cxPlaybackTime.h

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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modification, are permitted provided that the following conditions are met:

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   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, 
   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
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=========================================================================*/

#ifndef CXPLAYBACKTIME_H_
#define CXPLAYBACKTIME_H_

#include "cxResourceExport.h"

#include <QObject>
#include <QDateTime>
#include <QColor>
#include <QTimer>
#include <boost/shared_ptr.hpp>

namespace cx
{

class cxResource_EXPORT PlaybackTime : public QObject
{
        Q_OBJECT
public:
        PlaybackTime();
        virtual ~PlaybackTime();

        void initialize(QDateTime start, qint64 length);

        void forward(qint64 msecs); 
        void rewind(qint64 msecs); 
        bool isPlaying() const;

        void setTime(QDateTime time);
        QDateTime getTime() const;
        void setOffset(qint64 val); 
        void moveOffset(qint64 delta); 
        qint64 getOffset() const;
        qint64 getLength() const; 
        QDateTime getStartTime() const;
        void setSpeed(double val); 
        double getSpeed() const;
        void setResolution(qint64 val); 
        double getResolution();

public slots:
        void start(); 
        void stop(); 
        void pause(); 

signals:
        void changed();
private slots:
        void timeoutSlot();

private:
        QDateTime mStartTime;
//      QDateTime mTime;
        qint64 mOffset; 
        qint64 mLength;
        QTimer* mTimer;
        double mSpeed;

        QDateTime mPlayStart; 
        qint64 mLastPlayOffset; 

};

typedef boost::shared_ptr<PlaybackTime> PlaybackTimePtr;

class cxResource_EXPORT TimelineEvent
{
public:
        TimelineEvent() : mStartTime(0), mEndTime(0), mColor("black") {}
        TimelineEvent(QString description, double start, double end) : mDescription(description), mStartTime(start), mEndTime(end) {}
        TimelineEvent(QString description, double time) : mDescription(description), mStartTime(time), mEndTime(time) {}
        QString mUid;
        QString mDescription;
        double mStartTime;
        double mEndTime;
        QColor mColor;
        QString mGroup;
        bool isInside(double time, double tol_ms=0) const;
        bool isSingular() const;
        bool isOverlap(const TimelineEvent& rhs) const;
        bool operator<(const TimelineEvent& rhs) const;
};


} /* namespace cx */
#endif /* CXPLAYBACKTIME_H_ */