class HexaPDF::Type::AcroForm::SignatureField

Parent	HexaPDF::Type::AcroForm::Field

AcroForm signature fields represent a digital signature.

It serves two purposes: To visually display the signature and to hold the information of the digital signature itself.

If the signature should not be visible, the associated widget annotation should have zero width and height; and/or the ‘hidden’ or ‘no_view’ flags of the annotation should be set.

See: PDF2.0 s12.7.5.5

Field Definitions

Name	Type/Allowed Values	Required	Default Value
FT	Symbol One of: :Btn, :Tx, :Ch, :Sig	false	nil
Parent	HexaPDF::Type::AcroForm::Field or Hash	false	nil
Kids	HexaPDF::PDFArray or Array	false	nil
T	String	false	nil
TU	String	false	nil
TM	String	false	nil
Ff	Integer	false	0
V	HexaPDF::Dictionary or Symbol or String or HexaPDF::Stream or HexaPDF::PDFArray or Hash or Array	false	nil
DV	HexaPDF::Dictionary or Symbol or String or HexaPDF::Stream or HexaPDF::PDFArray or Hash or Array	false	nil
AA	HexaPDF::Dictionary or Hash	false	nil
Lock	HexaPDF::Type::AcroForm::SignatureField::LockDictionary or Hash	false	nil
SV	HexaPDF::Type::AcroForm::SignatureField::SeedValueDictionary or Hash	false	nil

Public Instance Methods

field_value()¶

Returns the associated signature dictionary or nil if the signature is not filled in.

field_value=(sig_dict)¶

Sets the signature dictionary as value of this signature field.