PdfElixide.Form.Field.Button (pdf_elixide v0.13.0)

A button field (/FT /Btn) — push buttons, check boxes and radio groups.

:kind says which of the three it is, read from the /Ff bits :flags decodes.

:value is true/false for the conventional /Yes, /On and /No, /Off states, a custom on-state name (e.g. /Export1) as its bare string, or nil when the field carries no /V. See PdfElixide.Form.Field.value/0 for what a malformed one can put here. A :push button holds no value at all.

PdfElixide.Form.put_value/3 can write only /Yes and /Off, so writing a button's value back is not always faithful — see the "Check boxes and radio groups" section of the Forms guide before round-tripping one.

Summary

Types

kind()

Which kind of button the field is.

t()

Types

kind()

@type kind() :: :check_box | :radio | :push

Which kind of button the field is.

:check_box — a single box, toggled on and off. The default: this is what a button declaring neither of the two bits below is.
:radio — a group of buttons of which at most one is selected.
:push — a button that holds no value and acts only through its actions.

t()

@type t() :: %PdfElixide.Form.Field.Button{
  flags: PdfElixide.Form.Field.Button.Flags.t(),
  kind: kind(),
  name: String.t(),
  value: PdfElixide.Form.Field.value()
}