1 files changed, 100 insertions, 0 deletions
diff --git a/animals/pangesturerecognizer.cpp b/animals/pangesturerecognizer.cpp
new file mode 100644
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--- /dev/null
+++ b/animals/pangesturerecognizer.cpp
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications 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 "pangesturerecognizer.h"
+
+void PanGestureRecognizer::registerRecognizer()
+{
+    QGestureRecognizer::registerRecognizer(new PanGestureRecognizer);
+}
+
+PanGestureRecognizer::PanGestureRecognizer()
+{
+}
+
+QGesture *PanGestureRecognizer::create(QObject *)
+{
+    return new QPanGesture;
+}
+
+QGestureRecognizer::Result PanGestureRecognizer::recognize(QGesture *state, QObject *,
+                                                           QEvent *event)
+{
+    QPanGesture *q = static_cast<QPanGesture *>(state);
+    QGraphicsSceneMouseEvent *ev = static_cast<QGraphicsSceneMouseEvent *>(event);
+    switch(event->type()) {
+    case QEvent::GraphicsSceneMousePress:
+        if (ev->buttons() == Qt::LeftButton && !(ev->modifiers() & Qt::ControlModifier)) {
+            state->setProperty("startPos", ev->screenPos());
+            state->setHotSpot(ev->screenPos());
+            state->setHandled(false);
+            ev->accept();
+            return QGestureRecognizer::MayBeGesture | QGestureRecognizer::ConsumeEventHint;
+        } else if (state->state() == Qt::GestureUpdated) {
+            return QGestureRecognizer::CancelGesture;
+        } else
+            return QGestureRecognizer::Ignore;
+    case QEvent::GraphicsSceneMouseMove:
+        if (!state->property("startPos").toPoint().isNull()) {
+            QPoint delta = ev->screenPos() - state->property("startPos").toPoint();
+            q->setLastOffset(q->offset());
+            q->setOffset(delta);
+            return QGestureRecognizer::TriggerGesture;
+        }
+        return QGestureRecognizer::Ignore;
+    case QEvent::GraphicsSceneMouseRelease:
+        if (!state->property("startPos").toPoint().isNull()) {
+            state->setProperty("startPos", QPoint());
+            return QGestureRecognizer::FinishGesture;
+        }
+        return QGestureRecognizer::Ignore;
+    default:
+        break;
+    }
+    return QGestureRecognizer::Ignore;
+}
+
+void PanGestureRecognizer::reset(QGesture *state)
+{
+    QPanGesture *q = static_cast<QPanGesture *>(state);
+    q->setLastOffset(QPointF());
+    q->setOffset(QPointF());
+    q->setAcceleration(0);
+}