2012-02-18 08:19:50 +04:00
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/****************************************************************************
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**
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2012-06-17 13:21:54 +04:00
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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2012-02-18 08:19:50 +04:00
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "private/qwinnativepangesturerecognizer_win_p.h"
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#include "qevent.h"
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#include "qgraphicsitem.h"
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#include "qgesture.h"
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#include "private/qgesture_p.h"
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#include "private/qevent_p.h"
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#include "private/qapplication_p.h"
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#include "private/qwidget_p.h"
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#ifndef QT_NO_GESTURES
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QT_BEGIN_NAMESPACE
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#if !defined(QT_NO_NATIVE_GESTURES)
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QWinNativePanGestureRecognizer::QWinNativePanGestureRecognizer()
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{
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}
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QGesture *QWinNativePanGestureRecognizer::create(QObject *target)
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{
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if (!target)
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return new QPanGesture; // a special case
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if (!target->isWidgetType())
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return 0;
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2012-07-28 07:58:15 +04:00
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#ifndef QT_NO_GRAPHICSVIEW
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2012-02-18 08:19:50 +04:00
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if (qobject_cast<QGraphicsObject *>(target))
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return 0;
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2012-07-28 07:58:15 +04:00
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#endif // QT_NO_GRAPHICSVIEW
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2012-02-18 08:19:50 +04:00
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QWidget *q = static_cast<QWidget *>(target);
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QWidgetPrivate *d = q->d_func();
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d->nativeGesturePanEnabled = true;
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d->winSetupGestures();
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return new QPanGesture;
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}
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QGestureRecognizer::Result QWinNativePanGestureRecognizer::recognize(QGesture *state,
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QObject *,
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QEvent *event)
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{
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QPanGesture *q = static_cast<QPanGesture*>(state);
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QPanGesturePrivate *d = q->d_func();
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QGestureRecognizer::Result result = QGestureRecognizer::Ignore;
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if (event->type() == QEvent::NativeGesture) {
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QNativeGestureEvent *ev = static_cast<QNativeGestureEvent*>(event);
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switch(ev->gestureType) {
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case QNativeGestureEvent::GestureBegin:
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break;
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case QNativeGestureEvent::Pan:
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result = QGestureRecognizer::TriggerGesture;
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event->accept();
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break;
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case QNativeGestureEvent::GestureEnd:
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if (q->state() == Qt::NoGesture)
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return QGestureRecognizer::Ignore; // some other gesture has ended
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result = QGestureRecognizer::FinishGesture;
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break;
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default:
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return QGestureRecognizer::Ignore;
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}
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if (q->state() == Qt::NoGesture) {
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d->lastOffset = d->offset = QPointF();
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d->startPosition = ev->position;
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} else {
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d->lastOffset = d->offset;
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d->offset = QPointF(ev->position.x() - d->startPosition.x(),
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ev->position.y() - d->startPosition.y());
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}
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}
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return result;
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}
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void QWinNativePanGestureRecognizer::reset(QGesture *state)
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{
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QPanGesture *pan = static_cast<QPanGesture*>(state);
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QPanGesturePrivate *d = pan->d_func();
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d->lastOffset = d->offset = QPointF();
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d->startPosition = QPoint();
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d->acceleration = 0;
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QGestureRecognizer::reset(state);
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}
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#endif // QT_NO_NATIVE_GESTURES
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QT_END_NAMESPACE
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#endif // QT_NO_GESTURES
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