TimeSeriesChart.cpp

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/*  Copyright (C) 2008 National Institute For Space Research (INPE) - Brazil.

    This file is part of the TerraLib - a Framework for building GIS enabled applications.

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

    TerraLib 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with TerraLib. See COPYING. If not, write to
    TerraLib Team at <terralib-team@terralib.org>.
*/

/*!
  \file  terralib/qt/widgets/charts/TimeSeriesChart.cpp

  \brief A class to represent a timeSeries' chart.
*/

// TerraLib
#include "../../../dataaccess/dataset/ObjectIdSet.h"
#include "../../../datatype/Date.h"
#include "../../../datatype/DateTime.h"
#include "../../../datatype/TimeInstant.h"
#include "../../../qt/widgets/se/Utils.h"
#include "../../../st/core/timeseries/TimeSeries.h"
#include "../../../st/core/timeseries/TimeSeriesIterator.h"
#include "Enums.h"
#include "StringScaleDraw.h"
#include "TimeScaleDraw.h"
#include "TimeSeriesChart.h"
#include "TimeSeriesStyle.h"
#include "Utils.h"

//QWT
#include <qwt_symbol.h>
#include <qwt_plot.h>
#include <qwt_date.h>

//Boost
#include "boost/date_time/gregorian/gregorian.hpp"

//STL
#include <limits>

te::qt::widgets::TimeSeriesChart::TimeSeriesChart(te::st::TimeSeries* data)
    :

      m_timeSeries(data)
{
  //Set style
  setStyle(QwtPlotCurve::Lines);
  setPaintAttribute(QwtPlotCurve::ClipPolygons);

  //Set Values
  setData();

  //Adjusting the symbol
  m_timeSeriesStyle =  new te::qt::widgets::TimeSeriesStyle();
  QPen linePen;
  te::qt::widgets::Config(linePen, m_timeSeriesStyle->getStroke());
}

te::qt::widgets::TimeSeriesChart::TimeSeriesChart(te::st::TimeSeries* data,
                                                  TimeSeriesStyle* style,
                                                  size_t /*size*/)
    : m_timeSeries(data), m_timeSeriesStyle(style)
{
  //Set style
  setStyle(QwtPlotCurve::Lines);
  setPaintAttribute(QwtPlotCurve::ClipPolygons);

  //Set Values
  setData();
}

void te::qt::widgets::TimeSeriesChart::setData()
{
  QPolygonF samples;
  std::set<std::string> dates;

  te::st::TimeSeriesIterator it = m_timeSeries->begin();
  while(it != m_timeSeries->end())
  {
    te::dt::DateTime* dateTime = it.getTime();
    double date=0;

    if(dateTime->getDateTimeType() == te::dt::TIME_INSTANT)
    {
      std::unique_ptr<te::dt::TimeInstant> time((te::dt::TimeInstant*)dateTime);
      QDate qdatei(time->getDate().getYear(), time->getDate().getMonth(), time->getDate().getDay());
      QTime qtimei(time->getTime().getHours(), time->getTime().getMinutes(), time->getTime().getSeconds());
      QDateTime qdate(qdatei, qtimei);
      date = QwtDate::toDouble(qdate);
    }
    else if(dateTime->getDateTimeType() == te::dt::DATE)
    {
      std::unique_ptr<te::dt::Date> d ((te::dt::Date*)dateTime);
      QDate qdatei(d->getDate().year(), d->getDate().month(), d->getDate().day());
      QTime qtimei(0, 0); // Hours, minutes and second information not available in this date type
      QDateTime qdate(qdatei, qtimei);
      date = QwtDate::toDouble(qdate);
    }

    samples += QPointF(date, it.getDouble());
    ++it;
  }
  m_dates = dates;
  setSamples( samples );
}

te::qt::widgets::TimeSeriesChart::~TimeSeriesChart()
{
  delete m_timeSeriesStyle;
}

int  te::qt::widgets::TimeSeriesChart::rtti() const
{
  return te::qt::widgets::TIMESERIES_CHART;
}

void te::qt::widgets::TimeSeriesChart::attach(QwtPlot* plot)
{
  plot->setAxisScaleDraw(QwtPlot::xBottom, new te::qt::widgets::TimeScaleDraw());
  plot->axisScaleDraw(QwtPlot::xBottom)->setLabelAlignment(Qt::AlignLeft | Qt::AlignVCenter);
  plot->axisScaleDraw(QwtPlot::xBottom)->setLabelRotation(-60);
  QwtPlotCurve::attach(plot);
}

te::st::TimeSeries* te::qt::widgets::TimeSeriesChart::getTimeSeries()
{
 return m_timeSeries;
}

void te::qt::widgets::TimeSeriesChart::setTimeSeries(te::st::TimeSeries* newTimeSeries)
{
  delete m_timeSeries;
  m_timeSeries = newTimeSeries;
}

te::qt::widgets::TimeSeriesStyle* te::qt::widgets::TimeSeriesChart::getTimeSeriesStyle()
{
 return m_timeSeriesStyle->clone();
}

void te::qt::widgets::TimeSeriesChart::setTimeSeriesStyle(te::qt::widgets::TimeSeriesStyle* newStyle)
{
  delete m_timeSeriesStyle;
  m_timeSeriesStyle = newStyle;

  //The pen that will be used
  QPen linePen;

  //Configuring the pen and brush based on the current style
  te::qt::widgets::Config(linePen, m_timeSeriesStyle->getStroke());

  //Updating the chart's pen.
  setPen(linePen);
}

void te::qt::widgets::TimeSeriesChart::setDateFormat(std::string dateFormat)
{
  //Checking if this chart has a plot attached
  if(plot())
    plot()->setAxisScaleDraw(QwtPlot::xBottom, new te::qt::widgets::TimeScaleDraw(dateFormat));
}