/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbCore module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#ifndef HB_EFFECT_UTILS_P_H

#define HB_EFFECT_UTILS_P_H

#include <hbglobal.h>

#include <QEasingCurve>

#include <QRectF>

QT_FORWARD_DECLARE_CLASS(QGraphicsItem)

class HbEffectFxmlParamData;

class HB_AUTOTEST_EXPORT HbEffectUtils

{

public:

    enum valueType {

        // Returns defined size in item size units

        Size = 0,

        // Returns defined position in item pos coordinates (can be used with item->setPos())

        Position = 1,

        // Returns the defined center relative to the item's pos (used with rotate)

        Center = 2,

        // Returns the defined center mapped to the target rectangle (used with scale)

        CenterMappedToTargetRect = 3

    };

    static qreal resolveFxmlRef(

        const QString &ref,

        const QString &value,

        bool *ok,

        const QGraphicsItem *item,

        valueType type,

        const QRectF &extRect = QRectF());

    static qreal resolveFxmlRef(

        const HbEffectFxmlParamData &data,

        bool *ok,

        const QGraphicsItem *item,

        valueType type,

        const QRectF &extRect = QRectF());

    static void resolveFxmlCurveShape(QEasingCurve &curve, const HbEffectFxmlParamData &data);

    static void resolveFxmlDuration(int &duration, const HbEffectFxmlParamData &data);

    static inline bool fuzzyIsNull(double d) {

        return qAbs(d) <= 0.000000000001;

    }

    static inline bool fuzzyIsNull(float f) {

        return qAbs(f) <= 0.00001f;

    }

    static inline bool fuzzyIsOneOrGreater(double d) {

        return d >= 1.0 - 0.000000000001;

    }

    static inline bool fuzzyIsOneOrGreater(float f) {

        return f >= 1.0f - 0.00001f;

    }

};

#endif // HB_EFFECT_UTILS_P_H