09d9435835
BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4209 Change-Id: I49ae36a9b2bb51a6470638d3264923ff4a4dea0a Reviewed-on: https://skia-review.googlesource.com/4209 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Reed <reed@google.com>
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/*
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* Copyright 2006 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkDashPathEffect_DEFINED
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#define SkDashPathEffect_DEFINED
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#include "SkPathEffect.h"
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/** \class SkDashPathEffect
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SkDashPathEffect is a subclass of SkPathEffect that implements dashing
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*/
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class SK_API SkDashPathEffect : public SkPathEffect {
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public:
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/** intervals: array containing an even number of entries (>=2), with
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the even indices specifying the length of "on" intervals, and the odd
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indices specifying the length of "off" intervals.
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count: number of elements in the intervals array
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phase: offset into the intervals array (mod the sum of all of the
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intervals).
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For example: if intervals[] = {10, 20}, count = 2, and phase = 25,
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this will set up a dashed path like so:
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5 pixels off
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10 pixels on
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20 pixels off
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10 pixels on
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20 pixels off
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...
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A phase of -5, 25, 55, 85, etc. would all result in the same path,
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because the sum of all the intervals is 30.
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Note: only affects stroked paths.
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*/
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static sk_sp<SkPathEffect> Make(const SkScalar intervals[], int count, SkScalar phase);
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virtual bool filterPath(SkPath* dst, const SkPath& src,
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SkStrokeRec*, const SkRect*) const override;
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virtual bool asPoints(PointData* results, const SkPath& src,
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const SkStrokeRec&, const SkMatrix&,
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const SkRect*) const override;
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DashType asADash(DashInfo* info) const override;
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SK_TO_STRING_OVERRIDE()
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDashPathEffect)
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#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
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bool exposedInAndroidJavaAPI() const override { return true; }
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#endif
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protected:
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virtual ~SkDashPathEffect();
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SkDashPathEffect(const SkScalar intervals[], int count, SkScalar phase);
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void flatten(SkWriteBuffer&) const override;
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private:
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SkScalar* fIntervals;
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int32_t fCount;
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SkScalar fPhase;
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// computed from phase
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SkScalar fInitialDashLength;
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int32_t fInitialDashIndex;
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SkScalar fIntervalLength;
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typedef SkPathEffect INHERITED;
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};
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#endif
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