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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

2 files changed, 540 insertions, 0 deletions

diff --git a/tests/auto/qscroller/qscroller.pro b/tests/auto/qscroller/qscroller.pro
new file mode 100644
index 0000000000..845dcb9aa4
--- /dev/null
+++ b/tests/auto/qscroller/qscroller.pro
@@ -0,0 +1,3 @@
+load(qttest_p4)
+
+SOURCES += tst_qscroller.cpp
diff --git a/tests/auto/qscroller/tst_qscroller.cpp b/tests/auto/qscroller/tst_qscroller.cpp
new file mode 100644
index 0000000000..a9b3d9fac9
--- /dev/null
+++ b/tests/auto/qscroller/tst_qscroller.cpp
@@ -0,0 +1,537 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <QtTest>
+// #include <QDebug>
+
+class tst_QScrollerWidget : public QWidget
+{
+public:
+    tst_QScrollerWidget()
+        : QWidget()
+    {
+        reset();
+    }
+
+    void reset()
+    {
+        receivedPrepare = false;
+        receivedScroll = false;
+        receivedFirst = false;
+        receivedLast = false;
+        receivedOvershoot = false;
+    }
+
+    bool event(QEvent *e)
+    {
+        switch (e->type()) {
+        case QEvent::Gesture:
+            e->setAccepted(false); // better reject the event or QGestureManager will make trouble
+            return false;
+
+        case QEvent::ScrollPrepare:
+            {
+                receivedPrepare = true;
+                QScrollPrepareEvent *se = static_cast<QScrollPrepareEvent *>(e);
+                se->setViewportSize(QSizeF(100,100));
+                se->setContentPosRange(scrollArea);
+                se->setContentPos(scrollPosition);
+                se->accept();
+                return true;
+            }
+
+        case QEvent::Scroll:
+            {
+                receivedScroll = true;
+                QScrollEvent *se = static_cast<QScrollEvent *>(e);
+                // qDebug() << "Scroll for"<<this<<"pos"<<se->scrollPos()<<"ov"<<se->overshoot()<<"first"<<se->isFirst()<<"last"<<se->isLast();
+
+                if (se->scrollState() == QScrollEvent::ScrollStarted)
+                    receivedFirst = true;
+                if (se->scrollState() == QScrollEvent::ScrollFinished)
+                    receivedLast = true;
+
+                currentPos = se->contentPos();
+                overshoot = se->overshootDistance();
+                if (!qFuzzyCompare( overshoot.x() + 1.0, 1.0 ) ||
+                    !qFuzzyCompare( overshoot.y() + 1.0, 1.0 ))
+                    receivedOvershoot = true;
+                return true;
+            }
+
+        default:
+            return QObject::event(e);
+        }
+    }
+
+
+    QRectF scrollArea;
+    QPointF scrollPosition;
+
+    bool receivedPrepare;
+    bool receivedScroll;
+    bool receivedFirst;
+    bool receivedLast;
+    bool receivedOvershoot;
+
+    QPointF currentPos;
+    QPointF overshoot;
+};
+
+
+class tst_QScroller : public QObject
+{
+    Q_OBJECT
+public:
+    tst_QScroller() { }
+    ~tst_QScroller() { }
+
+private:
+    void kineticScroll( tst_QScrollerWidget *sw, QPointF from, QPoint touchStart, QPoint touchUpdate, QPoint touchEnd);
+    void kineticScrollNoTest( tst_QScrollerWidget *sw, QPointF from, QPoint touchStart, QPoint touchUpdate, QPoint touchEnd);
+
+private slots:
+    void staticScrollers();
+    void scrollerProperties();
+    void scrollTo();
+    void scroll();
+    void overshoot();
+};
+
+/*! \internal
+    Generates touchBegin, touchUpdate and touchEnd events to trigger scrolling.
+    Tests some in between states but does not wait until scrolling is finished.
