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 #include "HgImageFader.h"

    18 #include "hgimage.h"

    19 

    20 HgImageFader::HgImageFader()

    21 {

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

    23 }

    24 

    25 HgImageFader::~HgImageFader()

    26 {

    27     if (mTimer.isActive())

    28         mTimer.stop();

    29 }

    30 

    31 void HgImageFader::addImage(HgImage* image)

    32 {

    33     mImages.push_back(image);

    34 }

    35 

    36 void HgImageFader::removeImage(HgImage* image)

    37 {

    38     mImages.removeOne(image);

    39 }

    40 

    41 void HgImageFader::fadeImages()

    42 {

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

    44     {

    45         mTimer.start(10);

    46     }

    47 }

    48 

    49 void HgImageFader::doFading()

    50 {

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

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

    53     {

    54         HgImage* image = (*i);

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

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

    57         {

    58             image->setAlpha(1.0f);

    59             i = mImages.erase(i);

    60         }

    61         else

    62         {

    63             i++;

    64         }

    65     }

    66     

    67     //emit doUpdate();

    68     

    69     if (mImages.empty())

    70     {

    71         mTimer.stop();

    72     }

    73 }