Method: Writeexcel::Format#get_font

Defined in:
lib/writeexcel/format.rb

#get_font ⇒ Object

Generate an Excel BIFF FONT record.



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# File 'lib/writeexcel/format.rb', line 337

def get_font  # :nodoc:

  #   my $record;     # Record identifier
  #   my $length;     # Record length

  #   my $dyHeight;   # Height of font (1/20 of a point)
  #   my $grbit;      # Font attributes
  #   my $icv;        # Index to color palette
  #   my $bls;        # Bold style
  #   my $sss;        # Superscript/subscript
  #   my $uls;        # Underline
  #   my $bFamily;    # Font family
  #   my $bCharSet;   # Character set
  #   my $reserved;   # Reserved
  #   my $cch;        # Length of font name
  #   my $rgch;       # Font name
  #   my $encoding;   # Font name character encoding


  dyHeight   = @size * 20
  icv        = @color
  bls        = @bold
  sss        = @font_script
  uls        = @underline
  bFamily    = @font_family
  bCharSet   = @font_charset
  rgch       = @font
  encoding   = @font_encoding

  ruby_19 { rgch = convert_to_ascii_if_ascii(rgch) }

  # Handle utf8 strings
  if is_utf8?(rgch)
    rgch = utf8_to_16be(rgch)
    encoding = 1
  end

  cch = rgch.bytesize
  #
  # Handle Unicode font names.
  if (encoding == 1)
    raise "Uneven number of bytes in Unicode font name" if cch % 2 != 0
    cch  /= 2 if encoding !=0
    rgch  = utf16be_to_16le(rgch)
  end

  record     = 0x31
  length     = 0x10 + rgch.bytesize
  reserved   = 0x00

  grbit      = 0x00
  grbit     |= 0x02 if @italic != 0
  grbit     |= 0x08 if @font_strikeout != 0
  grbit     |= 0x10 if @font_outline != 0
  grbit     |= 0x20 if @font_shadow != 0


  header = [record, length].pack("vv")
  data   = [dyHeight, grbit, icv, bls,
            sss, uls, bFamily,
            bCharSet, reserved, cch, encoding].pack('vvvvvCCCCCC')

  header + data + rgch
end