static int
interpretCharacter (BrailleDisplay *brl, unsigned char dots, KeyTableCommandContext context) {
int mask = 0X00;
switch (currentKeyboardMode) {
case KBM_NAVIGATE:
return interpretNavigation(brl, dots, context);
case KBM_INPUT:
break;
case KBM_INPUT_7:
mask |= 0X40;
break;
case KBM_INPUT_78:
mask |= 0XC0;
break;
case KBM_INPUT_8:
mask |= 0X80;
break;
}
return BRL_BLK_PASSDOTS + (translateInputCell(dots) | mask);
}
static int
brl_construct (BrailleDisplay *brl, char **parameters, const char *device) {
{
static TranslationTable outputTable = {
#include "brl-out.h"
};
setOutputTable(outputTable);
makeInputTable();
{
const unsigned char byte = 0XFF;
if (memchr(outputTable, byte, sizeof(outputTable))) {
outputTable[translateInputCell(byte)] = SUB;
}
}
}
if (!isSerialDeviceIdentifier(&device)) {
unsupportedDeviceIdentifier(device);
return 0;
}
makeDownloadFifo();
if ((serialDevice = serialOpenDevice(device))) {
if (serialRestartDevice(serialDevice, 9600)) {
brl->textRows = screenHeight;
brl->textColumns = screenWidth;
brl->buffer = &sourceImage[0][0];
memset(sourceImage, 0, sizeof(sourceImage));
deviceStatus = DEV_ONLINE;
return 1;
}
serialCloseDevice(serialDevice);
serialDevice = NULL;
}
return 0;
}
static wchar_t
getCharacter (BrailleDisplay *brl) {
for (;;) {
switch (getByte()) {
default:
break;
case BNI_CHARACTER:
return convertDotsToCharacter(textTable, translateInputCell(getByte()));
case BNI_SPACE:
switch (getByte()) {
default:
break;
case BNC_SPACE:
return WC_C(' ');
}
break;
case BNI_BACKSPACE:
switch (getByte() & 0X3F) {
default:
break;
case BNC_SPACE:
return WC_C('\b');
}
break;
case BNI_ENTER:
switch (getByte()) {
default:
break;
case BNC_SPACE:
return WC_C('\r');
}
break;
}
refreshCells(brl);
}
}
static int
brl_readCommand(BrailleDisplay *brl, KeyTableCommandContext context)
{
int res = EOF;
signed char status;
brl_key key;
status = braille_read(&key);
if(status == -1)
{
logMessage(LOG_ERR, "error in braille_read: %s", braille_geterror());
res = BRL_CMD_RESTARTBRL;
}
else if(status)
{
switch(key.type)
{
case BRL_NONE:
break;
case BRL_CURSOR:
res = BRL_BLK_ROUTE + key.code;
break;
case BRL_CMD:
switch(key.code)
{
case BRLK_UP:
res = BRL_BLK_PASSKEY + BRL_KEY_CURSOR_UP;
break;
case BRLK_DOWN:
res = BRL_BLK_PASSKEY + BRL_KEY_CURSOR_DOWN;
break;
case BRLK_RIGHT:
res = BRL_BLK_PASSKEY + BRL_KEY_CURSOR_RIGHT;
break;
case BRLK_LEFT:
res = BRL_BLK_PASSKEY + BRL_KEY_CURSOR_LEFT;
break;
case BRLK_INSERT:
res = BRL_BLK_PASSKEY + BRL_KEY_INSERT;
break;
case BRLK_HOME:
res = BRL_BLK_PASSKEY + BRL_KEY_HOME;
break;
case BRLK_END:
res = BRL_BLK_PASSKEY + BRL_KEY_END;
break;
case BRLK_PAGEUP:
res = BRL_BLK_PASSKEY + BRL_KEY_PAGE_UP;
break;
case BRLK_PAGEDOWN:
res = BRL_BLK_PASSKEY + BRL_KEY_PAGE_DOWN;
break;
case BRLK_BACKWARD:
res = BRL_CMD_FWINLT;
break;
case BRLK_FORWARD:
res = BRL_CMD_FWINRT;
break;
case BRLK_ABOVE:
res = BRL_CMD_LNUP;
break;
case BRLK_BELOW:
res = BRL_CMD_LNDN;
break;
default:
break;
}
break;
case BRL_KEY:
res = BRL_BLK_PASSDOTS | translateInputCell(key.braille);
break;
default:
break;
}
}
return res;
}
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_BLK_PASSDOTS | translateInputCell(packet[2]);
case 2: {
unsigned char column = packet[2];
if (column && (column <= brl->textColumns)) return BRL_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_BLK_PASSKEY + BRL_KEY_BACKSPACE;
case 0x0F: // right thumb
return BRL_BLK_PASSDOTS;
case 0x3F: // both thumbs
return BRL_BLK_PASSKEY + BRL_KEY_ENTER;
case 0X29: // key under dot 7
return BRL_BLK_PASSKEY + BRL_KEY_ESCAPE;
case 0X2A: // key under dot 8
return BRL_BLK_PASSKEY + BRL_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_BLK_PASSKEY + BRL_KEY_HOME;
case 0X38: // eight (40s only)
return BRL_BLK_PASSKEY + BRL_KEY_CURSOR_UP;
case 0X39: // nine (40s only)
return BRL_BLK_PASSKEY + BRL_KEY_PAGE_UP;
// second row of numeric pad
