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