/*

  Copyright © 2015 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/>.

*/

#include <QRectF>

#include <QKeySequence>

#include "plot.h"

#include "utils.h"

Plot::Plot(QWidget* parent) :

    QwtPlot(parent),

    zoomer(this->canvas(), false),

    sZoomer(this, &zoomer),

    _showGridAction("Grid", this),

    _showMinorGridAction("Minor Grid", this),

    _unzoomAction("Unzoom", this),

    _darkBackgroundAction("Dark Background", this)

{

    isAutoScaled = true;

    QObject::connect(&zoomer, &Zoomer::unzoomed, this, &Plot::unzoomed);

    zoomer.setZoomBase();

    grid.attach(this);

    showGrid(false);

    darkBackground(false);

    _showGridAction.setToolTip("Show Grid");

    resetAxes();

}

void Plot::showGrid(bool show)

{

    grid.enableX(show);

    grid.enableY(show);

    replot();

}

void Plot::showMinorGrid(bool show)

{

    grid.enableXMin(show);

    grid.enableYMin(show);

    replot();

}

void Plot::unzoom()

{

    zoomer.zoom(0);

}

void Plot::darkBackground(bool enabled)

{

    if (enabled)

    {

        setCanvasBackground(QBrush(Qt::black));

        zoomer.setRubberBandPen(QPen(Qt::white));

        zoomer.setTrackerPen(QPen(Qt::white));

        sZoomer.setPickerPen(QPen(Qt::white));

    }

    else

    {

        setCanvasBackground(QBrush(Qt::white));

        zoomer.setRubberBandPen(QPen(Qt::black));

        zoomer.setTrackerPen(QPen(Qt::black));

        sZoomer.setPickerPen(QPen(Qt::black));

    }

    replot();

}

/*

  Below crude drawing demostrates how color selection occurs for

  given channel index

  0°                     <--Hue Value-->                           360°

  |* . o . + . o . * . o . + . o . * . o . + . o . * . o . + . o . |

  * -> 0-3

  + -> 4-7

  o -> 8-15

  . -> 16-31

 */

QColor Plot::makeColor(unsigned int channelIndex)

{

    auto i = channelIndex;