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#include "gestures.h"
#include <QTouchEvent>
Qt::GestureType ThreeFingerSlideGesture::Type = Qt::CustomGesture;
QGesture *ThreeFingerSlideGestureRecognizer::createGesture(QObject *)
{
return new ThreeFingerSlideGesture;
}
QGestureRecognizer::Result ThreeFingerSlideGestureRecognizer::filterEvent(QGesture *state, QObject *, QEvent *event)
{
ThreeFingerSlideGesture *d = static_cast<ThreeFingerSlideGesture *>(state);
QGestureRecognizer::Result result;
switch (event->type()) {
case QEvent::TouchBegin:
result = QGestureRecognizer::MaybeGesture;
case QEvent::TouchEnd:
if (d->gestureFired)
result = QGestureRecognizer::GestureFinished;
else
result = QGestureRecognizer::NotGesture;
case QEvent::TouchUpdate:
if (d->state() != Qt::NoGesture) {
QTouchEvent *ev = static_cast<QTouchEvent*>(event);
if (ev->touchPoints().size() == 3) {
d->gestureFired = true;
result = QGestureRecognizer::GestureTriggered;
} else {
result = QGestureRecognizer::MaybeGesture;
for (int i = 0; i < ev->touchPoints().size(); ++i) {
const QTouchEvent::TouchPoint &pt = ev->touchPoints().at(i);
const int distance = (pt.pos().toPoint() - pt.startPos().toPoint()).manhattanLength();
if (distance > 20) {
result = QGestureRecognizer::NotGesture;
}
}
}
} else {
result = QGestureRecognizer::NotGesture;
}
break;
case QEvent::MouseButtonPress:
case QEvent::MouseButtonRelease:
case QEvent::MouseMove:
if (d->state() != Qt::NoGesture)
result = QGestureRecognizer::Ignore;
else
result = QGestureRecognizer::NotGesture;
break;
default:
result = QGestureRecognizer::Ignore;
break;
}
return result;
}
void ThreeFingerSlideGestureRecognizer::reset(QGesture *state)
{
static_cast<ThreeFingerSlideGesture *>(state)->gestureFired = false;
QGestureRecognizer::reset(state);
}
QGesture *RotateGestureRecognizer::createGesture(QObject *)
{
return new QGesture;
}
QGestureRecognizer::Result RotateGestureRecognizer::filterEvent(QGesture *, QObject *, QEvent *event)
{
switch (event->type()) {
case QEvent::TouchBegin:
case QEvent::TouchEnd:
case QEvent::TouchUpdate:
break;
default:
break;
}
return QGestureRecognizer::Ignore;
}
void RotateGestureRecognizer::reset(QGesture *state)
{
QGestureRecognizer::reset(state);
}
#include "moc_gestures.cpp"
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