From e9b82dca8b76e447575afe5048c7a4ea945d3768 Mon Sep 17 00:00:00 2001
From: Matthew Einhorn <moiein2000@gmail.com>
Date: Mon, 2 Oct 2017 13:15:52 -0400
Subject: [PATCH] Don't pass touch to children when outside the sv.

---
 kivy/uix/scrollview.py | 31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/kivy/uix/scrollview.py b/kivy/uix/scrollview.py
index f1bdc15be..704f09a7c 100644
--- a/kivy/uix/scrollview.py
+++ b/kivy/uix/scrollview.py
@@ -722,17 +722,22 @@ class ScrollView(StencilView):
 
     def on_touch_move(self, touch):
         if self._touch is not touch:
-            # touch is in parent
-            touch.push()
-            touch.apply_transform_2d(self.to_local)
-            super(ScrollView, self).on_touch_move(touch)
-            touch.pop()
+            # don't pass on touch to children if outside the sv
+            if self.collide_point(*touch.pos):
+                # touch is in parent
+                touch.push()
+                touch.apply_transform_2d(self.to_local)
+                super(ScrollView, self).on_touch_move(touch)
+                touch.pop()
             return self._get_uid() in touch.ud
         if touch.grab_current is not self:
             return True
 
         if touch.ud.get(self._get_uid()) is None:
-            return super(ScrollView, self).on_touch_move(touch)
+            # don't pass on touch to children if outside the sv
+            if self.collide_point(*touch.pos):
+                return super(ScrollView, self).on_touch_move(touch)
+            return False
 
         touch.ud['sv.handled'] = {'x': False, 'y': False}
         if self.dispatch('on_scroll_move', touch):
@@ -818,13 +823,15 @@ class ScrollView(StencilView):
     def on_touch_up(self, touch):
         uid = self._get_uid('svavoid')
         if self._touch is not touch and uid not in touch.ud:
-            # touch is in parents
-            touch.push()
-            touch.apply_transform_2d(self.to_local)
-            if super(ScrollView, self).on_touch_up(touch):
+            # don't pass on touch to children if outside the sv
+            if self.collide_point(*touch.pos):
+                # touch is in parents
+                touch.push()
+                touch.apply_transform_2d(self.to_local)
+                if super(ScrollView, self).on_touch_up(touch):
+                    touch.pop()
+                    return True
                 touch.pop()
-                return True
-            touch.pop()
             return False
 
         if self.dispatch('on_scroll_stop', touch):