Function embedWidgetsToDoc

apps/OpenSign/src/constant/Utils.js:2046–2597

(
  widgets,
  pdfDoc,
  signyourself,
  scale,
  prefillImg
)

//function for embed all type widgets in document using pdf-lib
export const embedWidgetsToDoc = async (
  widgets,
  pdfDoc,
  signyourself,
  scale,
  prefillImg
) => {
  // `fontBytes` is used to embed custom font in pdf
  const fontBytes = await fileasbytes(
    "https://cdn.opensignlabs.com/webfonts/times.ttf"
  );
  pdfDoc.registerFontkit(fontkit);
  const font = await pdfDoc.embedFont(fontBytes, { subset: true });
  let hasError = false;
  for (let item of widgets) {
    if (hasError) break; // Stop the outer loop if an error occurred
    const typeExist = item.pos.some((data) => data?.type);
    let updateItem;
    if (typeExist) {
      if (signyourself) {
        updateItem = item.pos;
      } else {
        // Checking required and optional widget types
        // For both required and optional widgets, handle signurl, defaultValue, and response as the widget's data
        // If the widget type is checkbox or radio (whether required or optional), we don't need to validate its value.
        // Instead, add an empty checkbox/radio, or if a value exists, mark the checkbox/radio as checked.
        updateItem = item.pos.filter(
          (data) =>
            data?.options?.SignUrl ||
            !isEmptyValue(data?.options?.defaultValue) ||
            !isEmptyValue(data?.options?.response) ||
            data?.type === "checkbox" ||
            data?.type === radioButtonWidget
        );
      }
    } else {
      updateItem = item.pos;
    }
    const ImgTypeWidget = [
      "signature",
      "stamp",
      "initials",
      "image",
      drawWidget
    ];
    const pageNo = item.pageNumber;
    const widgetsPositionArr = updateItem;
    const pages = pdfDoc.getPages();
    const form = pdfDoc.getForm();
    const page = pages[pageNo - 1];
    // `page.getCropBox()` returns the visible area of the PDF page.
    // It provides an object with the following properties:
    // - x: the x-coordinate of the lower-left corner of the visible area
    // - y: the y-coordinate of the lower-left corner of the visible area
    // - width: the width of the visible area (x1 - x0)
    // - height: the height of the visible area (y1 - y0)
    // If the page does not explicitly define a CropBox, this method returns
    // the MediaBox instead, which represents the full physical size of the page.