Factory methods for heap-allocated SkImageFilter objects.

include/effects/SkResizeImageFilter.h

Index: include/effects/SkResizeImageFilter.h
diff --git a/include/effects/SkResizeImageFilter.h b/include/effects/SkResizeImageFilter.h
index 0a8fb14647ce3185b7cbb6e5fc636b9d514f1103..9cb7bf3bb064120cc063be1e84a87c0504234e94 100644
--- a/include/effects/SkResizeImageFilter.h
+++ b/include/effects/SkResizeImageFilter.h
@@ -21,6 +21,8 @@
 
 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.
@@ -28,10 +30,11 @@ public:
      *  @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)
@@ -45,6 +48,12 @@ protected:
     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);

[Stephen White, 2014/03/03 19:48:04]

Note for the future: when we remove the #idef, we should probably remove the
default arguments as well (since the factory fn will always be passing all
args).

[Dominik Grewe, 2014/03/04 10:29:00]

Yes, will do that.

+
 private:
     SkScalar              fSx, fSy;
     SkPaint::FilterLevel  fFilterLevel;