Add autotest for QGestureRecognizer.

Task-number: QTBUG-12736
Task-number: QTBUG-15768
Task-number: QTBUG-40461
Change-Id: Ib6dfaa9336f615e17d41444f7aa686cb93d04fca
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>

tests/auto/widgets/gestures/gestures.pro

@@ -0,0 +1,6 @@
+TEMPLATE=subdirs
+SUBDIRS=\
+   qgesturerecognizer \
+
+mac: SUBDIRS -= \ # Uses native recognizers
+   qgesturerecognizer \

tests/auto/widgets/gestures/qgesturerecognizer/qgesturerecognizer.pro

@@ -0,0 +1,4 @@
+CONFIG += testcase
+TARGET = tst_qgesturerecognizer
+QT +=  widgets testlib gui-private core-private
+SOURCES += tst_qgesturerecognizer.cpp

tests/auto/widgets/gestures/qgesturerecognizer/tst_qgesturerecognizer.cpp

@@ -0,0 +1,330 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtTest/QTest>
+#include <QtWidgets/QApplication>
+#include <QtWidgets/QWidget>
+#include <QtWidgets/QGestureEvent>
+#include <QtGui/QScreen>
+#include <QtGui/QTouchDevice>
+#include <QtCore/QVector>
+#include <QtCore/QString>
+#include <QtCore/QHash>
+#include <QtCore/QDebug>
+
+#include <qpa/qwindowsysteminterface.h>
+
+class tst_QGestureRecognizer : public QObject
+{
+    Q_OBJECT
+public:
+    tst_QGestureRecognizer();
+
+private Q_SLOTS:
+    void initTestCase();
+#ifndef QT_NO_GESTURES
+    void panGesture_data();
+    void panGesture();
+    void pinchGesture_data();
+    void pinchGesture();
+    void swipeGesture_data();
+    void swipeGesture();
+#endif // !QT_NO_GESTURES
+
+private:
+    const int m_fingerDistance;
+    QTouchDevice *m_touchDevice;
+};
+
+tst_QGestureRecognizer::tst_QGestureRecognizer()
+    : m_fingerDistance(qRound(QGuiApplication::primaryScreen()->physicalDotsPerInch() / 2.0))
+    , m_touchDevice(new QTouchDevice)
+{
+}
+
+void tst_QGestureRecognizer::initTestCase()
+{
+    m_touchDevice->setType(QTouchDevice::TouchScreen);
+    QWindowSystemInterface::registerTouchDevice(m_touchDevice);
+}
+
+#ifndef QT_NO_GESTURES
+
+typedef QVector<Qt::GestureType> GestureTypeVector;
+
+class TestWidget : public QWidget
+{
+public:
+    explicit TestWidget(const GestureTypeVector &gestureTypes);
+
+    bool gestureReceived(Qt::GestureType gestureType) const
+        { return m_receivedGestures.value(gestureType); }
+
+protected:
+    bool event(QEvent * event) Q_DECL_OVERRIDE;
+
+private:
+    typedef QHash<Qt::GestureType, bool> GestureTypeHash;
+    GestureTypeHash m_receivedGestures;
+};
+
+TestWidget::TestWidget(const GestureTypeVector &gestureTypes)
+{
+    setAttribute(Qt::WA_AcceptTouchEvents);
+
+    foreach (Qt::GestureType gestureType, gestureTypes) {
+        grabGesture(gestureType);
+        m_receivedGestures.insert(gestureType, false);
+    }
+
+    const QRect geometry = QGuiApplication::primaryScreen()->availableGeometry();
+    const QSize size = geometry.size() / 2;
+    resize(size);
+    move(geometry.center() - QPoint(size.width() / 2, size.height() / 2));
+}
+
+bool TestWidget::event(QEvent * event)
+{
+    switch (event->type()) {
+    case QEvent::Gesture: {
+        const QGestureEvent *gestureEvent = static_cast<QGestureEvent *>(event);
+        const GestureTypeHash::iterator hend = m_receivedGestures.end();
+        for (GestureTypeHash::iterator it = m_receivedGestures.begin(); it != hend; ++it) {
+            if (const QGesture *gesture = gestureEvent->gesture(it.key())) {
+                if (gesture->state() == Qt::GestureFinished)
+                    it.value() = true;
+            }
+        }
+    }
+        break;
+    default:
+        break;
+    }
+    return QWidget::event(event);
+}
+
+static void pressSequence(QTest::QTouchEventSequence &sequence,
+                          QVector<QPoint> &points,
+                          QWidget *widget)
+{
+    const int pointCount = points.size();
+    for (int p = 0; p < pointCount; ++p)
+        sequence.press(p, points.at(p), widget);
+    sequence.commit();
+}
+
+static void linearSequence(int n, const QPoint &delta,
+                           QTest::QTouchEventSequence &sequence,
+                           QVector<QPoint> &points,
+                           QWidget *widget)
+{
+    const int pointCount = points.size();
+    for (int s = 0; s < n; ++s) {
+        for (int p = 0; p < pointCount; ++p) {
+            points[p] += delta;
+            sequence.move(p, points[p], widget);
+        }
+        sequence.commit();
+    }
+}
+
+static void releaseSequence(QTest::QTouchEventSequence &sequence,
+                            QVector<QPoint> &points,
+                            QWidget *widget)
+{
+    const int pointCount = points.size();
+    for (int p = 0; p < pointCount; ++p)
+        sequence.release(p, points[p], widget);
+    sequence.commit();
+}
+
+// --- Pan
+
+enum PanSubTest {
+    TwoFingerPanSubTest
+};
+
