Added QDebug support for QWindowSystemInterface::TouchPoint

Change-Id: Icfc606a49a7fd24fcd35b9c818642a03e044ed6c
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>

src/gui/kernel/qwindowsysteminterface.cpp

@@ -647,6 +647,13 @@ void QWindowSystemInterface::handleContextMenuEvent(QWindow *w, bool mouseTrigge
 }
 #endif
 
+#ifndef QT_NO_DEBUG_STREAM
+Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QWindowSystemInterface::TouchPoint &p) {
+    dbg.nospace() << "TouchPoint(" << p.id << " @" << p.normalPosition << " press " << p.pressure << " vel " << p.velocity << " state " << (int)p.state;
+    return dbg.space();
+}
+#endif
+
 Q_GUI_EXPORT void qt_handleMouseEvent(QWindow *w, const QPointF & local, const QPointF & global, Qt::MouseButtons b, Qt::KeyboardModifiers mods = Qt::NoModifier) {
     QWindowSystemInterface::handleMouseEvent(w, local, global,  b,  mods);
 }

src/gui/kernel/qwindowsysteminterface.h

@@ -190,6 +190,10 @@ private:
     static bool sendWindowSystemEventsImplementation(QEventLoop::ProcessEventsFlags flags);
 };
 
+#ifndef QT_NO_DEBUG_STREAM
+Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QWindowSystemInterface::TouchPoint &p);
+#endif
+
 QT_END_NAMESPACE
 
 #endif // QWINDOWSYSTEMINTERFACE_H