/*

 * Copyright (c) 2009 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: Menu All Applications state.

 *

 */

#include <QPainter>

#include <QSize>

#include <QTimer>

#include "hsmenuitemmodel.h"

#include "hsiconsidleloader.h"

/*!

 Constructor

 \param model with defined icons

 \param pointer to parent object

 */

HsIconsIdleLoader::HsIconsIdleLoader(HsMenuItemModel *model, QObject *parent):

    QObject(parent),

    mModel(model),

    mTimer(NULL),

    mIconSize(mModel->getIconSize())

{

    mTimer = new QTimer(this);

    mOutStandingIconToLoad = mModel->rowCount();

    connect(mTimer, SIGNAL(timeout()), this, SLOT(processWhenIdle()));

    mTimer->start(0); // NOTE: zero for idle

}

/*!

 Destructor

 */

HsIconsIdleLoader::~HsIconsIdleLoader()

{

    mTimer->stop();

}

/*!

 Preloading icons if idle

 \retval void

 */

void HsIconsIdleLoader::processWhenIdle()

{

    if (mOutStandingIconToLoad >= 1 

        && mModel->rowCount() >= mOutStandingIconToLoad ) {

    	QPixmap pixmap(mIconSize.toSize());

    	pixmap.fill(Qt::transparent);

        QModelIndex idx = mModel->index(mOutStandingIconToLoad -1);

        HbIcon icon = mModel->entry(idx)->makeIcon(mIconSize);

        icon.setSize(mIconSize);

        // creating raster data

        QPainter painter;

        painter.begin(&pixmap);

        icon.paint(&painter, QRectF(QPointF(), mIconSize), 

                     Qt::KeepAspectRatio, 

                     Qt::AlignCenter, 

                     QIcon::Normal, 

                     QIcon::Off);

        painter.end();

        --mOutStandingIconToLoad;

    } else {

    	mTimer->stop(); // No more timing

	}

}