/* Converts a key code to a brltty command according to the context */
int brl_keyToCommand(BrailleDisplay *brl, KeyTableCommandContext context, int code)
{
static int ctrlpressed = 0;
static int altpressed = 0;
static int cut = 0;
static int descchar = 0;
unsigned char ch;
int type;
ch = code & 0xff;
type = code & (~ 0xff);
if (code==0) return 0;
if (code==EOF) return EOF;
if (type==BRL_VSMSK_CHAR) {
int command = ch | BRL_CMD_BLK(PASSCHAR) | altpressed | ctrlpressed;
altpressed = ctrlpressed = 0;
return command;
}
if (type==BRL_VSMSK_ROUTING) {
ctrlpressed = altpressed = 0;
switch (cut) {
case 0:
if (descchar) { descchar = 0; return ((int) ch) | BRL_CMD_BLK(DESCCHAR); }
else return ((int) ch) | BRL_CMD_BLK(ROUTE);
case 1: cut++; return ((int) ch) | BRL_CMD_BLK(CLIP_NEW);
case 2: cut = 0; return ((int) ch) | BRL_CMD_BLK(COPY_LINE);
}
return EOF; /* Should not be reached */
} else if (type==BRL_VSMSK_FUNCTIONKEY) {
ctrlpressed = altpressed = 0;
switch (code) {
case BRL_VSKEY_A1: return BRL_CMD_BLK(SWITCHVT);
case BRL_VSKEY_A2: return BRL_CMD_BLK(SWITCHVT)+1;
case BRL_VSKEY_A3: return BRL_CMD_BLK(SWITCHVT)+2;
case BRL_VSKEY_A6: return BRL_CMD_BLK(SWITCHVT)+3;
case BRL_VSKEY_A7: return BRL_CMD_BLK(SWITCHVT)+4;
case BRL_VSKEY_A8: return BRL_CMD_BLK(SWITCHVT)+5;
case BRL_VSKEY_B5: cut = 1; return EOF;
case BRL_VSKEY_B6: return BRL_CMD_TOP_LEFT;
case BRL_VSKEY_D6: return BRL_CMD_BOT_LEFT;
case BRL_VSKEY_A4: return BRL_CMD_FWINLTSKIP;
case BRL_VSKEY_B8: return BRL_CMD_FWINLTSKIP;
case BRL_VSKEY_A5: return BRL_CMD_FWINRTSKIP;
case BRL_VSKEY_D8: return BRL_CMD_FWINRTSKIP;
case BRL_VSKEY_B7: return BRL_CMD_LNUP;
case BRL_VSKEY_D7: return BRL_CMD_LNDN;
case BRL_VSKEY_C8: return BRL_CMD_FWINRT;
case BRL_VSKEY_C6: return BRL_CMD_FWINLT;
case BRL_VSKEY_C7: return BRL_CMD_HOME;
case BRL_VSKEY_B2: return BRL_CMD_KEY(CURSOR_UP);
case BRL_VSKEY_D2: return BRL_CMD_KEY(CURSOR_DOWN);
case BRL_VSKEY_C3: return BRL_CMD_KEY(CURSOR_RIGHT);
case BRL_VSKEY_C1: return BRL_CMD_KEY(CURSOR_LEFT);
case BRL_VSKEY_B3: return BRL_CMD_CSRVIS;
case BRL_VSKEY_D1: return BRL_CMD_KEY(DELETE);
case BRL_VSKEY_D3: return BRL_CMD_KEY(INSERT);
case BRL_VSKEY_C5: return BRL_CMD_PASTE;
case BRL_VSKEY_D5: descchar = 1; return EOF;
default: return EOF;
}
} else if (type==BRL_VSMSK_OTHER) {
/* ctrlpressed = 0; */
if ((ch>=0xe1) && (ch<=0xea)) {
int flags = altpressed;
ch-=0xe1;
altpressed = 0;
return flags | BRL_CMD_BLK(PASSKEY) | ( BRL_KEY_FUNCTION + ch);
}
/* altpressed = 0; */
switch (code) {
case BRL_VSKEY_PLOC_LT: return BRL_CMD_SIXDOTS;
