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