Add getRectCount to SkRegtion

src/core/SkRegion.cpp

 
 /*
  * 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.
  */
 
 
 #include "SkRegionPriv.h"
@@ skipping 106 matching lines @@
 SkRegion& SkRegion::operator=(const SkRegion& src) {
     (void)this->setRegion(src);
     return *this;
 }
 
 void SkRegion::swap(SkRegion& other) {
     SkTSwap<SkIRect>(fBounds, other.fBounds);
     SkTSwap<RunHead*>(fRunHead, other.fRunHead);
 }
 
+int SkRegion::computeRegionComplexity() const {
+  if (this->isEmpty()) {
+    return 0;
+  } else if (this->isRect()) {
+    return 1;
+  }
+  return fRunHead->getIntervalCount();
+}
+    
 bool SkRegion::setEmpty() {
     this->freeRuns();
     fBounds.set(0, 0, 0, 0);
     fRunHead = SkRegion_gEmptyRunHeadPtr;
     return false;
 }
 
 bool SkRegion::setRect(int32_t left, int32_t top,
                        int32_t right, int32_t bottom) {
     if (left >= right || top >= bottom) {
@@ skipping 1326 matching lines @@
 bool SkRegion::debugSetRuns(const RunType runs[], int count) {
     // we need to make a copy, since the real method may modify the array, and
     // so it cannot be const.
 
     SkAutoTArray<RunType> storage(count);
     memcpy(storage.get(), runs, count * sizeof(RunType));
     return this->setRuns(storage.get(), count);
 }
 
 #endif