Get scale factor for view from trait collection instead of screen

square · Apr 16, 2024 · 1f443b9 · 1f443b9
1 parent ce04c4d
commit 1f443b9
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/Paralayout/PixelRounding.swift b/Paralayout/PixelRounding.swift
@@ -34,7 +34,17 @@ extension UIScreen: ScaleFactorProviding {
 extension UIView: ScaleFactorProviding {
 
  public var pixelsPerPoint: CGFloat {
+ let scaleFromTraits = traitCollection.displayScale
+
+ // The trait collection is the authority for display scale, but sometimes the trait collection does not have a
+ // value for the scale, in which case it will return 0, breaking all the things.
+ if scaleFromTraits > 0 {
+ return scaleFromTraits
+ }
+
+ #if os(iOS)
  return (window?.screen ?? UIScreen.main).pixelsPerPoint
+ #endif
  }
 
 }