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//! Defines the [PdfFormSignatureField] struct, exposing functionality related to a single
//! form field of type `PdfFormFieldType::Signature`.
use crate::bindgen::{FPDF_ANNOTATION, FPDF_FORMHANDLE};
use crate::bindings::PdfiumLibraryBindings;
use crate::form_field_private::internal::PdfFormFieldPrivate;
/// A single `PdfFormField` of type `PdfFormFieldType::Signature`. The form field object defines
/// an interactive data entry widget that allows the user to draw a signature.
///
/// Form fields in Pdfium are wrapped inside page annotations of type `PdfPageAnnotationType::Widget`
/// or `PdfPageAnnotationType::XfaWidget`. User-specified values can be retrieved directly from
/// each form field object by unwrapping the form field from the annotation, or in bulk from the
/// `PdfForm::field_values()` function.
pub struct PdfFormSignatureField<'a> {
form_handle: FPDF_FORMHANDLE,
annotation_handle: FPDF_ANNOTATION,
bindings: &'a dyn PdfiumLibraryBindings,
}
impl<'a> PdfFormSignatureField<'a> {
pub(crate) fn from_pdfium(
form_handle: FPDF_FORMHANDLE,
annotation_handle: FPDF_ANNOTATION,
bindings: &'a dyn PdfiumLibraryBindings,
) -> Self {
PdfFormSignatureField {
form_handle,
annotation_handle,
bindings,
}
}
/// Returns the [PdfiumLibraryBindings] used by this [PdfFormSignatureField] object.
#[inline]
pub fn bindings(&self) -> &'a dyn PdfiumLibraryBindings {
self.bindings
}
}
impl<'a> PdfFormFieldPrivate<'a> for PdfFormSignatureField<'a> {
#[inline]
fn form_handle(&self) -> &FPDF_FORMHANDLE {
&self.form_handle
}
#[inline]
fn annotation_handle(&self) -> &FPDF_ANNOTATION {
&self.annotation_handle
}
#[inline]
fn bindings(&self) -> &dyn PdfiumLibraryBindings {
self.bindings
}
}