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

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtSvg module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, 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 qt-info@nokia.com.

**

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** $QT_END_LICENSE$

**

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

#ifndef QSVGGRAPHICS_P_H

#define QSVGGRAPHICS_P_H

//

//  W A R N I N G

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

//

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

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

// version without notice, or even be removed.

//

// We mean it.

//

#include "qsvgnode_p.h"

#ifndef QT_NO_SVG

#include "QtGui/qpainterpath.h"

#include "QtGui/qimage.h"

#include "QtGui/qtextlayout.h"

#include "QtGui/qtextoption.h"

#include "QtCore/qstack.h"

QT_BEGIN_NAMESPACE

class QTextCharFormat;

class QSvgAnimation : public QSvgNode

{

public:

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

};

class QSvgArc : public QSvgNode

{

public:

    QSvgArc(QSvgNode *parent, const QPainterPath &path);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

private:

    QPainterPath cubic;

    QRectF m_cachedBounds;

};

class QSvgCircle : public QSvgNode

{

public:

    QSvgCircle(QSvgNode *parent, const QRectF &rect);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

private:

    QRectF m_bounds;

};

class QSvgEllipse : public QSvgNode

{

public:

    QSvgEllipse(QSvgNode *parent, const QRectF &rect);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

private:

    QRectF m_bounds;

};

class QSvgImage : public QSvgNode

{

public:

    QSvgImage(QSvgNode *parent, const QImage &image,

              const QRect &bounds);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

private:

    QImage m_image;

    QRect  m_bounds;

};

class QSvgLine : public QSvgNode

{

public:

    QSvgLine(QSvgNode *parent, const QLineF &line);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

private:

    QLineF m_bounds;

};

class QSvgPath : public QSvgNode

{

public:

    QSvgPath(QSvgNode *parent, const QPainterPath &qpath);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

    QPainterPath *qpath() {

        return &m_path;

    }

private:

    QPainterPath m_path;

    mutable QRectF m_cachedBounds;

};

class QSvgPolygon : public QSvgNode

{

public:

    QSvgPolygon(QSvgNode *parent, const QPolygonF &poly);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

private:

    QPolygonF m_poly;

};

class QSvgPolyline : public QSvgNode

{

public:

    QSvgPolyline(QSvgNode *parent, const QPolygonF &poly);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

private:

    QPolygonF m_poly;

};

class QSvgRect : public QSvgNode

{

public:

    QSvgRect(QSvgNode *paren, const QRectF &rect, int rx=0, int ry=0);

    virtual Type type() const;

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual QRectF bounds() const;

private:

    QRectF m_rect;

    int m_rx, m_ry;

};

class  QSvgTspan;

class  QSvgText : public QSvgNode

{

public:

    enum WhitespaceMode

    {

        Default,

        Preserve

    };

    QSvgText(QSvgNode *parent, const QPointF &coord);

    ~QSvgText();

    void setTextArea(const QSizeF &size);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    void addTspan(QSvgTspan *tspan) {m_tspans.append(tspan);}

    void addText(const QString &text);

    void addLineBreak() {m_tspans.append(LINEBREAK);}

    void setWhitespaceMode(WhitespaceMode mode) {m_mode = mode;}

    //virtual QRectF bounds() const;

private:

    static QSvgTspan * const LINEBREAK;

    QPointF m_coord;

    // 'm_tspans' is also used to store characters outside tspans and line breaks.

    // If a 'm_tspan' item is null, it indicates a line break.

    QVector<QSvgTspan *> m_tspans;

    Type m_type;

    QSizeF m_size;

    WhitespaceMode m_mode;

};

class  QSvgTspan : public QSvgNode

{

public:

    // tspans are also used to store normal text, so the 'isProperTspan' is used to separate text from tspan.

    QSvgTspan(QSvgNode *parent, bool isProperTspan = true)

        : QSvgNode(parent), m_mode(QSvgText::Default), m_isTspan(isProperTspan)

    {

    }

    ~QSvgTspan() { };

    virtual Type type() const {return TSPAN;}

    virtual void draw(QPainter *, QSvgExtraStates &) {Q_ASSERT(!"Tspans should be drawn through QSvgText::draw().");}

    void addText(const QString &text) {m_text += text;}

    const QString &text() const {return m_text;}

    bool isTspan() const {return m_isTspan;}

    void setWhitespaceMode(QSvgText::WhitespaceMode mode) {m_mode = mode;}

    QSvgText::WhitespaceMode whitespaceMode() const {return m_mode;}

private:

    QString m_text;

    QSvgText::WhitespaceMode m_mode;

    bool m_isTspan;

};

class QSvgUse : public QSvgNode

{

public:

    QSvgUse(const QPointF &start, QSvgNode *parent, QSvgNode *link);

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

    virtual QRectF bounds() const;

    virtual QRectF transformedBounds(const QTransform &transform) const;

private:

    QSvgNode *m_link;

    QPointF   m_start;

    mutable QRectF    m_bounds;

};

class QSvgVideo : public QSvgNode

{

public:

    virtual void draw(QPainter *p, QSvgExtraStates &states);

    virtual Type type() const;

};

QT_END_NAMESPACE

#endif // QT_NO_SVG

#endif // QSVGGRAPHICS_P_H