From 836c0b5a24f5ceb8ed7dce0129f433bf23f58c25 Mon Sep 17 00:00:00 2001
From: Shawn Rutledge <shawn.rutledge@qt.io>
Date: Tue, 30 Jun 2020 12:06:37 +0200
Subject: Make QDebug operator<< polymorphic for QPointingDevice

At least it will look polymorphic by doing dispatch internally.
Adding pointingDeviceType avoids the need for qobject_cast,
and will probably also be useful in other contexts.

Change-Id: I3b6d13765bdf3add9a8208de6f0e98018e40cc42
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
---
 src/gui/kernel/qinputdevice.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/gui/kernel/qinputdevice.cpp')

diff --git a/src/gui/kernel/qinputdevice.cpp b/src/gui/kernel/qinputdevice.cpp
index e70b0d61be..d64f2c4ddc 100644
--- a/src/gui/kernel/qinputdevice.cpp
+++ b/src/gui/kernel/qinputdevice.cpp
@@ -39,6 +39,7 @@
 
 #include "qinputdevice.h"
 #include "qinputdevice_p.h"
+#include "qpointingdevice.h"
 #include <QCoreApplication>
 #include <QDebug>
 #include <QLoggingCategory>
@@ -278,6 +279,9 @@ bool QInputDevice::operator==(const QInputDevice &other) const
 #ifndef QT_NO_DEBUG_STREAM
 QDebug operator<<(QDebug debug, const QInputDevice *device)
 {
+    const QInputDevicePrivate *d = QInputDevicePrivate::get(device);
+    if (d->pointingDeviceType)
+        return operator<<(debug, static_cast<const QPointingDevice *>(device));
     QDebugStateSaver saver(debug);
     debug.nospace();
     debug.noquote();
-- 
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