| package com.android.camera.ui; |
| |
| 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; |
| } |
| } |