/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#include "malstromanimator.h"

#include <QPainterPath>

#include "../chromesnippet.h"

#include <QList>

MalstromAnimator::MalstromAnimator(ChromeSnippet* m_snippet) 

  : VisibilityAnimator(m_snippet)

{

  m_path = new QPainterPath();

  m_path->moveTo(0,0);

  //m_path->lineTo(m_snippet->ownerArea().width()*2, 0); //LINE RIGHT

  //m_path->quadTo(m_snippet->ownerArea().width()*2,-m_snippet->ownerArea().height(), 500, -400); //QUAD RIGHT

  m_path->arcTo(0.0, 0.0, 300.0, -200.0, 0.0, 60.0);

}

MalstromAnimator::~MalstromAnimator()

{

  delete m_path;

}

void MalstromAnimator::setPath(QPainterPath * path)

{

  delete m_path;

  m_path = path;

}

void MalstromAnimator::updateVisibility(qreal start)

{

  qreal pathPercent = start;

  QList<QGraphicsItem*> snippets = m_snippet->childItems();

  if(snippets.size() > 0){

    for(int i = 0; i < snippets.size(); i++){

      if(pathPercent < 1.0){

	int xoffset = (int)m_path->pointAtPercent(pathPercent).x();

	int yoffset = (int)m_path->pointAtPercent(pathPercent).y();

	snippets[i]->setPos(xoffset, yoffset);

        QTransform t;

        t.scale(1.0-start, 1.0-start);

        snippets[i]->setTransform(t);

	pathPercent += 0.1;

        if(pathPercent > 0.9)

	  snippets[i]->setOpacity(0.0);

        else

          snippets[i]->setOpacity(1.0);

      }

    }

    if(start == 0){

      m_snippet->updateChildGeometries(); // Make sure we go back to original state

    }

  } else {

    QTransform transform;

    transform.translate(m_path->pointAtPercent(start).x(), m_path->pointAtPercent(start).y());

    m_snippet->setTransform(transform);

  }

}