blob: 9dc326622b65fd5711fe15d7e4814861c8dae947 [file] [log] [blame]
/*
* Copyright (C) 2010 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.
*/
package com.android.gallery3d.glrenderer;
import android.graphics.Rect;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
// See "frameworks/base/include/utils/ResourceTypes.h" for the format of
// NinePatch chunk.
class NinePatchChunk {
public static final int NO_COLOR = 0x00000001;
public static final int TRANSPARENT_COLOR = 0x00000000;
public Rect mPaddings = new Rect();
public int mDivX[];
public int mDivY[];
public int mColor[];
private static void readIntArray(int[] data, ByteBuffer buffer) {
for (int i = 0, n = data.length; i < n; ++i) {
data[i] = buffer.getInt();
}
}
private static void checkDivCount(int length) {
if (length == 0 || (length & 0x01) != 0) {
throw new RuntimeException("invalid nine-patch: " + length);
}
}
public static NinePatchChunk deserialize(byte[] data) {
ByteBuffer byteBuffer =
ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
byte wasSerialized = byteBuffer.get();
if (wasSerialized == 0) return null;
NinePatchChunk chunk = new NinePatchChunk();
chunk.mDivX = new int[byteBuffer.get()];
chunk.mDivY = new int[byteBuffer.get()];
chunk.mColor = new int[byteBuffer.get()];
checkDivCount(chunk.mDivX.length);
checkDivCount(chunk.mDivY.length);
// skip 8 bytes
byteBuffer.getInt();
byteBuffer.getInt();
chunk.mPaddings.left = byteBuffer.getInt();
chunk.mPaddings.right = byteBuffer.getInt();
chunk.mPaddings.top = byteBuffer.getInt();
chunk.mPaddings.bottom = byteBuffer.getInt();
// skip 4 bytes
byteBuffer.getInt();
readIntArray(chunk.mDivX, byteBuffer);
readIntArray(chunk.mDivY, byteBuffer);
readIntArray(chunk.mColor, byteBuffer);
return chunk;
}
}