From 00379da3d316a8e3dc4cfb9a1f2afe962d2a7485 Mon Sep 17 00:00:00 2001
From: Alexander Volkov <avolkov@astralinux.ru>
Date: Fri, 3 Jun 2022 14:00:54 +0300
Subject: [PATCH] Ignore fake input devices when detecting tablet mode

Otherwise launching firefox, which in turn leads to launching of
xdg-desktop-portal-kde, disables auto-rotation.
---
 src/backends/fakeinput/fakeinputdevice.h | 2 +-
 src/tabletmodemanager.cpp                | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/backends/fakeinput/fakeinputdevice.h b/src/backends/fakeinput/fakeinputdevice.h
index bc7f6886d3..9f7e063921 100644
--- a/src/backends/fakeinput/fakeinputdevice.h
+++ b/src/backends/fakeinput/fakeinputdevice.h
@@ -16,7 +16,7 @@ class FakeInputDevice;
 namespace KWin
 {
 
-class FakeInputDevice : public InputDevice
+class KWIN_EXPORT FakeInputDevice : public InputDevice
 {
     Q_OBJECT
 
diff --git a/src/tabletmodemanager.cpp b/src/tabletmodemanager.cpp
index 4326b1e540..09fb073855 100644
--- a/src/tabletmodemanager.cpp
+++ b/src/tabletmodemanager.cpp
@@ -8,6 +8,7 @@
 #include "tabletmodemanager.h"
 
 #include "backends/libinput/device.h"
+#include "backends/fakeinput/fakeinputdevice.h"
 #include "input.h"
 #include "input_event.h"
 #include "input_event_spy.h"
@@ -24,6 +25,10 @@ KWIN_SINGLETON_FACTORY_VARIABLE(TabletModeManager, s_manager)
 
 static bool shouldIgnoreDevice(InputDevice *device)
 {
+    if (qobject_cast<FakeInputDevice*>(device)) {
+        return true;
+    }
+
     auto libinput_device = qobject_cast<LibInput::Device *>(device);
     if (!libinput_device) {
         return false;