Factory methods for heap-allocated SkPathEffect and SkXfermode objects.

include/effects/Sk2DPathEffect.h

 /*
  * 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 Sk2DPathEffect_DEFINED
 #define Sk2DPathEffect_DEFINED
 
 #include "SkPath.h"
 #include "SkPathEffect.h"
 #include "SkMatrix.h"
 
 class SK_API Sk2DPathEffect : public SkPathEffect {
 public:
-    Sk2DPathEffect(const SkMatrix& mat);
+    static Sk2DPathEffect* Create(const SkMatrix& mat) {
+        return SkNEW_ARGS(Sk2DPathEffect, (mat));
+    }
 
     virtual bool filterPath(SkPath*, const SkPath&,
                             SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Sk2DPathEffect)
 
 protected:
     /** New virtual, to be overridden by subclasses.
         This is called once from filterPath, and provides the
         uv parameter bounds for the path. Subsequent calls to
         next() will receive u and v values within these bounds,
         and then a call to end() will signal the end of processing.
     */
     virtual void begin(const SkIRect& uvBounds, SkPath* dst) const;
     virtual void next(const SkPoint& loc, int u, int v, SkPath* dst) const;
     virtual void end(SkPath* dst) const;
 
     /** Low-level virtual called per span of locations in the u-direction.
         The default implementation calls next() repeatedly with each
         location.
     */
     virtual void nextSpan(int u, int v, int ucount, SkPath* dst) const;
 
     const SkMatrix& getMatrix() const { return fMatrix; }
 
     // protected so that subclasses can call this during unflattening
     Sk2DPathEffect(SkReadBuffer&);
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
+#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
+public:
+#endif
+    Sk2DPathEffect(const SkMatrix& mat);
+
 private:
     SkMatrix    fMatrix, fInverse;
     bool        fMatrixIsInvertible;
 
     // illegal
     Sk2DPathEffect(const Sk2DPathEffect&);
     Sk2DPathEffect& operator=(const Sk2DPathEffect&);
 
     friend class Sk2DPathEffectBlitter;
     typedef SkPathEffect INHERITED;
 };
 
 class SK_API SkLine2DPathEffect : public Sk2DPathEffect {
 public:
-    SkLine2DPathEffect(SkScalar width, const SkMatrix& matrix)
-    : Sk2DPathEffect(matrix), fWidth(width) {}
+    static SkLine2DPathEffect* Create(SkScalar width, const SkMatrix& matrix) {
+        return SkNEW_ARGS(SkLine2DPathEffect, (width, matrix));
+    }
 
     virtual bool filterPath(SkPath* dst, const SkPath& src,
                             SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLine2DPathEffect)
 
 protected:
     virtual void nextSpan(int u, int v, int ucount, SkPath*) const SK_OVERRIDE;
 
     SkLine2DPathEffect(SkReadBuffer&);
 
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
+#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
+public:
+#endif
+    SkLine2DPathEffect(SkScalar width, const SkMatrix& matrix)
+    : Sk2DPathEffect(matrix), fWidth(width) {}
+
 private:
     SkScalar fWidth;
 
     typedef Sk2DPathEffect INHERITED;
 };
 
 class SK_API SkPath2DPathEffect : public Sk2DPathEffect {
 public:
     /**
      *  Stamp the specified path to fill the shape, using the matrix to define
      *  the latice.
      */
-    SkPath2DPathEffect(const SkMatrix&, const SkPath&);
+    static SkPath2DPathEffect* Create(const SkMatrix& matrix, const SkPath& path) {
+        return SkNEW_ARGS(SkPath2DPathEffect, (matrix, path));
+    }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPath2DPathEffect)
 
 protected:
     SkPath2DPathEffect(SkReadBuffer& buffer);
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
     virtual void next(const SkPoint&, int u, int v, SkPath*) const SK_OVERRIDE;
 
+#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
+public:
+#endif
+    SkPath2DPathEffect(const SkMatrix&, const SkPath&);
+
 private:
     SkPath  fPath;
 
     typedef Sk2DPathEffect INHERITED;
 };
 
 #endif