/*
 Copyright © 2017 Hasan Yavuz Özderya

 This file is part of serialplot.

 serialplot is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 serialplot is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with serialplot. If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef PLOT_H
#define PLOT_H

#include <QColor>
#include <QList>
#include <QAction>
#include <qwt_plot.h>
#include <qwt_plot_grid.h>
#include <qwt_plot_shapeitem.h>
#include <qwt_plot_legenditem.h>
#include <qwt_plot_textlabel.h>

#include "zoomer.h"
#include "scalezoomer.h"
#include "plotsnapshotoverlay.h"

class Plot : public QwtPlot
{
 Q_OBJECT

 friend class PlotManager;

public:
 enum ShowSymbols
 {
 ShowSymbolsAuto,
 ShowSymbolsShow,
 ShowSymbolsHide
 };

 Plot(QWidget* parent = 0);
 ~Plot();

public slots:
 void showGrid(bool show = true);
 void showMinorGrid(bool show = true);
 void showLegend(bool show = true);
 void showDemoIndicator(bool show = true);
 void showNoChannel(bool show = true);
 void unzoom();
 void darkBackground(bool enabled = true);
 void setYAxis(bool autoScaled, double yMin = 0, double yMax = 1);
 void setXAxis(double xMin, double xMax);
 void setSymbols(ShowSymbols shown);

 /**
 * Displays an animation for snapshot.
 *
 * @param light show a light colored (white) animation or the opposite
 */
 void flashSnapshotOverlay(bool light);

 void setNumOfSamples(unsigned value);

 void setPlotWidth(double width);

protected:
 /// update the display of symbols depending on `symbolSize`
 void updateSymbols();

private:
 bool isAutoScaled;
 double yMin, yMax;
 double _xMin, _xMax;
 unsigned numOfSamples;
 double plotWidth;
 int symbolSize;
 Zoomer zoomer;
 ScaleZoomer sZoomer;
 QwtPlotGrid grid;
 PlotSnapshotOverlay* snapshotOverlay;
 QwtPlotLegendItem legend;
 QwtPlotTextLabel demoIndicator;
 QwtPlotTextLabel noChannelIndicator;
 ShowSymbols showSymbols;

 void resetAxes();
 void resizeEvent(QResizeEvent * event);
 void calcSymbolSize();

private slots:
 void unzoomed();
 void onXScaleChanged();
};

#endif // PLOT_H