QGestureRecognizer::Result
QTapAndHoldGestureRecognizer::recognize(QGesture *state, QObject *object,
QEvent *event)
{
QTapAndHoldGesture *q = static_cast<QTapAndHoldGesture *>(state);
QTapAndHoldGesturePrivate *d = q->d_func();
if (object == state && event->type() == QEvent::Timer) {
q->killTimer(d->timerId);
d->timerId = 0;
return QGestureRecognizer::Ignore | QGestureRecognizer::ConsumeEventHint;
}
const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);
QGestureRecognizer::Result result = QGestureRecognizer::CancelGesture;
enum { TimerInterval = 2000 };
enum { TapRadius = 40 };
switch (event->type()) {
case QEvent::TouchBegin:
d->position = ev->touchPoints().at(0).pos();
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = q->startTimer(TimerInterval);
result = QGestureRecognizer::TriggerGesture;
break;
case QEvent::TouchEnd:
if (d->timerId)
result = QGestureRecognizer::CancelGesture;
else
result = QGestureRecognizer::FinishGesture;
break;
case QEvent::TouchUpdate:
if (q->state() != Qt::NoGesture && ev->touchPoints().size() == 1) {
QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
QPoint delta = p.pos().toPoint() - p.startPos().toPoint();
if (delta.manhattanLength() <= TapRadius)
result = QGestureRecognizer::TriggerGesture;
}
break;
case QEvent::MouseButtonPress:
case QEvent::MouseMove:
case QEvent::MouseButtonRelease:
result = QGestureRecognizer::Ignore;
break;
default:
result = QGestureRecognizer::Ignore;
break;
}
return result;
}
void QTapAndHoldGestureRecognizer::reset(QGesture *state)
{
QTapAndHoldGesture *q = static_cast<QTapAndHoldGesture *>(state);
QTapAndHoldGesturePrivate *d = q->d_func();
d->position = QPointF();
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = 0;
QGestureRecognizer::reset(state);
}
QGestureRecognizer::Result
QTapAndHoldGestureRecognizer::recognize(QGesture *state, QObject *object,
QEvent *event)
{
#ifndef QT_WEBOS
QTapAndHoldGesture *q = static_cast<QTapAndHoldGesture *>(state);
QTapAndHoldGesturePrivate *d = q->d_func();
if (object == state && event->type() == QEvent::Timer) {
q->killTimer(d->timerId);
d->timerId = 0;
return QGestureRecognizer::FinishGesture | QGestureRecognizer::ConsumeEventHint;
}
const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);
const QMouseEvent *me = static_cast<const QMouseEvent *>(event);
#ifndef QT_NO_GRAPHICSVIEW
const QGraphicsSceneMouseEvent *gsme = static_cast<const QGraphicsSceneMouseEvent *>(event);
#endif
enum { TapRadius = 40 };
switch (event->type()) {
#ifndef QT_NO_GRAPHICSVIEW
case QEvent::GraphicsSceneMousePress:
d->position = gsme->screenPos();
q->setHotSpot(d->position);
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = q->startTimer(QTapAndHoldGesturePrivate::Timeout);
return QGestureRecognizer::MayBeGesture; // we don't show a sign of life until the timeout
#endif
case QEvent::MouseButtonPress:
d->position = me->globalPos();
q->setHotSpot(d->position);
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = q->startTimer(QTapAndHoldGesturePrivate::Timeout);
return QGestureRecognizer::MayBeGesture; // we don't show a sign of life until the timeout
case QEvent::TouchBegin:
d->position = ev->touchPoints().at(0).startScreenPos();
q->setHotSpot(d->position);
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = q->startTimer(QTapAndHoldGesturePrivate::Timeout);
return QGestureRecognizer::MayBeGesture; // we don't show a sign of life until the timeout
#ifndef QT_NO_GRAPHICSVIEW
case QEvent::GraphicsSceneMouseRelease:
#endif
case QEvent::MouseButtonRelease:
case QEvent::TouchEnd:
return QGestureRecognizer::CancelGesture; // get out of the MayBeGesture state
case QEvent::TouchUpdate:
if (d->timerId && ev->touchPoints().size() == 1) {
QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
QPoint delta = p.pos().toPoint() - p.startPos().toPoint();
if (delta.manhattanLength() <= TapRadius)
return QGestureRecognizer::MayBeGesture;
}
return QGestureRecognizer::CancelGesture;
case QEvent::MouseMove: {
QPoint delta = me->globalPos() - d->position.toPoint();
if (d->timerId && delta.manhattanLength() <= TapRadius)
return QGestureRecognizer::MayBeGesture;
return QGestureRecognizer::CancelGesture;
}
#ifndef QT_NO_GRAPHICSVIEW
case QEvent::GraphicsSceneMouseMove: {
QPoint delta = gsme->screenPos() - d->position.toPoint();
if (d->timerId && delta.manhattanLength() <= TapRadius)
return QGestureRecognizer::MayBeGesture;
return QGestureRecognizer::CancelGesture;
}
#endif
default:
return QGestureRecognizer::Ignore;
}
#else
QGestureRecognizer::Result result = QGestureRecognizer::CancelGesture;
QTapAndHoldGesture *q = static_cast<QTapAndHoldGesture *>(state);
QTapAndHoldGesturePrivate *d = q->d_func();
if (object == state && event->type() == QEvent::Timer) {
q->killTimer(d->timerId);
d->timerId = 0;
if (q->state() != Qt::NoGesture && q->state() != Qt::GestureCanceled) {
result = QGestureRecognizer::FinishGesture;
}
return result | QGestureRecognizer::ConsumeEventHint;
}
const QTouchEvent *ev = static_cast<const QTouchEvent *>(event);
enum { TimerInterval = 700 };
enum { TapRadius = 40 };
switch (event->type()) {
case QEvent::TouchBegin:
d->position = ev->touchPoints().at(0).startScreenPos();
q->setHotSpot(d->position);
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = q->startTimer(TimerInterval);
return QGestureRecognizer::TriggerGesture;
case QEvent::TouchEnd:
result = QGestureRecognizer::CancelGesture;
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = 0;
break;
case QEvent::TouchUpdate:
if (d->timerId && ev->touchPoints().size() == 1) {
QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
QPoint delta = p.pos().toPoint() - p.startPos().toPoint();
if (delta.manhattanLength() > TapRadius) {
result = QGestureRecognizer::CancelGesture;
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = 0;
} else {
result = QGestureRecognizer::Ignore;
}
} else if (ev->touchPoints().size() > 1) {
result = QGestureRecognizer::CancelGesture;
if (d->timerId)
q->killTimer(d->timerId);
d->timerId = 0;
} else {
result = QGestureRecognizer::Ignore;
}
break;
default:
return QGestureRecognizer::Ignore;
}
return result;
#endif // QT_WEBOS
}