A comprehensive catalog of customizable web components designed for building and managing e-signature applications. Built with modern web technologies using LitElement and TypeScript.

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Install

npm install @signature.digital/catalog
# or
pnpm install @signature.digital/catalog

🎯 Overview

This package provides three main components for e-signature workflows:

Component	Tag	Description
SignPad	`<sdig-signpad>`	Canvas-based signature capture pad
SignBox	`<sdig-signbox>`	Complete signing interface with controls
ContractEditor	`<sdig-contracteditor>`	Contract document management component

📦 Usage

Basic Import

import '@signature.digital/catalog';

This registers all custom elements and makes them available for use in your HTML.

SignPad Component

The <sdig-signpad> is a canvas-based signature capture component that allows users to draw their signatures directly in the browser.

<sdig-signpad></sdig-signpad>

API Methods:

const signpad = document.querySelector('sdig-signpad');

// Get signature data as point arrays
const data = await signpad.toData();

// Load signature from data
await signpad.fromData(data);

// Export signature as SVG string
const svg = await signpad.toSVG();

// Undo last stroke
await signpad.undo();

// Clear the signature pad
await signpad.clear();

SignBox Component

The <sdig-signbox> wraps SignPad with a complete UI including Clear, Undo, and Submit buttons.

<sdig-signbox></sdig-signbox>

Events:

const signbox = document.querySelector('sdig-signbox');

signbox.addEventListener('signature', (event) => {
  const signatureData = event.detail.signature;
  console.log('Signature captured:', signatureData);
});

ContractEditor Component

The <sdig-contracteditor> provides contract viewing and editing capabilities using the IPortableContract interface from @signature.digital/tools.

import '@signature.digital/catalog';
import { IPortableContract } from '@signature.digital/tools/interfaces';
import { demoContract } from '@signature.digital/tools/demodata';

const editor = document.querySelector('sdig-contracteditor');
editor.contract = demoContract;

🔧 Integration Example

Here's a complete example showing all components working together:

import '@signature.digital/catalog';
import { LitElement, html, css } from 'lit';
import { customElement } from 'lit/decorators.js';

@customElement('my-signature-app')
class MySignatureApp extends LitElement {
  static styles = css`
    :host {
      display: block;
      max-width: 800px;
      margin: 0 auto;
    }
  `;

  render() {
    return html`
      <h2>Please sign below</h2>
      <sdig-signbox @signature=${this.handleSignature}></sdig-signbox>
    `;
  }

  private handleSignature(e: CustomEvent) {
    console.log('Signature submitted:', e.detail.signature);
    // Process or store the signature
  }
}

🎨 Theming

Components support automatic light/dark theme detection and can be customized using CSS custom properties:

sdig-signpad, sdig-signbox {
  --main-background-color: #ffffff;
  --line-color: #000000;
  --button-color: #007bff;
}

The components use cssManager.bdTheme() for automatic theme switching based on system preferences.

📋 Requirements

Modern browser with Custom Elements V1 support
ECMAScript Modules (ESM) compatible environment
TypeScript 5.0+ (for development)

🔗 Dependencies

@design.estate/dees-element - LitElement-based component framework
@signature.digital/tools - Contract interfaces and demo data
signature_pad - Canvas signature capture library

License and Legal Information

This repository contains open-source code licensed under the MIT License. A copy of the license can be found in the LICENSE file.

Please note: The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.

Trademarks

This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH or third parties, and are not included within the scope of the MIT license granted herein.

Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines or the guidelines of the respective third-party owners, and any usage must be approved in writing. Third-party trademarks used herein are the property of their respective owners and used only in a descriptive manner, e.g. for an implementation of an API or similar.

readme.md

@signature.digital/catalog