Method: Spreadsheet::Excel::Writer::Workbook#write_font

Defined in:
lib/spreadsheet/excel/writer/workbook.rb

#write_font(workbook, writer, font) ⇒ Object 



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# File 'lib/spreadsheet/excel/writer/workbook.rb', line 217

def write_font workbook, writer, font
  # TODO: Colors/Palette index
  size = font.size * TWIPS
  color = SEDOC_ROLOC[font.color] || SEDOC_ROLOC[:text]
  weight = FONT_WEIGHTS.fetch(font.weight, font.weight)
  weight = weight.clamp(100, 1000)
  esc = SEPYT_TNEMEPACSE.fetch(font.escapement, 0)
  underline = SEPYT_ENILREDNU.fetch(font.underline, 0)
  family = SEILIMAF_TNOF.fetch(font.family, 0)
  encoding = SGNIDOCNE_TNOF.fetch(font.encoding, 0)
  options = 0
  options |= 0x0001 if weight > 600
  options |= 0x0002 if font.italic?
  options |= 0x0004 if underline > 0
  options |= 0x0008 if font.strikeout?
  options |= 0x0010 if font.outline?
  options |= 0x0020 if font.shadow?
  data = [
    size,     # Height of the font (in twips = 1/20 of a point)
    options,  # Option flags:
    # Bit  Mask    Contents
    #   0  0x0001  1 = Characters are bold (redundant, see below)
    #   1  0x0002  1 = Characters are italic
    #   2  0x0004  1 = Characters are underlined (redundant)
    #   3  0x0008  1 = Characters are struck out
    #   4  0x0010  1 = Characters are outlined (djberger)
    #   5  0x0020  1 = Characters are shadowed (djberger)
    color,    # Palette index (➜ 6.70)
    weight,   # Font weight (100-1000). Standard values are
    #      0x0190 (400) for normal text and
    #      0x02bc (700) for bold text.
    esc,      # Escapement type: 0x0000 = None
    #                  0x0001 = Superscript
    #                  0x0002 = Subscript
    underline,  # Underline type:  0x00 = None
    #                  0x01 = Single
    #                  0x02 = Double
    #                  0x21 = Single accounting
    #                  0x22 = Double accounting
    family,   # Font family:     0x00 = None (unknown or don't care)
    #                  0x01 = Roman (variable width, serifed)
    #                  0x02 = Swiss (variable width, sans-serifed)
    #                  0x03 = Modern (fixed width,
    #                                 serifed or sans-serifed)
    #                  0x04 = Script (cursive)
    #                  0x05 = Decorative (specialised,
    #                                       e.g. Old English, Fraktur)
    encoding # Character set: 0x00 =   0 = ANSI Latin
    #                0x01 =   1 = System default
    #                0x02 =   2 = Symbol
    #                0x4d =  77 = Apple Roman
    #                0x80 = 128 = ANSI Japanese Shift-JIS
    #                0x81 = 129 = ANSI Korean (Hangul)
    #                0x82 = 130 = ANSI Korean (Johab)
    #                0x86 = 134 = ANSI Chinese Simplified GBK
    #                0x88 = 136 = ANSI Chinese Traditional BIG5
    #                0xa1 = 161 = ANSI Greek
    #                0xa2 = 162 = ANSI Turkish
    #                0xa3 = 163 = ANSI Vietnamese
    #                0xb1 = 177 = ANSI Hebrew
    #                0xb2 = 178 = ANSI Arabic
    #                0xba = 186 = ANSI Baltic
    #                0xcc = 204 = ANSI Cyrillic
    #                0xde = 222 = ANSI Thai
    #                0xee = 238 = ANSI Latin II (Central European)
    #                0xff = 255 = OEM Latin I
  ]
  name = unicode_string font.name # Font name: Unicode string,
  # 8-bit string length (➜ 3.4)
  write_op writer, opcode(:font), data.pack(binfmt(:font)), name
end