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.content.res.Configuration;
21
22import java.util.Objects;
23
24/** @hide */
25public 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