From bd24c88f8cf3a21bd6336ee7307b17eff0757e2c Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 2 Feb 2023 21:31:07 +0530
Subject: [PATCH] ...

---
 src/pyj/read_book/touch.pyj | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/pyj/read_book/touch.pyj b/src/pyj/read_book/touch.pyj
index 4265d0a846..11b01e8888 100644
--- a/src/pyj/read_book/touch.pyj
+++ b/src/pyj/read_book/touch.pyj
@@ -180,7 +180,9 @@ class TouchHandler:
             self.start_hold_timer()
 
     def handle_touchstart(self, ev):
-        ev.preventDefault(), ev.stopPropagation()
+        if ev.cancelable:
+            ev.preventDefault()
+        ev.stopPropagation()
         self.prune_expired_touches()
         for touch in ev.changedTouches:
             self.ongoing_touches[touch_id(touch)] = copy_touch(touch)
@@ -193,7 +195,9 @@ class TouchHandler:
             self.start_hold_timer()
 
     def handle_touchmove(self, ev):
-        ev.preventDefault(), ev.stopPropagation()
+        if ev.cancelable:
+            ev.preventDefault()
+        ev.stopPropagation()
         for touch in ev.changedTouches:
             t = self.ongoing_touches[touch_id(touch)]
             if t:
@@ -201,7 +205,9 @@ class TouchHandler:
                 self.dispatch_gesture()
 
     def handle_touchend(self, ev):
-        ev.preventDefault(), ev.stopPropagation()
+        if ev.cancelable:
+            ev.preventDefault()
+        ev.stopPropagation()
         for touch in ev.changedTouches:
             t = self.ongoing_touches[touch_id(touch)]
             if t:
@@ -214,7 +220,8 @@ class TouchHandler:
 
     def handle_touchcancel(self, ev):
         if ev.cancelable:
-            ev.preventDefault(), ev.stopPropagation()
+            ev.preventDefault()
+        ev.stopPropagation()
         for touch in ev.changedTouches:
             tid = touch_id(touch)  # noqa: unused-local
             v'delete self.ongoing_touches[tid]'