Sk2DPathEffect Class Reference

Inheritance diagram for Sk2DPathEffect:

Public Member Functions
	Sk2DPathEffect (const SkMatrix &mat)
Public Member Functions inherited from SkPathEffectBase
	SkPathEffectBase ()
bool	asPoints (PointData *results, const SkPath &src, const SkStrokeRec &, const SkMatrix &, const SkRect *cullR) const
SkFlattenable::Type	getFlattenableType () const override
virtual bool	onNeedsCTM () const
virtual bool	onAsPoints (PointData *, const SkPath &, const SkStrokeRec &, const SkMatrix &, const SkRect *) const
virtual DashType	onAsADash (DashInfo *) const
Public Member Functions inherited from SkPathEffect
DashType	asADash (DashInfo *info) const
bool	filterPath (SkPath *dst, const SkPath &src, SkStrokeRec *, const SkRect *cullR) const
bool	filterPath (SkPath *dst, const SkPath &src, SkStrokeRec *, const SkRect *cullR, const SkMatrix &ctm) const
bool	needsCTM () const
Public Member Functions inherited from SkFlattenable
	SkFlattenable ()
virtual Factory	getFactory () const =0
virtual const char *	getTypeName () const =0
sk_sp< SkData >	serialize (const SkSerialProcs *=nullptr) const
size_t	serialize (void *memory, size_t memory_size, const SkSerialProcs *=nullptr) const
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Protected Member Functions
virtual void	begin (const SkIRect &uvBounds, SkPath *dst) const
virtual void	next (const SkPoint &loc, int u, int v, SkPath *dst) const
virtual void	end (SkPath *dst) const
virtual void	nextSpan (int x, int y, int ucount, SkPath *path) const
const SkMatrix &	getMatrix () const
void	flatten (SkWriteBuffer &buffer) const override
bool	onFilterPath (SkPath *dst, const SkPath &src, SkStrokeRec *rec, const SkRect *cullRect, const SkMatrix &) const override

Private Member Functions
bool	computeFastBounds (SkRect *) const override

Friends
class	Sk2DPathEffectBlitter

Additional Inherited Members
Public Types inherited from SkPathEffect
enum	DashType { kNone_DashType , kDash_DashType }
Public Types inherited from SkFlattenable
enum	Type {   kSkColorFilter_Type , kSkBlender_Type , kSkDrawable_Type , kSkDrawLooper_Type ,   kSkImageFilter_Type , kSkMaskFilter_Type , kSkPathEffect_Type , kSkShader_Type }
typedef sk_sp< SkFlattenable >(*	Factory) (SkReadBuffer &)
Static Public Member Functions inherited from SkPathEffectBase
static sk_sp< SkPathEffect >	Deserialize (const void *data, size_t size, const SkDeserialProcs *procs=nullptr)
static void	RegisterFlattenables ()
Static Public Member Functions inherited from SkPathEffect
static sk_sp< SkPathEffect >	MakeSum (sk_sp< SkPathEffect > first, sk_sp< SkPathEffect > second)
static sk_sp< SkPathEffect >	MakeCompose (sk_sp< SkPathEffect > outer, sk_sp< SkPathEffect > inner)
static SkFlattenable::Type	GetFlattenableType ()
static sk_sp< SkPathEffect >	Deserialize (const void *data, size_t size, const SkDeserialProcs *procs=nullptr)
Static Public Member Functions inherited from SkFlattenable
static Factory	NameToFactory (const char name[])
static const char *	FactoryToName (Factory)
static void	Register (const char name[], Factory)
static sk_sp< SkFlattenable >	Deserialize (Type, const void *data, size_t length, const SkDeserialProcs *procs=nullptr)

Detailed Description

Definition at line 25 of file Sk2DPathEffect.cpp.

Constructor & Destructor Documentation

Sk2DPathEffect()

Sk2DPathEffect::Sk2DPathEffect ( const SkMatrix &  mat )

inline

Definition at line 27 of file Sk2DPathEffect.cpp.

                                        : fMatrix(mat) {
        // Calling invert will set the type mask on both matrices, making them thread safe.
        fMatrixIsInvertible = fMatrix.invert(&fInverse);
    }

Member Function Documentation

begin()

virtual void Sk2DPathEffect::begin ( const SkIRect &  uvBounds, SkPath *  dst  ) const

inlineprotectedvirtual

New virtual, to be overridden by subclasses. This is called once from filterPath, and provides the uv parameter bounds for the path. Subsequent calls to next() will receive u and v values within these bounds, and then a call to end() will signal the end of processing.

