pdf-e-signature/dist/hooks/useSignature.js

A React component that allows users to select positions for e-signatures on PDFs

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useSignature = void 0;
var _react = require("react");
const useSignature = () => {
  const [isModalOpen, setIsModalOpen] = (0, _react.useState)(false);
  const [selectedPosition, setSelectedPosition] = (0, _react.useState)(null);
  const [signaturePositions, setSignaturePositions] = (0, _react.useState)([]);
  const signatureRef = (0, _react.useRef)(null);
  const clearSignature = () => {
    signatureRef.current.clear();
  };
  const saveSignature = async (signaturePositions, onUpdate) => {
    if (!selectedPosition) return;
    const signatureImage = signatureRef.current.toDataURL('image/png', {
      backgroundColor: 'transparent'
    });
    const timestamp = new Date().toLocaleString();
    const updatedPositions = signaturePositions.map(pos => pos === selectedPosition ? {
      ...pos,
      signature: signatureImage,
      timestamp: timestamp
    } : pos);
    onUpdate(updatedPositions);
    setIsModalOpen(false);
    setSelectedPosition(null);
  };
  const handleSignatureUpload = async (e, signaturePositions, onUpdate) => {
    const file = e.target.files[0];
    if (!file || !selectedPosition) return;
    const reader = new FileReader();
    reader.onload = async () => {
      const timestamp = new Date().toLocaleString();
      const updatedPositions = signaturePositions.map(pos => pos === selectedPosition ? {
        ...pos,
        signature: reader.result,
        timestamp: timestamp
      } : pos);
      onUpdate(updatedPositions);
      setIsModalOpen(false);
      setSelectedPosition(null);
    };
    reader.readAsDataURL(file);
  };
  return {
    isModalOpen,
    setIsModalOpen,
    selectedPosition,
    setSelectedPosition,
    signatureRef,
    clearSignature,
    saveSignature,
    handleSignatureUpload,
    setSignaturePositions,
    signaturePositions
  };
};
exports.useSignature = useSignature;