Factory methods for heap-allocated SkImageFilter objects.

include/effects/SkResizeImageFilter.h

 /*
  * Copyright 2013 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 SkResizeImageFilter_DEFINED
 #define SkResizeImageFilter_DEFINED
 
 #include "SkImageFilter.h"
 #include "SkScalar.h"
 #include "SkRect.h"
 #include "SkPoint.h"
 #include "SkPaint.h"
 
 /*! \class SkResizeImageFilter
     Resampling image filter. This filter draws its source image resampled using the given scale
     values.
  */
 
 class SK_API SkResizeImageFilter : public SkImageFilter {
 public:
+    virtual ~SkResizeImageFilter();
+
     /** Construct a (scaling-only) resampling image filter.
      *  @param sx           The x scale parameter to apply when resizing.
      *  @param sy           The y scale parameter to apply when resizing.
      *  @param filterLevel  The quality of filtering to apply when scaling.
      *  @param input        The input image filter.  If NULL, the src bitmap
      *                      passed to filterImage() is used instead.
      */
+    static SkResizeImageFilter* Create(SkScalar sx, SkScalar sy, SkPaint::FilterLevel filterLevel,
+                                       SkImageFilter* input = NULL) {
+        return SkNEW_ARGS(SkResizeImageFilter, (sx, sy, filterLevel, input));
+    }
 
-    SkResizeImageFilter(SkScalar sx, SkScalar sy, SkPaint::FilterLevel filterLevel,
-                        SkImageFilter* input = NULL);
-    virtual ~SkResizeImageFilter();
     virtual void computeFastBounds(const SkRect&, SkRect*) const SK_OVERRIDE;
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkResizeImageFilter)
 
 protected:
     SkResizeImageFilter(SkReadBuffer& buffer);
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
                                SkBitmap* result, SkIPoint* loc) const SK_OVERRIDE;
     virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&,
                                 SkIRect* dst) const SK_OVERRIDE;
 
+#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
+public:
+#endif
+    SkResizeImageFilter(SkScalar sx, SkScalar sy, SkPaint::FilterLevel filterLevel,
+                        SkImageFilter* input = NULL);
+
 private:
     SkScalar              fSx, fSy;
     SkPaint::FilterLevel  fFilterLevel;
     typedef SkImageFilter INHERITED;
 };
 
 #endif