+*/
+void tst_QScroller::kineticScroll( tst_QScrollerWidget *sw, QPointF from, QPoint touchStart, QPoint touchUpdate, QPoint touchEnd)
+{
+    sw->scrollPosition = from;
+    sw->currentPos= from;
+
+    QScroller *s1 = QScroller::scroller(sw);
+    QCOMPARE( s1->state(), QScroller::Inactive );
+
+    QScrollerProperties sp1 = QScroller::scroller(sw)->scrollerProperties();
+    int fps = 60;
+
+    QTouchEvent::TouchPoint rawTouchPoint;
+    rawTouchPoint.setId(0);
+
+    // send the touch begin event
+    QTouchEvent::TouchPoint touchPoint(0);
+    touchPoint.setState(Qt::TouchPointPressed);
+    touchPoint.setPos(touchStart);
+    touchPoint.setScenePos(touchStart);
+    touchPoint.setScreenPos(touchStart);
+    QTouchEvent touchEvent1(QEvent::TouchBegin,
+                            QTouchEvent::TouchScreen,
+                            Qt::NoModifier,
+                            Qt::TouchPointPressed,
+                            (QList<QTouchEvent::TouchPoint>() << touchPoint));
+    QApplication::sendEvent(sw, &touchEvent1);
+
+    QCOMPARE( s1->state(), QScroller::Pressed );
+
+    // send the touch update far enough to trigger a scroll
+    QTest::qWait(200); // we need to wait a little or else the speed would be infinite. now we have around 500 pixel per second.
+    touchPoint.setPos(touchUpdate);
+    touchPoint.setScenePos(touchUpdate);
+    touchPoint.setScreenPos(touchUpdate);
+    QTouchEvent touchEvent2(QEvent::TouchUpdate,
+                            QTouchEvent::TouchScreen,
+                            Qt::NoModifier,
+                            Qt::TouchPointMoved,
+                            (QList<QTouchEvent::TouchPoint>() << touchPoint));
+    QApplication::sendEvent(sw, &touchEvent2);
+
+    QCOMPARE( s1->state(), QScroller::Dragging );
+    QCOMPARE( sw->receivedPrepare, true );
+
+
+    QTest::qWait(1000 / fps * 2); // wait until the first scroll move
+    QCOMPARE( sw->receivedFirst, true );
+    QCOMPARE( sw->receivedScroll, true );
+    QCOMPARE( sw->receivedOvershoot, false );
+
+    // note that the scrolling goes in a different direction than the mouse move
+    QPoint calculatedPos = from.toPoint() - touchUpdate - touchStart;
+    QVERIFY(qAbs(sw->currentPos.x() - calculatedPos.x()) < 1.0);
+    QVERIFY(qAbs(sw->currentPos.y() - calculatedPos.y()) < 1.0);
+
+    // send the touch end
+    touchPoint.setPos(touchEnd);
+    touchPoint.setScenePos(touchEnd);
+    touchPoint.setScreenPos(touchEnd);
+    QTouchEvent touchEvent5(QEvent::TouchEnd,
+                            QTouchEvent::TouchScreen,
+                            Qt::NoModifier,
+                            Qt::TouchPointReleased,
+                            (QList<QTouchEvent::TouchPoint>() << touchPoint));
+    QApplication::sendEvent(sw, &touchEvent5);
+}
+
+/*! \internal
+    Generates touchBegin, touchUpdate and touchEnd events to trigger scrolling.
+    This function does not have any in between tests, it does not expect the scroller to actually scroll.
