From 04747c016c935262d447f91b57dc49778d912b37 Mon Sep 17 00:00:00 2001
From: Ragnar Rebase <rrebase@gmail.com>
Date: Tue, 26 Mar 2024 21:14:17 +0200
Subject: [PATCH] Use `locationOfTouch:inView` over `locationInView` for focal
 (#2833)

Replace `locationInView` with `locationOfTouch:inView:` in Pinch handler
to fix truncated focalX and focalY in gesture handler context.

Tested on repro example in (#2833).
---
 apple/Handlers/RNPinchHandler.m | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/apple/Handlers/RNPinchHandler.m b/apple/Handlers/RNPinchHandler.m
index d4351bea08..c0adeae61a 100644
--- a/apple/Handlers/RNPinchHandler.m
+++ b/apple/Handlers/RNPinchHandler.m
@@ -163,8 +163,15 @@ - (RNGestureHandlerEventExtraData *)eventExtraData:(NSMagnificationGestureRecogn
 #else
 - (RNGestureHandlerEventExtraData *)eventExtraData:(UIPinchGestureRecognizer *)recognizer
 {
+  CGPoint accumulatedPoint = CGPointZero;
+  for (int i = 0; i < recognizer.numberOfTouches; i++) {
+    CGPoint location = [recognizer locationOfTouch:i inView:recognizer.view];
+    accumulatedPoint.x += location.x;
+    accumulatedPoint.y += location.y;
+  }
+  CGPoint focalPoint = CGPointMake(accumulatedPoint.x / recognizer.numberOfTouches, accumulatedPoint.y / recognizer.numberOfTouches);
   return [RNGestureHandlerEventExtraData forPinch:recognizer.scale
-                                   withFocalPoint:[recognizer locationInView:recognizer.view]
+                                   withFocalPoint:focalPoint
                                      withVelocity:recognizer.velocity
                               withNumberOfTouches:recognizer.numberOfTouches
                                   withPointerType:_pointerType];