--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ginebra2/KineticHelper.h Tue May 04 12:39:35 2010 +0300
@@ -0,0 +1,73 @@
+/*
+* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+
+#ifndef __KINETIC_HELPER_H__
+#define __KINETIC_HELPER_H__
+
+#include <QObject>
+#include <QPoint>
+#include <QTime>
+
+class QTimer;
+
+#define KINETIC_TIMEOUT 60
+#define DECELERATION 100
+
+
+class KineticScrollable
+{
+public:
+ virtual void scrollTo(QPoint& pos) = 0;
+
+ virtual QPoint getScrollPosition() = 0;
+
+ virtual QPoint getInitialPosition() = 0;
+
+ virtual QPointF getInitialSpeed() = 0;
+};
+
+
+
+class KineticHelper: public QObject
+{
+ Q_OBJECT
+
+public:
+ KineticHelper(KineticScrollable* scrollable, qreal decel = DECELERATION, int kineticTimeout = KINETIC_TIMEOUT);
+ ~KineticHelper();
+
+ void setDeceleration(qreal decel) { m_decel = decel; }
+ void setKineticTimeout(int timeout) { m_kineticTimeout = timeout; }
+ void stopScrolling();
+ void startScrolling();
+ bool isScrolling();
+private slots:
+ void kineticScroll();
+private:
+ KineticScrollable* m_scrollable;
+ QPointF m_initialSpeed;
+ QPoint m_initialPos;
+ QTimer* m_kineticTimer;
+ int m_kineticSteps;
+ qreal m_decel;
+ int m_kineticTimeout;
+ QTime m_actualTime;
+ qreal m_kineticScrollTime;
+};
+
+#endif //__KINETIC_HELPER_H__