Sk1DPathEffect Class Reference

Inheritance diagram for Sk1DPathEffect:

Protected Member Functions
bool	onFilterPath (SkPath *dst, const SkPath &src, SkStrokeRec *, const SkRect *, const SkMatrix &) const override
virtual SkScalar	begin (SkScalar contourLength) const =0
virtual SkScalar	next (SkPath *dst, SkScalar dist, SkPathMeasure &) const =0

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 &)
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	onFilterPath (SkPath *, const SkPath &, SkStrokeRec *, const SkRect *, const SkMatrix &) const =0
virtual bool	onNeedsCTM () const
virtual bool	onAsPoints (PointData *, const SkPath &, const SkStrokeRec &, const SkMatrix &, const SkRect *) const
virtual DashType	onAsADash (DashInfo *) const
virtual bool	computeFastBounds (SkRect *bounds) const =0
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
virtual void	flatten (SkWriteBuffer &) const
virtual Type	getFlattenableType () 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
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 31 of file Sk1DPathEffect.cpp.

Member Function Documentation

begin()

virtual SkScalar Sk1DPathEffect::begin ( SkScalar  contourLength ) const

protectedpure virtual

Called at the start of each contour, returns the initial offset into that contour.

Implemented in SkPath1DPathEffectImpl.

next()

virtual SkScalar Sk1DPathEffect::next ( SkPath *  dst, SkScalar  dist, SkPathMeasure &    ) const

protectedpure virtual

Called with the current distance along the path, with the current matrix for the point/tangent at the specified distance. Return the distance to travel for the next call. If return <= 0, then that contour is done.

Implemented in SkPath1DPathEffectImpl.

onFilterPath()

bool Sk1DPathEffect::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 SkPath1DPathEffectImpl.

Definition at line 34 of file Sk1DPathEffect.cpp.

                                                      {
        SkPathMeasure   meas(src, false);
        do {
            int governor = MAX_REASONABLE_ITERATIONS;
            SkScalar    length = meas.getLength();
            SkScalar    distance = this->begin(length);
            while (distance < length && --governor >= 0) {
                SkScalar delta = this->next(dst, distance, meas);
                if (delta <= 0) {
                    break;
                }
                distance += delta;
            }
            if (governor < 0) {
                return false;
            }
        } while (meas.nextContour());
        return true;
    }

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

• third_party/skia/src/effects/Sk1DPathEffect.cpp