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 #include "NinePatchPeeker.h"
18
19 #include "SkBitmap.h"
20
21 using namespace android;
22
peek(const char tag[],const void * data,size_t length)23 bool NinePatchPeeker::peek(const char tag[], const void* data, size_t length) {
24 if (strcmp("npTc", tag) == 0 && length >= sizeof(Res_png_9patch)) {
25 Res_png_9patch* patch = (Res_png_9patch*) data;
26 size_t patchSize = patch->serializedSize();
27 assert(length == patchSize);
28 // You have to copy the data because it is owned by the png reader
29 Res_png_9patch* patchNew = (Res_png_9patch*) malloc(patchSize);
30 memcpy(patchNew, patch, patchSize);
31 // this relies on deserialization being done in place
32 Res_png_9patch::deserialize(patchNew);
33 patchNew->fileToDevice();
34 free(fPatch);
35 fPatch = patchNew;
36 //printf("9patch: (%d,%d)-(%d,%d)\n",
37 // fPatch.sizeLeft, fPatch.sizeTop,
38 // fPatch.sizeRight, fPatch.sizeBottom);
39
40 // now update our host to force index or 32bit config
41 // 'cause we don't want 565 predithered, since as a 9patch, we know
42 // we will be stretched, and therefore we want to dither afterwards.
43 static const SkBitmap::Config gNo565Pref[] = {
44 SkBitmap::kIndex8_Config,
45 SkBitmap::kIndex8_Config,
46 SkBitmap::kARGB_8888_Config,
47 SkBitmap::kARGB_8888_Config,
48 SkBitmap::kARGB_8888_Config,
49 SkBitmap::kARGB_8888_Config,
50 };
51 fHost->setPrefConfigTable(gNo565Pref);
52 } else if (strcmp("npLb", tag) == 0 && length == sizeof(int) * 4) {
53 fLayoutBounds = new int[4];
54 memcpy(fLayoutBounds, data, sizeof(int) * 4);
55 }
56 return true; // keep on decoding
57 }
58