1 files changed, 72 insertions, 0 deletions
diff --git a/src/testlib/qtestwheel.h b/src/testlib/qtestwheel.h
new file mode 100644
index 0000000000..564a586b4b
--- /dev/null
+++ b/src/testlib/qtestwheel.h
@@ -0,0 +1,72 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QTESTWHEEL_H
+#define QTESTWHEEL_H
+
+#if 0
+// inform syncqt
+#pragma qt_no_master_include
+#endif
+
+#include <QtTest/qttestglobal.h>
+#include <QtTest/qtestassert.h>
+#include <QtTest/qtestsystem.h>
+#include <QtTest/qtestspontaneevent.h>
+#include <QtCore/qpoint.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qpointer.h>
+#include <QtGui/qevent.h>
+#include <QtGui/qwindow.h>
+
+#include <QtCore/QDebug>
+
+QT_BEGIN_NAMESPACE
+
+Q_GUI_EXPORT void qt_handleWheelEvent(QWindow *window, const QPointF &local,
+                                      const QPointF &global, QPoint pixelDelta,
+                                      QPoint angleDelta, Qt::KeyboardModifiers mods, Qt::ScrollPhase phase);
+
+namespace QTest
+{
+    /*! \internal
+        This function creates a mouse wheel event and calls
+        QWindowSystemInterface::handleWheelEvent().
+        \a window is the window that should be receiving the event and \a pos
+        provides the location of the event in the window's local coordinates.
+        \a angleDelta contains the wheel rotation angle, while \a pixelDelta
+        contains the scrolling distance in pixels on screen.
+        The keyboard states at the time of the event are specified by \a stateKey.
+        The scrolling phase of the event is specified by \a phase.
+    */
+    [[maybe_unused]] static void wheelEvent(QWindow *window, QPointF pos,
+                                            QPoint angleDelta, QPoint pixelDelta = QPoint(0, 0),
+                                            Qt::KeyboardModifiers stateKey = Qt::NoModifier,
+                                            Qt::ScrollPhase phase = Qt::NoScrollPhase)
+    {
+        QTEST_ASSERT(window);
+
+        // pos is in window local coordinates
+        const QSize windowSize = window->geometry().size();
+        if (windowSize.width() <= pos.x() || windowSize.height() <= pos.y()) {
+            qWarning("Mouse event at %d, %d occurs outside target window (%dx%d).",
+                        static_cast<int>(pos.x()), static_cast<int>(pos.y()), windowSize.width(), windowSize.height());
+        }
+
+        if (pos.isNull())
+            pos = QPoint(window->width() / 2, window->height() / 2);
+
+        QPointF global = window->mapToGlobal(pos);
+        QPointer<QWindow> w(window);
+
+        if (angleDelta.isNull() && pixelDelta.isNull())
+            qWarning("No angle or pixel delta specified.");
+
+        qt_handleWheelEvent(w, pos, global, pixelDelta, angleDelta, stateKey, phase);
+        qApp->processEvents();
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QTESTWHEEL_H