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// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QSVGSTRUCTURE_P_H

#define QSVGSTRUCTURE_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"

#include <QtSvg/private/qsvghelper_p.h>

#include <QtCore/qlist.h>

#include <list>

#include <utility>

QT_BEGIN_NAMESPACE

class QSvgDocument;

class QSvgNode;

class QPainter;

class QSvgDefs;

class Q_SVG_EXPORT QSvgStructureNode : public QSvgNode

public:

    QSvgStructureNode(QSvgNode *parent);

    ~QSvgStructureNode() override;

    void addChild(QSvgDocument *doc, std::unique_ptr<QSvgNode> child, const QString &id);

    QRectF internalBounds(QPainter *p, QSvgExtraStates &states) const override;

    QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;

    QSvgNode *previousSiblingNode(QSvgNode *n) const;

    const std::list<std::unique_ptr<QSvgNode>> &renderers() const { return m_renderers; }

protected:

    void releaseDescendants();

protected:

    std::list<std::unique_ptr<QSvgNode>>          m_renderers;

    mutable bool              m_recursing{false};

};

class Q_SVG_EXPORT QSvgG : public QSvgStructureNode

public:

    QSvgG(QSvgNode *parent);

    ~QSvgG() override;

    void drawCommand(QPainter *, QSvgExtraStates &) override;

    bool shouldDrawNode(QPainter *p, QSvgExtraStates &states) const override;

    Type type() const override;

    bool requiresGroupRendering() const override;

};

class Q_SVG_EXPORT QSvgDefs : public QSvgStructureNode

public:

    QSvgDefs(QSvgNode *parent);

    ~QSvgDefs() override;

    void drawCommand(QPainter *, QSvgExtraStates &) override {};

    bool shouldDrawNode(QPainter *p, QSvgExtraStates &states) const override;

    Type type() const override;

};

class Q_SVG_EXPORT QSvgSymbolLike : public QSvgStructureNode

    // Marker, Symbol and potentially other elements share a lot of common

    // attributes and functionality. By making a common base class we can

    // avoid repetition.

public:

    enum class Overflow : quint8 {

        Visible,

        Hidden,

        Scroll = Visible, //Will not support scrolling

        Auto = Visible

};

    enum class PreserveAspectRatio : quint8 {

        None =  0b000000,

        xMin =  0b000001,

        xMid =  0b000010,

        xMax =  0b000011,

        yMin =  0b000100,

        yMid =  0b001000,

        yMax =  0b001100,

        meet =  0b010000,

        slice = 0b100000,

        xMask = xMin | xMid | xMax,

        yMask = yMin | yMid | yMax,

        xyMask = xMask | yMask,

        meetSliceMask = meet | slice

};

    Q_DECLARE_FLAGS(PreserveAspectRatios, PreserveAspectRatio)

    QSvgSymbolLike(QSvgNode *parent, QRectF bounds, QRectF viewBox, QPointF refP,

                   QSvgSymbolLike::PreserveAspectRatios pAspectRatios, QSvgSymbolLike::Overflow overflow);

    ~QSvgSymbolLike() override;

    void drawCommand(QPainter *, QSvgExtraStates &) override {};

    QRectF decoratedInternalBounds(QPainter *p, QSvgExtraStates &states) const override;

    bool requiresGroupRendering() const override;

    QRectF viewBox() const

        return m_viewBox;

    QRectF rect() const

        return m_rect;

    QPointF refP() const

        return m_refP;

    QTransform aspectRatioTransform() const;

    QRectF clipRect() const;

    Overflow overflow() const

        return m_overflow;

    PreserveAspectRatios preserveAspectRatios() const

        return m_pAspectRatios;

protected:

    void setPainterToRectAndAdjustment(QPainter *p) const;

protected:

    QRectF m_rect;

    QRectF m_viewBox;

    QPointF m_refP;

    PreserveAspectRatios m_pAspectRatios;

    Overflow m_overflow;

};

Q_DECLARE_OPERATORS_FOR_FLAGS(QSvgSymbolLike::PreserveAspectRatios)

class Q_SVG_EXPORT QSvgSymbol : public QSvgSymbolLike

public:

    QSvgSymbol(QSvgNode *parent, QRectF bounds, QRectF viewBox, QPointF refP,

               QSvgSymbolLike::PreserveAspectRatios pAspectRatios, QSvgSymbolLike::Overflow overflow);

    ~QSvgSymbol() override;

    void drawCommand(QPainter *p, QSvgExtraStates &states) override;

    Type type() const override;

};

class Q_SVG_EXPORT QSvgMarker : public QSvgSymbolLike

public:

    enum class Orientation : quint8 {

        Auto,

        AutoStartReverse,

        Value

};

    enum class MarkerUnits : quint8 {

        StrokeWidth,

        UserSpaceOnUse

};

    QSvgMarker(QSvgNode *parent, QRectF bounds, QRectF viewBox, QPointF refP,

               QSvgSymbolLike::PreserveAspectRatios pAspectRatios, QSvgSymbolLike::Overflow overflow,