+*/
+void tst_QScroller::kineticScrollNoTest( tst_QScrollerWidget *sw, QPointF from, QPoint touchStart, QPoint touchUpdate, QPoint touchEnd)
+{
+    sw->scrollPosition = from;
+    sw->currentPos = from;
+
+    QScroller *s1 = QScroller::scroller(sw);
+    QCOMPARE( s1->state(), QScroller::Inactive );
+
+    QScrollerProperties sp1 = s1->scrollerProperties();
+    int fps = 60;
+
+    QTouchEvent::TouchPoint rawTouchPoint;
+    rawTouchPoint.setId(0);
+
+    // send the touch begin event
+    QTouchEvent::TouchPoint touchPoint(0);
+    touchPoint.setState(Qt::TouchPointPressed);
+    touchPoint.setPos(touchStart);
+    touchPoint.setScenePos(touchStart);
+    touchPoint.setScreenPos(touchStart);
+    QTouchEvent touchEvent1(QEvent::TouchBegin,
+                            QTouchEvent::TouchScreen,
+                            Qt::NoModifier,
+                            Qt::TouchPointPressed,
+                            (QList<QTouchEvent::TouchPoint>() << touchPoint));
+    QApplication::sendEvent(sw, &touchEvent1);
+
+    // send the touch update far enough to trigger a scroll
+    QTest::qWait(200); // we need to wait a little or else the speed would be infinite. now we have around 500 pixel per second.
+    touchPoint.setPos(touchUpdate);
+    touchPoint.setScenePos(touchUpdate);
+    touchPoint.setScreenPos(touchUpdate);
+    QTouchEvent touchEvent2(QEvent::TouchUpdate,
+                            QTouchEvent::TouchScreen,
+                            Qt::NoModifier,
+                            Qt::TouchPointMoved,
+                            (QList<QTouchEvent::TouchPoint>() << touchPoint));
+    QApplication::sendEvent(sw, &touchEvent2);
+
+    QTest::qWait(1000 / fps * 2); // wait until the first scroll move
+
+    // send the touch end
+    touchPoint.setPos(touchEnd);
+    touchPoint.setScenePos(touchEnd);
+    touchPoint.setScreenPos(touchEnd);
+    QTouchEvent touchEvent5(QEvent::TouchEnd,
+                            QTouchEvent::TouchScreen,
+                            Qt::NoModifier,
+                            Qt::TouchPointReleased,
+                            (QList<QTouchEvent::TouchPoint>() << touchPoint));
+    QApplication::sendEvent(sw, &touchEvent5);
+}
+
+
+void tst_QScroller::staticScrollers()
+{
+    // scrollers
+    {
+        QObject *o1 = new QObject(this);
+        QObject *o2 = new QObject(this);
+
+        // get scroller for object
+        QScroller *s1 = QScroller::scroller(o1);
+        QScroller *s2 = QScroller::scroller(o2);
+
+        QVERIFY(s1);
+        QVERIFY(s2);
+        QVERIFY(s1 != s2);
+
+        QVERIFY(!QScroller::scroller(static_cast<const QObject*>(0)));
+        QCOMPARE(QScroller::scroller(o1), s1);
+
+        delete o1;
+        delete o2;
+    }
+
+    // the same for properties
+    {
+        QObject *o1 = new QObject(this);
+        QObject *o2 = new QObject(this);
+
+        // get scroller for object
+        QScrollerProperties sp1 = QScroller::scroller(o1)->scrollerProperties();
+        QScrollerProperties sp2 = QScroller::scroller(o2)->scrollerProperties();
+
+        // default properties should be the same
+        QVERIFY(sp1 == sp2);
+
+        QCOMPARE(QScroller::scroller(o1)->scrollerProperties(), sp1);
+
+        delete o1;
+        delete o2;
+    }
+}
+
+void tst_QScroller::scrollerProperties()
+{
+    QObject *o1 = new QObject(this);
+    QScrollerProperties sp1 = QScroller::scroller(o1)->scrollerProperties();
+
+    QScrollerProperties::ScrollMetric metrics[] =
+    {
+        QScrollerProperties::MousePressEventDelay,                    // qreal [s]
+        QScrollerProperties::DragStartDistance,                       // qreal [m]
+        QScrollerProperties::DragVelocitySmoothingFactor,             // qreal [0..1/s]  (complex calculation involving time) v = v_new* DASF + v_old * (1-DASF)
+        QScrollerProperties::AxisLockThreshold,                       // qreal [0..1] atan(|min(dx,dy)|/|max(dx,dy)|)
+
+        QScrollerProperties::DecelerationFactor,                      // slope of the curve
+
+        QScrollerProperties::MinimumVelocity,                         // qreal [m/s]
+        QScrollerProperties::MaximumVelocity,                         // qreal [m/s]
+        QScrollerProperties::MaximumClickThroughVelocity,             // qreal [m/s]
+
+        QScrollerProperties::AcceleratingFlickMaximumTime,            // qreal [s]
+        QScrollerProperties::AcceleratingFlickSpeedupFactor,          // qreal [1..]
