1/* 2 * Copyright (C) 2013 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 android.content.res; 18 19import android.os.IBinder; 20 21/** @hide */ 22public final class ResourcesKey { 23 final String mResDir; 24 final float mScale; 25 private final int mHash; 26 private final IBinder mToken; 27 28 public final int mDisplayId; 29 public final Configuration mOverrideConfiguration = new Configuration(); 30 31 public ResourcesKey(String resDir, int displayId, Configuration overrideConfiguration, 32 float scale, IBinder token) { 33 mResDir = resDir; 34 mDisplayId = displayId; 35 if (overrideConfiguration != null) { 36 mOverrideConfiguration.setTo(overrideConfiguration); 37 } 38 mScale = scale; 39 mToken = token; 40 41 int hash = 17; 42 hash = 31 * hash + (mResDir == null ? 0 : mResDir.hashCode()); 43 hash = 31 * hash + mDisplayId; 44 hash = 31 * hash + (mOverrideConfiguration != null 45 ? mOverrideConfiguration.hashCode() : 0); 46 hash = 31 * hash + Float.floatToIntBits(mScale); 47 mHash = hash; 48 } 49 50 public boolean hasOverrideConfiguration() { 51 return !Configuration.EMPTY.equals(mOverrideConfiguration); 52 } 53 54 @Override 55 public int hashCode() { 56 return mHash; 57 } 58 59 @Override 60 public boolean equals(Object obj) { 61 if (!(obj instanceof ResourcesKey)) { 62 return false; 63 } 64 ResourcesKey peer = (ResourcesKey) obj; 65 66 if ((mResDir == null) && (peer.mResDir != null)) { 67 return false; 68 } 69 if ((mResDir != null) && (peer.mResDir == null)) { 70 return false; 71 } 72 if ((mResDir != null) && (peer.mResDir != null)) { 73 if (!mResDir.equals(peer.mResDir)) { 74 return false; 75 } 76 } 77 if (mDisplayId != peer.mDisplayId) { 78 return false; 79 } 80 if (mOverrideConfiguration != peer.mOverrideConfiguration) { 81 if (mOverrideConfiguration == null || peer.mOverrideConfiguration == null) { 82 return false; 83 } 84 if (!mOverrideConfiguration.equals(peer.mOverrideConfiguration)) { 85 return false; 86 } 87 } 88 if (mScale != peer.mScale) { 89 return false; 90 } 91 return true; 92 } 93 94 @Override 95 public String toString() { 96 return Integer.toHexString(mHash); 97 } 98} 99