83 lines
2.5 KiB
Java
83 lines
2.5 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hippo.glview.glrenderer;
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import android.graphics.Rect;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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// See "frameworks/base/include/utils/ResourceTypes.h" for the format of
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// NinePatch chunk.
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class NinePatchChunk {
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public static final int NO_COLOR = 0x00000001;
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public static final int TRANSPARENT_COLOR = 0x00000000;
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public Rect mPaddings = new Rect();
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public int mDivX[];
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public int mDivY[];
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public int mColor[];
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private static void readIntArray(int[] data, ByteBuffer buffer) {
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for (int i = 0, n = data.length; i < n; ++i) {
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data[i] = buffer.getInt();
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}
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}
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private static void checkDivCount(int length) {
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if (length == 0 || (length & 0x01) != 0) {
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throw new RuntimeException("invalid nine-patch: " + length);
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}
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}
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public static NinePatchChunk deserialize(byte[] data) {
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ByteBuffer byteBuffer =
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ByteBuffer.wrap(data).order(ByteOrder.nativeOrder());
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byte wasSerialized = byteBuffer.get();
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if (wasSerialized == 0) return null;
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NinePatchChunk chunk = new NinePatchChunk();
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chunk.mDivX = new int[byteBuffer.get()];
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chunk.mDivY = new int[byteBuffer.get()];
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chunk.mColor = new int[byteBuffer.get()];
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checkDivCount(chunk.mDivX.length);
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checkDivCount(chunk.mDivY.length);
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// skip 8 bytes
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byteBuffer.getInt();
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byteBuffer.getInt();
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chunk.mPaddings.left = byteBuffer.getInt();
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chunk.mPaddings.right = byteBuffer.getInt();
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chunk.mPaddings.top = byteBuffer.getInt();
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chunk.mPaddings.bottom = byteBuffer.getInt();
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// skip 4 bytes
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byteBuffer.getInt();
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readIntArray(chunk.mDivX, byteBuffer);
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readIntArray(chunk.mDivY, byteBuffer);
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readIntArray(chunk.mColor, byteBuffer);
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return chunk;
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}
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}
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