qgesture.cpp

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// Copyright (C) 2016 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
 
#include "qgesture.h"
#include "private/qgesture_p.h"
#include "private/qstandardgestures_p.h"
#if QT_CONFIG(graphicsview)
#include "qgraphicsview.h"
#endif
 
#include <private/qdebug_p.h>
#ifndef QT_NO_GESTURES
 
QT_BEGIN_NAMESPACE
 
QT_IMPL_METATYPE_EXTERN_TAGGED(Qt::GestureState, Qt__GestureState)
QT_IMPL_METATYPE_EXTERN_TAGGED(Qt::GestureType, Qt__GestureType)
QT_IMPL_METATYPE_EXTERN_TAGGED(QPinchGesture::ChangeFlags,
                               QPinchGesture__ChangeFlags)
QT_IMPL_METATYPE_EXTERN_TAGGED(QGesture::GestureCancelPolicy,
                               QGesture__GestureCancelPolicy)
 
 
QGesture::QGesture(QObject *parent)
    : QObject(*new QGesturePrivate, parent)
{
    d_func()->gestureType = Qt::CustomGesture;
}
 
QGesture::QGesture(QGesturePrivate &dd, QObject *parent)
    : QObject(dd, parent)
{
}
 
QGesture::~QGesture()
{
}
 
Qt::GestureType QGesture::gestureType() const
{
    return d_func()->gestureType;
}
 
Qt::GestureState QGesture::state() const
{
    return d_func()->state;
}
 
QPointF QGesture::hotSpot() const
{
    return d_func()->hotSpot;
}
 
void QGesture::setHotSpot(const QPointF &value)
{
    Q_D(QGesture);
    d->hotSpot = value;
    d->isHotSpotSet = true;
}
 
bool QGesture::hasHotSpot() const
{
    return d_func()->isHotSpotSet;
}
 
void QGesture::unsetHotSpot()
{
    d_func()->isHotSpotSet = false;
}
 
void QGesture::setGestureCancelPolicy(GestureCancelPolicy policy)
{
    Q_D(QGesture);
    d->gestureCancelPolicy = static_cast<uint>(policy);
}
 
QGesture::GestureCancelPolicy QGesture::gestureCancelPolicy() const
{
    Q_D(const QGesture);
    return static_cast<GestureCancelPolicy>(d->gestureCancelPolicy);
}
 
QPanGesture::QPanGesture(QObject *parent)
    : QGesture(*new QPanGesturePrivate, parent)
{
    d_func()->gestureType = Qt::PanGesture;
}
 
QPanGesture::~QPanGesture()
{
}
 
QPointF QPanGesture::lastOffset() const
{
    return d_func()->lastOffset;
}
 
QPointF QPanGesture::offset() const
{
    return d_func()->offset;
}
 
QPointF QPanGesture::delta() const
{
    Q_D(const QPanGesture);
    return d->offset - d->lastOffset;
}
 
qreal QPanGesture::acceleration() const
{
    return d_func()->acceleration;
}
 
void QPanGesture::setLastOffset(const QPointF &value)
{
    d_func()->lastOffset = value;
}
 
void QPanGesture::setOffset(const QPointF &value)
{
    d_func()->offset = value;
}
 
void QPanGesture::setAcceleration(qreal value)
{
    d_func()->acceleration = value;
}
 
QPinchGesture::QPinchGesture(QObject *parent)
    : QGesture(*new QPinchGesturePrivate, parent)
{
    d_func()->gestureType = Qt::PinchGesture;
}
 
QPinchGesture::~QPinchGesture()
{
}
 
QPinchGesture::ChangeFlags QPinchGesture::totalChangeFlags() const
{
    return d_func()->totalChangeFlags;
}
 
void QPinchGesture::setTotalChangeFlags(QPinchGesture::ChangeFlags value)
{
    d_func()->totalChangeFlags = value;
}
 
