U can use Mantis
IGRPhotoTweaks is a swift 4.2 library allow to expand an interface to crop photos, based on PhotoTweaks. It can let user drag, rotate, scale the image, and crop it. You will find it mimics the interaction of Photos.app on iOS 9. :]
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IGRPhotoTweaksViewController is a base interface for YourPhotoTweaksViewController. IGRPhotoTweaksViewController offers all the operations to crop the photo, which includes translation, rotate and scale.
To use it,
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showCrop" {
let yourCropViewController = segue.destination as! YourPhotoTweaksViewController
yourCropViewController.image = sender as! UIImage
yourCropViewController.delegate = self;
}
}self.cropAction() is the func calls the edit done action.
self.dismissAction() is the func calls the cancel edit action.
self.changedAngel(value: radians) is the func to set rotation angle.
self.setCropAspectRect(aspect: "9:16") is the func to set aspect ratio for crop view.
self.resetAspectRect() is the func resets all previous aspect ratio.
self.resetView() is the func resets all previous actions.
Get the cropped image
extension ViewController: IGRPhotoTweakViewControllerDelegate {
func photoTweaksController(_ controller: IGRPhotoTweakViewController, didFinishWithCroppedImage croppedImage: UIImage) {
self.imageView?.image = croppedImage
_ = controller.navigationController?.popViewController(animated: true)
}
func photoTweaksControllerDidCancel(_ controller: IGRPhotoTweakViewController) {
_ = controller.navigationController?.popViewController(animated: true)
}
}Setup IGRPhotoTweaks Controller
override func viewDidLoad() {
super.viewDidLoad()
self.isAutoSaveToLibray = true
}Setup/Control Angle
fileprivate func setupSlider() {
self.angleSlider?.minimumValue = -Float(IGRRadianAngle.toRadians(45))
self.angleSlider?.maximumValue = Float(IGRRadianAngle.toRadians(45))
self.angleSlider?.value = 0.0
}
@IBAction func onChandeAngleSliderValue(_ sender: UISlider) {
let radians: CGFloat = CGFloat(sender.value)
self.changeAngle(radians: radians)
}
Customize View
override open func setupThemes() {
IGRCropLine.appearance().backgroundColor = UIColor.green
IGRCropGridLine.appearance().backgroundColor = UIColor.yellow
IGRCropCornerView.appearance().backgroundColor = UIColor.purple
IGRCropCornerLine.appearance().backgroundColor = UIColor.orange
IGRCropMaskView.appearance().backgroundColor = UIColor.blue
IGRPhotoContentView.appearance().backgroundColor = UIColor.gray
IGRPhotoTweakView.appearance().backgroundColor = UIColor.brown
}
override open func customBorderColor() -> UIColor {
return UIColor.red
}
override open func customBorderWidth() -> CGFloat {
return 2.0
}
override open func customCornerBorderWidth() -> CGFloat {
return 4.0
}
override open func customCropLinesCount() -> Int {
return 3
}
override open func customGridLinesCount() -> Int {
return 4
}
override open func customCornerBorderLength() -> CGFloat {
return 30.0
}
override open func customIsHighlightMask() -> Bool {
return true
}
override open func customHighlightMaskAlphaValue() -> CGFloat {
return 0.3
}IGRPhotoTweaks.xcodeproj -> IGRPhotoTweaks target /Example
IGRPhotoTweaks is available on CocoaPods. Add the follwing to your Podfile:
pod 'IGRPhotoTweaks', '~> 1.0.0'Alternatively, you can manually drag the IGRPhotoTweaks folder into your Xcode project.
Not works in Objective-C
If using with an existing UIImagePickerController, be sure to set allowsEditing = NO otherwise you may force the user to crop with the native editing tool before showing IGRPhotoTweaksViewController.