angelolloqui / agblurtransition Goto Github PK

import UIKit

@objc(InsetBlurModalSeque) class InsetBlurModalSeque: UIStoryboardSegue {

override func perform() {
    let sourceViewController = self.sourceViewController as UIViewController
    let destinationViewController = self.destinationViewController as UIViewController

    // Make sure the background is ransparent
    destinationViewController.view.backgroundColor = UIColor.clearColor()

    // Take screenshot from source VC
    UIGraphicsBeginImageContext(sourceViewController.view.bounds.size)
    sourceViewController.view.drawViewHierarchyInRect(sourceViewController.view.frame, afterScreenUpdates:true)
    var image:UIImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    // Blur screenshot
    var blurredImage:UIImage = image.applyBlurWithRadius(5, tintColor: UIColor(white: 1.0, alpha: 0.0), saturationDeltaFactor: 1.3, maskImage: nil)

    // Crop screenshot, add to view and send to back
    let blurredBackgroundImageView : UIImageView = UIImageView(image:blurredImage)
    blurredBackgroundImageView.clipsToBounds = true;
    blurredBackgroundImageView.contentMode = UIViewContentMode.Center
    let insets:UIEdgeInsets = UIEdgeInsetsMake(20, 20, 20, 20);
    blurredBackgroundImageView.frame = UIEdgeInsetsInsetRect(blurredBackgroundImageView.frame, insets)

    destinationViewController.view.addSubview(blurredBackgroundImageView)
    destinationViewController.view.sendSubviewToBack(blurredBackgroundImageView)

    // Add original screenshot behind blurred image
    let backgroundImageView : UIImageView = UIImageView(image:image)
    destinationViewController.view.addSubview(backgroundImageView)
    destinationViewController.view.sendSubviewToBack(backgroundImageView)

    // Add the destination view as a subview, temporarily – we need this do to the animation
    sourceViewController.view.addSubview(destinationViewController.view)

    // Set initial state of animation
    destinationViewController.view.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.1, 0.1);
    blurredBackgroundImageView.alpha = 0.0;
    backgroundImageView.alpha = 0.0;

    // Animate
    UIView.animateWithDuration(0.5,
        delay: 0.0,
        usingSpringWithDamping: 0.6,
        initialSpringVelocity: 0.0,
        options: UIViewAnimationOptions.CurveLinear,
        animations: {
            destinationViewController.view.transform = CGAffineTransformIdentity
            blurredBackgroundImageView.alpha = 1.0
            backgroundImageView.alpha = 1.0;

        },
        completion: { (fininshed: Bool) -> () in
            // Remove from temp super view
            destinationViewController.view.removeFromSuperview()

            sourceViewController.presentViewController(destinationViewController, animated: false, completion: nil)
        }
    )

}

}

[parent addSubview:self.backgroundView];