QPinchGesture::ChangeFlags QPinchGesture::changeFlags() const
{
    return d_func()->changeFlags;
}
 
void QPinchGesture::setChangeFlags(QPinchGesture::ChangeFlags value)
{
    d_func()->changeFlags = value;
}
 
QPointF QPinchGesture::startCenterPoint() const
{
    return d_func()->startCenterPoint;
}
 
QPointF QPinchGesture::lastCenterPoint() const
{
    return d_func()->lastCenterPoint;
}
 
QPointF QPinchGesture::centerPoint() const
{
    return d_func()->centerPoint;
}
 
void QPinchGesture::setStartCenterPoint(const QPointF &value)
{
    d_func()->startCenterPoint = value;
}
 
void QPinchGesture::setLastCenterPoint(const QPointF &value)
{
    d_func()->lastCenterPoint = value;
}
 
void QPinchGesture::setCenterPoint(const QPointF &value)
{
    d_func()->centerPoint = value;
}
 
 
qreal QPinchGesture::totalScaleFactor() const
{
    return d_func()->totalScaleFactor;
}
 
qreal QPinchGesture::lastScaleFactor() const
{
    return d_func()->lastScaleFactor;
}
 
qreal QPinchGesture::scaleFactor() const
{
    return d_func()->scaleFactor;
}
 
void QPinchGesture::setTotalScaleFactor(qreal value)
{
    d_func()->totalScaleFactor = value;
}
 
void QPinchGesture::setLastScaleFactor(qreal value)
{
    d_func()->lastScaleFactor = value;
}
 
void QPinchGesture::setScaleFactor(qreal value)
{
    d_func()->scaleFactor = value;
}
 
 
qreal QPinchGesture::totalRotationAngle() const
{
    return d_func()->totalRotationAngle;
}
 
qreal QPinchGesture::lastRotationAngle() const
{
    return d_func()->lastRotationAngle;
}
 
qreal QPinchGesture::rotationAngle() const
{
    return d_func()->rotationAngle;
}
 
void QPinchGesture::setTotalRotationAngle(qreal value)
{
    d_func()->totalRotationAngle = value;
}
 
void QPinchGesture::setLastRotationAngle(qreal value)
{
    d_func()->lastRotationAngle = value;
}
 
void QPinchGesture::setRotationAngle(qreal value)
{
    d_func()->rotationAngle = value;
}
 
QSwipeGesture::QSwipeGesture(QObject *parent)
    : QGesture(*new QSwipeGesturePrivate, parent)
{
    d_func()->gestureType = Qt::SwipeGesture;
}
 
QSwipeGesture::~QSwipeGesture()
{
}
 
QSwipeGesture::SwipeDirection QSwipeGesture::horizontalDirection() const
{
    Q_D(const QSwipeGesture);
    if (d->swipeAngle < 0 || d->swipeAngle == 90 || d->swipeAngle == 270)
        return QSwipeGesture::NoDirection;
    else if (d->swipeAngle < 90 || d->swipeAngle > 270)
        return QSwipeGesture::Right;
    else
        return QSwipeGesture::Left;
}
 
QSwipeGesture::SwipeDirection QSwipeGesture::verticalDirection() const
{
    Q_D(const QSwipeGesture);
    if (d->swipeAngle <= 0 || d->swipeAngle == 180)
        return QSwipeGesture::NoDirection;
    else if (d->swipeAngle < 180)
        return QSwipeGesture::Up;
    else
        return QSwipeGesture::Down;
}
 
qreal QSwipeGesture::swipeAngle() const
{
    return d_func()->swipeAngle;
}
 
void QSwipeGesture::setSwipeAngle(qreal value)
{
    d_func()->swipeAngle = value;
}
 
QTapGesture::QTapGesture(QObject *parent)
    : QGesture(*new QTapGesturePrivate, parent)
{
    d_func()->gestureType = Qt::TapGesture;
}
 
QTapGesture::~QTapGesture()
{
}
 
QPointF QTapGesture::position() const
{
    return d_func()->position;
}
 
void QTapGesture::setPosition(const QPointF &value)
{
    d_func()->position = value;
}
QTapAndHoldGesture::QTapAndHoldGesture(QObject *parent)
    : QGesture(*new QTapAndHoldGesturePrivate, parent)
{
    d_func()->gestureType = Qt::TapAndHoldGesture;
}
 