+
+        QScrollerProperties::SnapPositionRatio,                       // qreal [0..1]
+        QScrollerProperties::SnapTime,                                // qreal [s]
+
+        QScrollerProperties::OvershootDragResistanceFactor,           // qreal [0..1]
+        QScrollerProperties::OvershootDragDistanceFactor,             // qreal [0..1]
+        QScrollerProperties::OvershootScrollDistanceFactor,           // qreal [0..1]
+        QScrollerProperties::OvershootScrollTime,                     // qreal [s]
+    };
+
+    for (unsigned int i = 0; i < sizeof(metrics) / sizeof(metrics[0]); i++) {
+        sp1.setScrollMetric(metrics[i], 0.9);
+        QCOMPARE(sp1.scrollMetric(metrics[i]).toDouble(), 0.9);
+    }
+    sp1.setScrollMetric(QScrollerProperties::ScrollingCurve, QEasingCurve(QEasingCurve::OutQuart));
+    QCOMPARE(sp1.scrollMetric(QScrollerProperties::ScrollingCurve).toEasingCurve().type(), QEasingCurve::OutQuart);
+
+    sp1.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QVariant::fromValue(QScrollerProperties::OvershootAlwaysOff));
+    QCOMPARE(sp1.scrollMetric(QScrollerProperties::HorizontalOvershootPolicy).value<QScrollerProperties::OvershootPolicy>(), QScrollerProperties::OvershootAlwaysOff);
+
+    sp1.setScrollMetric(QScrollerProperties::VerticalOvershootPolicy, QVariant::fromValue(QScrollerProperties::OvershootAlwaysOn));
+    QCOMPARE(sp1.scrollMetric(QScrollerProperties::VerticalOvershootPolicy).value<QScrollerProperties::OvershootPolicy>(), QScrollerProperties::OvershootAlwaysOn);
+
+    sp1.setScrollMetric(QScrollerProperties::FrameRate, QVariant::fromValue(QScrollerProperties::Fps20));
+    QCOMPARE(sp1.scrollMetric(QScrollerProperties::FrameRate).value<QScrollerProperties::FrameRates>(), QScrollerProperties::Fps20);
+}
+
+void tst_QScroller::scrollTo()
+{
+    {
+        tst_QScrollerWidget *sw = new tst_QScrollerWidget();
+        sw->scrollArea = QRectF( 0, 0, 1000, 1000 );
+        sw->scrollPosition = QPointF( 500, 500 );
+
+        QScroller *s1 = QScroller::scroller(sw);
+        QCOMPARE( s1->state(), QScroller::Inactive );
+
+        // a normal scroll
+        s1->scrollTo(QPointF(100,100), 100);
+        QTest::qWait(200);
+
+        QCOMPARE( sw->receivedPrepare, true );
+        QCOMPARE( sw->receivedScroll, true );
+        QCOMPARE( sw->receivedFirst, true );
+        QCOMPARE( sw->receivedLast, true );
+        QCOMPARE( sw->receivedOvershoot, false );
+        QVERIFY(qFuzzyCompare( sw->currentPos.x(), 100 ));
+        QVERIFY(qFuzzyCompare( sw->currentPos.y(), 100 ));
+
+        delete sw;
+    }
+}
+
+void tst_QScroller::scroll()
+{
+#if defined(Q_OS_MACX) && (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_6)
+    QSKIP("Mac OS X < 10.6 does not support QTouchEvents", SkipAll);
+    return;
