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/*
* 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.
mHost->setPreserveSrcDepth(true);
} 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
}
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