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https://github.com/andreamazz/BubbleTransition

A custom modal transition that presents and dismiss a controller with an expanding bubble effect.
https://github.com/andreamazz/BubbleTransition

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A custom modal transition that presents and dismiss a controller with an expanding bubble effect.

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README 

        


  




[![CocoaPods](https://cocoapod-badges.herokuapp.com/v/BubbleTransition/badge.svg)](http://cocoapods.org/?q=bubbletransition)

[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)

![Swift 5.0](https://img.shields.io/badge/swift-5.0-orange.svg)

[![codebeat badge](https://codebeat.co/badges/45635139-6294-4ac8-9f39-6f1d3b18dd23)](https://codebeat.co/projects/github-com-andreamazz-bubbletransition)



A custom modal transition that presents and dismiss a controller inside an expanding and shrinking _bubble_.





  

    

  




# Screenshot

![BubbleTransition](https://raw.githubusercontent.com/andreamazz/BubbleTransition/master/assets/screenshot.gif)



# Usage

Install through [CocoaPods](http://cocoapods.org):

```

pod 'BubbleTransition', '~> 3.2.0'



use_frameworks!

```

Install through [Carthage](https://github.com/Carthage/Carthage):

```

github "andreamazz/BubbleTransition"

```



Install through [Swift Package Manager](https://swift.org/package-manager/):



To integrate using Xcode:  



`File` -> `Swift Packages` -> `Add Package Dependency...`  



Enter package URL: `https://github.com/andreamazz/BubbleTransition`, and select the latest release. 



# Setup

Have your view controller conform to `UIViewControllerTransitioningDelegate`. Set the `transitionMode`, the `startingPoint`, the `bubbleColor` and the `duration`.

```swift

let transition = BubbleTransition()



public override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

  let controller = segue.destination

  controller.transitioningDelegate = self

  controller.modalPresentationCapturesStatusBarAppearance = true

  controller.modalPresentationStyle = .custom

}



// MARK: UIViewControllerTransitioningDelegate



public func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {

  transition.transitionMode = .present

  transition.startingPoint = someButton.center

  transition.bubbleColor = someButton.backgroundColor!

  return transition

}



public func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {

  transition.transitionMode = .dismiss

  transition.startingPoint = someButton.center

  transition.bubbleColor = someButton.backgroundColor!

  return transition

}

```



You can find the Objective-C equivalent [here](https://gist.github.com/andreamazz/9b0d6c7db065555ec0d7).



# Swipe to dismiss



You can use an interactive gesture to dismiss the presented controller. To enable this gesture, prepare the interactive transition:



```swift

let interactiveTransition = BubbleInteractiveTransition()



override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

  if let controller = segue.destination as? ModalViewController {

    controller.transitioningDelegate = self

    controller.modalPresentationStyle = .custom

    controller.modalPresentationCapturesStatusBarAppearance = true

    controller.interactiveTransition = interactiveTransition

    interactiveTransition.attach(to: controller)

  }

}

```



and implement `interactionControllerForDismissal` in your presenting controller:



```swift

func interactionControllerForDismissal(using animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {

  return interactiveTransition

}

```



In the presented controller make sure to call `finish()` on the interactive gesture if you need to quickly dismiss from a button press instead. Check the sample code for more info.  



You can decide the gesture threshold and the swipe direction:

```swift

interactiveTransition.interactionThreshold = 0.5

interactionThreshold.swipeDirection = .up

```



# Properties

```swift

var startingPoint = CGPointZero

```

The point that originates the bubble.



```swift

var duration = 0.5

```

The transition duration.



```swift

var transitionMode: BubbleTranisionMode = .present

```

The transition direction. Either `.present`, `.dismiss` or `.pop`.



```swift

var bubbleColor: UIColor = .white

```

The color of the bubble. Make sure that it matches the destination controller's background color.  



Checkout the sample project for the full implementation.



# Author

[Andrea Mazzini](https://twitter.com/theandreamazz). I'm available for freelance work, feel free to contact me.



Want to support the development of [these free libraries](https://cocoapods.org/owners/734)? Buy me a coffee ☕️ via [Paypal](https://www.paypal.me/andreamazzini).  



# Contributors

Thanks to [everyone](https://github.com/andreamazz/BubbleTransition/graphs/contributors) kind enough to submit a pull request.



# MIT License



	Copyright (c) 2018-2020 Andrea Mazzini. All rights reserved.



	Permission is hereby granted, free of charge, to any person obtaining a

	copy of this software and associated documentation files (the "Software"),

	to deal in the Software without restriction, including

	without limitation the rights to use, copy, modify, merge, publish,

	distribute, sublicense, and/or sell copies of the Software, and to

	permit persons to whom the Software is furnished to do so, subject to

	the following conditions:



	The above copyright notice and this permission notice shall be included

	in all copies or substantial portions of the Software.



	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

	IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

	CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

	TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

	SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.