psobjs.c

奇趣公司比较新的qt/emd版本

    parser->cursor = old_cursor;
    parser->limit  = old_limit;

  Exit:
    return error;
  }


  FT_LOCAL_DEF( FT_Long )
  ps_parser_to_int( PS_Parser  parser )
  {
    ps_parser_skip_spaces( parser );
    return PS_Conv_ToInt( &parser->cursor, parser->limit );
  }


  /* first character must be `<' if `delimiters' is non-zero */

  FT_LOCAL_DEF( FT_Error )
  ps_parser_to_bytes( PS_Parser  parser,
                      FT_Byte*   bytes,
                      FT_Long    max_bytes,
                      FT_Long*   pnum_bytes,
                      FT_Bool    delimiters )
  {
    FT_Error  error = PSaux_Err_Ok;
    FT_Byte*  cur;


    ps_parser_skip_spaces( parser );
    cur = parser->cursor;

    if ( cur >= parser->limit )
      goto Exit;

    if ( delimiters )
    {
      if ( *cur != '<' )
      {
        FT_ERROR(( "ps_parser_to_bytes: Missing starting delimiter `<'\n" ));
        error = PSaux_Err_Invalid_File_Format;
        goto Exit;
      }

      cur++;
    }

    *pnum_bytes = PS_Conv_ASCIIHexDecode( &cur,
                                          parser->limit,
                                          bytes,
                                          max_bytes );

    if ( delimiters )
    {
      if ( cur < parser->limit && *cur != '>' )
      {
        FT_ERROR(( "ps_tobytes: Missing closing delimiter `>'\n" ));
        error = PSaux_Err_Invalid_File_Format;
        goto Exit;
      }

      cur++;
    }

    parser->cursor = cur;

  Exit:
    return error;
  }


  FT_LOCAL_DEF( FT_Fixed )
  ps_parser_to_fixed( PS_Parser  parser,
                      FT_Int     power_ten )
  {
    ps_parser_skip_spaces( parser );
    return PS_Conv_ToFixed( &parser->cursor, parser->limit, power_ten );
  }


  FT_LOCAL_DEF( FT_Int )
  ps_parser_to_coord_array( PS_Parser  parser,
                            FT_Int     max_coords,
                            FT_Short*  coords )
  {
    ps_parser_skip_spaces( parser );
    return ps_tocoordarray( &parser->cursor, parser->limit,
                            max_coords, coords );
  }


  FT_LOCAL_DEF( FT_Int )
  ps_parser_to_fixed_array( PS_Parser  parser,
                            FT_Int     max_values,
                            FT_Fixed*  values,
                            FT_Int     power_ten )
  {
    ps_parser_skip_spaces( parser );
    return ps_tofixedarray( &parser->cursor, parser->limit,
                            max_values, values, power_ten );
  }


#if 0

  FT_LOCAL_DEF( FT_String* )
  T1_ToString( PS_Parser  parser )
  {
    return ps_tostring( &parser->cursor, parser->limit, parser->memory );
  }


  FT_LOCAL_DEF( FT_Bool )
  T1_ToBool( PS_Parser  parser )
  {
    return ps_tobool( &parser->cursor, parser->limit );
  }

#endif /* 0 */


  FT_LOCAL_DEF( void )
  ps_parser_init( PS_Parser  parser,
                  FT_Byte*   base,
                  FT_Byte*   limit,
                  FT_Memory  memory )
  {
    parser->error  = PSaux_Err_Ok;
    parser->base   = base;
    parser->limit  = limit;
    parser->cursor = base;
    parser->memory = memory;
    parser->funcs  = ps_parser_funcs;
  }


  FT_LOCAL_DEF( void )
  ps_parser_done( PS_Parser  parser )
  {
    FT_UNUSED( parser );
  }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                            T1 BUILDER                         *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    t1_builder_init                                                    */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Initializes a given glyph builder.                                 */
  /*                                                                       */
  /* <InOut>                                                               */
  /*    builder :: A pointer to the glyph builder to initialize.           */
  /*                                                                       */
  /* <Input>                                                               */
  /*    face    :: The current face object.                                */
  /*                                                                       */
  /*    size    :: The current size object.                                */
  /*                                                                       */
  /*    glyph   :: The current glyph object.                               */
  /*                                                                       */
  /*    hinting :: Whether hinting should be applied.                      */
  /*                                                                       */
  FT_LOCAL_DEF( void )
  t1_builder_init( T1_Builder    builder,
                   FT_Face       face,
                   FT_Size       size,
                   FT_GlyphSlot  glyph,
                   FT_Bool       hinting )
  {
    builder->parse_state = T1_Parse_Start;
    builder->load_points = 1;

    builder->face   = face;
    builder->glyph  = glyph;
    builder->memory = face->memory;

    if ( glyph )
    {
      FT_GlyphLoader  loader = glyph->internal->loader;


      builder->loader  = loader;
      builder->base    = &loader->base.outline;
      builder->current = &loader->current.outline;
      FT_GlyphLoader_Rewind( loader );

      builder->hints_globals = size->internal;
      builder->hints_funcs   = 0;

      if ( hinting )
        builder->hints_funcs = glyph->internal->glyph_hints;
    }

