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

**

** 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 HBTEXTITEM_P_H

#define HBTEXTITEM_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Hb API.  It exists purely as an

// implementation detail.  This file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QTextLayout>

#include "hbtextitem.h"

#include "hbwidgetbase_p.h"

class QFontMetricsF;

class QLinearGradient;

class HbTextItemPrivate : public HbWidgetBasePrivate

{

    Q_DECLARE_PUBLIC(HbTextItem)

public:

    HbTextItemPrivate();

    void init(QGraphicsItem *parent);

    void clear();

    bool doLayout(const QString& text, const qreal lineWidth, qreal leading);

    void setSize(const QSizeF &newSize);

    void updateTextOption();

    void calculateVerticalOffset();

    void updateLayoutDirection();

    int textFlagsFromTextOption() const;

    int findIndexOfLastLineBeforeY(qreal y) const;

    QString elideLayoutedText(const QSizeF& size, const QFontMetricsF& metrics) const;

    bool adjustSizeHint();

    bool fadeNeeded(const QRectF& contentRect) const;

    static inline void setupGradient(QLinearGradient *gradient, QColor color);

    void calculateFadeRects();

    static inline void setPainterPen(QPainter *painter,

                             const QPen& pen,

                             const QPointF& lineBegin);

    int paintFaded(QPainter *painter,

                    int firstItemToPaint,

                    const QPen& leftPen,

                    const QPen& centerPen,

                    const QPen& rightPen,

    void paintWithFadeEffect(QPainter *painter) const;

    void setFadeLengths(qreal xLength, qreal yLength);

    QRectF layoutBoundingRect() const;

    QRectF boundingRect(const QRectF& contentsRect) const;

    QString mText;

    Qt::Alignment mAlignment;

    Qt::TextElideMode mElideMode;

    bool mInvalidateShownText;

    QRectF mOldContentsRect;

    QColor mColor;

    mutable QColor mDefaultColor; // color used when no color was set

    QTextLayout mTextLayout;

    QPointF mOffsetPos;

    bool mPaintFaded;

    qreal mFadeLengthX; // distance on which fade efect is performed when text doesn't fit content rectangle

    qreal mFadeLengthY; // distance on which fade efect is performed when text doesn't fit content rectangle

    qreal mCornerFadeX;

    qreal mCornerFadeY;

    QRectF mFadeToRect;

    QRectF mFadeFromRect;

    qreal mPrefHeight;

    int mMinLines;

    int mMaxLines;

    bool mNeedToAdjustSizeHint;

    QSizeF oldSize;

    mutable bool mUpdateColor;

    static bool outlinesEnabled;

};

#endif // HBTEXTITEM_P_H