DisplayAdjustments.java revision 48d0d1886731ff19ed3fb47a5997be5df0d1bba8 
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 com.android.internal.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(CompatibilityInfo compatInfo, IBinder token) {
41        setCompatibilityInfo(compatInfo);
42        mActivityToken = token;
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 setActivityToken(IBinder token) {
63        if (this == DEFAULT_DISPLAY_ADJUSTMENTS) {
64            throw new IllegalArgumentException(
65                    "setActivityToken: Cannot modify DEFAULT_DISPLAY_ADJUSTMENTS");
66        }
67        mActivityToken = token;
68    }
69
70    public IBinder getActivityToken() {
71        return mActivityToken;
72    }
73
74    @Override
75    public int hashCode() {
76        int hash = 17;
77        hash = hash * 31 + mCompatInfo.hashCode();
78        if (DEVELOPMENT_RESOURCES_DEPEND_ON_ACTIVITY_TOKEN) {
79            hash = hash * 31 + (mActivityToken == null ? 0 : mActivityToken.hashCode());
80        }
81        return hash;
82    }
83
84    @Override
85    public boolean equals(Object o) {
86        if (!(o instanceof DisplayAdjustments)) {
87            return false;
88        }
89        DisplayAdjustments daj = (DisplayAdjustments)o;
90        return Objects.equal(daj.mCompatInfo, mCompatInfo) &&
91                Objects.equal(daj.mActivityToken, mActivityToken);
92    }
93}
94