/*
 * Copyright (c) 2015, RPTU Kaiserslautern-Landau
 * 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 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors:
 *    Janik Schlemminger
 *    Robert Gernhardt
 *    Matthias Jung
 */

#ifndef TRACEPLOTPICKER_H
#define TRACEPLOTPICKER_H

#include "traceplot.h"
#include <qwt_plot_picker.h>

enum class MouseLabelMode
{
    AbsoluteTime,
    Timedifference
};

class TracePlotMouseLabel : public QwtPlotPicker
{
public:
    TracePlotMouseLabel(TracePlot* traceplot,
                        unsigned int clkPeriod,
                        Timespan& timeDifferenceSpan) :
        QwtPlotPicker(QwtPlot::xBottom,
                      QwtPlot::yLeft,
                      QwtPlotPicker::VLineRubberBand,
                      QwtPicker::AlwaysOn,
                      traceplot->canvas()),
        mode(MouseLabelMode::AbsoluteTime),
        traceplot(traceplot),
        clkPeriod(clkPeriod),
        timeDifferenceSpan(timeDifferenceSpan)
    {
    }

    void setMode(MouseLabelMode mode);

protected:
    virtual QwtText trackerText(const QPoint& point) const;

private:
    MouseLabelMode mode;
    TracePlot* traceplot;
    unsigned int clkPeriod;
    Timespan& timeDifferenceSpan;
};

#endif // TRACEPLOTPICKER_H