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* Copyright 2006 The Android Open Source Project
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef Sk2DPathEffect_DEFINED
#define Sk2DPathEffect_DEFINED
#include "include/core/SkFlattenable.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPath.h"
#include "include/core/SkPathEffect.h"
class SK_API Sk2DPathEffect : public SkPathEffect {
/** 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.
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;
/** Low-level virtual called per span of locations in the u-direction.
The default implementation calls next() repeatedly with each
virtual void nextSpan(int u, int v, int ucount, SkPath* dst) const;
const SkMatrix& getMatrix() const { return fMatrix; }
// protected so that subclasses can call this during unflattening
explicit Sk2DPathEffect(const SkMatrix& mat);
void flatten(SkWriteBuffer&) const override;
bool onFilterPath(SkPath*, const SkPath&, SkStrokeRec*, const SkRect*) const override;
SkMatrix fMatrix, fInverse;
bool fMatrixIsInvertible;
// illegal
Sk2DPathEffect(const Sk2DPathEffect&);
Sk2DPathEffect& operator=(const Sk2DPathEffect&);
friend class Sk2DPathEffectBlitter;
typedef SkPathEffect INHERITED;
class SK_API SkLine2DPathEffect : public Sk2DPathEffect {
static sk_sp<SkPathEffect> Make(SkScalar width, const SkMatrix& matrix) {
if (!(width >= 0)) {
return nullptr;
return sk_sp<SkPathEffect>(new SkLine2DPathEffect(width, matrix));
SkLine2DPathEffect(SkScalar width, const SkMatrix& matrix)
: Sk2DPathEffect(matrix), fWidth(width) {
SkASSERT(width >= 0);
void flatten(SkWriteBuffer&) const override;
bool onFilterPath(SkPath* dst, const SkPath& src, SkStrokeRec*, const SkRect*) const override;
void nextSpan(int u, int v, int ucount, SkPath*) const override;
SkScalar fWidth;
typedef Sk2DPathEffect INHERITED;
class SK_API SkPath2DPathEffect : public Sk2DPathEffect {
* Stamp the specified path to fill the shape, using the matrix to define
* the latice.
static sk_sp<SkPathEffect> Make(const SkMatrix& matrix, const SkPath& path) {
return sk_sp<SkPathEffect>(new SkPath2DPathEffect(matrix, path));
SkPath2DPathEffect(const SkMatrix&, const SkPath&);
void flatten(SkWriteBuffer&) const override;
void next(const SkPoint&, int u, int v, SkPath*) const override;
SkPath fPath;
typedef Sk2DPathEffect INHERITED;