From cb7022150d746ceb227e1a5fcb1ace7c96fca618 Mon Sep 17 00:00:00 2001
From: David Edmundson <kde@davidedmundson.co.uk>
Date: Thu, 14 Nov 2019 14:19:40 +0000
Subject: [PATCH] [effects] Fix build on old Qt

---
 .../standalone/effects_mouse_interception_x11_filter.cpp  | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/plugins/platforms/x11/standalone/effects_mouse_interception_x11_filter.cpp b/plugins/platforms/x11/standalone/effects_mouse_interception_x11_filter.cpp
index ffa38530fa..1cd7a9c0ff 100644
--- a/plugins/platforms/x11/standalone/effects_mouse_interception_x11_filter.cpp
+++ b/plugins/platforms/x11/standalone/effects_mouse_interception_x11_filter.cpp
@@ -64,7 +64,13 @@ bool EffectsMouseInterceptionX11Filter::event(xcb_generic_event_t *event)
                 const Qt::KeyboardModifiers modifiers = x11ToQtKeyboardModifiers(me->state);
 
                 if (modifiers & Qt::AltModifier) {
-                    angleDelta = angleDelta.transposed();
+                    int x = angleDelta.x();
+                    int y = angleDelta.y();
+
+                    angleDelta.setX(y);
+                    angleDelta.setY(x);
+                    // After Qt > 5.14 simplify to
+                    // angleDelta = angleDelta.transposed();
                 }
 
                 if (angleDelta.y()) {