TestCase mouse event debugger

tst_default.cpp

#include <QtQuickTest/quicktest.h>
#include <QGuiApplication>
#include <QQmlContext>
#include <QQmlEngine>

class MouseDebuggerSetup : public QObject
{
    Q_OBJECT

public:
    MouseDebuggerSetup() {
    }

public slots:
    // Qt Quick Test doesn't use QQmlApplicationEngine, otherwise we could cast
    // the engine here and connect to its objectCreated signal.
    void qmlEngineAvailable(QQmlEngine *engine) {
        mEngine = engine;
        mTimerId = startTimer(0);

        engine->rootContext()->setContextProperty("mouseDebugger", this);
    }

protected:
    void timerEvent(QTimerEvent */*event*/) override {
        auto topLevelWindows = qApp->topLevelWindows();
        if (topLevelWindows.isEmpty())
            return;

        killTimer(mTimerId);
        topLevelWindows.first()->installEventFilter(this);
    }

    bool eventFilter(QObject */*object*/, QEvent *event) override {
        if (event->type() == QEvent::MouseButtonPress) {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
            qDebug() << "Mouse press at" << mouseEvent->pos();
            markerRequested(mouseEvent->pos(), QLatin1String("press"));
        } else if (event->type() == QEvent::MouseMove) {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
            qDebug() << "Mouse move at" << mouseEvent->pos();
            markerRequested(mouseEvent->pos(), QLatin1String("move"));
        } else if (event->type() == QEvent::MouseButtonRelease) {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
            qDebug() << "Mouse release at" << mouseEvent->pos();
            markerRequested(mouseEvent->pos(), QLatin1String("release"));
        }
        return false;
    }

signals:
    void markerRequested(const QPoint &pos, const QString &eventType);

private:

    int mTimerId = 0;
    QQmlEngine *mEngine = nullptr;
};

int main(int argc, char *argv[])
{
    QTEST_SET_MAIN_SOURCE_PATH
    qputenv("QML_NO_TOUCH_COMPRESSION", "1");
    MouseDebuggerSetup setup;
    return quick_test_main_with_setup(argc, argv, "tst_controls::Default", TST_CONTROLS_DATA, &setup);
}

#include "tst_default.moc"

tst_swipedelegate.qml

Component {
    id: markerComponent

    Rectangle {
        x: eventPosition.x - width / 2
        y: eventPosition.y - height / 2
        width: eventType !== "move" ? 20 : 10
        height: width
        radius: width / 2
        opacity: 0.5
        color: eventType === "press" ? "mediumseagreen" : eventType === "move" ? "steelblue" : "tomato"

        property string eventType
        property point eventPosition
    }
}

Connections {
    // Give it an id so that it can be enabled/disabled by a test
    id: mouseDebuggerConnections
    target: mouseDebugger
    onMarkerRequested: {
        testCase.createTemporaryObject(markerComponent, container,
            {
                eventPosition: pos, z: 1000, eventType: eventType
            })
    }
}