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 
DisplayAdjustments()31     public DisplayAdjustments() {
32     }
33 
DisplayAdjustments(Configuration configuration)34     public DisplayAdjustments(Configuration configuration) {
35         mConfiguration = new Configuration(configuration != null
36                 ? configuration : Configuration.EMPTY);
37     }
38 
DisplayAdjustments(DisplayAdjustments daj)39     public DisplayAdjustments(DisplayAdjustments daj) {
40         setCompatibilityInfo(daj.mCompatInfo);
41         mConfiguration = new Configuration(daj.mConfiguration != null
42                 ? daj.mConfiguration : Configuration.EMPTY);
43     }
44 
setCompatibilityInfo(CompatibilityInfo compatInfo)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 
getCompatibilityInfo()58     public CompatibilityInfo getCompatibilityInfo() {
59         return mCompatInfo;
60     }
61 
setConfiguration(Configuration configuration)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 
getConfiguration()70     public Configuration getConfiguration() {
71         return mConfiguration;
72     }
73 
74     @Override
hashCode()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
equals(Object o)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