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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "mousepangesturerecognizer.h"
#include <QEvent>
#include <QMouseEvent>
#include <QGesture>
MousePanGestureRecognizer::MousePanGestureRecognizer()
{
}
QGesture *MousePanGestureRecognizer::create(QObject *)
{
return new QPanGesture;
}
QGestureRecognizer::Result MousePanGestureRecognizer::recognize(QGesture *state, QObject *, QEvent *event)
{
QPanGesture *g = static_cast<QPanGesture *>(state);
if (event->type() == QEvent::TouchBegin) {
// ignore the following mousepress event
g->setProperty("ignoreMousePress", QVariant::fromValue<bool>(true));
} else if (event->type() == QEvent::TouchEnd) {
g->setProperty("ignoreMousePress", QVariant::fromValue<bool>(false));
}
QMouseEvent *me = static_cast<QMouseEvent *>(event);
if (event->type() == QEvent::MouseButtonPress) {
if (g->property("ignoreMousePress").toBool())
return QGestureRecognizer::Ignore;
g->setHotSpot(me->globalPos());
g->setProperty("startPos", me->globalPos());
g->setProperty("pressed", QVariant::fromValue<bool>(true));
return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint;
} else if (event->type() == QEvent::MouseMove) {
if (g->property("pressed").toBool()) {
QPoint offset = me->globalPos() - g->property("startPos").toPoint();
g->setLastOffset(g->offset());
g->setOffset(QPointF(offset.x(), offset.y()));
return QGestureRecognizer::TriggerGesture | QGestureRecognizer::ConsumeEventHint;
}
return QGestureRecognizer::CancelGesture;
} else if (event->type() == QEvent::MouseButtonRelease) {
if (g->property("pressed").toBool())
return QGestureRecognizer::FinishGesture | QGestureRecognizer::ConsumeEventHint;
}
return QGestureRecognizer::Ignore;
}
void MousePanGestureRecognizer::reset(QGesture *state)
{
QPanGesture *g = static_cast<QPanGesture *>(state);
g->setLastOffset(QPointF());
g->setOffset(QPointF());
g->setAcceleration(0);
g->setProperty("startPos", QVariant());
g->setProperty("pressed", QVariant::fromValue<bool>(false));
g->setProperty("ignoreMousePress", QVariant::fromValue<bool>(false));
QGestureRecognizer::reset(state);
}
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