// 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 QVECTORPATH_P_H

#define QVECTORPATH_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 <QtGui/private/qtguiglobal_p.h>

#include <QtGui/qpaintengine.h>

#include <private/qpaintengine_p.h>

#include <private/qstroker_p.h>

#include <private/qpainter_p.h>

QT_BEGIN_NAMESPACE

class QPaintEngineEx;

typedef void (*qvectorpath_cache_cleanup)(QPaintEngineEx *engine, void *data);

struct QRealRect {

    qreal x1, y1, x2, y2;

};

class Q_GUI_EXPORT QVectorPath

{

public:

    enum Hint {

        // Shape hints, in 0x000000ff, access using shape()

        AreaShapeMask           = 0x0001,       // shape covers an area

        NonConvexShapeMask      = 0x0002,       // shape is not convex

        CurvedShapeMask         = 0x0004,       // shape contains curves...

        LinesShapeMask          = 0x0008,

        RectangleShapeMask      = 0x0010,

        ShapeMask               = 0x001f,

        // Shape hints merged into basic shapes..

        LinesHint               = LinesShapeMask,

        RectangleHint           = AreaShapeMask | RectangleShapeMask,

        EllipseHint             = AreaShapeMask | CurvedShapeMask,

        ConvexPolygonHint       = AreaShapeMask,

        PolygonHint             = AreaShapeMask | NonConvexShapeMask,

        RoundedRectHint         = AreaShapeMask | CurvedShapeMask,

        ArbitraryShapeHint      = AreaShapeMask | NonConvexShapeMask | CurvedShapeMask,

        // Other hints

        IsCachedHint            = 0x0100, // Set if the cache hint is set

        ShouldUseCacheHint      = 0x0200, // Set if the path should be cached when possible..

        ControlPointRect        = 0x0400, // Set if the control point rect has been calculated...

        // Shape rendering specifiers...

        OddEvenFill             = 0x1000,

        WindingFill             = 0x2000,

        ImplicitClose           = 0x4000,

        ExplicitOpen            = 0x8000

    };

    // ### Falcon: introduca a struct XY for points so lars is not so confused...

    QVectorPath(const qreal *points,

                int count,

                const QPainterPath::ElementType *elements = nullptr,

                uint hints = ArbitraryShapeHint)

        : m_elements(elements),

          m_points(points),

          m_count(count),

          m_hints(hints)

    {

    }

    ~QVectorPath();

    QRectF controlPointRect() const;

    inline Hint shape() const { return (Hint) (m_hints & ShapeMask); }

    inline bool isConvex() const { return (m_hints & NonConvexShapeMask) == 0; }

    inline bool isCurved() const { return m_hints & CurvedShapeMask; }

    inline bool isCacheable() const { return m_hints & ShouldUseCacheHint; }

    inline bool hasImplicitClose() const { return m_hints & ImplicitClose; }

    inline bool hasExplicitOpen() const { return m_hints & ExplicitOpen; }

    inline bool hasWindingFill() const { return m_hints & WindingFill; }

    inline void makeCacheable() const { m_hints |= ShouldUseCacheHint; m_cache = nullptr; }

    inline uint hints() const { return m_hints; }

    inline const QPainterPath::ElementType *elements() const { return m_elements; }

    inline const qreal *points() const { return m_points; }

    inline bool isEmpty() const { return m_points == nullptr; }

    inline int elementCount() const { return m_count; }

    inline const QPainterPath convertToPainterPath() const;

    static inline uint polygonFlags(QPaintEngine::PolygonDrawMode mode)

    {

        switch (mode) {

        case QPaintEngine::ConvexMode: return ConvexPolygonHint | ImplicitClose;

        case QPaintEngine::OddEvenMode: return PolygonHint | OddEvenFill | ImplicitClose;

        case QPaintEngine::WindingMode: return PolygonHint | WindingFill | ImplicitClose;

        case QPaintEngine::PolylineMode: return PolygonHint | ExplicitOpen;

        default: return 0;

        }

    }

    struct CacheEntry {

        QPaintEngineEx *engine;

        void *data;

        qvectorpath_cache_cleanup cleanup;

        CacheEntry *next;

    };

    CacheEntry *addCacheData(QPaintEngineEx *engine, void *data, qvectorpath_cache_cleanup cleanup) const;

    inline CacheEntry *lookupCacheData(QPaintEngineEx *engine) const {

        Q_ASSERT(m_hints & ShouldUseCacheHint);

        CacheEntry *e = m_cache;

        while (e) {

            if (e->engine == engine)

                return e;

            e = e->next;

        }

        return nullptr;

    }

    template <typename T> static inline bool isRect(const T *pts, int elementCount) {

        return (elementCount == 5 // 5-point polygon, check for closed rect

                && pts[0] == pts[8] && pts[1] == pts[9] // last point == first point

                && pts[0] == pts[6] && pts[2] == pts[4] // x values equal

                && pts[1] == pts[3] && pts[5] == pts[7] // y values equal...

                && pts[0] < pts[4] && pts[1] < pts[5]

                ) ||

               (elementCount == 4 // 4-point polygon, check for unclosed rect

                && pts[0] == pts[6] && pts[2] == pts[4] // x values equal

                && pts[1] == pts[3] && pts[5] == pts[7] // y values equal...

                && pts[0] < pts[4] && pts[1] < pts[5]

                );

    }

Unexecuted instantiation: bool QVectorPath::isRect<double>(double const*, int)

Unexecuted instantiation: bool QVectorPath::isRect<int>(int const*, int)

    inline bool isRect() const

    {

        const QPainterPath::ElementType * const types = elements();

        return (shape() == QVectorPath::RectangleHint)

                || (isRect(points(), elementCount())

                    && (!types || (types[0] == QPainterPath::MoveToElement

                                   && types[1] == QPainterPath::LineToElement

                                   && types[2] == QPainterPath::LineToElement

                                   && types[3] == QPainterPath::LineToElement)));

    }

private:

    Q_DISABLE_COPY_MOVE(QVectorPath)

    const QPainterPath::ElementType *m_elements;

    const qreal *m_points;

    const int m_count;

    mutable uint m_hints;

    mutable QRealRect m_cp_rect;

    mutable CacheEntry *m_cache;

};

Q_GUI_EXPORT const QVectorPath &qtVectorPathForPath(const QPainterPath &path);

QT_END_NAMESPACE

#endif