4fee323522
This should let getTypeName() and serialization work even when deserialization factories haven't been registered. I've made getTypeName() pure virtual like getFactory(), and moved all the overrides into SK_FLATTENABLE_HOOKS, cleaning up all the various ways we've done it before. All the subclasses override getTypeName() and getFactory() privately, so there should be no need to document them? Change-Id: I723cb20099d250c2f2a10be266e3aacc6a061937 Reviewed-on: https://skia-review.googlesource.com/c/163543 Reviewed-by: Cary Clark <caryclark@google.com> Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Klein <mtklein@google.com>
82 lines
2.7 KiB
C++
82 lines
2.7 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 Sk1DPathEffect_DEFINED
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#define Sk1DPathEffect_DEFINED
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#include "SkFlattenable.h"
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#include "SkPathEffect.h"
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#include "SkPath.h"
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class SkPathMeasure;
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// This class is not exported to java.
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class SK_API Sk1DPathEffect : public SkPathEffect {
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public:
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protected:
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bool onFilterPath(SkPath* dst, const SkPath& src, SkStrokeRec*, const SkRect*) const override;
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/** Called at the start of each contour, returns the initial offset
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into that contour.
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*/
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virtual SkScalar begin(SkScalar contourLength) const = 0;
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/** Called with the current distance along the path, with the current matrix
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for the point/tangent at the specified distance.
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Return the distance to travel for the next call. If return <= 0, then that
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contour is done.
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*/
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virtual SkScalar next(SkPath* dst, SkScalar dist, SkPathMeasure&) const = 0;
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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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private:
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typedef SkPathEffect INHERITED;
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};
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class SK_API SkPath1DPathEffect : public Sk1DPathEffect {
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public:
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enum Style {
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kTranslate_Style, // translate the shape to each position
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kRotate_Style, // rotate the shape about its center
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kMorph_Style, // transform each point, and turn lines into curves
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kLastEnum_Style = kMorph_Style,
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};
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/** Dash by replicating the specified path.
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@param path The path to replicate (dash)
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@param advance The space between instances of path
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@param phase distance (mod advance) along path for its initial position
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@param style how to transform path at each point (based on the current
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position and tangent)
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*/
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static sk_sp<SkPathEffect> Make(const SkPath& path, SkScalar advance, SkScalar phase, Style);
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protected:
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SkPath1DPathEffect(const SkPath& path, SkScalar advance, SkScalar phase, Style);
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void flatten(SkWriteBuffer&) const override;
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bool onFilterPath(SkPath*, const SkPath&, SkStrokeRec*, const SkRect*) const override;
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// overrides from Sk1DPathEffect
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SkScalar begin(SkScalar contourLength) const override;
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SkScalar next(SkPath*, SkScalar, SkPathMeasure&) const override;
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private:
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SK_FLATTENABLE_HOOKS(SkPath1DPathEffect)
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SkPath fPath; // copied from constructor
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SkScalar fAdvance; // copied from constructor
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SkScalar fInitialOffset; // computed from phase
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Style fStyle; // copied from constructor
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typedef Sk1DPathEffect INHERITED;
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};
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#endif
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