A Flutter plugin providing performance optimized signature canvas with ability to set custom style, boundaries and initial state. This is native flutter implementation, so it supports all platforms.
In time of creation of this plugin, there was no available solution that had:
To use this plugin, add
signature as a dependency in your
// IMPORT PACKAGE import 'package:signature/signature.dart'; // INITIALIZE. RESULT IS A WIDGET, SO IT CAN BE DIRECTLY USED IN BUILD METHOD var _signatureCanvas = Signature( width: 300, height: 300, backgroundColor: Colors.lightBlueAccent, ); // CLEAR CANVAS _signatureCanvas.clear(); // EXPORT BYTES (EXPORTING FORMAT IS PNG) _signatureCanvas.exportBytes(); // isEmpty/isNotEmpty CAN BE USED TO CHECK IF SIGNATURE HAS BEEN PROVIDED _signatureCanvas.isNotEmpty; //true if signature has been provided _signatureCanvas.isEmpty; //true if signature has NOT been provided // EXPORT POINTS (2D POINTS ROUGHLY REPRESENTING WHAT IS VISIBLE ON CANVAS) var exportedPoints = _signatureCanvas.exportPoints(); //EXPORTED POINTS CAN BE USED TO INITIALIZE PREVIOUS STATE VIA CONSTRUCTOR var _signatureCanvas = Signature( points: exportedPoints, width: 300, height: 300, backgroundColor: Colors.lightBlueAccent, );
androidxpackages that allows this library to be used with flutter projects that use
androidx. If you need to stay on
android.supportfor whatever reason, don't upgrade as it may break your build. See more.
Demonstrates how to use the signature plugin.
For help getting started with Flutter, view our online documentation.
Add this to your package's pubspec.yaml file:
dependencies: signature: ^2.0.0
You can install packages from the command line:
$ flutter pub get
Alternatively, your editor might support
flutter pub get.
Check the docs for your editor to learn more.
Now in your Dart code, you can use:
|2.0.0||Feb 20, 2019|
|1.1.0||Feb 20, 2019|
|1.0.3||Oct 23, 2018|
|1.0.2||Oct 23, 2018|
|1.0.1||Oct 23, 2018|
|1.0.0||Oct 23, 2018|
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We analyzed this package on Jun 25, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:
Detected platforms: Flutter
References Flutter, and has no conflicting libraries.
flutter format to format
Support latest dependencies. (-5 points)
The version constraint in
pubspec.yaml does not support the latest published versions for 1 dependency.