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/* bd-tsi.c, TSI specific key bindings and display commands
*
* dotscreen
* A braille interface to unix tty terminals
* Authors: Hadi Bargi Rangin bargi@dots.physics.orst.edu
* Bill Barry barryb@dots.physics.orst.edu
*
* Copyright (c) 1995 by Science Access Project, Oregon State University.
*
*
* 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 3, 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 (see the file COPYING); if not, see
* https://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
****************************************************************
*/
#include "config.h"
#include "screen.h"
#include "extern.h"
#include "braille.h"
#ifdef HAVE_BRAILLE
extern struct display *display;
struct key2rc {
int key;
int nr;
char *arg1;
char *arg2;
};
static int tsi_ctype = 1; /* cursor type, 0,1,2 */
static int tsi_line_type; /* indicates number of cells on powerbraille
display 01=20 cells 02=40 cells 03=80 cells */
static int display_status_tsi __P((void));
static int write_line_tsi __P((char*, int, int));
static void buttonpress_tsi __P((structkey2rc*));
static void buttonpress_navigator_40 __P((void));
static void buttonpress_powerbraille_40 __P((void));
static void buttonpress_powerbraille_80 __P((void));
int
bd_init_powerbraille_40()
{
bd.write_line_braille = write_line_tsi;
bd.buttonpress = buttonpress_powerbraille_40;
bd.bd_response_test = display_status_tsi;
bd.bd_ncells = 40;
tsi_line_type = 2;
return 0;
}
int
bd_init_powerbraille_80()
{
bd.write_line_braille = write_line_tsi;
bd.buttonpress = buttonpress_powerbraille_80;
bd.bd_response_test = display_status_tsi;
bd.bd_ncells = 80;
tsi_line_type = 3;
return 0;
}
int
bd_init_navigator_40()
{
bd.write_line_braille = write_line_tsi;
bd.buttonpress = buttonpress_navigator_40;
bd.bd_response_test = display_status_tsi;
bd.bd_ncells = 40;
tsi_line_type = 2;
return 0;
}
static int
display_status_tsi()
{
char obuf[3], ibuf[20];
int r;
obuf[0] = 0xff;
obuf[1] = 0xff;
obuf[2] = 0x0a;
r = read(bd.bd_fd, ibuf, 20); /* flush the input port */
r = write(bd.bd_fd, obuf, 3);
if (r != 3)
return -1;
/* we have written to the display asking for a response
we wait 1 second for the response, read it and if no
response we wait 2 seconds, if still no response,
return -1 to indicate no braille display available */
sleep(1);
r = read(bd.bd_fd, ibuf, 2);
if (r == -1) {
sleep(2);
r = read(bd.bd_fd, ibuf, 2);
}
debug2("first chars from braille display %d %d\n", ibuf[0], ibuf[1]);
if (r != 2 || ibuf[0] != 0 || ibuf[1] != 5)
return -1;
r = read(bd.bd_fd, ibuf, 2);
if (r != 2)
return -1;
debug2("braille display size:%d dots:%d\n", ibuf[0], ibuf[1]);
bd.bd_ncells = (unsigned char)ibuf[0];
if (bd.bd_ncells <= 1)
return -1;
r = read(bd.bd_fd, ibuf, 1);
if (r != 1)
return -1;
if (ibuf[0] == 'V')
r = read(bd.bd_fd, ibuf, 3);
else
r = read(bd.bd_fd, ibuf + 1, 2) + 1;
if (r != 3)
return -1;
ibuf[3] = 0;
debug1("braille display version %s\n", ibuf);
bd.bd_version = atof(ibuf);
return 0;
}
static int
write_line_tsi(char *bstr, int line_length, int cursor_pos)
{
int obp, i;
bd.bd_obuf[0] = 0xff;
bd.bd_obuf[1] = 0xff;
bd.bd_obuf[2] = tsi_line_type;
bd.bd_obuf[3] = 0x07;
bd.bd_obuf[4] = cursor_pos;
bd.bd_obuf[5] = tsi_ctype;
obp = 6;
for (i = 0; i < line_length; i++) {
bd.bd_obuf[2*i + obp] = 0;
bd.bd_obuf[2*i + 1 + obp] = bd.bd_btable[(int)(unsigned char)bstr[i]];
}
for (i = line_length; i < bd.bd_ncells; i++) {
bd.bd_obuf[2*i + obp] = 0;
bd.bd_obuf[2*i + 1 + obp] = bd.bd_btable[(int)' '];
}
bd.bd_obuflen = 2*bd.bd_ncells + obp;
return 0;
}
static struct key2rc keys_navigator_40[] = {
{0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
{0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
{0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
{0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
{0x2000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
{0x8000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
{0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
{0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
{0x6000, RC_BD_UPPER_LEFT, 0, 0}, /* 6, 7 */
{0xc000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
{0x12000, RC_BD_LOWER_LEFT, 0, 0}, /* 6, 9 */
{0x18000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
{0xa000, RC_BD_INFO, "1032", 0}, /* bc 6, 8 */