               Orientation orientation, qreal orientationAngle, MarkerUnits markerUnits);

    ~QSvgMarker() override;

    void drawCommand(QPainter *p, QSvgExtraStates &states) override;

    static void drawMarkersForNode(QSvgNode *node, QPainter *p, QSvgExtraStates &states);

    static QRectF markersBoundsForNode(const QSvgNode *node, QPainter *p, QSvgExtraStates &states);

    Orientation orientation() const {

        return m_orientation;

    qreal orientationAngle() const {

        return m_orientationAngle;

    MarkerUnits markerUnits() const {

        return m_markerUnits;

    Type type() const override;

private:

    static void drawHelper(const QSvgNode *node, QPainter *p,

                           QSvgExtraStates &states, QRectF *boundingRect = nullptr);

    Orientation m_orientation;

    qreal m_orientationAngle;

    MarkerUnits m_markerUnits;

};

class Q_SVG_EXPORT QSvgFilterContainer : public QSvgStructureNode

public:

    QSvgFilterContainer(QSvgNode *parent, const QSvgRectF &bounds, QtSvg::UnitTypes filterUnits, QtSvg::UnitTypes primitiveUnits);

    ~QSvgFilterContainer() override;

    void drawCommand(QPainter *, QSvgExtraStates &) override {};

    bool shouldDrawNode(QPainter *, QSvgExtraStates &) const override;

    Type type() const override;

    QImage applyFilter(const QImage &buffer, QPainter *p, const QRectF &bounds) const;

    void setSupported(bool supported);

    bool supported() const;

    QRectF filterRegion(const QRectF &itemBounds) const;

    QSvgRectF rect() const { return m_rect; }

    QtSvg::UnitTypes filterUnits() const { return m_filterUnits; }

    QtSvg::UnitTypes primitiveUnits() const { return m_primitiveUnits; }

private:

    QSvgRectF m_rect;

    QtSvg::UnitTypes m_filterUnits;

    QtSvg::UnitTypes m_primitiveUnits;

    bool m_supported;

};

class Q_SVG_EXPORT QSvgSwitch : public QSvgStructureNode

public:

    QSvgSwitch(QSvgNode *parent);

    ~QSvgSwitch() override;

    void drawCommand(QPainter *p, QSvgExtraStates &states) override;

    Type type() const override;

    QSvgNode *childToRender() const;

private:

    void init();

private:

    QString m_systemLanguage;

    QString m_systemLanguagePrefix;

};

class Q_SVG_EXPORT QSvgMask : public QSvgStructureNode

public:

    QSvgMask(QSvgNode *parent, QSvgRectF bounds,

             QtSvg::UnitTypes contentsUnits);

    ~QSvgMask() override;

    void drawCommand(QPainter *, QSvgExtraStates &) override {};

    bool shouldDrawNode(QPainter *, QSvgExtraStates &) const override;

    Type type() const override;

    QImage createMask(QPainter *p, QSvgExtraStates &states, QSvgNode *targetNode, QRectF *globalRect) const;

    QImage createMask(QPainter *p, QSvgExtraStates &states, const QRectF &localRect, QRectF *globalRect) const;

    QSvgRectF rect() const

        return m_rect;

    QtSvg::UnitTypes contentUnits() const

        return m_contentUnits;

private:

    QSvgRectF m_rect;

    QtSvg::UnitTypes m_contentUnits;

};

class Q_SVG_EXPORT QSvgPattern : public QSvgStructureNode

public:

    QSvgPattern(QSvgNode *parent, QSvgRectF bounds, QRectF viewBox,

                QtSvg::UnitTypes contentUnits, QTransform transform);

    ~QSvgPattern() override;

    void drawCommand(QPainter *, QSvgExtraStates &) override {};

    bool shouldDrawNode(QPainter *, QSvgExtraStates &) const override;

    QImage patternImage(QPainter *p, QSvgExtraStates &states, const QSvgNode *patternElement);

    Type type() const override;

    const QTransform& appliedTransform() const { return m_appliedTransform; }

    const QTransform &transform() const { return m_transform; }

    const QSvgRectF &rect() const { return m_rect; }

    const QRectF &viewBox() const { return m_viewBox; }

    QtSvg::UnitTypes contentUnits() const { return m_contentUnits; }

private:

    QImage renderPattern(QSize size, std::pair<qreal, qreal> contentScale, const QSvgExtraStates &states);

    void calculateAppliedTransform(QTransform& worldTransform, QRectF peLocalBB, QSize imageSize);

private:

    QTransform m_appliedTransform;

    QSvgRectF m_rect;

    QRectF m_viewBox;

    QtSvg::UnitTypes m_contentUnits;

    mutable bool m_isRendering;

    QTransform m_transform;

};

QT_END_NAMESPACE

#endif // QSVGSTRUCTURE_P_H