Provides an iOS view controller allowing a user to draw their signature with their finger in a realistic style.

I see this has already been brought up in #3 but I'd like to raise it again. IMO a 3rd-party fork with a Podfile isn't a great solution as 1) it's already out of date with this repo and 2) it's not in the official package index. UberSignature is an awesome repo – let's make it easier for more people to install and use in their projects!

@myhrvold @viralplatipuss @jmascia is this something you'd be willing to support? I'd be happy to submit a PR with a Podspec if you guys are on board to publish it to https://cocoapods.org/. It would also be great to support installation via Carthage.

presetImage was not being set with optional image. Objc version has it

- (instancetype)initWithImage:(UIImage *)image
{
    if (self = [super initWithNibName:nil bundle:nil]) {
        _presetImage = image; // <- HERE!!!!
        _isEmpty = (!image);
        
        _model = [[UBSignatureDrawingModelAsync alloc] init];
    }
    
    return self;
}

For issue https://github.com/uber/UberSignature/issues/21 and swift sample app updates, also added signature drawing view, useful for table cells when can't use a vc

I’m working on an app using Uber Signature that has a white stroke color against a black background. While editing everything works fine, but when I export the image the white stroke is composited onto an opaque white background. Would be nice to support exporting images with transparent background images.

I’m working on trying to add this, will contribute it back if I can get it working.

_{Sent with GitHawk}

presetImage was not being set with optional image. Objc version has it

- (instancetype)initWithImage:(UIImage *)image
{
    if (self = [super initWithNibName:nil bundle:nil]) {
        _presetImage = image; // <- HERE!!!!
        _isEmpty = (!image);
        
        _model = [[UBSignatureDrawingModelAsync alloc] init];
    }
    
    return self;
}

While adding support for CocoaPods (https://github.com/uber/UberSignature/issues/8), the minimum iOS supported version was raised from 8.0 to 11.4.

I'm not sure if this was an intentional change, but I need to support iOS 10.0.

@alanzeino can we set a lower minimum iOS supported version?

Thanks

iOS 13.4 Crash on launching UBSignatureDrawingViewController, it was working fine till upgrading to the latest 13.4.x version. This is what I see in the stack trace,

Fatal Exception: NSInvalidArgumentException
index out of bounds for arranged subview: index = 7 expected to be less than or equal to 6
-[NSCache init]

UIKitCore -[UIStackView insertArrangedSubview:atIndex:]

For such a basic piece of code it would be helpful to provide a working example. Running both the project and workspace result in errors for missing files. For example: UBSignatureDrawingModelAsync file not found. Pods are a waste of time for such a small piece of code. Most developers never update them anyway.

https://github.com/uber/UberSignature/blob/master/Sources/Swift/SignatureDrawingViewController.swift#L40

public init(image: UIImage? = nil) {
        super.init(nibName: nil, bundle: nil)
    }

The passed image is not used or shown in view controller when using this initializer, I would expect that when I pass an image to this initializer it would show the image