SkPathEffect.h

Go to the documentation of this file.

/*
 * 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 SkPathEffect_DEFINED
#define SkPathEffect_DEFINED
 
#include "include/core/SkFlattenable.h"
#include "include/core/SkScalar.h"
// not needed, but some of our clients need it (they don't IWYU)
#include "include/core/SkPath.h"
 
class SkPath;
struct SkRect;
class SkStrokeRec;
 
class SK_API SkPathEffect : public SkFlattenable {
public:
    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() {
        return kSkPathEffect_Type;
    }
 
    // move to base?
 
    enum DashType {
        kNone_DashType, 
        kDash_DashType, 
    };
 
    struct DashInfo {
        DashInfo() : fIntervals(nullptr), fCount(0), fPhase(0) {}
        DashInfo(SkScalar* intervals, int32_t count, SkScalar phase)
            : fIntervals(intervals), fCount(count), fPhase(phase) {}
 
        SkScalar*   fIntervals;         
                                        //   Even values represent ons, and odds offs
        int32_t     fCount;             
        SkScalar    fPhase;             
                                        //   mod the sum of all intervals
    };
 
    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;
 
    static sk_sp<SkPathEffect> Deserialize(const void* data, size_t size,
                                           const SkDeserialProcs* procs = nullptr);
 
private:
    SkPathEffect() = default;
    friend class SkPathEffectBase;
 
    using INHERITED = SkFlattenable;
};
 
#endif