1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #include "malstromanimator.h"

    20 #include <QPainterPath>

    21 #include "../chromesnippet.h"

    22 #include <QList>

    23 

    24 MalstromAnimator::MalstromAnimator(ChromeSnippet* m_snippet) 

    25   : VisibilityAnimator(m_snippet)

    26 {

    27   m_path = new QPainterPath();

    28   m_path->moveTo(0,0);

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

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

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

    32 }

    33 

    34 MalstromAnimator::~MalstromAnimator()

    35 {

    36   delete m_path;

    37 }

    38 

    39 void MalstromAnimator::setPath(QPainterPath * path)

    40 {

    41   delete m_path;

    42   m_path = path;

    43 }

    44 

    45 void MalstromAnimator::updateVisibility(qreal start)

    46 {

    47   

    48   qreal pathPercent = start;

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

    50   if(snippets.size() > 0){

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

    52       if(pathPercent < 1.0){

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

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

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

    56         QTransform t;

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

    58         snippets[i]->setTransform(t);

    59 	pathPercent += 0.1;

    60         if(pathPercent > 0.9)

    61 	  snippets[i]->setOpacity(0.0);

    62         else

    63           snippets[i]->setOpacity(1.0);

    64       }

    65     }

    66     if(start == 0){

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

    68     }

    69   } else {

    70     QTransform transform;

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

    72     m_snippet->setTransform(transform);

    73   }

    74  

    75 }