    if ( size )
    {
      builder->scale_x = size->metrics.x_scale;
      builder->scale_y = size->metrics.y_scale;
    }

    builder->pos_x = 0;
    builder->pos_y = 0;

    builder->left_bearing.x = 0;
    builder->left_bearing.y = 0;
    builder->advance.x      = 0;
    builder->advance.y      = 0;

    builder->funcs = t1_builder_funcs;
  }


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    t1_builder_done                                                    */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Finalizes a given glyph builder.  Its contents can still be used   */
  /*    after the call, but the function saves important information       */
  /*    within the corresponding glyph slot.                               */
  /*                                                                       */
  /* <Input>                                                               */
  /*    builder :: A pointer to the glyph builder to finalize.             */
  /*                                                                       */
  FT_LOCAL_DEF( void )
  t1_builder_done( T1_Builder  builder )
  {
    FT_GlyphSlot  glyph = builder->glyph;


    if ( glyph )
      glyph->outline = *builder->base;
  }


  /* check that there is enough space for `count' more points */
  FT_LOCAL_DEF( FT_Error )
  t1_builder_check_points( T1_Builder  builder,
                           FT_Int      count )
  {
    return FT_GLYPHLOADER_CHECK_POINTS( builder->loader, count, 0 );
  }


  /* add a new point, do not check space */
  FT_LOCAL_DEF( void )
  t1_builder_add_point( T1_Builder  builder,
                        FT_Pos      x,
                        FT_Pos      y,
                        FT_Byte     flag )
  {
    FT_Outline*  outline = builder->current;


    if ( builder->load_points )
    {
      FT_Vector*  point   = outline->points + outline->n_points;
      FT_Byte*    control = (FT_Byte*)outline->tags + outline->n_points;


      if ( builder->shift )
      {
        x >>= 16;
        y >>= 16;
      }
      point->x = x;
      point->y = y;
      *control = (FT_Byte)( flag ? FT_CURVE_TAG_ON : FT_CURVE_TAG_CUBIC );

      builder->last = *point;
    }
    outline->n_points++;
  }


  /* check space for a new on-curve point, then add it */
  FT_LOCAL_DEF( FT_Error )
  t1_builder_add_point1( T1_Builder  builder,
                         FT_Pos      x,
                         FT_Pos      y )
  {
    FT_Error  error;


    error = t1_builder_check_points( builder, 1 );
    if ( !error )
      t1_builder_add_point( builder, x, y, 1 );

    return error;
  }


  /* check space for a new contour, then add it */
  FT_LOCAL_DEF( FT_Error )
  t1_builder_add_contour( T1_Builder  builder )
  {
    FT_Outline*  outline = builder->current;
    FT_Error     error;


    if ( !builder->load_points )
    {
      outline->n_contours++;
      return PSaux_Err_Ok;
    }

    error = FT_GLYPHLOADER_CHECK_POINTS( builder->loader, 0, 1 );
    if ( !error )
    {
      if ( outline->n_contours > 0 )
        outline->contours[outline->n_contours - 1] =
          (short)( outline->n_points - 1 );

      outline->n_contours++;
    }

    return error;
  }


  /* if a path was begun, add its first on-curve point */
  FT_LOCAL_DEF( FT_Error )
  t1_builder_start_point( T1_Builder  builder,
                          FT_Pos      x,
                          FT_Pos      y )
  {
    FT_Error  error = PSaux_Err_Invalid_File_Format;


    /* test whether we are building a new contour */

    if ( builder->parse_state == T1_Parse_Have_Path )
      error = PSaux_Err_Ok;
    else if ( builder->parse_state == T1_Parse_Have_Moveto )
    {
      builder->parse_state = T1_Parse_Have_Path;
      error = t1_builder_add_contour( builder );
      if ( !error )
        error = t1_builder_add_point1( builder, x, y );
    }

    return error;
  }


  /* close the current contour */
  FT_LOCAL_DEF( void )
  t1_builder_close_contour( T1_Builder  builder )
  {
    FT_Outline*  outline = builder->current;


    if ( !outline )
      return;

    /* XXXX: We must not include the last point in the path if it */
    /*       is located on the first point.                       */
    if ( outline->n_points > 1 )
    {
      FT_Int      first   = 0;
      FT_Vector*  p1      = outline->points + first;
      FT_Vector*  p2      = outline->points + outline->n_points - 1;
      FT_Byte*    control = (FT_Byte*)outline->tags + outline->n_points - 1;


      if ( outline->n_contours > 1 )
      {
        first = outline->contours[outline->n_contours - 2] + 1;
        p1    = outline->points + first;
      }

      /* `delete' last point only if it coincides with the first */
      /* point and it is not a control point (which can happen). */
      if ( p1->x == p2->x && p1->y == p2->y )
        if ( *control == FT_CURVE_TAG_ON )
          outline->n_points--;
    }

    if ( outline->n_contours > 0 )
      outline->contours[outline->n_contours - 1] =
        (short)( outline->n_points - 1 );
  }


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                            OTHER                              *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  FT_LOCAL_DEF( void )
  t1_decrypt( FT_Byte*   buffer,
              FT_Offset  length,
              FT_UShort  seed )
  {
    PS_Conv_EexecDecode( &buffer,
                         buffer + length,
                         buffer,
                         length,
                         &seed );
  }


/* END */