+#endif
+
+#ifndef QT_NO_GESTURES
+    // -- good case. normal scroll
+    tst_QScrollerWidget *sw = new tst_QScrollerWidget();
+    sw->scrollArea = QRectF(0, 0, 1000, 1000);
+    QScroller::grabGesture(sw, QScroller::TouchGesture);
+    sw->setGeometry(100, 100, 400, 300);
+
+    QScroller *s1 = QScroller::scroller(sw);
+    kineticScroll(sw, QPointF(500, 500), QPoint(0, 0), QPoint(100, 100), QPoint(200, 200));
+    // now we should be scrolling
+    QCOMPARE( s1->state(), QScroller::Scrolling );
+
+    // wait until finished, check that no further first scroll is send
+    sw->receivedFirst = false;
+    sw->receivedScroll = false;
+    while (s1->state() == QScroller::Scrolling)
+        QTest::qWait(100);
+
+    QCOMPARE( sw->receivedFirst, false );
+    QCOMPARE( sw->receivedScroll, true );
+    QCOMPARE( sw->receivedLast, true );
+    QVERIFY(sw->currentPos.x() < 400);
+    QVERIFY(sw->currentPos.y() < 400);
+
+    // -- try to scroll when nothing to scroll
+
+    sw->reset();
+    sw->scrollArea = QRectF(0, 0, 0, 1000);
+    kineticScrollNoTest(sw, QPointF(0, 500), QPoint(0, 0), QPoint(100, 0), QPoint(200, 0));
+
+    while (s1->state() != QScroller::Inactive)
+        QTest::qWait(20);
+
+    QCOMPARE(sw->currentPos.x(), 0.0);
+    QCOMPARE(sw->currentPos.y(), 500.0);
+
+    delete sw;
+#endif
+}
+
+void tst_QScroller::overshoot()
+{
+#if defined(Q_OS_MACX) && (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_6)
+    QSKIP("Mac OS X < 10.6 does not support QTouchEvents", SkipAll);
+    return;
+#endif
+
+#ifndef QT_NO_GESTURES
+    tst_QScrollerWidget *sw = new tst_QScrollerWidget();
+    sw->scrollArea = QRectF(0, 0, 1000, 1000);
+    QScroller::grabGesture(sw, QScroller::TouchGesture);
+    sw->setGeometry(100, 100, 400, 300);
+
+    QScroller *s1 = QScroller::scroller(sw);
+    QScrollerProperties sp1 = s1->scrollerProperties();
+
+    sp1.setScrollMetric(QScrollerProperties::OvershootDragResistanceFactor, 0.5);
+    sp1.setScrollMetric(QScrollerProperties::OvershootDragDistanceFactor, 0.2);
+    sp1.setScrollMetric(QScrollerProperties::OvershootScrollDistanceFactor, 0.2);
+
+    // -- try to scroll with overshoot (when scrollable good case)
+
+    sp1.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QVariant::fromValue(QScrollerProperties::OvershootWhenScrollable));
+    s1->setScrollerProperties(sp1);
+    kineticScrollNoTest(sw, QPointF(500, 500), QPoint(0, 0), QPoint(400, 0), QPoint(490, 0));
+
+    while (s1->state() != QScroller::Inactive)
+        QTest::qWait(20);
+
+    //qDebug() << "Overshoot fuzzy: "<<sw->currentPos;
+    QVERIFY(qFuzzyCompare( sw->currentPos.x(), 0 ));
+    QVERIFY(qFuzzyCompare( sw->currentPos.y(), 500 ));
+    QCOMPARE( sw->receivedOvershoot, true );
+
+    // -- try to scroll with overshoot (when scrollable bad case)