+void tst_QGestureRecognizer::panGesture_data()
+{
+    QTest::addColumn<int>("panSubTest");
+    QTest::addColumn<bool>("gestureExpected");
+    QTest::newRow("Two finger") << int(TwoFingerPanSubTest) << true;
+}
+
+void tst_QGestureRecognizer::panGesture()
+{
+    QFETCH(int, panSubTest);
+    QFETCH(bool, gestureExpected);
+
+    Q_UNUSED(panSubTest) // Single finger pan will be added later.
+
+    const int panPoints = 2;
+    const Qt::GestureType gestureType = Qt::PanGesture;
+    TestWidget widget(GestureTypeVector(1, gestureType));
+    widget.setWindowTitle(QTest::currentTestFunction());
+    widget.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&widget));
+
+    QVector<QPoint> points;
+    for (int i = 0; i < panPoints; ++i)
+        points.append(QPoint(10 + i *20, 10 + i *20));
+
+    QTest::QTouchEventSequence panSequence = QTest::touchEvent(&widget, m_touchDevice);
+    pressSequence(panSequence, points, &widget);
+    linearSequence(5, QPoint(20, 20), panSequence, points, &widget);
+    releaseSequence(panSequence, points, &widget);
+
+    if (gestureExpected) {
+        QTRY_VERIFY(widget.gestureReceived(gestureType));
+    } else {
+        QCoreApplication::processEvents();
+        QVERIFY(!widget.gestureReceived(gestureType));
+    }
+}
+
+// --- Pinch
+
+enum PinchSubTest {
+    StandardPinchSubTest
+};
+
+void tst_QGestureRecognizer::pinchGesture_data()
+{
+    QTest::addColumn<int>("pinchSubTest");
+    QTest::addColumn<bool>("gestureExpected");
+    QTest::newRow("Standard") << int(StandardPinchSubTest) << true;
+}
+
+void tst_QGestureRecognizer::pinchGesture()
+{
+    QFETCH(int, pinchSubTest);
+    QFETCH(bool, gestureExpected);
+
+    Q_UNUSED(pinchSubTest)
+
+    const Qt::GestureType gestureType = Qt::PinchGesture;
+    TestWidget widget(GestureTypeVector(1, gestureType));
+    widget.setWindowTitle(QTest::currentTestFunction());
+    widget.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&widget));
+
+    QVector<QPoint> points;
+    points.append(widget.rect().center());
+    points.append(points.front() + QPoint(0, 20));
+
+    QTest::QTouchEventSequence pinchSequence = QTest::touchEvent(&widget, m_touchDevice);
+    pressSequence(pinchSequence, points, &widget);
+
+    for (int s = 0; s < 5; ++s) {
+        points[0] += QPoint(5, 30);
+        pinchSequence.move(0, points[0], &widget);
+        points[1] += QPoint(5, -30);
+        pinchSequence.move(1, points[1], &widget);
+        pinchSequence.commit();
+    }
+
+    releaseSequence(pinchSequence, points, &widget);
+
+    if (gestureExpected) {
+        QTRY_VERIFY(widget.gestureReceived(gestureType));
+    } else {
+        QCoreApplication::processEvents();
+        QVERIFY(!widget.gestureReceived(gestureType));
+    }
+}
+
+// --- Swipe
+
+enum SwipeSubTest {
+    SwipeLineSubTest,
+};
+
+void tst_QGestureRecognizer::swipeGesture_data()
+{
+    QTest::addColumn<int>("swipeSubTest");
+    QTest::addColumn<bool>("gestureExpected");
+    QTest::newRow("Line") << int(SwipeLineSubTest) << true;
+}
+
+void tst_QGestureRecognizer::swipeGesture()
+{
+    enum { swipePoints = 3 };
+
+    QFETCH(int, swipeSubTest);
+    QFETCH(bool, gestureExpected);
+
+    const Qt::GestureType gestureType = Qt::SwipeGesture;
+    TestWidget widget(GestureTypeVector(1, gestureType));
+    widget.setWindowTitle(QTest::currentTestFunction());
+    widget.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&widget));
+
+    // Start a swipe sequence with 2 points (QTBUG-15768)
+    const QPoint fingerDistance(m_fingerDistance, m_fingerDistance);
+    QVector<QPoint> points;
+    for (int i = 0; i < swipePoints - 1; ++i)
+        points.append(fingerDistance + i * fingerDistance);
+
+    QTest::QTouchEventSequence swipeSequence = QTest::touchEvent(&widget, m_touchDevice);
+    pressSequence(swipeSequence, points, &widget);
+
+    // Press point #3
+    points.append(points.last() + fingerDistance);
+    swipeSequence.press(points.size() - 1, points.last(), &widget);
+    swipeSequence.commit();
+    Q_ASSERT(points.size() == swipePoints);
+
+    // Move.
+    const QPoint moveDelta(60, 20);
+    switch (swipeSubTest) {
+    case SwipeLineSubTest:
+        linearSequence(5, moveDelta, swipeSequence, points, &widget);
+        break;
+    }
+
+    releaseSequence(swipeSequence, points, &widget);
+
+    if (gestureExpected) {
+        QTRY_VERIFY(widget.gestureReceived(gestureType));
+    } else {
+        QCoreApplication::processEvents();
+        QVERIFY(!widget.gestureReceived(gestureType));
+    }
+}
+
+#endif // !QT_NO_GESTURES
+
+QTEST_MAIN(tst_QGestureRecognizer)
+
+#include "tst_qgesturerecognizer.moc"

tests/auto/widgets/widgets.pro

@@ -8,3 +8,4 @@ SUBDIRS=\
     styles \
     util \
     widgets \
+    gestures \