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      1 /*
      2  * Copyright (C) 2011 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 
     17 package android.view;
     18 
     19 import android.content.res.CompatibilityInfo;
     20 import android.os.IBinder;
     21 
     22 import com.android.internal.util.Objects;
     23 
     24 /** @hide */
     25 public class DisplayAdjustments {
     26     public static final boolean DEVELOPMENT_RESOURCES_DEPEND_ON_ACTIVITY_TOKEN = false;
     27 
     28     public static final DisplayAdjustments DEFAULT_DISPLAY_ADJUSTMENTS = new DisplayAdjustments();
     29 
     30     private volatile CompatibilityInfo mCompatInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO;
     31     private volatile IBinder mActivityToken;
     32 
     33     public DisplayAdjustments() {
     34     }
     35 
     36     public DisplayAdjustments(IBinder token) {
     37         mActivityToken = token;
     38     }
     39 
     40     public DisplayAdjustments(DisplayAdjustments daj) {
     41         this (daj.getCompatibilityInfo(), daj.getActivityToken());
     42     }
     43 
     44     public DisplayAdjustments(CompatibilityInfo compatInfo, IBinder token) {
     45         setCompatibilityInfo(compatInfo);
     46         mActivityToken = token;
     47     }
     48 
     49     public void setCompatibilityInfo(CompatibilityInfo compatInfo) {
     50         if (this == DEFAULT_DISPLAY_ADJUSTMENTS) {
     51             throw new IllegalArgumentException(
     52                     "setCompatbilityInfo: Cannot modify DEFAULT_DISPLAY_ADJUSTMENTS");
     53         }
     54         if (compatInfo != null && (compatInfo.isScalingRequired()
     55                 || !compatInfo.supportsScreen())) {
     56             mCompatInfo = compatInfo;
     57         } else {
     58             mCompatInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO;
     59         }
     60     }
     61 
     62     public CompatibilityInfo getCompatibilityInfo() {
     63         return mCompatInfo;
     64     }
     65 
     66     public void setActivityToken(IBinder token) {
     67         if (this == DEFAULT_DISPLAY_ADJUSTMENTS) {
     68             throw new IllegalArgumentException(
     69                     "setActivityToken: Cannot modify DEFAULT_DISPLAY_ADJUSTMENTS");
     70         }
     71         mActivityToken = token;
     72     }
     73 
     74     public IBinder getActivityToken() {
     75         return mActivityToken;
     76     }
     77 
     78     @Override
     79     public int hashCode() {
     80         int hash = 17;
     81         hash = hash * 31 + mCompatInfo.hashCode();
     82         if (DEVELOPMENT_RESOURCES_DEPEND_ON_ACTIVITY_TOKEN) {
     83             hash = hash * 31 + (mActivityToken == null ? 0 : mActivityToken.hashCode());
     84         }
     85         return hash;
     86     }
     87 
     88     @Override
     89     public boolean equals(Object o) {
     90         if (!(o instanceof DisplayAdjustments)) {
     91             return false;
     92         }
     93         DisplayAdjustments daj = (DisplayAdjustments)o;
     94         return Objects.equal(daj.mCompatInfo, mCompatInfo) &&
     95                 Objects.equal(daj.mActivityToken, mActivityToken);
     96     }
     97 }
     98