1 files changed, 68 insertions, 4 deletions

diff --git a/tests/auto/widgets/util/qscroller/tst_qscroller.cpp b/tests/auto/widgets/util/qscroller/tst_qscroller.cpp
index 491d5d48e3..a328b0c8d7 100644
--- a/tests/auto/widgets/util/qscroller/tst_qscroller.cpp
+++ b/tests/auto/widgets/util/qscroller/tst_qscroller.cpp
@@ -1,5 +1,5 @@
 // Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
 #include <QtGui>
 #include <QtWidgets>
@@ -8,6 +8,8 @@
 #include <QtGui/private/qeventpoint_p.h>
 #include <qpa/qwindowsysteminterface.h>
 
+#include <QtWidgets/private/qapplication_p.h>
+
 // #include <QDebug>
 
 class tst_QScrollerWidget : public QWidget
@@ -103,6 +105,7 @@ private slots:
     void scroll();
     void overshoot();
     void multipleWindows();
+    void mouseEventTimestamp();
 
 private:
     QPointingDevice *m_touchScreen = QTest::createTouchDevice();
@@ -321,7 +324,7 @@ void tst_QScroller::scrollTo()
 {
     QScopedPointer<tst_QScrollerWidget> sw(new tst_QScrollerWidget);
     sw->show();
-    QApplication::setActiveWindow(sw.data());
+    QApplicationPrivate::setActiveWindow(sw.data());
     if (!QTest::qWaitForWindowExposed(sw.data()) || !QTest::qWaitForWindowActive(sw.data()))
         QSKIP("Failed to show and activate window");
 
@@ -353,7 +356,7 @@ void tst_QScroller::scroll()
     QScroller::grabGesture(sw.data(), QScroller::TouchGesture);
     sw->setGeometry(100, 100, 400, 300);
     sw->show();
-    QApplication::setActiveWindow(sw.data());
+    QApplicationPrivate::setActiveWindow(sw.data());
     if (!QTest::qWaitForWindowExposed(sw.data()) || !QTest::qWaitForWindowActive(sw.data()))
         QSKIP("Failed to show and activate window");
 
@@ -394,7 +397,7 @@ void tst_QScroller::overshoot()
     QScroller::grabGesture(sw.data(), QScroller::TouchGesture);
     sw->setGeometry(100, 100, 400, 300);
     sw->show();
-    QApplication::setActiveWindow(sw.data());
+    QApplicationPrivate::setActiveWindow(sw.data());
     if (!QTest::qWaitForWindowExposed(sw.data()) || !QTest::qWaitForWindowActive(sw.data()))
         QSKIP("Failed to show and activate window");
 
@@ -516,6 +519,67 @@ void tst_QScroller::multipleWindows()
 #endif
 }
 
+/*!
+    This test verifies that mouse events arrive at the target widget
+    with valid timestamp, even if there is a gesture filtering (and then
+    replaying a copy of) the event. QTBUG-102010
+
+    We cannot truly simulate the double click here, as simulated events don't
+    go through the exact same event machinery as real events, so double clicks
+    don't get generated by Qt here. But we can verify that the timestamps of
+    the eventually delivered events are maintained.
+*/
+void tst_QScroller::mouseEventTimestamp()
+{
+#if QT_CONFIG(gestures) && QT_CONFIG(scroller)
+    QScopedPointer<tst_QScrollerWidget> sw(new tst_QScrollerWidget());
+    sw->scrollArea = QRectF(0, 0, 1000, 1000);
+    QScroller::grabGesture(sw.data(), QScroller::LeftMouseButtonGesture);
+    sw->setGeometry(100, 100, 400, 300);
+    sw->show();
+    QApplicationPrivate::setActiveWindow(sw.data());
+    if (!QTest::qWaitForWindowExposed(sw.data()) || !QTest::qWaitForWindowActive(sw.data()))
+        QSKIP("Failed to show and activate window");
+
+    QScroller *s1 = QScroller::scroller(sw.data());
+
+    struct EventFilter : QObject
+    {
+        QList<int> timestamps;
+    protected:
+        bool eventFilter(QObject *o, QEvent *e) override
+        {
+            if (e->isInputEvent())
+                timestamps << static_cast<QInputEvent *>(e)->timestamp();
+            return QObject::eventFilter(o, e);
+        }
+
+    } eventFilter;
+    sw->installEventFilter(&eventFilter);
+
+    const int interval = QGuiApplication::styleHints()->mouseDoubleClickInterval() / 10;
+    const QPoint point = sw->geometry().center();
+    // Simulate double by pressing twice within the double click interval.
+    // Presses are filtered and then delayed by the scroller/gesture machinery,
+    // so we first record all events, and then make sure that the relative timestamps
+    // are maintained also for the replayed or synthesized events.
+    QTest::mousePress(sw->windowHandle(), Qt::LeftButton, {}, point);
+    QCOMPARE(s1->state(), QScroller::Pressed);
+    QTest::mouseRelease(sw->windowHandle(), Qt::LeftButton, {}, point, interval);
+    QCOMPARE(s1->state(), QScroller::Inactive);
+    QTest::mousePress(sw->windowHandle(), Qt::LeftButton, {}, point, interval);
+    QCOMPARE(s1->state(), QScroller::Pressed);
+    // also filtered and delayed by the scroller
+    QTest::mouseRelease(sw->windowHandle(), Qt::LeftButton, {}, point, interval);
+    QCOMPARE(s1->state(), QScroller::Inactive);
+    int lastTimestamp = -1;
+    for (int timestamp : std::as_const(eventFilter.timestamps)) {
+        QCOMPARE_GE(timestamp, lastTimestamp);
+        lastTimestamp = timestamp + interval;
+    }
+#endif
+}
+
 QTEST_MAIN(tst_QScroller)
 
 #include "tst_qscroller.moc"