LAST_CHAR, SAY_CHAR, SAY_CHAR_NUM,
+ SAY_NEXT_CHAR, SAY_PHONETIC_CHAR, SAY_PREV_CHAR, SPEAKUP_PARKED,
+ SPEAKUP_CUT, EDIT_DELIM, EDIT_EXNUM, EDIT_MOST,
+ EDIT_REPEAT, EDIT_SOME, SPEAKUP_GOTO, BOTTOM_EDGE,
+ LEFT_EDGE, RIGHT_EDGE, TOP_EDGE, SPEAKUP_HELP,
+ SAY_LINE, SAY_NEXT_LINE, SAY_PREV_LINE, SAY_LINE_INDENT,
+ SPEAKUP_PASTE, PITCH_DEC, PITCH_INC, PUNCT_DEC,
+ PUNCT_INC, PUNC_LEVEL_DEC, PUNC_LEVEL_INC, SPEAKUP_QUIET,
+ RATE_DEC, RATE_INC, READING_PUNC_DEC, READING_PUNC_INC,
+ SAY_ATTRIBUTES, SAY_FROM_LEFT, SAY_FROM_TOP, SAY_POSITION,
+ SAY_SCREEN, SAY_TO_BOTTOM, SAY_TO_RIGHT, SPK_KEY,
+ SPK_LOCK, SPEAKUP_OFF, SPEECH_KILL, SPELL_DELAY_DEC,
+ SPELL_DELAY_INC, SPELL_WORD, SPELL_PHONETIC, TONE_DEC,
+ TONE_INC, VOICE_DEC, VOICE_INC, VOL_DEC,
+ VOL_INC, CLEAR_WIN, SAY_WIN, SET_WIN,
+ ENABLE_WIN, SAY_WORD, SAY_NEXT_WORD, SAY_PREV_WORD, 0
+};
+
+static u_char *state_tbl;
+static int cur_item, nstates;
+
+static void build_key_data(void)
+{
+ u_char *kp, counters[MAXFUNCS], ch, ch1;
+ u_short *p_key = key_data, key;
+ int i, offset = 1;
+
+ nstates = (int)(state_tbl[-1]);
+ memset(counters, 0, sizeof(counters));
+ memset(key_offsets, 0, sizeof(key_offsets));
+ kp = state_tbl + nstates + 1;
+ while (*kp++) {
+ /* count occurrences of each function */
+ for (i = 0; i < nstates; i++, kp++) {
+ if (!*kp)
+ continue;
+ if ((state_tbl[i]&16) != 0 && *kp == SPK_KEY)
+ continue;
+ counters[*kp]++;
+ }
+ }
+ for (i = 0; i < MAXFUNCS; i++) {
+ if (counters[i] == 0)
+ continue;
+ key_offsets[i] = offset;
+ offset += (counters[i]+1);
+ if (offset >= MAXKEYS)
+ break;
+ }
+/* leave counters set so high keycodes come first.
+ * this is done so num pad and other extended keys maps are spoken before
+ * the alpha with speakup type mapping.
