Change SkImageFilter's cropRect from SkIRect to a CropRect struct

include/core/SkRect.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 SkRect_DEFINED
@@ skipping 353 matching lines @@
 */
 struct SK_API SkRect {
     SkScalar    fLeft, fTop, fRight, fBottom;
 
     static SkRect SK_WARN_UNUSED_RESULT MakeEmpty() {
         SkRect r;
         r.setEmpty();
         return r;
     }
 
+    static SkRect SK_WARN_UNUSED_RESULT MakeLargest() {
+        SkRect r;
+        r.setLargest();
+        return r;
+    }
+
     static SkRect SK_WARN_UNUSED_RESULT MakeWH(SkScalar w, SkScalar h) {
         SkRect r;
         r.set(0, 0, w, h);
         return r;
     }
 
     static SkRect SK_WARN_UNUSED_RESULT MakeSize(const SkSize& size) {
         SkRect r;
         r.set(0, 0, size.width(), size.height());
         return r;
@@ skipping 28 matching lines @@
               SkIntToScalar(irect.fRight),
               SkIntToScalar(irect.fBottom));
         return r;
     }
 
     /**
      *  Return true if the rectangle's width or height are <= 0
      */
     bool isEmpty() const { return fLeft >= fRight || fTop >= fBottom; }
 
+    bool isLargest() const { return SK_ScalarMin == fLeft &&
+                                    SK_ScalarMin == fTop &&
+                                    SK_ScalarMax == fRight &&
+                                    SK_ScalarMax == fBottom; }
+
     /**
      *  Returns true iff all values in the rect are finite. If any are
      *  infinite or NaN (or SK_FixedNaN when SkScalar is fixed) then this
      *  returns false.
      */
     bool isFinite() const {
 #ifdef SK_SCALAR_IS_FLOAT
         float accum = 0;
         accum *= fLeft;
         accum *= fTop;
@@ skipping 365 matching lines @@
      */
     void sort();
 
     /**
      *  cast-safe way to treat the rect as an array of (4) SkScalars.
      */
     const SkScalar* asScalars() const { return &fLeft; }
 };
 
 #endif