1 /*

     2 * Copyright (c) 2009 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  * HgImageFader.cpp

    19  *

    20  *  Created on: Feb 10, 2010

    21  *      Author: anpentti

    22  */

    23 

    24 #include "HgImageFader.h"

    25 #include "hgimage.h"

    26 

    27 HgImageFader::HgImageFader()

    28 {

    29     QObject::connect(&mTimer, SIGNAL(timeout()), this, SLOT(doFading()));

    30 }

    31 

    32 HgImageFader::~HgImageFader()

    33 {

    34     if (mTimer.isActive())

    35         mTimer.stop();

    36 }

    37 

    38 void HgImageFader::addImage(HgImage* image)

    39 {

    40     mImages.push_back(image);

    41 }

    42 

    43 void HgImageFader::removeImage(HgImage* image)

    44 {

    45     mImages.removeOne(image);

    46 }

    47 

    48 void HgImageFader::fadeImages()

    49 {

    50     if (!mImages.empty() && !mTimer.isActive())

    51     {

    52         mTimer.start(10);

    53     }

    54 }

    55 

    56 void HgImageFader::doFading()

    57 {

    58     QLinkedList<HgImage*>::iterator i = mImages.begin();

    59     while (i != mImages.end())

    60     {

    61         HgImage* image = (*i);

    62         image->setAlpha(image->alpha() + 0.1f);

    63         if (image->alpha() >= 1.0f)

    64         {

    65             image->setAlpha(1.0f);

    66             i = mImages.erase(i);

    67         }

    68         else

    69         {

    70             i++;

    71         }

    72     }

    73     

    74     //emit doUpdate();

    75     

    76     if (mImages.empty())

    77     {

    78         mTimer.stop();

    79     }

    80 }