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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
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** | |
** GNU General Public License Usage | |
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#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 |