IGRPhotoTweaks

Drag, Rotate, Scale and Crop

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IGRPhotoTweaks

IGRPhotoTweaks

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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Usage

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
}


Example

IGRPhotoTweaks.xcodeproj -> IGRPhotoTweaks target /Example


Installation

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.


Issues

Not works in Objective-C


Protip

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.

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