From fa51e022916ba33efa9646ab9642e3278e2ee7b9 Mon Sep 17 00:00:00 2001
From: Tomas Zigo <tomas.zigo@slovanet.sk>
Date: Sat, 15 Jun 2024 11:34:22 +0200
Subject: [PATCH] wxGUI/mapswipe: fix map image flickering if position is
 changed by sash

---
 gui/wxpython/mapswipe/frame.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gui/wxpython/mapswipe/frame.py b/gui/wxpython/mapswipe/frame.py
index 908da5fc6a1..62b8ae65562 100644
--- a/gui/wxpython/mapswipe/frame.py
+++ b/gui/wxpython/mapswipe/frame.py
@@ -925,6 +925,14 @@ def SashChanged(self):
 
     def OnSashChanging(self, event):
         Debug.msg(5, "MapSplitter.OnSashChanging()")
+        if event:
+            # Prevent map image flickering if it is used sash not slider
+            # for changing position
+            wx.CallAfter(self._onSashChanging, event)
+        else:
+            self._onSashChanging(event)
+
+    def _onSashChanging(self, event):
         if not self._moveSash:
             event.SetSashPosition(-1)
             return