QTapAndHoldGesture::~QTapAndHoldGesture()
{
}
 
QPointF QTapAndHoldGesture::position() const
{
    return d_func()->position;
}
 
void QTapAndHoldGesture::setPosition(const QPointF &value)
{
    d_func()->position = value;
}
 
void QTapAndHoldGesture::setTimeout(int msecs)
{
    QTapAndHoldGesturePrivate::Timeout = msecs;
}
 
int QTapAndHoldGesture::timeout()
{
    return QTapAndHoldGesturePrivate::Timeout;
}
 
int QTapAndHoldGesturePrivate::Timeout = 700; // in ms
 
 
QGestureEvent::QGestureEvent(const QList<QGesture *> &gestures)
    : QEvent(QEvent::Gesture), m_gestures(gestures), m_widget(nullptr)
 
{
}
 
QGestureEvent::~QGestureEvent()
{
}
 
QList<QGesture *> QGestureEvent::gestures() const
{
    return m_gestures;
}
 
QGesture *QGestureEvent::gesture(Qt::GestureType type) const
{
    for (int i = 0; i < m_gestures.size(); ++i)
        if (m_gestures.at(i)->gestureType() == type)
            return m_gestures.at(i);
    return nullptr;
}
 
QList<QGesture *> QGestureEvent::activeGestures() const
{
    QList<QGesture *> gestures;
    for (QGesture *gesture : m_gestures) {
        if (gesture->state() != Qt::GestureCanceled)
            gestures.append(gesture);
    }
    return gestures;
}
 
QList<QGesture *> QGestureEvent::canceledGestures() const
{
    QList<QGesture *> gestures;
    for (QGesture *gesture : m_gestures) {
        if (gesture->state() == Qt::GestureCanceled)
            gestures.append(gesture);
    }
    return gestures;
}
 
void QGestureEvent::setAccepted(QGesture *gesture, bool value)
{
    if (gesture)
        setAccepted(gesture->gestureType(), value);
}
 
void QGestureEvent::accept(QGesture *gesture)
{
    if (gesture)
        setAccepted(gesture->gestureType(), true);
}
 
void QGestureEvent::ignore(QGesture *gesture)
{
    if (gesture)
        setAccepted(gesture->gestureType(), false);
}
 
bool QGestureEvent::isAccepted(QGesture *gesture) const
{
    return gesture ? isAccepted(gesture->gestureType()) : false;
}
 
void QGestureEvent::setAccepted(Qt::GestureType gestureType, bool value)
{
    setAccepted(false);
    m_accepted[gestureType] = value;
}
 
void QGestureEvent::accept(Qt::GestureType gestureType)
{
    setAccepted(gestureType, true);
}
 
void QGestureEvent::ignore(Qt::GestureType gestureType)
{
    setAccepted(gestureType, false);
}
 
bool QGestureEvent::isAccepted(Qt::GestureType gestureType) const
{
    return m_accepted.value(gestureType, true);
}
 
void QGestureEvent::setWidget(QWidget *widget)
{
    m_widget = widget;
}
 
QWidget *QGestureEvent::widget() const
{
    return m_widget;
}
 
#if QT_CONFIG(graphicsview)
QPointF QGestureEvent::mapToGraphicsScene(const QPointF &gesturePoint) const
{
    QWidget *w = widget();
    if (w) // we get the viewport as widget, not the graphics view
        w = w->parentWidget();
    QGraphicsView *view = qobject_cast<QGraphicsView*>(w);
    if (view) {
        return view->mapToScene(view->mapFromGlobal(gesturePoint.toPoint()));
    }
    return QPointF();
}
#endif // QT_CONFIG(graphicsview)
 
