Hi.
I was wondering whether it was possible to add a dot display to the tt
driver. I am aware of the XW driver, but it has more library
dependencies, and in many distributions, you have to configure it to use
an utf8-aware font. However, most terminal emulators have support for utf-8.
I wrote the following proof-of-concept patch for the driver. It just
adds an additional line with braille characters. However, it would
probably be better to make this configurable, and I am not quite sure
how the configuration system works.
Regards, Christoph
diff --git a/Drivers/Braille/TTY/braille.c b/Drivers/Braille/TTY/braille.c
index cdb2242..dc8537e 100644
--- a/Drivers/Braille/TTY/braille.c
+++ b/Drivers/Braille/TTY/braille.c
@@ -282,6 +282,27 @@ brl_writeWindow (BrailleDisplay *brl, const wchar_t
*text) {
int row;
for (row=0; row<brl->textRows; row++) {
writeText(&text[row*brl->textColumns], brl->textColumns);
+ addstr("\r\n");
+
+ wchar_t converted[brl->textColumns];
+ int col;
+ for (col = 0; col < brl->textColumns; ++col) {
+ /* from the XW driver */
+ unsigned char c = brl->buffer[col];
+ c =
+ (!!(c&BRL_DOT1))<<0
+ |(!!(c&BRL_DOT2))<<1
+ |(!!(c&BRL_DOT3))<<2
+ |(!!(c&BRL_DOT4))<<3
+ |(!!(c&BRL_DOT5))<<4
+ |(!!(c&BRL_DOT6))<<5
+ |(!!(c&BRL_DOT7))<<6
+ |(!!(c&BRL_DOT8))<<7;
+ converted[col] = 0x2800 | c;
+ }
+ writeText(converted, brl->textColumns);
+
+ // writeText(&text[row*brl->textColumns], brl->textColumns);
if (row < brl->textRows-1)
addstr("\r\n");
}
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