Repo created

iphone/Maps/Classes/Components/Modal/CoverVerticalPresentationAnimator.swift

@@ -0,0 +1,21 @@
+final class CoverVerticalPresentationAnimator: NSObject, UIViewControllerAnimatedTransitioning {
+  func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
+    return kDefaultAnimationDuration
+  }
+
+  func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+    guard let toVC = transitionContext.viewController(forKey: .to) else { return }
+
+    let containerView = transitionContext.containerView
+    let finalFrame = transitionContext.finalFrame(for: toVC)
+    let originFrame = finalFrame.offsetBy(dx: 0, dy: finalFrame.height)
+
+    containerView.addSubview(toVC.view)
+    toVC.view.frame = originFrame
+    toVC.view.autoresizingMask = [.flexibleWidth, .flexibleTopMargin]
+    UIView.animate(withDuration: transitionDuration(using: transitionContext),
+                   animations: {
+                    toVC.view.frame = finalFrame
+    }) { transitionContext.completeTransition($0) }
+  }
+}