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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef NinePatchPeeker_h
     18 #define NinePatchPeeker_h
     19 
     20 #include "SkImageDecoder.h"
     21 #include <utils/ResourceTypes.h>
     22 
     23 using namespace android;
     24 
     25 class NinePatchPeeker : public SkImageDecoder::Peeker {
     26     SkImageDecoder* fHost;
     27 public:
     28     NinePatchPeeker(SkImageDecoder* host) {
     29         // the host lives longer than we do, so a raw ptr is safe
     30         fHost = host;
     31         fPatchIsValid = false;
     32     }
     33 
     34     ~NinePatchPeeker() {
     35         if (fPatchIsValid) {
     36             free(fPatch);
     37         }
     38     }
     39 
     40     bool    fPatchIsValid;
     41     Res_png_9patch*  fPatch;
     42 
     43     virtual bool peek(const char tag[], const void* data, size_t length);
     44 };
     45 
     46 #endif // NinePatchPeeker_h
     47