/* the one already displayed */
static int brl_writeWindow(BrailleDisplay *brl, const wchar_t *text)
{
brlapi_writeArguments_t arguments = BRLAPI_WRITEARGUMENTS_INITIALIZER;
int vt = currentVirtualTerminal();
if (vt == SCR_NO_VT) {
/* should leave display */
if (prevShown) {
brlapi_write(&arguments);
prevShown = 0;
}
} else {
if (prevShown &&
(memcmp(prevData,brl->buffer,displaySize) == 0) &&
(!text || (wmemcmp(prevText,text,displaySize) == 0)) &&
(brl->cursor == prevCursor)) {
return 1;
}
unsigned char and[displaySize];
memset(and, 0, sizeof(and));
arguments.andMask = and;
arguments.orMask = brl->buffer;
if (text) {
arguments.text = (char*) text;
arguments.textSize = displaySize * sizeof(wchar_t);
arguments.charset = (char*) getWcharCharset();
}
arguments.regionBegin = 1;
arguments.regionSize = displaySize;
arguments.cursor = (brl->cursor != BRL_NO_CURSOR)? (brl->cursor + 1): BRLAPI_CURSOR_OFF;
if (brlapi_write(&arguments)==0) {
memcpy(prevData,brl->buffer,displaySize);
wmemcpy(prevText,text,displaySize);
prevCursor = brl->cursor;
prevShown = 1;
} else {
logMessage(LOG_ERR, "write: %s", brlapi_strerror(&brlapi_error));
restart = 1;
}
}
return 1;
}
static void showDots(void)
{
unsigned int x, y;
brlapi_keyCode_t k;
if (brlapi_getDisplaySize(&x, &y)<0) {
brlapi_perror("failed");
exit(PROG_EXIT_FATAL);
}
if (brlapi_enterTtyMode(-1, NULL)<0) {
brlapi_perror("enterTtyMode");
exit(PROG_EXIT_FATAL);
}
if (x*y<DOTS_TOTALLEN) {
fprintf(stderr,"can't show dots with a braille display with less than %d cells\n",(int)DOTS_TOTALLEN);
exit(PROG_EXIT_SEMANTIC);
}
{
char text[x*y+1];
unsigned char or[x*y];
brlapi_writeArguments_t wa = BRLAPI_WRITEARGUMENTS_INITIALIZER;
fprintf(stderr,"Showing dot patterns\n");
memcpy(text,DOTS_TEXT,DOTS_TEXTLEN);
memset(text+DOTS_TEXTLEN,' ',sizeof(text)-DOTS_TEXTLEN);
text[x*y] = 0;
wa.regionBegin = 1;
wa.regionSize = sizeof(or);
wa.text = text;
memset(or,0,sizeof(or));
or[DOTS_TEXTLEN+0] = BRL_DOT_1;
or[DOTS_TEXTLEN+1] = BRL_DOT_2;
or[DOTS_TEXTLEN+2] = BRL_DOT_3;
or[DOTS_TEXTLEN+3] = BRL_DOT_4;
or[DOTS_TEXTLEN+4] = BRL_DOT_5;
or[DOTS_TEXTLEN+5] = BRL_DOT_6;
or[DOTS_TEXTLEN+6] = BRL_DOT_7;
or[DOTS_TEXTLEN+7] = BRL_DOT_8;
wa.orMask = or;
if (brlapi_write(&wa)<0) {
brlapi_perror("brlapi_write");
exit(PROG_EXIT_FATAL);
}
}
brlapi_readKey(1, &k);
}