case BRL_VSKEY_BACKSPACE: return BRL_CMD_KEY(BACKSPACE);
case BRL_VSKEY_TAB: return BRL_CMD_KEY(TAB);
case BRL_VSKEY_RETURN: return BRL_CMD_KEY(ENTER);
case BRL_VSKEY_PLOC_PLOC_A: return BRL_CMD_HELP;
case BRL_VSKEY_PLOC_PLOC_B: return BRL_CMD_TUNES;
case BRL_VSKEY_PLOC_PLOC_C: return BRL_CMD_PREFMENU;
case BRL_VSKEY_PLOC_PLOC_D: return BRL_CMD_KEY(PAGE_DOWN);
case BRL_VSKEY_PLOC_PLOC_E: return BRL_CMD_KEY(END);
case BRL_VSKEY_PLOC_PLOC_F: return BRL_CMD_FREEZE;
case BRL_VSKEY_PLOC_PLOC_H: return BRL_CMD_KEY(HOME);
case BRL_VSKEY_PLOC_PLOC_I: return BRL_CMD_INFO;
case BRL_VSKEY_PLOC_PLOC_L: return BRL_CMD_LEARN;
case BRL_VSKEY_PLOC_PLOC_R: return BRL_CMD_PREFLOAD;
case BRL_VSKEY_PLOC_PLOC_S: return BRL_CMD_PREFSAVE;
case BRL_VSKEY_PLOC_PLOC_T: return BRL_CMD_CSRTRK;
case BRL_VSKEY_PLOC_PLOC_U: return BRL_CMD_KEY(PAGE_UP);
case BRL_VSKEY_CONTROL: ctrlpressed = BRL_FLG_INPUT_CONTROL; return BRL_CMD_NOOP;
case BRL_VSKEY_ALT: altpressed = BRL_FLG_INPUT_META; return BRL_CMD_NOOP;
case BRL_VSKEY_ESCAPE: return BRL_CMD_KEY(ESCAPE);
default: return EOF;
}
}
return EOF;
}
static int
brl_readCommand (BrailleDisplay *brl, KeyTableCommandContext context) {
while (1) {
unsigned char packet[3];
int size = readPacket(brl, packet, sizeof(packet));
if (size == 0) break;
if (size < 0) return BRL_CMD_RESTARTBRL;
switch (packet[1]) {
default:
break;
case 1:
return BRL_CMD_BLK(PASSDOTS) | translateInputCell(packet[2]);
case 2: {
unsigned char column = packet[2];
if (column && (column <= brl->textColumns)) return BRL_CMD_BLK(ROUTE) + (column - 1);
break;
}
case 3:
switch (packet[2]) {
default:
break;
// left rear: two columns, one row
case 0X02: // ESC
return BRL_CMD_LEARN;
case 0X01: // M
return BRL_CMD_PREFMENU;
// left middle: cross
case 0X06: // up
return BRL_CMD_LNUP;
case 0X03: // left
return BRL_CMD_FWINLT;
case 0X05: // right
return BRL_CMD_FWINRT;
case 0X04: // down
return BRL_CMD_LNDN;
// left front: two columns, three rows
case 0X09: // ins
return BRL_CMD_RETURN;
case 0X0A: // E
return BRL_CMD_TOP;
case 0X0B: // supp
return BRL_CMD_CSRTRK;
case 0X0C: // L
return BRL_CMD_BOT;
case 0X07: // extra 1 (40s only)
return BRL_CMD_CHRLT;
case 0X08: // extra 2 (40s only)
return BRL_CMD_CHRRT;
case 0x0E: // left thumb
return BRL_CMD_KEY(BACKSPACE);
case 0x0F: // right thumb
return BRL_CMD_BLK(PASSDOTS);
case 0x3F: // both thumbs
return BRL_CMD_KEY(ENTER);
case 0X29: // key under dot 7
return BRL_CMD_KEY(ESCAPE);
case 0X2A: // key under dot 8
return BRL_CMD_KEY(TAB);
// right rear: one column, one row
