From d946ef39797d038ada0a4e9befc8cdebc40ae652 Mon Sep 17 00:00:00 2001
From: Shreeraj Jadhav <shreerajjadhav@gmail.com>
Date: Fri, 19 Jan 2024 12:40:27 -0500
Subject: [PATCH] fix mouse bind events when change in viewport out-of-focus

---
 src/core/internal/ParentedView.tsx | 56 +++++++++++++++++++++++++++++-
 1 file changed, 55 insertions(+), 1 deletion(-)

diff --git a/src/core/internal/ParentedView.tsx b/src/core/internal/ParentedView.tsx
index b016419..95e877d 100644
--- a/src/core/internal/ParentedView.tsx
+++ b/src/core/internal/ParentedView.tsx
@@ -87,7 +87,43 @@ const ParentedView = forwardRef(function ParentedView(
    * 1. Switch to targeted renderer.
    * 2. Switch to this View's interactor style.
    */
-  useEventListener(containerRef, 'pointerenter', (ev: PointerEvent) => {
+  const switchTarget = (): boolean => {
+    const rendererAPI = rendererRef.current;
+    if (!rendererAPI) return false;
+
+    const interactor = getInteractor();
+
+    (interactor as FixedVTKRenderWindowInteractor).setCurrentRenderer(
+      rendererAPI.get()
+    );
+    interactor.setInteractorStyle(getInteractorStyle());
+
+    const oldContainer = interactor.getContainer();
+    const newContainer = containerRef.current;
+    if (oldContainer !== newContainer) {
+      if (oldContainer) {
+        interactor.unbindEvents();
+      }
+      if (newContainer) {
+        console.log('sdj: parentView: bindEvents');
+        interactor.bindEvents(newContainer);
+      }
+      /*
+      // clearTimeout(interactor.get('wheelTimeoutID'));
+      interactor.set(
+        {
+          wheelTimeoutID: 0,
+        },
+        true
+      );
+      */
+      return true;
+    }
+    return false;
+  };
+
+  /*
+  useEventListener(containerRef, 'wheel', (ev: WheelEvent) => {
     const rendererAPI = rendererRef.current;
     if (!rendererAPI) return;
 
@@ -105,10 +141,28 @@ const ParentedView = forwardRef(function ParentedView(
         interactor.unbindEvents();
       }
       if (newContainer) {
+        console.log('sdj: parentView: bindEvents');
         interactor.bindEvents(newContainer);
       }
 
       // forward event to interactor
+      interactor.handleWheel(ev);
+    }
+  });
+  */
+
+  useEventListener(containerRef, 'wheel', (ev: WheelEvent) => {
+    if (switchTarget()) {
+      // forward event to interactor
+      const interactor = getInteractor();
+      interactor.handleWheel(ev);
+    }
+  });
+
+  useEventListener(containerRef, 'pointerenter', (ev: PointerEvent) => {
+    if (switchTarget()) {
+      // forward event to interactor
+      const interactor = getInteractor();
       interactor.handlePointerEnter(ev);
     }
   });