#ifndef QT_NO_DEBUG_STREAM
 
static void formatGestureHeader(QDebug d, const char *className, const QGesture *gesture)
{
     d << className << "(state=";
     QtDebugUtils::formatQEnum(d, gesture->state());
     if (gesture->hasHotSpot()) {
         d << ",hotSpot=";
         QtDebugUtils::formatQPoint(d, gesture->hotSpot());
     }
}
 
Q_WIDGETS_EXPORT QDebug operator<<(QDebug d, const QGesture *gesture)
{
    QDebugStateSaver saver(d);
    d.nospace();
    switch (gesture->gestureType()) {
    case Qt::TapGesture:
        formatGestureHeader(d, "QTapGesture", gesture);
        d << ",position=";
        QtDebugUtils::formatQPoint(d, static_cast<const QTapGesture*>(gesture)->position());
        d << ')';
        break;
    case Qt::TapAndHoldGesture: {
        const QTapAndHoldGesture *tap = static_cast<const QTapAndHoldGesture*>(gesture);
        formatGestureHeader(d, "QTapAndHoldGesture", tap);
        d << ",position=";
        QtDebugUtils::formatQPoint(d, tap->position());
        d << ",timeout=" << tap->timeout() << ')';
    }
        break;
    case Qt::PanGesture: {
        const QPanGesture *pan = static_cast<const QPanGesture*>(gesture);
        formatGestureHeader(d, "QPanGesture", pan);
        d << ",lastOffset=";
        QtDebugUtils::formatQPoint(d, pan->lastOffset());
        d << pan->lastOffset();
        d << ",offset=";
        QtDebugUtils::formatQPoint(d, pan->offset());
        d  << ",acceleration=" << pan->acceleration() << ",delta=";
        QtDebugUtils::formatQPoint(d, pan->delta());
        d << ')';
    }
        break;
    case Qt::PinchGesture: {
        const QPinchGesture *pinch = static_cast<const QPinchGesture*>(gesture);
        formatGestureHeader(d, "QPinchGesture", pinch);
        d << ",totalChangeFlags=" << pinch->totalChangeFlags()
          << ",changeFlags=" << pinch->changeFlags() << ",startCenterPoint=";
        QtDebugUtils::formatQPoint(d, pinch->startCenterPoint());
        d << ",lastCenterPoint=";
        QtDebugUtils::formatQPoint(d, pinch->lastCenterPoint());
        d << ",centerPoint=";
        QtDebugUtils::formatQPoint(d, pinch->centerPoint());
        d << ",totalScaleFactor=" << pinch->totalScaleFactor()
            << ",lastScaleFactor=" << pinch->lastScaleFactor()
            << ",scaleFactor=" << pinch->scaleFactor()
            << ",totalRotationAngle=" << pinch->totalRotationAngle()
            << ",lastRotationAngle=" << pinch->lastRotationAngle()
            << ",rotationAngle=" << pinch->rotationAngle() << ')';
    }
        break;
    case Qt::SwipeGesture: {
        const QSwipeGesture *swipe = static_cast<const QSwipeGesture*>(gesture);
        formatGestureHeader(d, "QSwipeGesture", swipe);
        d << ",horizontalDirection=";
        QtDebugUtils::formatQEnum(d, swipe->horizontalDirection());
        d << ",verticalDirection=";
        QtDebugUtils::formatQEnum(d, swipe->verticalDirection());
        d << ",swipeAngle=" << swipe->swipeAngle() << ')';
    }
        break;
    default:
        formatGestureHeader(d, "Custom gesture", gesture);
        d << ",type=" << gesture->gestureType() << ')';
        break;
    }
    return d;
}
 
Q_WIDGETS_EXPORT QDebug operator<<(QDebug d, const QGestureEvent *gestureEvent)
{
    QDebugStateSaver saver(d);
    d.nospace();
    d << "QGestureEvent(" << gestureEvent->gestures() << ')';
    return d;
}
 
#endif // !QT_NO_DEBUG_STREAM
QT_END_NAMESPACE
 
#include <moc_qgesture.cpp>
 
#endif // QT_NO_GESTURES