20bf4ca8f5
Review URL: https://codereview.appspot.com/6124048 git-svn-id: http://skia.googlecode.com/svn/trunk@3773 2bbb7eff-a529-9590-31e7-b0007b416f81
71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
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/*
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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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SkDashPathEffect(const SkScalar intervals[], int count, SkScalar phase, bool scaleToFit = false);
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virtual ~SkDashPathEffect();
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// overrides for SkPathEffect
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// This method is not exported to java.
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virtual bool filterPath(SkPath* dst, const SkPath& src, SkScalar* width);
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// overrides for SkFlattenable
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// This method is not exported to java.
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virtual Factory getFactory();
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static SkFlattenable* CreateProc(SkFlattenableReadBuffer&);
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protected:
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SkDashPathEffect(SkFlattenableReadBuffer&);
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virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
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private:
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SkScalar* fIntervals;
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int32_t fCount;
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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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bool fScaleToFit;
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typedef SkPathEffect INHERITED;
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};
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#endif
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