0a2bf90dcc
This is part of an effort to ensure that all SkPaint effects can only be allocated on the heap. This patch makes the constructors of SkPathEffect, SkXfermode and their subclasses non-public and instead provides factory methods for creating these objects on the heap. We temporarily keep the constructors of the following classes public to not break Chrome/Blink: SkXfermode SkCornerPathEffect SkDashPathEffect BUG=skia:2187 R=scroggo@google.com, reed@google.com, mtklein@google.com, bungeman@google.com Author: dominikg@chromium.org Review URL: https://codereview.chromium.org/166583002 git-svn-id: http://skia.googlecode.com/svn/trunk@13519 2bbb7eff-a529-9590-31e7-b0007b416f81
126 lines
3.6 KiB
C++
126 lines
3.6 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 Sk2DPathEffect_DEFINED
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#define Sk2DPathEffect_DEFINED
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#include "SkPath.h"
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#include "SkPathEffect.h"
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#include "SkMatrix.h"
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class SK_API Sk2DPathEffect : public SkPathEffect {
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public:
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static Sk2DPathEffect* Create(const SkMatrix& mat) {
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return SkNEW_ARGS(Sk2DPathEffect, (mat));
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}
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virtual bool filterPath(SkPath*, const SkPath&,
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SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Sk2DPathEffect)
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protected:
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/** New virtual, to be overridden by subclasses.
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This is called once from filterPath, and provides the
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uv parameter bounds for the path. Subsequent calls to
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next() will receive u and v values within these bounds,
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and then a call to end() will signal the end of processing.
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*/
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virtual void begin(const SkIRect& uvBounds, SkPath* dst) const;
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virtual void next(const SkPoint& loc, int u, int v, SkPath* dst) const;
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virtual void end(SkPath* dst) const;
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/** Low-level virtual called per span of locations in the u-direction.
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The default implementation calls next() repeatedly with each
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location.
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*/
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virtual void nextSpan(int u, int v, int ucount, SkPath* dst) const;
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const SkMatrix& getMatrix() const { return fMatrix; }
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// protected so that subclasses can call this during unflattening
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Sk2DPathEffect(SkReadBuffer&);
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virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
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#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
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public:
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#endif
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Sk2DPathEffect(const SkMatrix& mat);
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private:
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SkMatrix fMatrix, fInverse;
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bool fMatrixIsInvertible;
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// illegal
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Sk2DPathEffect(const Sk2DPathEffect&);
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Sk2DPathEffect& operator=(const Sk2DPathEffect&);
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friend class Sk2DPathEffectBlitter;
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typedef SkPathEffect INHERITED;
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};
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class SK_API SkLine2DPathEffect : public Sk2DPathEffect {
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public:
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static SkLine2DPathEffect* Create(SkScalar width, const SkMatrix& matrix) {
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return SkNEW_ARGS(SkLine2DPathEffect, (width, matrix));
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}
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virtual bool filterPath(SkPath* dst, const SkPath& src,
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SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLine2DPathEffect)
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protected:
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virtual void nextSpan(int u, int v, int ucount, SkPath*) const SK_OVERRIDE;
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SkLine2DPathEffect(SkReadBuffer&);
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virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
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#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
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public:
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#endif
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SkLine2DPathEffect(SkScalar width, const SkMatrix& matrix)
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: Sk2DPathEffect(matrix), fWidth(width) {}
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private:
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SkScalar fWidth;
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typedef Sk2DPathEffect INHERITED;
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};
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class SK_API SkPath2DPathEffect : public Sk2DPathEffect {
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public:
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/**
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* Stamp the specified path to fill the shape, using the matrix to define
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* the latice.
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*/
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static SkPath2DPathEffect* Create(const SkMatrix& matrix, const SkPath& path) {
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return SkNEW_ARGS(SkPath2DPathEffect, (matrix, path));
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}
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPath2DPathEffect)
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protected:
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SkPath2DPathEffect(SkReadBuffer& buffer);
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virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
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virtual void next(const SkPoint&, int u, int v, SkPath*) const SK_OVERRIDE;
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#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
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public:
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#endif
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SkPath2DPathEffect(const SkMatrix&, const SkPath&);
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private:
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SkPath fPath;
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typedef Sk2DPathEffect INHERITED;
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};
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#endif
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