fix(macos): ManipulationDelta translateY being inverted

unoplatform · Dec 9, 2020 · 03d13f5 · 03d13f5
1 parent 9cf1c86
commit 03d13f5
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/Uno.UWP/UI/Input/GestureRecognizer.Manipulation.cs b/src/Uno.UWP/UI/Input/GestureRecognizer.Manipulation.cs
@@ -269,6 +269,10 @@ private ManipulationDelta GetCumulative()
 			{
 				var translateX = _isTranslateXEnabled ? _currents.Center.X - _origins.Center.X : 0;
 				var translateY = _isTranslateYEnabled ? _currents.Center.Y - _origins.Center.Y : 0;
+#if __MACOS__
+				// correction for translateY being inverted (#4700)
+				translateY *= -1;
+#endif
 
 				double rotate;
 				float scale, expansion;