From 8c5810f8c38ac97b0553d13d61ea81e5b0f826dc Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 3 Feb 2020 08:42:06 +0530
Subject: [PATCH] Viewer: Stop autoscroll when changing page layout mode. Fixes
 #1861621 [Sudden position change when
 reading](https://bugs.launchpad.net/calibre/+bug/1861621)

---
 src/pyj/read_book/iframe.pyj | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/pyj/read_book/iframe.pyj b/src/pyj/read_book/iframe.pyj
index 627b3344fa..1130130c88 100644
--- a/src/pyj/read_book/iframe.pyj
+++ b/src/pyj/read_book/iframe.pyj
@@ -198,6 +198,7 @@ class IframeBoss:
             self.jump_to_cfi = scroll_to_cfi
             self.anchor_funcs = flow_anchor_funcs
             self.auto_scroll_action = flow_auto_scroll_action
+            paged_auto_scroll_action('stop')
         else:
             self.do_layout = paged_layout
             self.handle_wheel = paged_onwheel
@@ -207,6 +208,7 @@ class IframeBoss:
             self._handle_gesture = paged_handle_gesture
             self.anchor_funcs = paged_anchor_funcs
             self.auto_scroll_action = paged_auto_scroll_action
+            flow_auto_scroll_action('stop')
         update_settings(data.settings)
         self.keyboard_shortcut_map = create_shortcut_map(data.settings.keyboard_shortcuts)
         set_current_spine_item({