From a4bb3896bfeb716efebd768404915f0414c65068 Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Sat, 12 Feb 2022 13:18:39 +0200
Subject: [PATCH] Schedule workspace repaint when window leaves current desktop

When a window leaves the current virtual desktop, we need to schedule a
workspace repaint so the compositor repaints the old region of the
window on the current desktop.

In hindsight, the scene graph must schedule a repaint, but it's not
doable with the current effects api, it will be changed with future
refactoring changes.

BUG: 444172
---
 src/abstract_client.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/abstract_client.cpp b/src/abstract_client.cpp
index 46087282fa..f12b497b8e 100644
--- a/src/abstract_client.cpp
+++ b/src/abstract_client.cpp
@@ -496,8 +496,10 @@ void AbstractClient::setDesktops(QVector<VirtualDesktop*> desktops)
     updateWindowRules(Rules::Desktops);
 
     Q_EMIT desktopChanged();
-    if (wasOnCurrentDesktop != isOnCurrentDesktop())
+    if (wasOnCurrentDesktop != isOnCurrentDesktop()) {
+        addWorkspaceRepaint(visibleGeometry());
         Q_EMIT desktopPresenceChanged(this, was_desk);
+    }
     Q_EMIT x11DesktopIdsChanged();
 }