gmain_dj.c

字体缩放显示

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  };


  void  Print_8x8_Mono( int  x, int  y, unsigned char  c )
  {
    int             offset, i;
    unsigned char*  bitm;

    if ( !Vio )
      return;

    offset = x + y * vio_ScanLineWidth * 8;
    bitm   = font_8x8 + (int)c * 8;

    for ( i = 0; i < 8; i++ )
    {
      dosmemput( bitm, 1, (unsigned long)(Vio+offset) );
      bitm++;
      offset += vio_ScanLineWidth;
    }
  }


  void  Print_8x8_Gray( int  x, int  y, unsigned char  c )
  {
    int             offset, i, bit;
    unsigned char * bitm, black = 0, white = 0xF;

    if ( !Vio )
      return;

    offset = x * 8 + y * vio_ScanLineWidth * 8;
    bitm   = font_8x8 + (int)c * 8;

    for ( i = 0; i < 8; i++ )
    {
      bit = 0x80;
      while ( bit > 0 )
      {
        if ( bit & *bitm )
          dosmemput( &white, 1, (unsigned long)(Vio+offset) );
        else
          dosmemput( &black, 1, (unsigned long)(Vio+offset) );

        bit >>= 1;
        offset++;
      }
      offset += vio_ScanLineWidth - 8;
      bitm++;
    }
  }


  int  SetGraphScreen( int  mode )
  {
    gcursor_x = 0;
    gcursor_y = 0;

    switch( mode )
    {
    case Graphics_Mode_Mono:
      if ( !Driver_Set_Graphics( mode ) )
        return FAILURE;

      gwindow_width  = vio_ScanLineWidth;
      gwindow_height = vio_Height / 8;

      Print_8x8_Char = Print_8x8_Mono;
      break;

    case Graphics_Mode_Gray:
      if ( !Driver_Set_Graphics( mode ) )
        return FAILURE;

      gwindow_width  = vio_ScanLineWidth / 8;
      gwindow_height = vio_Height / 8;

      Print_8x8_Char = Print_8x8_Gray;
      break;

    default:
      /* Invalid function call */
      return FAILURE;
    }

    return SUCCESS;
  }


  /* restore previous (or text) video mode */

  int  RestoreScreen( void )
  {
    gcursor_x      = 0;
    gcursor_y      = 0;
    gwindow_height = 0;
    gwindow_height = 0;

    return Driver_Restore_Mode();
  }


  void  Display_Bitmap_On_Screen( char*  buffer, int  line, int  col )
  {
    Driver_Display_Bitmap( buffer, line, col );
  }


  void  Goto_XY( int  x, int  y )
  {
    gcursor_x = x;
    gcursor_y = y;
  }


  void  Print_Str( char*  string )
  {
    if ( !string ) return;

    while ( *string )
    {
      switch ( *string )
      {
      case '\n':
        gcursor_x = 0;
        gcursor_y++;
        if ( gcursor_y > gwindow_height ) gcursor_y = 0;
        break;

      default:
        (*Print_8x8_Char)( gcursor_x, gcursor_y, *string );

        gcursor_x++;

        if ( gcursor_x >= gwindow_width )
        {
          gcursor_x = 0;
          gcursor_y++;

          if ( gcursor_y >= gwindow_height ) gcursor_y = 0;
        }
      }
      string++;
    }
  }


  void  Print_XY( int  x, int  y, char*  string )
  {
    Goto_XY( x, y );
    Print_Str( string );
  }

/* End */