src/braille.h

   1 /*
   2  *      Authors:  Hadi Bargi Rangin  bargi@dots.physics.orst.edu
   3  *                Bill Barry         barryb@dots.physics.orst.edu
   4  *                Randy Lundquist    randyl@dots.physics.orst.edu
   5  *
   6  * Modifications Copyright (c) 1995 by
   7  * Science Access Project, Oregon State University.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3, or (at your option)
  12  * any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program (see the file COPYING); if not, see
  21  * http://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  23  *
  24  ****************************************************************
  25  * $Id$ GNU
  26  */
  27
  28 #ifdef HAVE_BRAILLE
  29
  30 extern void StartBraille __P((void));
  31
  32 struct braille_display
  33 {
  34   struct display *bd_dpy;       /* display we are connected to */
  35   int   bd_start_braille;       /* screenrc var to request to turn braille on */
  36   int   bd_using_braille;       /* all is fine, use braille */
  37   struct event bd_readev;
  38   struct event bd_writeev;
  39   struct event bd_selectev;
  40   int   bd_fd;          /* file descriptor */
  41   int   bd_obuflen;     /* current number of charactors in output buffer */
  42   char  bd_obuf[IOSIZE];
  43   int   bd_info;        /* default, no info, 0,1,2,3 */
  44   int   bd_ncrc;        /* default 1, numbers of cells on the right side of real cursor, 1...bd_width */
  45   int   bd_skip;        /* default off, on/off */
  46   int   bd_link;        /* default, linked, on/off */
  47   int   bd_width;       /* length of braille display to use, <=bd_ncells */
  48   int   bd_scroll;      /* default on, scroll on/off */
  49   char *bd_braille_table;       /* braille code */
  50
  51   int   bd_bell;        /* bell used for navigation on/off */
  52   int   bd_ncells;      /* real number of cells on braille display */
  53   int   bd_eightdot;    /* eightdot on/off */
  54   int   bd_baud;        /* communication baudrate between port and braille display */
  55   char *bd_port;        /* serial port to use */
  56   char *bd_type;        /* kind of braille display */
  57   double bd_version;    /* rom version of braille display */
  58   char  bd_btable[256]; /* braille translation table */
  59
  60   /* functions which communicate with braille displays */
  61   int (*write_line_braille) __P((char [],int, int));
  62   void (*buttonpress) __P((void));
  63   int (*bd_response_test) __P((void));
  64
  65   int   bd_refreshing;  /* are we doing a refresh? */
  66   char  bd_line[40+1];  /* bd_ncells chars displayed on braille */
  67   int   bd_cursorpos;   /* cursor position on braille */
  68   char  bd_oline[40+1]; /* bd_ncells chars displayed on braille */
  69   int   bd_sx, bd_sy;   /* screen cursor pos */
  70   int   bd_moved;       /* used braille move keys */
  71
  72   int   bd_searching;   /* are we seaching (bd_skip is on) */
  73   int   bd_searchmax;   /* search: max x */
  74   int   bd_searchmin;   /* search: min x */
  75   int   bd_searchstart;
  76   int   bd_searchend;
  77 };
  78
  79 extern struct braille_display bd;
  80
  81 #define BD_FORE bd.bd_dpy->d_fore
  82
  83 #endif