PlotTracker.hh

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/*
 * Copyright (C) 2016 Open Source Robotics Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/

#ifndef GAZEBO_GUI_PLOT_PLOTTRACKER_HH_
#define GAZEBO_GUI_PLOT_PLOTTRACKER_HH_

#include <memory>

#include "gazebo/gui/plot/qwt_gazebo.h"

namespace gazebo
{
  namespace gui
  {
    class PlotTrackerPrivate;

    class PlotTracker: public QwtPlotPicker
    {
#if (QWT_VERSION < ((6 << 16) | (1 << 8) | 0))
      public: PlotTracker(QwtPlotCanvas *_canvas);
#else
      public: PlotTracker(QWidget *_canvas);
#endif

      public: void Update();

      protected: virtual void updateDisplay();

      protected: virtual QwtText trackerTextF(const QPointF &_pos) const;

      protected: virtual void widgetMousePressEvent(QMouseEvent *_e);

      protected: virtual void widgetMouseReleaseEvent(QMouseEvent *_e);

      private: QString CurveInfoAt(const QwtPlotCurve *_curve,
                                   const QPointF &_pos) const;

      private: QLineF CurveLineAt(const QwtPlotCurve *_curve,
                                  const double _x) const;

      private: int UpperSampleIndex(const QwtSeriesData<QPointF> &_series,
                                    const double _value) const;

      private: std::unique_ptr<PlotTrackerPrivate> dataPtr;
    };
  }
}

#endif