src/hci/mucurses/ansi_screen.c

   1 #include <stdio.h>
   2 #include <curses.h>
   3 #include <console.h>
   4
   5 unsigned short _COLS = 80;
   6 unsigned short _LINES = 24;
   7
   8 static void ansiscr_reset ( struct _curses_screen *scr ) {
   9         /* Reset terminal attributes and clear screen */
  10         scr->attrs = 0;
  11         scr->curs_x = 0;
  12         scr->curs_y = 0;
  13         printf ( "\033[0m\033[2J\033[1;1H" );
  14 }
  15
  16 static void ansiscr_movetoyx ( struct _curses_screen *scr,
  17                                unsigned int y, unsigned int x ) {
  18         if ( ( x != scr->curs_x ) || ( y != scr->curs_y ) ) {
  19                 /* ANSI escape sequence to update cursor position */
  20                 printf ( "\033[%d;%dH", ( y + 1 ), ( x + 1 ) );
  21                 scr->curs_x = x;
  22                 scr->curs_y = y;
  23         }
  24 }
  25
  26 static void ansiscr_putc ( struct _curses_screen *scr, chtype c ) {
  27         unsigned int character = ( c & A_CHARTEXT );
  28         attr_t attrs = ( c & ( A_ATTRIBUTES | A_COLOR ) );
  29         int bold = ( attrs & A_BOLD );
  30         attr_t cpair = PAIR_NUMBER ( attrs );
  31         short fcol;
  32         short bcol;
  33
  34         /* Update attributes if changed */
  35         if ( attrs != scr->attrs ) {
  36                 scr->attrs = attrs;
  37                 pair_content ( cpair, &fcol, &bcol );
  38                 /* ANSI escape sequence to update character attributes */
  39                 printf ( "\033[0;%d;3%d;4%dm", ( bold ? 1 : 22 ), fcol, bcol );
  40         }
  41
  42         /* Print the actual character */
  43         putchar ( character );
  44
  45         /* Update expected cursor position */
  46         if ( ++(scr->curs_x) == _COLS ) {
  47                 scr->curs_x = 0;
  48                 ++scr->curs_y;
  49         }
  50 }
  51
  52 static int ansiscr_getc ( struct _curses_screen *scr __unused ) {
  53         return getchar();
  54 }
  55
  56 static bool ansiscr_peek ( struct _curses_screen *scr __unused ) {
  57         return iskey();
  58 }
  59
  60 SCREEN _ansi_screen = {
  61         .init           = ansiscr_reset,
  62         .exit           = ansiscr_reset,
  63         .movetoyx       = ansiscr_movetoyx,
  64         .putc           = ansiscr_putc,
  65         .getc           = ansiscr_getc,
  66         .peek           = ansiscr_peek,
  67 };