+    sw->reset();
+    sw->scrollArea = QRectF(0, 0, 0, 1000);
+
+    sp1.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QVariant::fromValue(QScrollerProperties::OvershootWhenScrollable));
+    s1->setScrollerProperties(sp1);
+    kineticScrollNoTest(sw, QPointF(0, 500), QPoint(0, 0), QPoint(400, 0), QPoint(490, 0));
+
+    while (s1->state() != QScroller::Inactive)
+        QTest::qWait(20);
+
+    //qDebug() << "Overshoot fuzzy: "<<sw->currentPos;
+    QVERIFY(qFuzzyCompare( sw->currentPos.x(), 0 ));
+    QVERIFY(qFuzzyCompare( sw->currentPos.y(), 500 ));
+    QCOMPARE( sw->receivedOvershoot, false );
+
+    // -- try to scroll with overshoot (always on)
+    sw->reset();
+    sw->scrollArea = QRectF(0, 0, 0, 1000);
+
+    sp1.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QVariant::fromValue(QScrollerProperties::OvershootAlwaysOn));
+    s1->setScrollerProperties(sp1);
+    kineticScrollNoTest(sw, QPointF(0, 500), QPoint(0, 0), QPoint(400, 0), QPoint(490, 0));
+
+    while (s1->state() != QScroller::Inactive)
+        QTest::qWait(20);
+
+    //qDebug() << "Overshoot fuzzy: "<<sw->currentPos;
+
+    QVERIFY(qFuzzyCompare( sw->currentPos.x(), 0 ));
+    QVERIFY(qFuzzyCompare( sw->currentPos.y(), 500 ));
+    QCOMPARE( sw->receivedOvershoot, true );
+
+    // -- try to scroll with overshoot (always off)
+    sw->reset();
+    sw->scrollArea = QRectF(0, 0, 1000, 1000);
+
+    sp1.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QVariant::fromValue(QScrollerProperties::OvershootAlwaysOff));
+    s1->setScrollerProperties(sp1);
+    kineticScrollNoTest(sw, QPointF(500, 500), QPoint(0, 0), QPoint(400, 0), QPoint(490, 0));
+
+    while (s1->state() != QScroller::Inactive)
+        QTest::qWait(20);
+
+    QVERIFY(qFuzzyCompare( sw->currentPos.x(), 0 ));
+    QVERIFY(qFuzzyCompare( sw->currentPos.y(), 500 ));
+    QCOMPARE( sw->receivedOvershoot, false );
+
+    // -- try to scroll with overshoot (always on but max overshoot = 0)
+    sp1.setScrollMetric(QScrollerProperties::OvershootDragDistanceFactor, 0.0);
+    sp1.setScrollMetric(QScrollerProperties::OvershootScrollDistanceFactor, 0.0);
+    sw->reset();
+    sw->scrollArea = QRectF(0, 0, 1000, 1000);
+
+    sp1.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QVariant::fromValue(QScrollerProperties::OvershootAlwaysOn));
+    s1->setScrollerProperties(sp1);
+    kineticScrollNoTest(sw, QPointF(500, 500), QPoint(0, 0), QPoint(400, 0), QPoint(490, 0));
+
+    while (s1->state() != QScroller::Inactive)
+        QTest::qWait(20);
+
+    QVERIFY(qFuzzyCompare( sw->currentPos.x(), 0 ));
+    QVERIFY(qFuzzyCompare( sw->currentPos.y(), 500 ));
+    QCOMPARE( sw->receivedOvershoot, false );
+
+
+    delete sw;
+#endif
+}
+
+
+QTEST_MAIN(tst_QScroller)
+
+#include "tst_qscroller.moc"