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
17package android.view;
18
19import android.content.res.CompatibilityInfo;
20import android.os.IBinder;
21
22import java.util.Objects;
23
24/** @hide */
25public 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.equals(daj.mCompatInfo, mCompatInfo) &&
95                Objects.equals(daj.mActivityToken, mActivityToken);
96    }
97}
98