/*

* Copyright (c) 2010 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:

*

*/

#ifndef HSWIDGETPOSITIONINGONWIDGETADD_H

#define HSWIDGETPOSITIONINGONWIDGETADD_H

#include <QList>

#include <QRectF>

#include <QPointF>

#include "hsconfiguration.h"

#include "hstest_global.h"

#include "hsdomainmodel_global.h"

HOMESCREEN_TEST_CLASS(TestHsDomainModel)

class HsWidgetHost;

class HSDOMAINMODEL_EXPORT HsWidgetPositioningOnWidgetAdd

{

public:

    virtual ~HsWidgetPositioningOnWidgetAdd() {}

    virtual QList<QRectF> convert(const QRectF &contentArea,

                                  const QList<QRectF> &existingRects,

                                  const QList<QRectF> &newRects,

                                  const QPointF &startPoint) = 0;

    static void setInstance(HsWidgetPositioningOnWidgetAdd *instance);

    static HsWidgetPositioningOnWidgetAdd *instance();

private:

    static HsWidgetPositioningOnWidgetAdd *mInstance;

};

class HSDOMAINMODEL_EXPORT HsAnchorPointInBottomRight : public HsWidgetPositioningOnWidgetAdd

{

public:

    QList<QRectF> convert(const QRectF &contentArea,

                          const QList<QRectF> &existingRects,

                          const QList<QRectF> &newRects,

                          const QPointF &startPoint);

};

class HSDOMAINMODEL_EXPORT HsAnchorPointInCenter : public HsWidgetPositioningOnWidgetAdd

{

public:

    QList<QRectF> convert(const QRectF &contentArea,

                          const QList<QRectF> &existingRects,

                          const QList<QRectF> &newRects,

                          const QPointF &startPoint);

 };

class HSDOMAINMODEL_EXPORT HsWidgetOrganizer : public HsWidgetPositioningOnWidgetAdd

{

public:

    HsWidgetOrganizer(int anchorDistance, HsConfiguration::WidgetOrganizerSearchSequence sequence);

    ~HsWidgetOrganizer();

public:

    QList<QRectF> convert(const QRectF &contentArea,

                          const QList<QRectF> &existingRects,

                          const QList<QRectF> &newRects,

                          const QPointF &startPoint);

private:

    enum SortMode {SortByHeight, SortByWidth, SortByArea};

    enum SearchMode {SearchColumn, SearchRow};

private:

    void initAnchors();

    bool checkExistingRects(const QList<QRectF> &existingRects);

    int convertToAnchors(int length);

    bool markAnchors(const QRectF &rect);

    int getAnchorListIndex(const QPointF &position);

    QPointF getPosition(const QSizeF &size);

    QPointF searchPositionRowByRow(QPointF startPoint, int width, int height);

    QPointF searchPositionColumnByColumn(QPointF startPoint, int width, int height);

    QPointF searchSpace(SearchMode mode, QPointF startPoint, int contentLength);

    QPointF getAnchorCoordinates(int index);

    QList<int> sortRects(SortMode mode, const QMap<int, QRectF> &rects);

private:

    int mAnchorDistance;

    HsConfiguration::WidgetOrganizerSearchSequence mSequence;

    QList<bool> mAnchors;

    QRectF mContentArea;

    int mAnchorColumns;

    int mAnchorRows;

    HsAnchorPointInCenter *mCenterAlgorithm;

    HOMESCREEN_TEST_FRIEND_CLASS(TestHsDomainModel)

};

#endif // HSWIDGETPOSITIONINGONWIDGETADD_H