{0x14000000, RC_BD_INFO, "2301", 0}, /* sc 1, 3 */
{0x4008000, RC_BD_INFO, "3330", 0}, /* bc+sc 1, 8 */
{0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
{0x8004000, RC_BD_EIGHTDOT, 0, 0}, /* 2, 7 */
{0x40000000, RC_STUFF, "\015", 0}, /* 5 */
{0x20000, RC_BD_LINK, 0, 0}, /* 10 */
{0x10002000, RC_BD_SCROLL, 0, 0}, /* 3, 6 */
{0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
{0x14000, RC_BD_SKIP, 0, 0}, /* 7, 9*/
{-1, RC_ILLEGAL, 0, 0}
};
static struct key2rc keys_powerbraille_40[] = {
{0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
{0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
{0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
{0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
{0x2000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
{0x8000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
{0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
{0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
{0x8002000, RC_BD_UPPER_LEFT, 0, 0}, /* 2, 6 */
{0xc000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
{0x20002000, RC_BD_LOWER_LEFT, 0, 0}, /* 3, 6 */
{0x18000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
{0x8008000, RC_BD_INFO, "1032", 0}, /* bc 2, 8 */
{0x6000, RC_BD_INFO, "2301", 0}, /* 6, 7 */
{0x8004000, RC_BD_INFO, "3330", 0}, /* bc+sc 2, 7 */
{0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
{0x20008000, RC_BD_EIGHTDOT, 0, 0}, /* 4, 6 */
{0x40000000, RC_STUFF, "\015", 0}, /* 5 */
{0x20000, RC_BD_LINK, 0, 0}, /* 10 */
{0xa000, RC_BD_SCROLL, 0, 0}, /* 6, 8 */
{0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
{0x20004000, RC_BD_SKIP, 0, 0}, /* 4, 7 */
{-1, RC_ILLEGAL, 0, 0}
};
static struct key2rc keys_powerbraille_80[] = {
{0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
{0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
{0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
{0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
{0x40000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
{0x100000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
{0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
{0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
{0x44000, RC_BD_UPPER_LEFT, 0, 0}, /* 6, 7 */
{0x104000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
{0x50000, RC_BD_LOWER_LEFT, 0, 0}, /* 6, 9 */
{0x110000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
{0x8100000, RC_BD_INFO, "1032", 0}, /* 2, 8 */
{0x8040000, RC_BD_INFO, "2301", 0}, /* 2, 6 */
{0x140000, RC_BD_INFO, "3330", 0}, /* 6, 8 */
{0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
{0x8004000, RC_BD_EIGHTDOT, 0, 0}, /* 2, 7 */
{0x40000000, RC_STUFF, "\015", 0}, /* 5 */
{0x20000, RC_BD_LINK, 0, 0}, /* 10 */
{0x20004000, RC_BD_SCROLL, 0, 0}, /* 4, 7 */
{0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
{0x40010000, RC_BD_SKIP, 0, 0}, /* 5, 9 */
{-1, RC_ILLEGAL, 0, 0}
};
static void
buttonpress_tsi(struct key2rc *tab)
{
int i, nb;
int bkeys;
unsigned char buf[10];
nb = read(bd.bd_fd, buf, 10);
debug1("buttonpress_tsi: read %d bytes\n", nb);
for (i = 0, bkeys = 0; i < nb; i++) {
switch (buf[i] & 0xE0) {
case 0x00: bkeys += ((int)(buf[i] & 0x1f)); break;
case 0x20: bkeys += ((int)(buf[i] & 0x1f) << 5); break;
case 0x40: bkeys += ((int)(buf[i] & 0x1f) << 9); break;
case 0x60: bkeys += ((int)(buf[i] & 0x1f) << 13); break;
case 0xA0: bkeys += ((int)(buf[i] & 0x1f) << 18); break;
case 0xC0: bkeys += ((int)(buf[i] & 0x1f) << 22); break;
case 0xE0: bkeys += ((int)(buf[i] & 0x1f) << 26); break;
default: break;
}
}
debug1("bkeys %x\n", bkeys);
for (i = 0; tab[i].key != -1; i++)
if (bkeys == tab[i].key)
break;
debug1("bkey index %d\n", i);
if (tab[i].key != -1 && tab[i].nr != RC_ILLEGAL) {
char *args[3];
int argl[2];
struct action act;
args[0] = tab[i].arg1;
args[1] = tab[i].arg2;
args[2] = 0;
argl[0] = args[0] ? strlen(args[0]) : 0;
argl[1] = args[1] ? strlen(args[1]) : 0;
act.nr = tab[i].nr;
act.args = args;
act.argl = argl;
display = bd.bd_dpy;
DoAction(&act, -2);
}
}
static void
buttonpress_navigator_40()
{
buttonpress_tsi(keys_navigator_40);
}
static void
buttonpress_powerbraille_40()
{
buttonpress_tsi(keys_powerbraille_40);
}
static void
buttonpress_powerbraille_80()
{
buttonpress_tsi(keys_powerbraille_80);
}
#endif /* HAVE_BRAILLE */
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