+ */
+ kp = state_tbl + nstates + 1;
+ while ((ch = *kp++)) {
+ for (i = 0; i < nstates; i++) {
+ ch1 = *kp++;
+ if (!ch1)
+ continue;
+ if ((state_tbl[i]&16) != 0 && ch1 == SPK_KEY)
+ continue;
+ key = (state_tbl[i] << 8) + ch;
+ counters[ch1]--;
+ offset = key_offsets[ch1];
+ if (!offset)
+ continue;
+ p_key = key_data + offset + counters[ch1];
+ *p_key = key;
+ }
+ }
+}
+
+static void say_key(int key)
+{
+ int i, state = key >> 8;
+
+ key &= 0xff;
+ for (i = 0; i < 6; i++) {
+ if (state & masks[i])
+ synth_printf(" %s", spk_msg_get(MSG_STATES_START + i));
+ }
+ if ((key > 0) && (key <= num_key_names))
+ synth_printf(" %s\n",
+ spk_msg_get(MSG_KEYNAMES_START + (key - 1)));
+}
+
+static int help_init(void)
+{
+ char start = SPACE;
+ int i;
+ int num_funcs = MSG_FUNCNAMES_END - MSG_FUNCNAMES_START + 1;
+
+ state_tbl = spk_our_keys[0]+SHIFT_TBL_SIZE+2;
+ for (i = 0; i < num_funcs; i++) {
+ char *cur_funcname = spk_msg_get(MSG_FUNCNAMES_START + i);
+
+ if (start == *cur_funcname)
+ continue;
+ start = *cur_funcname;
+ letter_offsets[(start&31)-1] = i;
+ }
+ return 0;
+}
+
+int spk_handle_help(struct vc_data *vc, u_char type, u_char ch, u_short key)
+{
+ int i, n;
+ char *name;
+ u_char func, *kp;
+ u_short *p_keys, val;
+
+ if (letter_offsets[0] == -1)
+ help_init();
+ if (type == KT_LATIN) {
+ if (ch == SPACE) {
+ spk_special_handler = NULL;
+ synth_printf("%s\n", spk_msg_get(MSG_LEAVING_HELP));
+ return 1;
+ }
+ ch |= 32; /* lower case */
+ if (ch < 'a' || ch > 'z')
+ return -1;
+ if (letter_offsets[ch-'a'] == -1) {
+ synth_printf(spk_msg_get(MSG_NO_COMMAND), ch);
+ synth_printf("\n");
+ return 1;
+ }
+ cur_item = letter_offsets[ch-'a'];
+ } else if (type == KT_CUR) {
+ if (ch == 0
+ && (MSG_FUNCNAMES_START + cur_item + 1) <=
+ MSG_FUNCNAMES_END)
+ cur_item++;
+ else if (ch == 3 && cur_item > 0)
+ cur_item--;
+ else
+ return -1;
+ } else if (type == KT_SPKUP
+ && ch == SPEAKUP_HELP
+ && !spk_special_handler) {
+ spk_special_handler = spk_handle_help;
+ synth_printf("%s\n", spk_msg_get(MSG_HELP_INFO));
+ build_key_data(); /* rebuild each time in case new mapping */
+ return 1;
+ } else {
+ name = NULL;
+ if ((type != KT_SPKUP) && (key > 0) && (key <= num_key_names)) {
+ synth_printf("%s\n",
+ spk_msg_get(MSG_KEYNAMES_START + key-1));
+ return 1;
+ }
+ for (i = 0; funcvals[i] != 0 && !name; i++) {
+ if (ch == funcvals[i])
+ name = spk_msg_get(MSG_FUNCNAMES_START + i);
+ }
+ if (!name)
+ return -1;
+ kp = spk_our_keys[key]+1;
+ for (i = 0; i < nstates; i++) {
+ if (ch == kp[i])
+ break;
+ }
+ key += (state_tbl[i] << 8);
+ say_key(key);
+ synth_printf(spk_msg_get(MSG_KEYDESC), name);
+ synth_printf("\n");
+ return 1;
+ }
+ name = spk_msg_get(MSG_FUNCNAMES_START + cur_item);
+ func = funcvals[cur_item];
+ synth_printf("%s", name);
+ if (key_offsets[func] == 0) {
+ synth_printf(" %s\n", spk_msg_get(MSG_IS_UNASSIGNED));
+ return 1;
+ }
+ p_keys = key_data + key_offsets[func];
+ for (n = 0; p_keys[n]; n++) {
+ val = p_keys[n];
+ if (n > 0)
+ synth_printf("%s ", spk_msg_get(MSG_DISJUNCTION));
+ say_key(val);
+ }
+ return 1;
+}
Code Review / kvmfornfv.git / blobdiff