more tests for offsetimagefilter

include/core/SkImageFilter.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkImageFilter_DEFINED
 #define SkImageFilter_DEFINED
 
@@ skipping 174 matching lines @@
      *  rect is set at construction time, and determines which pixels from the
      *  input image will be processed. The size of the crop rect should be
      *  used as the size of the destination image. The origin of this rect
      *  should be used to offset access to the input images, and should also
      *  be added to the "offset" parameter in onFilterImage and
      *  filterImageGPU(). (The latter ensures that the resulting buffer is
      *  drawn in the correct location.)
      */
     bool cropRectIsSet() const { return fCropRect.flags() != 0x0; }
 
+    CropRect getCropRect() const { return fCropRect; }
+
     // Default impl returns union of all input bounds.
     virtual void computeFastBounds(const SkRect&, SkRect*) const;
 
     /**
      * Create an SkMatrixImageFilter, which transforms its input by the given matrix.
      */
     static SkImageFilter* CreateMatrixFilter(const SkMatrix& matrix,
                                              SkFilterQuality,
                                              SkImageFilter* input = NULL);
 
@@ skipping 157 matching lines @@
  */
 #define SK_IMAGEFILTER_UNFLATTEN_COMMON(localVar, expectedCount)    \
     Common localVar;                                                \
     do {                                                            \
         if (!localVar.unflatten(buffer, expectedCount)) {           \
             return NULL;                                            \
         }                                                           \
     } while (0)
 
 #endif