/* * 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 SkDashPathEffect_DEFINED #define SkDashPathEffect_DEFINED #include "SkPathEffect.h" /** \class SkDashPathEffect SkDashPathEffect is a subclass of SkPathEffect that implements dashing */ class SK_API SkDashPathEffect : public SkPathEffect { public: /** intervals: array containing an even number of entries (>=2), with the even indices specifying the length of "on" intervals, and the odd indices specifying the length of "off" intervals. count: number of elements in the intervals array phase: offset into the intervals array (mod the sum of all of the intervals). For example: if intervals[] = {10, 20}, count = 2, and phase = 25, this will set up a dashed path like so: 5 pixels off 10 pixels on 20 pixels off 10 pixels on 20 pixels off ... A phase of -5, 25, 55, 85, etc. would all result in the same path, because the sum of all the intervals is 30. Note: only affects stroked paths. */ static sk_sp<SkPathEffect> Make(const SkScalar intervals[], int count, SkScalar phase); virtual bool filterPath(SkPath* dst, const SkPath& src, SkStrokeRec*, const SkRect*) const override; virtual bool asPoints(PointData* results, const SkPath& src, const SkStrokeRec&, const SkMatrix&, const SkRect*) const override; DashType asADash(DashInfo* info) const override; SK_TO_STRING_OVERRIDE() SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDashPathEffect) #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK bool exposedInAndroidJavaAPI() const override { return true; } #endif protected: ~SkDashPathEffect() override; SkDashPathEffect(const SkScalar intervals[], int count, SkScalar phase); void flatten(SkWriteBuffer&) const override; private: SkScalar* fIntervals; int32_t fCount; SkScalar fPhase; // computed from phase SkScalar fInitialDashLength; int32_t fInitialDashIndex; SkScalar fIntervalLength; typedef SkPathEffect INHERITED; }; #endif