/*

* 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 <QtGlobal>

#include "hswidgetpositioningonwidgetadd.h"

#include <math.h>

#include <QLineF>

const qreal offset = 40; //TODO: Implement this as configurable parameter

/*!

    \class HsWidgetPositioningOnWidgetAdd

    \brief Defines widget positioning on widget add.

    Widget positioning on widget add sets positions for

    a set of home screen widgets added from application library.

*/

/*!

    Sets the positioning \a instance as the current one.

    Deletes the existing instance if present.

*/

void HsWidgetPositioningOnWidgetAdd::setInstance(

    HsWidgetPositioningOnWidgetAdd *instance)

{

    if (mInstance)

        delete mInstance;

    mInstance = instance;

}

/*!

    Returns the current positioning instance.

*/

HsWidgetPositioningOnWidgetAdd *HsWidgetPositioningOnWidgetAdd::instance()

{

    return mInstance;

}

/*!

    Stores the current positioning instance.

*/

HsWidgetPositioningOnWidgetAdd *HsWidgetPositioningOnWidgetAdd::mInstance = 0;

/*!

    \class HsAnchorPointInBottomRight

    \brief Diagonal widget positioning algorithm.

    Sets widget's lower right corner to follow content area's diagonal.

    Widgets are positioned to certain offset to each other.

*/

QList<QRectF> HsAnchorPointInBottomRight::convert(

    const QRectF &contentArea,

{

    QList<QRectF> toGeometries;

    //Offset for widgets' bottom right position to each other

    qreal k = contentArea.height()/contentArea.width(); //slope of the diagonal

    qreal offset_x = offset/(sqrt(k + 1));

    qreal offset_y = k*offset_x;

    QPointF offsetPoint(offset_x, offset_y);

    }

        anchorPoint -= offsetPoint;

    }

    return toGeometries;

}

/*!

    \class HsAnchorPointInCenter

    \brief Diagonal widget positioning algorithm.

    Sets widget's center point to follow content area's diagonal.

    Widgets are positioned to certain offset to each other.

*/

#ifdef COVERAGE_MEASUREMENT

#pragma CTC SKIP

#endif //COVERAGE_MEASUREMENT

QList<QRectF> HsAnchorPointInCenter::convert(

    const QRectF &contentArea,

{

    QList<QRectF> toGeometries;

    //Offset for widgets' centers position to each other

    qreal k = contentArea.height()/contentArea.width(); //slope of the diagonal

    qreal offset_x = offset/(sqrt(k + 1));

    qreal offset_y = k*offset_x;

    QPointF offsetPoint(offset_x, offset_y);

    //First widget to the center of the content area

    QPointF anchorPoint = contentArea.center();

        g.moveCenter(anchorPoint);

        toGeometries << g;

        anchorPoint -= offsetPoint;

        if(!contentArea.contains(anchorPoint)) {

            anchorPoint = contentArea.bottomRight();

        }

    }

    return toGeometries;

}

#ifdef COVERAGE_MEASUREMENT

#pragma CTC ENDSKIP

#endif //COVERAGE_MEASUREMENT