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