/**
  * @RDE_HEADER@
  * passive container for view which only draws QPushButtons to save ressources
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Mike Wille, SLSE, 2014-10-01
  */

#include "PassiveEventContainer.h"
#include "EventGraphic.h"
#include "EventTools.h"

#include <QGuiApplication>
#include <QPainter>
#include <QPen>
#include <QStyleOptionViewItem>
#include <QBrush>

#include <math.h>
#include <time.h>

#include <QDebug>


namespace LtsTimelineClassic
{

PassiveEventContainer::PassiveEventContainer(bool ignoreKnownRanges, QObject *parent)
  : QObject(parent)
  , m_ignoreKnownRanges(ignoreKnownRanges)
{

}


PassiveEventContainer::~PassiveEventContainer()
{
  qDeleteAll(m_eventGraphicList);
}


EventGraphicList PassiveEventContainer::getEventGraphicList() const
{
  return m_eventGraphicList;
}


void PassiveEventContainer::setEventList(const EventGraphicList &eventGraphicList)
{
  qDeleteAll(m_eventGraphicList);

  m_eventGraphicList = eventGraphicList; // copy
}


void PassiveEventContainer::paint(QPainter *painter, const QStyleOptionViewItem &option, const LineMap &lineMap,
                                  const QVector<Range> &knownRanges) const
{
  EventTools::s_test++;

  bool alternate = option.features.testFlag(QStyleOptionViewItem::ViewItemFeature::Alternate);
  const QColor bg = QColor(alternate ? QRgb(0xF6D8CE) : QRgb(0xFBF2EF));

  QColor cachedBg(Qt::white);
  if (alternate)
    cachedBg = cachedBg.darker(110);


  painter->fillRect(option.rect, QBrush(bg));

  int posX1 = option.rect.x();
  int posX2 = option.rect.right();
  int posY1 = option.rect.y();
  int posY2 = option.rect.bottom();
  int h = posY2 - posY1 + 1;

  painter->save();
  painter->setClipping(true); // no drawing outside
  painter->setClipRect(option.rect.adjusted(0, 0, 1, 1));

  int eventWidth = EventTools::eventWidth();


  if (m_ignoreKnownRanges)
  {
    painter->fillRect(QRect(posX1, posY1, posX2 - posX1, h), cachedBg);///*option.backgroundBrush);//*/QBrush(QColor("white")));
  }
  else // draw known ranges
  {
    for (const auto &range : knownRanges)
    {
      int rangeStart = EventTools::getEventPosition(range.start);
      int rangeEnd = EventTools::getEventPosition(range.end);

      //if (posX1 >= option.rect.x() && posX1 < option.rect.x() + option.rect.width() + 1)
      if (rangeEnd >= posX1 && rangeStart <= posX2) // do not draw if out of view
        painter->fillRect(QRect(rangeStart, posY1, rangeEnd - rangeStart + eventWidth + 1, h), cachedBg);///*option.backgroundBrush);//*/QBrush(QColor("white")));
    }
  }

//  // draw live time as known (if live)
//  if (liveTime > 0)
//  {
//    int liveStart = EventTools::getEventPosition(liveTime);
//    if (liveStart <= posX2) // do not draw if out of view
//      painter->fillRect(QRect(liveStart, posY1, posX2 - liveTime, h), QBrush(QColor("white")));
//  }


  painter->restore();


  // draw date text lines first, can be overdrawn

  //for (int i = 0; i < lineMap.count(); i++)
  for (auto i = lineMap.constBegin(); i != lineMap.constEnd(); ++i)
  {
    int posX = i.key(); //lineMap.at(i);

    painter->setPen(QPen(QBrush(QGuiApplication::palette().shadow()), 1.0));

    if (posX >  option.rect.x() &&
        posX < (option.rect.x()  + option.rect.width())) // do not draw if out of view
      painter->drawLine(posX, posY1, posX, posY2);
  }

  //EventTools::setValues(min, max, scrollBarPosition, zoomFactor);
  //refreshEventList();



  // NOTE: painter's viewport is the whole timeline (without the header part)
  // NOTE: option.rect is the line and section the events get draw on, only
  EventTools::drawEvents(painter, m_eventGraphicList, option.rect.y());
//  qWarning() << "<<< viewport" << painter->viewport() << "rect" << option.rect;
}

} // namespace LtsTimelineClassic