#ifndef EVENTOBSERVER_H
#define EVENTOBSERVER_H

#include <QQuickItem>

class EventObserver : public QQuickItem
{
	Q_OBJECT
public:
	EventObserver();

signals:


	// QQuickItem interface
protected:
	bool childMouseEventFilter(QQuickItem* item, QEvent* event);
};

#endif // EVENTOBSERVER_H

#include "eventobserver.h"

EventObserver::EventObserver()
{
	this->setFiltersChildMouseEvents(true);
}


bool EventObserver::childMouseEventFilter(QQuickItem* item, QEvent* event)
{
	qDebug() << this->objectName() << "received event of type:" << event->type();
	qDebug() << "event:" << event;
	event->accept();
	return true;
}

import QtQuick 2.15
import QtQuick.Window 2.15
import tech.example
import QtQuick.Controls

Window {
	width: 640
	height: 480
	visible: true
	title: qsTr("Hello World")

	EventObserver {
		objectName: "High Observer"
		anchors.fill: parent

		EventObserver {
			objectName: "Low Observer"
			anchors.fill: parent

			TextArea {
				anchors.fill: parent
			}
		}
	}
}

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include "eventobserver.h"

int main(int argc, char *argv[])
{
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
	QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
#endif
	QGuiApplication app(argc, argv);

	QQmlApplicationEngine engine;
	qmlRegisterType<EventObserver>("tech.example", 1, 0, "EventObserver");
	const QUrl url(QStringLiteral("qrc:/main.qml"));
	QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
					 &app, [url](QObject *obj, const QUrl &objUrl) {
		if (!obj && url == objUrl)
			QCoreApplication::exit(-1);
	}, Qt::QueuedConnection);
	engine.load(url);

	return app.exec();
}