Flutter signature pad widget

Flutter widget to allow users to sign with finger and export the result as image.

Getting Started with Flutter

For help getting started with Flutter, view our online documentation.

For help on editing package code, view the documentation.

Getting Started with the widget

This is a very simple widget that allow drawing by finger on a widget and be able to get the image back.

For very basic usage, please check the example file here

API

The constructor of the widget allow you to change the color (default to black), the strokeWidth (default to 5.0) and a backgroundPainter if you want to add some kind of watermark

clear: allow you to clear the area to start again

getData: allow you to retrieve the image

Libraries

flutter_signature_pad

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]