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https://github.com/xamarin/SignaturePad

Last synced: about 2 months ago
JSON representation

Host: GitHub
URL: https://github.com/xamarin/SignaturePad
Owner: xamarin
License: mit
Archived: true
Created: 2014-04-14T19:02:39.000Z (over 10 years ago)
Default Branch: master
Last Pushed: 2021-05-12T19:32:41.000Z (over 3 years ago)
Last Synced: 2024-06-19T03:03:18.201Z (3 months ago)
Language: C#
Size: 2.96 MB
Stars: 246
Watchers: 85
Forks: 150
Open Issues: 58
Metadata Files:
- Readme: README.md
- License: LICENSE

Awesome Lists containing this project

awesome-xamarin-forms - Signature Pad ★221
awesome-xamarin - SignaturePad ★117 - Signature Pad makes capturing, saving, exporting, and displaying signatures extremely simple on Xamarin.iOS, Xamarin.Android and Windows. (UI)

README

        # Signature Pad

[![Build Status](https://jenkins.mono-project.com/buildStatus/icon?job=Components-SignaturePad-Windows)](https://jenkins.mono-project.com/view/Components/job/Components-SignaturePad-Windows/)  [![Build Status](https://jenkins.mono-project.com/buildStatus/icon?job=Components-SignaturePad)](https://jenkins.mono-project.com/view/Components/job/Components-SignaturePad/)

[![SignaturePad NuGet](https://img.shields.io/nuget/vpre/Xamarin.Controls.SignaturePad.svg?label=SignaturePad%20NuGet)](https://www.nuget.org/packages/Xamarin.Controls.SignaturePad)  [![SignaturePad Xamairn.Forms NuGet](https://img.shields.io/nuget/vpre/Xamarin.Controls.SignaturePad.Forms.svg?label=SignaturePad.Forms%20NuGet)](https://www.nuget.org/packages/Xamarin.Controls.SignaturePad.Forms)

Signature Pad makes capturing, saving, exporting, and displaying signatures extremely simple on

Xamarin.iOS, Xamarin.Android and Windows.

Not only is Signature Pad available for native apps, but also available in Xamarin.Forms apps.

![Screenshot](images/signature-ios.jpg)

---

## Using Signature Pad

Signature Pad can be installed from [NuGet.org][nuget-link] for native Xamarin and Windows apps:

```

nuget install Xamarin.Controls.SignaturePad

```

And also for Xamarin.Forms apps:

```

nuget install Xamarin.Controls.SignaturePad.Forms

```

### Using Signature Pad on iOS

```csharp

using Xamarin.Controls;

var signatureView = new SignaturePadView (View.Frame) {

	StrokeWidth = 3f,

	StrokeColor = UIColor.Black,

	BackgroundColor = UIColor.White,

};

```

### Using Signature Pad on Android

```csharp

using Xamarin.Controls;

var signatureView = new SignaturePadView (this) {

	StrokeWidth = 3f,

	StrokeColor = Color.White,

	BackgroundColor = Color.Black

};

```

### Using Signature Pad on Windows

```xml

```

### Using Signature Pad on Xamarin.Forms

```xml

```

### Obtaining a Signature Image

The signature that was drawn on the canvas can be obtained as a image using the `GetImage(...)`

method overloads. The resulting image will be in the native platform image type:

```csharp

// iOS

UIImage image = signatureView.GetImage ();

// Android

Bitmap image = signatureView.GetImage ();

// Windows

WriteableBitmap bitmap = signatureView.GetImage ();

```

For Xamarin.Forms, there is no "native" image format, but `GetImageStreamAsync` can be used instead

to retrieve an encoded (jpeg or png) image stream:

```csharp

Stream bitmap = await signatureView.GetImageStreamAsync (SignatureImageFormat.Png);

```

### Obtaining the Signature Points

In addition to retrieving the signature as an image, the signature can also be retrieved as

as an array of points:

```csharp

var strokes = signatureView.Strokes;

```

These strokes can be used to save and restore a signature:

```csharp

// restore strokes (iOS, Android, Windows)

signatureView.LoadStrokes (newStrokes);

// restore strokes (Xamarin.Forms)

signatureView.Strokes = newStrokes;

```

---

## License

The license for this repository is specified in [LICENSE](LICENSE).

## .NET Foundation

This project is part of the [.NET Foundation](http://www.dotnetfoundation.org/projects).

[nuget-link]: https://www.nuget.org/packages/Xamarin.Controls.SignaturePad