source: trunk/src/gui/painting/qvectorpath_p.h@ 5

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#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/qpaintengine.h>

#include "qpaintengine_p.h"
#include "qstroker_p.h"
#include "qpainter_p.h"


QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)


#define QVECTORPATH_NO_CACHE

struct QRealRect {
    qreal x1, y1, x2, y2;
};

class Q_GUI_EXPORT QVectorPath
{
public:
    enum Hint {
        // Basic shapes...
        LinesHint               = 0x0001, // Just plain lines...
        RectangleHint           = 0x0002,
        ConvexPolygonHint       = 0x0003, // Convex polygon...
        NonISectPolygonHint     = 0x0004, // concave polygon, but not intersecting..
        NonCurvedShapeHint      = 0x0005, // Generic polygon, possibly self-intersecting...
        CurvedShapeHint         = 0x0006, // Generic vector path..
        EllipseHint             = 0x0007,
        ShapeHintMask           = 0x000f,

        // Other hints
        CacheHint               = 0x0100,
        ControlPointRect        = 0x0200, // Set if the control point rect has been calculated...

        // Shape rendering specifiers...
        OddEvenFill             = 0x1000,
        WindingFill             = 0x2000,
        ImplicitClose           = 0x4000,
    };

    // ### Falcon: introduca a struct XY for points so lars is not so confused...
    QVectorPath(const qreal *points,
                int count,
                const QPainterPath::ElementType *elements = 0,
                uint hints = CurvedShapeHint)
        : m_elements(elements),
          m_points(points),
          m_count(count),
          m_hints(hints)
#ifndef QVECTORPATH_NO_CACHE
        , m_cache(0)
#endif
    {
    }

    const QRealRect &controlPointRect() const;

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

    inline bool hasCacheHint() const { return m_hints & CacheHint; }
    inline bool hasImplicitClose() const { return m_hints & ImplicitClose; }
    inline bool hasWindingFill() const { return m_hints & WindingFill; }

    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 == 0; }

    inline int elementCount() const { return m_count; }

    static inline uint polygonFlags(QPaintEngine::PolygonDrawMode mode);

private:
    Q_DISABLE_COPY(QVectorPath)

#ifndef QVECTORPATH_NO_CACHE
    struct CacheEntry {
        void *engine;
        int id;
        void *extra;
        CacheEntry *next;
    };

    void addCacheData(CacheEntry *d) {
        d->next = m_cache;
        m_cache = d;
    }

    CacheEntry *m_cache;
#endif

    const QPainterPath::ElementType *m_elements;
    const qreal *m_points;
    const int m_count;

    mutable uint m_hints;
    mutable QRealRect m_cp_rect;
};

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

QT_END_NAMESPACE

QT_END_HEADER

#endif