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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "gestures.h"
#include <QTouchEvent>
Qt::GestureType ThreeFingerSlideGesture::Type = Qt::CustomGesture;
QGesture *ThreeFingerSlideGestureRecognizer::create(QObject *)
{
return new ThreeFingerSlideGesture;
}
QGestureRecognizer::Result ThreeFingerSlideGestureRecognizer::recognize(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::FinishGesture;
else
result = QGestureRecognizer::CancelGesture;
case QEvent::TouchUpdate:
if (d->state() != Qt::NoGesture) {
QTouchEvent *ev = static_cast<QTouchEvent*>(event);
if (ev->touchPoints().size() == 3) {
d->gestureFired = true;
result = QGestureRecognizer::TriggerGesture;
} 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::CancelGesture;
}
}
}
} else {
result = QGestureRecognizer::CancelGesture;
}
break;
case QEvent::MouseButtonPress:
case QEvent::MouseButtonRelease:
case QEvent::MouseMove:
if (d->state() != Qt::NoGesture)
result = QGestureRecognizer::Ignore;
else
result = QGestureRecognizer::CancelGesture;
break;
default:
result = QGestureRecognizer::Ignore;
break;
}
return result;
}
void ThreeFingerSlideGestureRecognizer::reset(QGesture *state)
{
static_cast<ThreeFingerSlideGesture *>(state)->gestureFired = false;
QGestureRecognizer::reset(state);
}
QGesture *RotateGestureRecognizer::create(QObject *)
{
return new QGesture;
}
QGestureRecognizer::Result RotateGestureRecognizer::recognize(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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