From dccfb4e831393f3369088d6224bd69abe67ffab2 Mon Sep 17 00:00:00 2001
From: Jed Fox <git@jedfox.com>
Date: Thu, 15 Dec 2022 07:42:10 -0500
Subject: [PATCH] Avoid division by 0

---
 .../MastodonUI/Extension/UIScreen.swift        | 18 ++++++++++++++++++
 .../View/Content/StatusCardControl.swift       |  6 +++---
 2 files changed, 21 insertions(+), 3 deletions(-)
 create mode 100644 MastodonSDK/Sources/MastodonUI/Extension/UIScreen.swift

diff --git a/MastodonSDK/Sources/MastodonUI/Extension/UIScreen.swift b/MastodonSDK/Sources/MastodonUI/Extension/UIScreen.swift
new file mode 100644
index 000000000..831f2cb32
--- /dev/null
+++ b/MastodonSDK/Sources/MastodonUI/Extension/UIScreen.swift
@@ -0,0 +1,18 @@
+//
+//  UIScreen.swift
+//  
+//
+//  Created by Jed Fox on 2022-12-15.
+//
+
+import UIKit
+
+extension UIScreen {
+    public var pixelSize: CGFloat {
+        if scale > 0 {
+            return 1 / scale
+        }
+        // should never happen but just in case
+        return 1
+    }
+}
diff --git a/MastodonSDK/Sources/MastodonUI/View/Content/StatusCardControl.swift b/MastodonSDK/Sources/MastodonUI/View/Content/StatusCardControl.swift
index 0a175b23b..bd2485cf4 100644
--- a/MastodonSDK/Sources/MastodonUI/View/Content/StatusCardControl.swift
+++ b/MastodonSDK/Sources/MastodonUI/View/Content/StatusCardControl.swift
@@ -184,8 +184,8 @@ public final class StatusCardControl: UIControl {
         super.didMoveToWindow()
 
         if let window = window {
-            layer.borderWidth = 1 / window.screen.scale
-            dividerConstraint?.constant = 1 / window.screen.scale
+            layer.borderWidth = window.screen.pixelSize
+            dividerConstraint?.constant = 1 / window.screen.pixelSize
         }
     }
 
@@ -196,7 +196,7 @@ public final class StatusCardControl: UIControl {
         NSLayoutConstraint.deactivate(layoutConstraints)
         dividerConstraint?.deactivate()
 
-        let pixelSize = 1 / (window?.screen.scale ?? 1)
+        let pixelSize = 1 / (window?.screen.pixelSize ?? 1)
         switch layout {
         case .large(let aspectRatio):
             containerStackView.alignment = .fill