/*

* 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:

*

*/

#include <HbInstance>

#include "hsdomainmodeldatastructures.h"

#include "hspagenewwidgetlayout.h"

#include "hsscene.h"

#include "hsdatabase.h"

#include "hswidgethost.h"

#include "hswallpaper.h"

#include "hswidgetpositioningonwidgetadd.h"

#include "hswidgetpositioningonorientationchange.h"

#include "hsconfiguration.h"

/*!

    \class HsPageNewWidgetLayout

    \ingroup group_hsdomainmodel

    \brief Represents a page in the framework.

    HsPage is a parent for a group of widgets. HsPage can have a wallpaper.

*/

/*!

    Constructor.

    \a parent Owner.

*/

HsPageNewWidgetLayout::HsPageNewWidgetLayout(const QPointF &touchPoint,

                                             QGraphicsLayoutItem *parent)

    : QGraphicsLayout(parent),    

    mTouchPoint(touchPoint)

{

    mSize = HsScene::mainWindow()->layoutRect().size();

}

/*!

    Destructor.

*/

HsPageNewWidgetLayout::~HsPageNewWidgetLayout()

{

}

/*!

    Returns children count.

*/

int HsPageNewWidgetLayout::count() const

{

    return mNewWidgets.count();

}

/*!

    Returns item index of \a i.

*/

QGraphicsLayoutItem *HsPageNewWidgetLayout::itemAt(int i) const

{

    return mNewWidgets.at(i);

}

/*!

    Removes item \a index.

*/

void HsPageNewWidgetLayout::removeAt(int index)

{

    mNewWidgets.removeAt(index);

}

/*!

    Size hint.

*/

QSizeF HsPageNewWidgetLayout::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const

{

     switch (which) {

     case Qt::MinimumSize:

     case Qt::PreferredSize:

         return mSize;

     case Qt::MaximumSize:

         return mSize;

     default:

         break;

     }

     return constraint;

}

/*!

    Recalculates children positions.

*/

void HsPageNewWidgetLayout::setGeometry(const QRectF &rect)

{

    QGraphicsLayout::setGeometry(rect);

    QList<QRectF> rects;

    foreach (HsWidgetHost *newWidget, mNewWidgets) {

        rects << QRectF(QPointF(), newWidget->preferredSize());

    }

    /* if there is touch point defined (widget added from context menu)

       then there is only one widget in the list

       -> set widget center point to this touch point

    */

    if (mTouchPoint != QPointF() && mNewWidgets.count() == 1) {

        QRectF pageRect = HsScene::mainWindow()->layoutRect();

        qreal widgetX = qBound(qreal(0), mTouchPoint.x() - rects.at(0).width() / 2, pageRect.width() - rects.at(0).width());

        qreal widgetY = qBound(qreal(64), mTouchPoint.y() - rects.at(0).height() / 2, pageRect.height() - rects.at(0).height());

        mNewWidgets.at(0)->setGeometry(widgetX,

                                       widgetY,

                                       rects.at(0).width(), 

                                       rects.at(0).height());

        /* we have to save widget presentation data here after drawing

           to get correct position for later use

        */

        mNewWidgets.at(0)->savePresentation();

    }

    // otherwise calculate position with algorithm

    else {

        HsWidgetPositioningOnWidgetAdd *algorithm =

            HsWidgetPositioningOnWidgetAdd::instance();

        QRectF pageRect = HsScene::mainWindow()->layoutRect();

        pageRect.adjust( (qreal)0,(qreal)64,(qreal)0,(qreal)0);

        QList<QRectF> calculatedRects =

            algorithm->convert(pageRect, rects, QPointF());

        for ( int i=0; i<mNewWidgets.count(); i++) {

            mNewWidgets.at(i)->setGeometry(calculatedRects.at(i));

            mNewWidgets.at(i)->savePresentation();

        }

    }

}

/*!

    Adds item to layout.

*/

void HsPageNewWidgetLayout::addItem(HsWidgetHost *item)

{

    mNewWidgets.append(item);

}