diff options
Diffstat (limited to 'src/gui/kernel/qevent.cpp')
| -rw-r--r-- | src/gui/kernel/qevent.cpp | 175 |
1 files changed, 157 insertions, 18 deletions
diff --git a/src/gui/kernel/qevent.cpp b/src/gui/kernel/qevent.cpp index 2ff6d65c0b..ad68aea420 100644 --- a/src/gui/kernel/qevent.cpp +++ b/src/gui/kernel/qevent.cpp @@ -45,6 +45,7 @@ #include "private/qapplication_p.h" #include "private/qkeysequence_p.h" #include "qwidget.h" +#include "qgraphicsview.h" #include "qdebug.h" #include "qmime.h" #include "qdnd_p.h" @@ -4201,7 +4202,7 @@ QTouchEvent::TouchPoint &QTouchEvent::TouchPoint::operator=(const QTouchEvent::T \brief The QGestureEvent class provides the description of triggered gestures. The QGestureEvent class contains a list of gestures, which can be obtained using the - allGestures() function. + gestures() function. The gestures are either active or canceled. A list of those that are currently being executed can be obtained using the activeGestures() function. A list of those which @@ -4210,10 +4211,11 @@ QTouchEvent::TouchPoint &QTouchEvent::TouchPoint::operator=(const QTouchEvent::T focus, for example, or because of a timeout, or for other reasons. If the event handler does not accept the event by calling the generic - QEvent::accept() function, all individual QGesture object that were not accepted - will be propagated up the parent widget chain until a widget accepts them - individually, by calling QGestureEvent::accept() for each of them, or an event - filter consumes the event. + QEvent::accept() function, all individual QGesture object that were not + accepted and in the Qt::GestureStarted state will be propagated up the + parent widget chain until a widget accepts them individually, by calling + QGestureEvent::accept() for each of them, or an event filter consumes the + event. \sa QGesture, QGestureRecognizer, QWidget::grabGesture(), QGraphicsObject::grabGesture() @@ -4223,16 +4225,25 @@ QTouchEvent::TouchPoint &QTouchEvent::TouchPoint::operator=(const QTouchEvent::T Creates new QGestureEvent containing a list of \a gestures. */ QGestureEvent::QGestureEvent(const QList<QGesture *> &gestures) - : QEvent(QEvent::Gesture), gestures_(gestures) + : QEvent(QEvent::Gesture) { + d = reinterpret_cast<QEventPrivate *>(new QGestureEventPrivate(gestures)); +} + +/*! + Destroys QGestureEvent. +*/ +QGestureEvent::~QGestureEvent() +{ + delete reinterpret_cast<QGestureEventPrivate *>(d); } /*! Returns all gestures that are delivered in the event. */ -QList<QGesture *> QGestureEvent::allGestures() const +QList<QGesture *> QGestureEvent::gestures() const { - return gestures_; + return d_func()->gestures; } /*! @@ -4240,9 +4251,10 @@ QList<QGesture *> QGestureEvent::allGestures() const */ QGesture *QGestureEvent::gesture(Qt::GestureType type) const { - for(int i = 0; i < gestures_.size(); ++i) - if (gestures_.at(i)->gestureType() == type) - return gestures_.at(i); + const QGestureEventPrivate *d = d_func(); + for(int i = 0; i < d->gestures.size(); ++i) + if (d->gestures.at(i)->gestureType() == type) + return d->gestures.at(i); return 0; } @@ -4251,7 +4263,12 @@ QGesture *QGestureEvent::gesture(Qt::GestureType type) const */ QList<QGesture *> QGestureEvent::activeGestures() const { - return gestures_; + QList<QGesture *> gestures; + foreach (QGesture *gesture, d_func()->gestures) { + if (gesture->state() != Qt::GestureCanceled) + gestures.append(gesture); + } + return gestures; } /*! @@ -4259,7 +4276,12 @@ QList<QGesture *> QGestureEvent::activeGestures() const */ QList<QGesture *> QGestureEvent::canceledGestures() const { - return gestures_; + QList<QGesture *> gestures; + foreach (QGesture *gesture, d_func()->gestures) { + if (gesture->state() == Qt::GestureCanceled) + gestures.append(gesture); + } + return gestures; } /*! @@ -4277,9 +4299,8 @@ QList<QGesture *> QGestureEvent::canceledGestures() const */ void QGestureEvent::setAccepted(QGesture *gesture, bool value) { - setAccepted(false); if (gesture) - gesture->d_func()->accept = value; + setAccepted(gesture->gestureType(), value); } /*! @@ -4293,7 +4314,8 @@ void QGestureEvent::setAccepted(QGesture *gesture, bool value) */ void QGestureEvent::accept(QGesture *gesture) { - setAccepted(gesture, true); + if (gesture) + setAccepted(gesture->gestureType(), true); } /*! @@ -4307,7 +4329,8 @@ void QGestureEvent::accept(QGesture *gesture) */ void QGestureEvent::ignore(QGesture *gesture) { - setAccepted(gesture, false); + if (gesture) + setAccepted(gesture->gestureType(), false); } /*! @@ -4315,7 +4338,123 @@ void QGestureEvent::ignore(QGesture *gesture) */ bool QGestureEvent::isAccepted(QGesture *gesture) const { - return gesture ? gesture->d_func()->accept : false; + return gesture ? isAccepted(gesture->gestureType()) : false; +} + +/*! + Sets the accept flag of the given \a gestureType object to the specified + \a value. + + Setting the accept flag indicates that the event receiver wants to receive + gestures of the specified type, \a gestureType. Unwanted gestures may be + propagated to the parent widget. + + By default, gestures in events of type QEvent::Gesture are accepted, and + gestures in QEvent::GestureOverride events are ignored. + + For convenience, the accept flag can also be set with + \l{QGestureEvent::accept()}{accept(gestureType)}, and cleared with + \l{QGestureEvent::ignore()}{ignore(gestureType)}. +*/ +void QGestureEvent::setAccepted(Qt::GestureType gestureType, bool value) +{ + setAccepted(false); + d_func()->accepted[gestureType] = value; +} + +/*! + Sets the accept flag of the given \a gestureType, the equivalent of calling + \l{QGestureEvent::setAccepted()}{setAccepted(gestureType, true)}. + + Setting the accept flag indicates that the event receiver wants the + gesture. Unwanted gestures may be propagated to the parent widget. + + \sa QGestureEvent::ignore() +*/ +void QGestureEvent::accept(Qt::GestureType gestureType) +{ + setAccepted(gestureType, true); +} + +/*! + Clears the accept flag parameter of the given \a gestureType, the equivalent + of calling \l{QGestureEvent::setAccepted()}{setAccepted(gesture, false)}. + + Clearing the accept flag indicates that the event receiver does not + want the gesture. Unwanted gestures may be propgated to the parent widget. + + \sa QGestureEvent::accept() +*/ +void QGestureEvent::ignore(Qt::GestureType gestureType) +{ + setAccepted(gestureType, false); +} + +/*! + Returns true if the gesture of type \a gestureType is accepted; otherwise + returns false. +*/ +bool QGestureEvent::isAccepted(Qt::GestureType gestureType) const +{ + return d_func()->accepted.value(gestureType, true); +} + +/*! + \internal + + Sets the widget for this event to the \a widget specified. +*/ +void QGestureEvent::setWidget(QWidget *widget) +{ + d_func()->widget = widget; +} + +/*! + Returns the widget on which the event occurred. +*/ +QWidget *QGestureEvent::widget() const +{ + return d_func()->widget; +} + +#ifndef QT_NO_GRAPHICSVIEW +/*! + Returns the scene-local coordinates if the \a gesturePoint is inside a + graphics view. + + This functional might be useful when the gesture event is delivered to a + QGraphicsObject to translate a point in screen coordinates to scene-local + coordinates. + + \sa QPointF::isNull(). +*/ +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_NO_GRAPHICSVIEW + +/*! + \internal +*/ +QGestureEventPrivate *QGestureEvent::d_func() +{ + return reinterpret_cast<QGestureEventPrivate *>(d); +} + +/*! + \internal +*/ +const QGestureEventPrivate *QGestureEvent::d_func() const +{ + return reinterpret_cast<const QGestureEventPrivate *>(d); } #ifdef Q_NO_USING_KEYWORD |