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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Labs Templates module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qquickpressandholdhelper_p.h"
#include <QtCore/private/qobject_p.h>
#include <QtGui/qguiapplication.h>
#include <QtGui/qstylehints.h>
#include <QtQuick/qquickitem.h>
#include <QtQuick/private/qquickevents_p_p.h>
QT_BEGIN_NAMESPACE
QQuickPressAndHoldHelper::QQuickPressAndHoldHelper()
: control(Q_NULLPTR)
, longPress(false)
, pressAndHoldSignalIndex(-1)
, delayedMousePressEvent(Q_NULLPTR)
{ }
void QQuickPressAndHoldHelper::mousePressEvent(QMouseEvent *event)
{
longPress = false;
pressPos = event->localPos();
if (Qt::LeftButton == (event->buttons() & Qt::LeftButton)) {
timer.start(QGuiApplication::styleHints()->mousePressAndHoldInterval(), control);
delayedMousePressEvent = new QMouseEvent(event->type(), event->pos(), event->button(), event->buttons(), event->modifiers());
} else {
timer.stop();
}
}
void QQuickPressAndHoldHelper::mouseMoveEvent(QMouseEvent *event)
{
if (qAbs(int(event->localPos().x() - pressPos.x())) > QGuiApplication::styleHints()->startDragDistance())
timer.stop();
}
void QQuickPressAndHoldHelper::mouseReleaseEvent(QMouseEvent *)
{
if (!longPress)
timer.stop();
}
void QQuickPressAndHoldHelper::timerEvent(QTimerEvent *)
{
timer.stop();
clearDelayedMouseEvent();
if (pressAndHoldSignalIndex == -1)
pressAndHoldSignalIndex = control->metaObject()->indexOfSignal("pressAndHold(QQuickMouseEvent*)");
Q_ASSERT(pressAndHoldSignalIndex != -1);
longPress = QObjectPrivate::get(control)->isSignalConnected(pressAndHoldSignalIndex);
if (longPress) {
QQuickMouseEvent mev(pressPos.x(), pressPos.y(), Qt::LeftButton, Qt::LeftButton,
QGuiApplication::keyboardModifiers(), false/*isClick*/, true/*wasHeld*/);
mev.setAccepted(true);
// Use fast signal invocation since we already got its index
QQuickMouseEvent *mevPtr = &mev;
void *args[] = { Q_NULLPTR, &mevPtr };
QMetaObject::metacall(control, QMetaObject::InvokeMetaMethod, pressAndHoldSignalIndex, args);
if (!mev.isAccepted())
longPress = false;
}
}
void QQuickPressAndHoldHelper::clearDelayedMouseEvent()
{
if (delayedMousePressEvent) {
delete delayedMousePressEvent;
delayedMousePressEvent = 0;
}
}
bool QQuickPressAndHoldHelper::isActive()
{
return !(timer.isActive() || longPress);
}
QT_END_NAMESPACE
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