cxTimelineWidget.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.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, 
   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 CXTIMELINEWIDGET_H_
#define CXTIMELINEWIDGET_H_

#include "cxResourceWidgetsExport.h"

#include <QWidget>

#include "vtkForwardDeclarations.h"
#include "cxForwardDeclarations.h"
#include "cxVector3D.h"
#include "cxPlaybackTime.h"


namespace cx
{

class cxResourceWidgets_EXPORT TimelineWidget : public QWidget
{
Q_OBJECT

public:
        TimelineWidget(QWidget* parent);
        virtual ~TimelineWidget();


        void setEvents(std::vector<TimelineEvent> events);
//      void setRegions(std::vector<std::pair<double, double> > validRegions);
        void setRange(double start, double stop);
        void setPos(double pos);
        double getPos() const;

signals:
        void positionChanged();

protected slots:

protected:
        virtual bool event(QEvent *event);
        virtual void mousePressEvent(QMouseEvent* event);
        virtual void mouseReleaseEvent(QMouseEvent* event);
        virtual void mouseMoveEvent(QMouseEvent* event);
        virtual void resizeEvent(QResizeEvent* evt); 
        virtual void paintEvent(QPaintEvent* event); 
        virtual QSize sizeHint() const;
        QSize minimumSizeHint() const;

private:
        int mapTime2PlotX(double time) const;
        double mapPlotX2Time(int plotX) const;
        bool showHelp(QPoint pos);

        void setPositionFromScreenPos(int x, int y);
        void createCompactingTransforms();
        double findCompactedTime(double timeInterval, double totalUsedTime, double totalTime) const;

//      std::vector<std::pair<double, double> > mValidRegions;
        std::vector<TimelineEvent> mEvents;
        int mBorder;
        double mStart, mStop, mPos;
        QRect mFullArea; 
        QRect mPlotArea; 
        bool mCloseToGlyph; 
        int mTolerance_p; 
        QStringList mContinousEvents; //< list of all continous events, used for stacked display
        std::vector<TimelineEvent> mNoncompactedIntervals; 
//      std::vector<QColor> mEventColors; ///< use to color continous events

        vtkPiecewiseFunctionPtr mBackward;
        vtkPiecewiseFunctionPtr mForward;

};

} /* namespace cx */

#endif /* CXTIMELINEWIDGET_H_ */