1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.layoutlib.bridge.util; 18 19import java.io.File; 20import java.io.FileInputStream; 21import java.io.FileNotFoundException; 22 23/** 24 * Simpler wrapper around FileInputStream. This is used when the input stream represent 25 * not a normal bitmap but a nine patch. 26 * This is useful when the InputStream is created in a method but used in another that needs 27 * to know whether this is 9-patch or not, such as BitmapFactory. 28 */ 29public class NinePatchInputStream extends FileInputStream { 30 private boolean mFakeMarkSupport = true; 31 public NinePatchInputStream(File file) throws FileNotFoundException { 32 super(file); 33 } 34 35 @Override 36 public boolean markSupported() { 37 if (mFakeMarkSupport) { 38 // this is needed so that BitmapFactory doesn't wrap this in a BufferedInputStream. 39 return true; 40 } 41 42 return super.markSupported(); 43 } 44 45 public void disableFakeMarkSupport() { 46 // disable fake mark support so that in case codec actually try to use them 47 // we don't lie to them. 48 mFakeMarkSupport = false; 49 } 50} 51