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 _ANDROID_GRAPHICS_NINE_PATCH_PEEKER_H_
18 #define _ANDROID_GRAPHICS_NINE_PATCH_PEEKER_H_
19 
20 #include "SkImageDecoder.h"
21 #include <androidfw/ResourceTypes.h>
22 
23 using namespace android;
24 
25 class NinePatchPeeker : public SkImageDecoder::Peeker {
26 private:
27     // the host lives longer than we do, so a raw ptr is safe
28     SkImageDecoder* mHost;
29 public:
NinePatchPeeker(SkImageDecoder * host)30     NinePatchPeeker(SkImageDecoder* host)
31             : mHost(host)
32             , mPatch(NULL)
33             , mPatchSize(0)
34             , mHasInsets(false)
35             , mOutlineRadius(0)
36             , mOutlineAlpha(0) {
37         memset(mOpticalInsets, 0, 4 * sizeof(int32_t));
38         memset(mOutlineInsets, 0, 4 * sizeof(int32_t));
39     }
40 
~NinePatchPeeker()41     ~NinePatchPeeker() {
42         free(mPatch);
43     }
44 
45     virtual bool peek(const char tag[], const void* data, size_t length);
46 
47     Res_png_9patch* mPatch;
48     size_t mPatchSize;
49     bool mHasInsets;
50     int32_t mOpticalInsets[4];
51     int32_t mOutlineInsets[4];
52     float mOutlineRadius;
53     uint8_t mOutlineAlpha;
54 };
55 
56 #endif  // _ANDROID_GRAPHICS_NINE_PATCH_PEEKER_H_
57