expose api to count the number of ops in a picture

src/core/SkPicture.cpp

 
 /*
  * Copyright 2007 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 "SkPictureFlat.h"
@@ skipping 155 matching lines @@
     int32_t id = sk_atomic_inc(&gNextID);
     if (id >= 1 << (8 * sizeof(Domain))) {
         SK_CRASH();
     }
 
     return static_cast<Domain>(id);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
+int SkPicture::countOps() const {
+    if (fRecord.get()) {
+        return fRecord->count();
+    } else if (fData.get()) {
+        return fData->countOps();
+    } else {
+        return 0;
+    }
+}
+
 uint32_t SkPicture::OperationList::offset(int index) const {
     SkASSERT(index < fOps.count());
     return ((SkPictureStateTree::Draw*)fOps[index])->fOffset;
 }
 
 const SkMatrix& SkPicture::OperationList::matrix(int index) const {
     SkASSERT(index < fOps.count());
     return *((SkPictureStateTree::Draw*)fOps[index])->fMatrix;
 }
 
@@ skipping 262 matching lines @@
     *fDeletionListeners.append() = SkRef(listener);
 }
 
 void SkPicture::callDeletionListeners() {
     for (int i = 0; i < fDeletionListeners.count(); ++i) {
         fDeletionListeners[i]->onDeletion(this->uniqueID());
     }
 
     fDeletionListeners.unrefAll();
 }