case 0X19: // extra 3 (40s only)
return BRL_CMD_INFO;
// right middle: one column, two rows
case 0X1B: // extra 4 (40s only)
return BRL_CMD_PRDIFLN;
case 0X1A: // extra 5 (40s only)
return BRL_CMD_NXDIFLN;
// right front: one column, four rows
case 0X2B: // slash (40s only)
return BRL_CMD_FREEZE;
case 0X2C: // asterisk (40s only)
return BRL_CMD_DISPMD;
case 0X2D: // minus (40s only)
return BRL_CMD_ATTRVIS;
case 0X2E: // plus (40s only)
return BRL_CMD_CSRVIS;
// first (top) row of numeric pad
case 0X37: // seven (40s only)
return BRL_CMD_KEY(HOME);
case 0X38: // eight (40s only)
return BRL_CMD_KEY(CURSOR_UP);
case 0X39: // nine (40s only)
return BRL_CMD_KEY(PAGE_UP);
// second row of numeric pad
case 0X34: // four (40s only)
return BRL_CMD_KEY(CURSOR_LEFT);
case 0X35: // five (40s only)
return BRL_CMD_CSRJMP_VERT;
case 0X36: // six (40s only)
return BRL_CMD_KEY(CURSOR_RIGHT);
// third row of numeric pad
case 0X31: // one (40s only)
return BRL_CMD_KEY(END);
case 0X32: // two (40s only)
return BRL_CMD_KEY(CURSOR_DOWN);
case 0X33: // three (40s only)
return BRL_CMD_KEY(PAGE_DOWN);
// fourth (bottom) row of numeric pad
case 0X28: // verr num (40s only)
return BRL_CMD_SIXDOTS;
case 0X30: // zero (40s only)
return BRL_CMD_KEY(INSERT);
case 0X2F: // supp (40s only)
return BRL_CMD_KEY(DELETE);
}
break;
/* When data is written to the display it acknowledges with:
* 0X00 0X04 0Xxx
* where xx is the number of bytes written.
*/
case 4:
continue;
}
logUnexpectedPacket(packet, size);
}
return EOF;
}
static int
brl_readCommand (BrailleDisplay *brl, KeyTableCommandContext context) {
int key = readKey();
if (context != currentContext) {
logMessage(LOG_DEBUG, "Context switch: %d -> %d", currentContext, context);
switch (currentContext = context) {
case KTB_CTX_DEFAULT:
deviceStatus = DEV_ONLINE;
break;
default:
break;
}
}
if (key != EOF) {
switch (key) {
case KEY_FUNCTION_ENTER:
return BRL_CMD_KEY(ENTER);
case KEY_FUNCTION_TAB:
return BRL_CMD_KEY(TAB);
case KEY_FUNCTION_CURSOR_UP:
return BRL_CMD_KEY(CURSOR_UP);
case KEY_FUNCTION_CURSOR_DOWN:
return BRL_CMD_KEY(CURSOR_DOWN);
case KEY_FUNCTION_CURSOR_LEFT:
return BRL_CMD_KEY(CURSOR_LEFT);
case KEY_FUNCTION_CURSOR_RIGHT:
return BRL_CMD_KEY(CURSOR_RIGHT);
case KEY_FUNCTION_CURSOR_UP_JUMP:
return BRL_CMD_KEY(HOME);
case KEY_FUNCTION_CURSOR_DOWN_JUMP:
return BRL_CMD_KEY(END);
case KEY_FUNCTION_CURSOR_LEFT_JUMP:
return BRL_CMD_KEY(PAGE_UP);
case KEY_FUNCTION_CURSOR_RIGHT_JUMP:
return BRL_CMD_KEY(PAGE_DOWN);
case KEY_FUNCTION_F1:
return BRL_CMD_KFN(1);
case KEY_FUNCTION_F2:
