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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/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] |
| ); |
| } |
| |
| 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 |
