| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "NinePatchPeeker.h" |
| |
| #include "SkBitmap.h" |
| |
| using namespace android; |
| |
| bool NinePatchPeeker::peek(const char tag[], const void* data, size_t length) { |
| if (!strcmp("npTc", tag) && length >= sizeof(Res_png_9patch)) { |
| Res_png_9patch* patch = (Res_png_9patch*) data; |
| size_t patchSize = patch->serializedSize(); |
| if (length != patchSize) { |
| return false; |
| } |
| // You have to copy the data because it is owned by the png reader |
| Res_png_9patch* patchNew = (Res_png_9patch*) malloc(patchSize); |
| memcpy(patchNew, patch, patchSize); |
| Res_png_9patch::deserialize(patchNew); |
| patchNew->fileToDevice(); |
| free(mPatch); |
| mPatch = patchNew; |
| mPatchSize = patchSize; |
| |
| // now update our host to force index or 32bit config |
| // 'cause we don't want 565 predithered, since as a 9patch, we know |
| // we will be stretched, and therefore we want to dither afterwards. |
| SkImageDecoder::PrefConfigTable table; |
| table.fPrefFor_8Index_NoAlpha_src = SkBitmap::kIndex8_Config; |
| table.fPrefFor_8Index_YesAlpha_src = SkBitmap::kIndex8_Config; |
| table.fPrefFor_8Gray_src = SkBitmap::kARGB_8888_Config; |
| table.fPrefFor_8bpc_NoAlpha_src = SkBitmap::kARGB_8888_Config; |
| table.fPrefFor_8bpc_YesAlpha_src = SkBitmap::kARGB_8888_Config; |
| |
| mHost->setPrefConfigTable(table); |
| } else if (!strcmp("npLb", tag) && length == sizeof(int32_t) * 4) { |
| mHasInsets = true; |
| memcpy(&mOpticalInsets, data, sizeof(int32_t) * 4); |
| } else if (!strcmp("npOl", tag) && length == 24) { // 4 int32_ts, 1 float, 1 int32_t sized byte |
| mHasInsets = true; |
| memcpy(&mOutlineInsets, data, sizeof(int32_t) * 4); |
| mOutlineRadius = ((const float*)data)[4]; |
| mOutlineAlpha = ((const int32_t*)data)[5] & 0xff; |
| } |
| return true; // keep on decoding |
| } |