From 9d73db39197f58cd4a035196410b81a27b577e4d Mon Sep 17 00:00:00 2001
From: Santos <santos.gagbegnon@shopify.com>
Date: Fri, 4 Oct 2019 14:45:16 -0400
Subject: [PATCH] PanModal Portrait to Landscape Issue (#53)

* Fix issue where transitioning from portrait to landscape would cause a PanModal's view to disappear if its height was short

* improve transitioning to landscape fix
---
 PanModal/Controller/PanModalPresentationController.swift | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/PanModal/Controller/PanModalPresentationController.swift b/PanModal/Controller/PanModalPresentationController.swift
index e497a28..5d18d88 100644
--- a/PanModal/Controller/PanModalPresentationController.swift
+++ b/PanModal/Controller/PanModalPresentationController.swift
@@ -226,7 +226,6 @@ public class PanModalPresentationController: UIPresentationController {
                 else { return }
 
             self.adjustPresentedViewFrame()
-
             if presentable.shouldRoundTopCorners {
                 self.addRoundedCorners(to: self.presentedView)
             }
@@ -367,7 +366,13 @@ private extension PanModalPresentationController {
             else { return }
 
         let adjustedSize = CGSize(width: frame.size.width, height: frame.size.height - anchoredYPosition)
+        let panFrame = panContainerView.frame
         panContainerView.frame.size = frame.size
+        
+        if ![shortFormYPosition, longFormYPosition].contains(panFrame.origin.y) {
+            adjust(toYPosition: panFrame.origin.y - panFrame.height + frame.height)
+        }
+        panContainerView.frame.origin.x = frame.origin.x
         presentedViewController.view.frame = CGRect(origin: .zero, size: adjustedSize)
     }