GTOverlayView

GTOverlayView is a Swift library that allows to add a semi-transparent or colored overlay view to another view just in a few quick moves. It provides a simple and modern public API through which configuration can be done and the overlay to be shown and removed.

Suitable for UIKit based projects on iOS.

To integrate GTOverlayView into your projects follow the next steps:

1. Copy the repository's URL to GitHub.
2. Open your project in Xcode.
3. Go to menu File > Swift Packages > Add Package Dependency....
4. Paste the URL, select the package when it appears and click Next.
5. In the Rules leave the default option selected (Up to Next Major) and click Next.
6. Select the GTOverlayView package and select the Target to add to; click Finish.
7. In Xcode, select your project in the Project navigator and go to General tab.
8. Add GTOverlayView framework under Frameworks, Libraries, and Embedded Content section.

Don't forget to import GTOverlayView module anywhere you are about to use it:

import GTOverlayView

// -- Class Methods

// Create a new `GTOverlayView` instance and add it as a subview to the given view.
addOverlay(to:)

// Remove the overlay view from the given view animated.
removeOverlayView(from:duration:)



// -- Instance Methods

// Update the overlay view color.
updateOverlayColor(with:)

// Update the default animation duration when tapping to dismiss the overlay view.
updateRemoveAnimationDuration(with:)

// Set a delay between the time the overlay view is tapped to be removed
// and the time it gets removed.
setDelayWhenRemovingOnTap(_:)

// Show the overlay view animated.
showAnimated(duration:completion:)

// Disable the capability to dismiss the overlay view when tapping on it.
disableRemoveOnTap()

// Provide a closure with custom actions that should be called right when
// the overlay view has disappeared from its super view.
onRemove(handler:)

// Provide a closure with custom actions that should be called when
// the overlay view is tapped.
onTap(handler:)

The simplest way to present the overlay view to another view is the following:

GTOverlayView.addOverlay(to: self.view).showAnimated()

The overlay view will be presented animated using a default duration. showAnimated() can accept a duration and a completion handler argument optionally:

GTOverlayView.addOverlay(to: self.view)
    .showAnimated(duration: 0.75) {
        // Do something when the overlay has been presented...
}

You can modify various parameters of the overlay view. For example, the following updates the overlay color and changes the default animation duration when tapping on the overlay to dismiss it:

GTOverlayView.addOverlay(to: self.view)
    GTOverlayView.addOverlay(to: self.view)
    .updateOverlayColor(with: UIColor(red: 0, green: 0.25, blue: 0.75, alpha: 0.75))
    .updateRemoveAnimationDuration(with: 0.1)
    .showAnimated()

GTOverlayView allows to perform custom actions when the overlay view is tapped. Just provide a closure to the onTap(handler:) method as shown next:

GTOverlayView.addOverlay(to: self.view)
    .onTap {
        print("Overlay view was tapped!")
        // Do something when the overlay view is tapped...
    }
    .showAnimated()

Besides the onTap(handler:) method, it's possible to be notified when the overlay view has been disappeared and therefore perform any necessary additional actions upon removal by passing another closure to the onRemove(handler:) method:

GTOverlayView.addOverlay(to: self.view)
    .onRemove {
        print("Overlay view has been removed!")
        // Do something when the overlay view has been removed...
    }
    .showAnimated()

It's possible to disable overlay removal when tapping on it with the disableRemoveOnTap() method:

GTOverlayView.addOverlay(to: self.view)
    .disableRemoveOnTap()
    .showAnimated()

To manually remove the overlay view call the removeOverlayView(from:duration:) class method:

GTOverlayView.removeOverlayView(from: self.view)

// or, overriding the default duration:
GTOverlayView.removeOverlayView(from: self.view, duration: 0.4)

• See Xcode's Quick Help for further details on each available method.

• Default overlay color is a semi-transparent gray (UIColor(white: 0.5, alpha: 0.5)). Use the updateOverlayColor(with:) method to change it.

• All methods above return a GTOverlayView instance except for the removeOverlayView(from:duration:) class method which is a void method.

• Assigning the initialized GTOverlayView instance to a variable or property is optional, as all methods that return it have been marked with the discardableResult attribute.

• It's recommended to call the showAnimated(duration:completion:) method as the last one.

Current version is 1.0.0.

GTOverlayView is licensed under the MIT license.