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 #include "SkImageDecoder.h" 21 22 using namespace android; 23 24 bool NinePatchPeeker::readChunk(const char tag[], const void* data, size_t length) { 25 if (!strcmp("npTc", tag) && length >= sizeof(Res_png_9patch)) { 26 Res_png_9patch* patch = (Res_png_9patch*) data; 27 size_t patchSize = patch->serializedSize(); 28 if (length != patchSize) { 29 return false; 30 } 31 // You have to copy the data because it is owned by the png reader 32 Res_png_9patch* patchNew = (Res_png_9patch*) malloc(patchSize); 33 memcpy(patchNew, patch, patchSize); 34 Res_png_9patch::deserialize(patchNew); 35 patchNew->fileToDevice(); 36 free(mPatch); 37 mPatch = patchNew; 38 mPatchSize = patchSize; 39 } else if (!strcmp("npLb", tag) && length == sizeof(int32_t) * 4) { 40 mHasInsets = true; 41 memcpy(&mOpticalInsets, data, sizeof(int32_t) * 4); 42 } else if (!strcmp("npOl", tag) && length == 24) { // 4 int32_ts, 1 float, 1 int32_t sized byte 43 mHasInsets = true; 44 memcpy(&mOutlineInsets, data, sizeof(int32_t) * 4); 45 mOutlineRadius = ((const float*)data)[4]; 46 mOutlineAlpha = ((const int32_t*)data)[5] & 0xff; 47 } 48 return true; // keep on decoding 49 } 50
