This repo is view to zoomable by pinch gesture.
For installing with SPM, add it to your Package.swift.
dependencies: [
.package(url: "https://github.com/shima11/InteractiveZoomDriver.git", from: "1.2.5"))
]For installing with Carthage, add it to your Cartfile.
github "shima11/InteractiveZoomDriver"
For installing with CocoaPods, add it to your Podfile.
pod 'InteractiveZoomDriver'
import InteractiveZoomDriver
let zoomView = UIImageView() // UIView or SubClass of UIView
zoomView.isUserInteractionEnabled = true
Add zoom function to target UIView.
gestureTargetView: added tap and pan gesture.
sourceView: source view.
targetViewFactory: Transformed View during zooming.
shouldZoomTransform: Delegate to the outside whether zooming is possible.
let driver = InteractiveZoomDriver(
gestureTargetView: imageView2,
sourceView: imageView2,
targetViewFactory: { (fromImageView: UIImageView) -> UIView in
let view = UIImageView()
view.image = fromImageView.image
view.clipsToBounds = fromImageView.clipsToBounds
view.contentMode = fromImageView.contentMode
return view
},
shouldZoomTransform: {(sourceView: UIImageView) -> Bool in
if sourceView.image == nil {
return false
}
return true
}
)
This is also no problem.
InteractiveZoomView.clone and InteractiveZoomView.shouldZoomTransform is default implementation of protocol extension.
InteractiveZoomView corresponds to UIImageView only.
To support other than UIImageView, add an implementation in extension.
let driver = InteractiveZoomDriver(
gestureTargetView: zoomView,
sourceView: zoomView,
targetViewFactory: InteractiveZoomView.clone,
shouldZoomTransform: InteractiveZoomView.shouldZoomTransform
)
InteractiveZoomView is able to only UIImageView now.
If you want to use custom UIView, you need to create extension of InteractiveZoomView with reference to InteractiveZoomView.
let overlayZoomView = InteractiveZoomView(
sourceView: zoomView
)
view.addSubView(overlayZoomView)