diff options
Diffstat (limited to 'src/gui/kernel/qwinnativepangesturerecognizer_win.cpp')
-rw-r--r-- | src/gui/kernel/qwinnativepangesturerecognizer_win.cpp | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/gui/kernel/qwinnativepangesturerecognizer_win.cpp b/src/gui/kernel/qwinnativepangesturerecognizer_win.cpp new file mode 100644 index 0000000000..0d13bafc0c --- /dev/null +++ b/src/gui/kernel/qwinnativepangesturerecognizer_win.cpp @@ -0,0 +1,133 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "private/qwinnativepangesturerecognizer_win_p.h" + +#include "qevent.h" +#include "qgraphicsitem.h" +#include "qgesture.h" + +#include "private/qgesture_p.h" +#include "private/qevent_p.h" +#include "private/qapplication_p.h" +#include "private/qwidget_p.h" + +#ifndef QT_NO_GESTURES + +QT_BEGIN_NAMESPACE + +#if !defined(QT_NO_NATIVE_GESTURES) + +QWinNativePanGestureRecognizer::QWinNativePanGestureRecognizer() +{ +} + +QGesture *QWinNativePanGestureRecognizer::create(QObject *target) +{ + if (!target) + return new QPanGesture; // a special case + if (!target->isWidgetType()) + return 0; + if (qobject_cast<QGraphicsObject *>(target)) + return 0; + + QWidget *q = static_cast<QWidget *>(target); + QWidgetPrivate *d = q->d_func(); + d->nativeGesturePanEnabled = true; + d->winSetupGestures(); + + return new QPanGesture; +} + +QGestureRecognizer::Result QWinNativePanGestureRecognizer::recognize(QGesture *state, + QObject *, + QEvent *event) +{ + QPanGesture *q = static_cast<QPanGesture*>(state); + QPanGesturePrivate *d = q->d_func(); + + QGestureRecognizer::Result result = QGestureRecognizer::Ignore; + if (event->type() == QEvent::NativeGesture) { + QNativeGestureEvent *ev = static_cast<QNativeGestureEvent*>(event); + switch(ev->gestureType) { + case QNativeGestureEvent::GestureBegin: + break; + case QNativeGestureEvent::Pan: + result = QGestureRecognizer::TriggerGesture; + event->accept(); + break; + case QNativeGestureEvent::GestureEnd: + if (q->state() == Qt::NoGesture) + return QGestureRecognizer::Ignore; // some other gesture has ended + result = QGestureRecognizer::FinishGesture; + break; + default: + return QGestureRecognizer::Ignore; + } + if (q->state() == Qt::NoGesture) { + d->lastOffset = d->offset = QPointF(); + d->startPosition = ev->position; + } else { + d->lastOffset = d->offset; + d->offset = QPointF(ev->position.x() - d->startPosition.x(), + ev->position.y() - d->startPosition.y()); + } + } + return result; +} + +void QWinNativePanGestureRecognizer::reset(QGesture *state) +{ + QPanGesture *pan = static_cast<QPanGesture*>(state); + QPanGesturePrivate *d = pan->d_func(); + + d->lastOffset = d->offset = QPointF(); + d->startPosition = QPoint(); + d->acceleration = 0; + + QGestureRecognizer::reset(state); +} + +#endif // QT_NO_NATIVE_GESTURES + +QT_END_NAMESPACE + +#endif // QT_NO_GESTURES |