Definition at line 39 of file Sk2DPathEffect.cpp.

{}

computeFastBounds()

bool Sk2DPathEffect::computeFastBounds ( SkRect *  ) const

inlineoverrideprivatevirtual

Implements SkPathEffectBase.

Definition at line 113 of file Sk2DPathEffect.cpp.

{ return false; }

end()

virtual void Sk2DPathEffect::end ( SkPath *  dst ) const

inlineprotectedvirtual

Definition at line 41 of file Sk2DPathEffect.cpp.

{}

flatten()

void Sk2DPathEffect::flatten ( SkWriteBuffer &  ) const

inlineoverrideprotectedvirtual

Override this if your subclass needs to record data that it will need to recreate itself from its CreateProc (returned by getFactory()).

DEPRECATED public : will move to protected ... use serialize() instead

Reimplemented from SkFlattenable.

Reimplemented in SkLine2DPathEffectImpl, and SkPath2DPathEffectImpl.

Definition at line 70 of file Sk2DPathEffect.cpp.

                                                       {
        buffer.writeMatrix(fMatrix);
    }

getMatrix()

const SkMatrix & Sk2DPathEffect::getMatrix ( ) const

inlineprotected

Definition at line 68 of file Sk2DPathEffect.cpp.

{ return fMatrix; }

next()

virtual void Sk2DPathEffect::next ( const SkPoint &  loc, int  u, int  v, SkPath *  dst  ) const

inlineprotectedvirtual

Reimplemented in SkPath2DPathEffectImpl.

Definition at line 40 of file Sk2DPathEffect.cpp.

{}

nextSpan()

virtual void Sk2DPathEffect::nextSpan ( int  x, int  y, int  ucount, SkPath *  path  ) const

inlineprotectedvirtual

Low-level virtual called per span of locations in the u-direction. The default implementation calls next() repeatedly with each location.

Reimplemented in SkLine2DPathEffectImpl.

Definition at line 47 of file Sk2DPathEffect.cpp.

                                                                        {
        if (!fMatrixIsInvertible) {
            return;
        }
    #if defined(SK_BUILD_FOR_FUZZER)
        if (ucount > 100) {
            return;
        }
    #endif
 
        const SkMatrix& mat = this->getMatrix();
        SkPoint src, dst;
 
        src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf);
        do {
            mat.mapPoints(&dst, &src, 1);
            this->next(dst, x++, y, path);
            src.fX += SK_Scalar1;
        } while (--ucount > 0);
    }

onFilterPath()

bool Sk2DPathEffect::onFilterPath ( SkPath *  , const SkPath &  , SkStrokeRec *  , const SkRect *  , const SkMatrix &    ) const

inlineoverrideprotectedvirtual

Filter the input path.

The CTM parameter is provided for path effects that can use the information. The output of path effects must always be in the original (input) coordinate system, regardless of whether the path effect uses the CTM or not.

Implements SkPathEffectBase.

Reimplemented in SkLine2DPathEffectImpl.

Definition at line 74 of file Sk2DPathEffect.cpp.

                                                                              {
        if (!fMatrixIsInvertible) {
            return false;
        }
 
        SkPath  tmp;
        SkIRect ir;
 
        src.transform(fInverse, &tmp);
        tmp.getBounds().round(&ir);
        if (!ir.isEmpty()) {
            this->begin(ir, dst);
 
            SkRegion rgn;
            rgn.setPath(tmp, SkRegion(ir));
            SkRegion::Iterator iter(rgn);
            for (; !iter.done(); iter.next()) {
                const SkIRect& rect = iter.rect();
#if defined(SK_BUILD_FOR_FUZZER)
                if (rect.height() > 100) {
                    continue;
                }
#endif
                for (int y = rect.fTop; y < rect.fBottom; ++y) {
                    this->nextSpan(rect.fLeft, y, rect.width(), dst);
                }
            }
 
            this->end(dst);
        }
        return true;
    }

Friends And Related Symbol Documentation

Sk2DPathEffectBlitter

friend class Sk2DPathEffectBlitter

friend

Definition at line 115 of file Sk2DPathEffect.cpp.

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The documentation for this class was generated from the following file:

• third_party/skia/src/effects/Sk2DPathEffect.cpp