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qt5base-lts/tests/auto/widgets/util/qscroller/tst_qscroller.cpp
Laszlo Agocs 4222603f8e Extend touch events. 
The capability flags indicate which information is valid in the touch
points. Previously there was no way to tell if e.g. the value returned
by pressure() is actually the value provided by the driver/device or
it is just something bogus due to pressure not being supported.

The points' flags return information about the individual touch
points. One use case is to differentiate between touches made by
finger and pen.

Velocity, if available, is now also exposed.

Each touch point can now contain an additional list of "raw"
positions. These points are not reported individually but are taken
into account in some way by the underlying device and drivers to
generate the final, "accurate" touch point. In case the underlying
drivers expose these additional positions, they are made available in
the lists returned by the touch points' rawScreenPosition().

The raw positions are only available in screen coordinates to prevent
wasting time with mapping from global positions in applications that
do not use this data. Instead, apps can query the QWindow to which the
touch event was sent via QTouchEvent::window() and can call
mapFromGlobal() manually if they need local raw positions.

The capability and device type information is now held in a new
QTouchDevice class. Each touch event will contain only a pointer to
one of the global QTouchDevice instances. On top of type and
capability, the new class also contains a name which can be used to
differentiate between multiple touch input devices (i.e. to tell from
which one a given QTouchEvent originates from).

The introduction of QTouchDevice has three implications: The
QTouchEvent constructor and QWindowSystemInterface::handleTouchEvent
need to be changed (to pass a QTouchDevice pointer instead of merely a
device type value), and each platform or generic plug-in is now
responsible for registering one or more devices using the new API
QWindowSystemInterface::registerTouchDevice.

Change-Id: Ic1468d3e43933d8b5691d75aa67c43e1bc7ffe3e
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
2011-12-09 14:15:37 +01:00

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/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include <QtWidgets>
#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);
QTouchDevice *device = new QTouchDevice;
device->setType(QTouchDevice::TouchScreen);
QWindowSystemInterface::registerTouchDevice(device);
QTouchEvent touchEvent1(QEvent::TouchBegin,
device,
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,
device,
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,
device,
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);
QTouchDevice *device = new QTouchDevice;
device->setType(QTouchDevice::TouchScreen);
QWindowSystemInterface::registerTouchDevice(device);
QTouchEvent touchEvent1(QEvent::TouchBegin,
device,
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,
device,
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,
device,
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");
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");
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"
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