/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtSvg module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef QSVGHANDLER_P_H+
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#define QSVGHANDLER_P_H+
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+
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//+
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//  W A R N I N G+
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//  -------------+
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//+
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// This file is not part of the Qt API.  It exists purely as an+
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// implementation detail.  This header file may change from version to+
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// version without notice, or even be removed.+
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//+
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// We mean it.+
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//+
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+
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#include "QtXml/qxmlstream.h"+
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+
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#ifndef QT_NO_SVG+
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+
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#include "QtCore/qhash.h"+
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#include "QtCore/qstack.h"+
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#include "qsvgstyle_p.h"+
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#include "private/qcssparser_p.h"+
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#include "private/qsvggraphics_p.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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class QSvgNode;+
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class QSvgTinyDocument;+
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class QSvgHandler;+
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class QColor;+
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class QSvgStyleSelector;+
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class QXmlStreamReader;+
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+
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struct QSvgCssAttribute+
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{+
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    QXmlStreamStringRef name;+
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    QXmlStreamStringRef value;+
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};+
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+
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class QSvgHandler+
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{+
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public:+
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    enum LengthType {+
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        LT_PERCENT,+
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        LT_PX,+
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        LT_PC,+
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        LT_PT,+
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        LT_MM,+
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        LT_CM,+
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        LT_IN,+
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        LT_OTHER+
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    };+
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+
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public:+
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    QSvgHandler(QIODevice *device);+
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    QSvgHandler(const QByteArray &data);+
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    QSvgHandler(QXmlStreamReader *const data);+
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    ~QSvgHandler();+
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+
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    QSvgTinyDocument *document() const;+
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+
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    inline bool ok() const {+
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        return document() != 0 && !xml->hasError();+
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    }+
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+
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    inline QString errorString() const { return xml->errorString(); }+
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    inline int lineNumber() const { return xml->lineNumber(); }+
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+
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    void setDefaultCoordinateSystem(LengthType type);+
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    LengthType defaultCoordinateSystem() const;+
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+
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    void pushColor(const QColor &color);+
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    void pushColorCopy();+
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    void popColor();+
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    QColor currentColor() const;+
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+
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    void setInStyle(bool b);+
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    bool inStyle() const;+
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+
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    QSvgStyleSelector *selector() const;+
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+
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    void setAnimPeriod(int start, int end);+
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    int animationDuration() const;+
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+
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    void parseCSStoXMLAttrs(QString css, QVector<QSvgCssAttribute> *attributes);+
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+
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    inline QPen defaultPen() const+
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    { return m_defaultPen; }+
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+
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public:+
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    bool startElement(const QString &localName, const QXmlStreamAttributes &attributes);+
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    bool endElement(const QStringRef &localName);+
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    bool characters(const QStringRef &str);+
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    bool processingInstruction(const QString &target, const QString &data);+
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+
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private:+
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    void init();+
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+
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    QSvgTinyDocument *m_doc;+
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    QStack<QSvgNode*> m_nodes;+
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+
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    QList<QSvgNode*>  m_resolveNodes;+
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+
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    enum CurrentNode+
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    {+
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        Unknown,+
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        Graphics,+
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        Style+
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    };+
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    QStack<CurrentNode> m_skipNodes;+
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+
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    /*!+
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        Follows the depths of elements. The top is current xml:space+
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        value that applies for a given element.+
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     */+
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    QStack<QSvgText::WhitespaceMode> m_whitespaceMode;+
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+
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    QSvgRefCounter<QSvgStyleProperty> m_style;+
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+
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    LengthType m_defaultCoords;+
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+
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    QStack<QColor> m_colorStack;+
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    QStack<int>    m_colorTagCount;+
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+
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    bool m_inStyle;+
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+
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    QSvgStyleSelector *m_selector;+
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+
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    int m_animEnd;+
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+
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    QXmlStreamReader *const xml;+
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    QCss::Parser m_cssParser;+
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    void parse();+
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    void resolveGradients(QSvgNode *node);+
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+
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    QPen m_defaultPen;+
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    /**+
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     * Whether we own the variable xml, and hence whether+
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     * we need to delete it.+
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     */+
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    const bool m_ownsReader;+
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};+
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+
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QT_END_NAMESPACE+
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+
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#endif // QT_NO_SVG+
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#endif // QSVGHANDLER_P_H+
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