return BRL_CMD_KFN(2);
case KEY_FUNCTION_F3:
return BRL_CMD_KFN(3);
case KEY_FUNCTION_F4:
return BRL_CMD_KFN(4);
case KEY_FUNCTION_F5:
return BRL_CMD_KFN(5);
case KEY_FUNCTION_F6:
return BRL_CMD_KFN(6);
case KEY_FUNCTION_F7:
return BRL_CMD_KFN(7);
case KEY_FUNCTION_F9:
return BRL_CMD_KFN(9);
case KEY_FUNCTION_F10:
return BRL_CMD_KFN(10);
case KEY_COMMAND: {
int command;
while ((command = readKey()) == EOF) asyncWait(1);
logMessage(LOG_DEBUG, "Received command: (0x%2.2X) 0x%4.4X", KEY_COMMAND, command);
switch (command) {
case KEY_COMMAND:
/* pressing the escape command twice will pass it through */
return BRL_CMD_BLK(PASSDOTS) + translateInputCell(KEY_COMMAND);
case KEY_COMMAND_SWITCHVT_PREV:
return BRL_CMD_SWITCHVT_PREV;
case KEY_COMMAND_SWITCHVT_NEXT:
return BRL_CMD_SWITCHVT_NEXT;
case KEY_COMMAND_SWITCHVT_1:
return BRL_CMD_BLK(SWITCHVT) + 0;
case KEY_COMMAND_SWITCHVT_2:
return BRL_CMD_BLK(SWITCHVT) + 1;
case KEY_COMMAND_SWITCHVT_3:
return BRL_CMD_BLK(SWITCHVT) + 2;
case KEY_COMMAND_SWITCHVT_4:
return BRL_CMD_BLK(SWITCHVT) + 3;
case KEY_COMMAND_SWITCHVT_5:
return BRL_CMD_BLK(SWITCHVT) + 4;
case KEY_COMMAND_SWITCHVT_6:
return BRL_CMD_BLK(SWITCHVT) + 5;
case KEY_COMMAND_SWITCHVT_7:
return BRL_CMD_BLK(SWITCHVT) + 6;
case KEY_COMMAND_SWITCHVT_8:
return BRL_CMD_BLK(SWITCHVT) + 7;
case KEY_COMMAND_SWITCHVT_9:
return BRL_CMD_BLK(SWITCHVT) + 8;
case KEY_COMMAND_SWITCHVT_10:
return BRL_CMD_BLK(SWITCHVT) + 9;
case KEY_COMMAND_PAGE_UP:
return BRL_CMD_KEY(PAGE_UP);
case KEY_COMMAND_PAGE_DOWN:
return BRL_CMD_KEY(PAGE_DOWN);
case KEY_COMMAND_PREFMENU:
currentLine = 0;
cursorRow = 0;
cursorColumn = 31;
sendCursorRow();
return BRL_CMD_PREFMENU;
case KEY_COMMAND_PREFSAVE:
return BRL_CMD_PREFSAVE;
case KEY_COMMAND_PREFLOAD:
return BRL_CMD_PREFLOAD;
case KEY_COMMAND_FREEZE_ON:
return BRL_CMD_FREEZE | BRL_FLG_TOGGLE_ON;
case KEY_COMMAND_FREEZE_OFF:
return BRL_CMD_FREEZE | BRL_FLG_TOGGLE_OFF;
case KEY_COMMAND_RESTARTBRL:
return BRL_CMD_RESTARTBRL;
case KEY_COMMAND_DOWNLOAD:
downloadFile();
break;
default:
logMessage(LOG_WARNING, "Unknown command: (0X%2.2X) 0X%4.4X", KEY_COMMAND, command);
break;
}
break;
}
default:
switch (key & KEY_MASK) {
case KEY_UPDATE:
handleUpdate(key >> KEY_SHIFT);
break;
case KEY_FUNCTION:
logMessage(LOG_WARNING, "Unknown function: (0X%2.2X) 0X%4.4X", KEY_COMMAND, key>>KEY_SHIFT);
break;
default: {
unsigned char dots = translateInputCell(key);
logMessage(LOG_DEBUG, "Received character: 0X%2.2X dec=%d dots=%2.2X", key, key, dots);
return BRL_CMD_BLK(PASSDOTS) + dots;
}
}
break;
}
}
return EOF;
}