case 0X34: // four (40s only)
return BRL_BLK_PASSKEY + BRL_KEY_CURSOR_LEFT;
case 0X35: // five (40s only)
return BRL_CMD_CSRJMP_VERT;
case 0X36: // six (40s only)
return BRL_BLK_PASSKEY + BRL_KEY_CURSOR_RIGHT;
// third row of numeric pad
case 0X31: // one (40s only)
return BRL_BLK_PASSKEY + BRL_KEY_END;
case 0X32: // two (40s only)
return BRL_BLK_PASSKEY + BRL_KEY_CURSOR_DOWN;
case 0X33: // three (40s only)
return BRL_BLK_PASSKEY + BRL_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_BLK_PASSKEY + BRL_KEY_INSERT;
case 0X2F: // supp (40s only)
return BRL_BLK_PASSKEY + BRL_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;
}
static int
interpretSpaceChord (BrailleDisplay *brl, unsigned char dots, KeyTableCommandContext context) {
if (context == KTB_CTX_CHORDS)
return BRL_BLK_PASSDOTS | translateInputCell(dots) | BRL_DOTC;
switch (dots) {
default:
/* These are overridden by the Braille Note itself. */
case BNC_E: /* exit current operation */
case BNC_H: /* help for current operation */
case BNC_O: /* go to options menu */
case BNC_R: /* repeat current prompt */
case BNC_U: /* uppercase for computer braille */
case BNC_Z: /* exit current operation */
case BNC_PERCENT: /* acknowledge alarm */
case BNC_6: /* go to task menu */
case (BND_1 | BND_2 | BND_3 | BND_4 | BND_5 | BND_6): /* go to main menu */
break;
case BNC_SPACE:
return interpretCharacter(brl, dots, context);
case BNC_C:
return BRL_CMD_PREFMENU;
case BNC_D:
return BRL_CMD_PREFLOAD;
case BNC_F:
return getFunctionKey(brl);
case BNC_L:
temporaryRoutingOperation = BRL_BLK_SETLEFT;
return BRL_CMD_NOOP;
case BNC_M:
return BRL_CMD_MUTE;
case BNC_N:
persistentKeyboardMode = KBM_NAVIGATE;
temporaryKeyboardMode = persistentKeyboardMode;
return BRL_CMD_NOOP;
case BNC_P:
return BRL_CMD_PASTE;
case BNC_S:
return BRL_CMD_SAY_LINE;
case BNC_V: {
unsigned int vt;
if (getDecimalInteger(brl, &vt, 2, "virt term num")) {
if (!vt) vt = 0X100;
return BRL_BLK_SWITCHVT + (vt - 1);
}
return EOF;
}
case BNC_W:
return BRL_CMD_PREFSAVE;
case BNC_X: {
unsigned char character;
if (!getHexadecimalCharacter(brl, &character)) return EOF;
return BRL_BLK_PASSCHAR + character;
}
case BNC_LPAREN:
temporaryRoutingOperation = BRL_BLK_CLIP_NEW;
return BRL_CMD_NOOP;
case BNC_LBRACE:
temporaryRoutingOperation = BRL_BLK_CLIP_ADD;
return BRL_CMD_NOOP;
case BNC_RPAREN:
temporaryRoutingOperation = BRL_BLK_COPY_RECT;
return BRL_CMD_NOOP;
case BNC_RBRACE:
temporaryRoutingOperation = BRL_BLK_COPY_LINE;
return BRL_CMD_NOOP;
case BNC_BAR:
return BRL_CMD_CSRJMP_VERT;
case BNC_QUESTION:
return BRL_CMD_LEARN;
case (BND_2 | BND_3 | BND_5 | BND_6):
return BRL_BLK_PASSKEY + BRL_KEY_TAB;
case (BND_2 | BND_3):
return BRL_BLK_PASSKEY + BRL_KEY_CURSOR_LEFT;
case (BND_5 | BND_6):
return BRL_BLK_PASSKEY + BRL_KEY_CURSOR_RIGHT;
case (BND_2 | BND_5):
return BRL_BLK_PASSKEY + BRL_KEY_CURSOR_UP;
case (BND_3 | BND_6):
return BRL_BLK_PASSKEY + BRL_KEY_CURSOR_DOWN;
case (BND_2):
return BRL_BLK_PASSKEY + BRL_KEY_HOME;
case (BND_3):
return BRL_BLK_PASSKEY + BRL_KEY_END;
case (BND_5):
return BRL_BLK_PASSKEY + BRL_KEY_PAGE_UP;
case (BND_6):
return BRL_BLK_PASSKEY + BRL_KEY_PAGE_DOWN;
case (BND_3 | BND_5):
return BRL_BLK_PASSKEY + BRL_KEY_INSERT;
case (BND_2 | BND_5 | BND_6):
return BRL_BLK_PASSKEY + BRL_KEY_DELETE;
case (BND_2 | BND_6):
return BRL_BLK_PASSKEY + BRL_KEY_ESCAPE;
case (BND_4):
case (BND_4 | BND_5):
temporaryKeyboardMode = KBM_INPUT;
goto kbmFinish;
case (BND_4 | BND_3):
case (BND_4 | BND_5 | BND_3):
temporaryKeyboardMode = KBM_INPUT_7;
goto kbmFinish;
case (BND_4 | BND_3 | BND_6):
case (BND_4 | BND_5 | BND_3 | BND_6):
temporaryKeyboardMode = KBM_INPUT_78;
goto kbmFinish;
case (BND_4 | BND_6):
case (BND_4 | BND_5 | BND_6):
temporaryKeyboardMode = KBM_INPUT_8;
kbmFinish:
if (dots & BND_5) persistentKeyboardMode = temporaryKeyboardMode;
return BRL_CMD_NOOP;
}
return EOF;
}