AlwaysOnDisplayPolicy.java revision c21891284b31b1372ee48b2f588850a5c482389e 
1/*
2 * Copyright (C) 2017 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 com.android.systemui.doze;
18
19import android.content.Context;
20import android.content.res.Resources;
21import android.provider.Settings;
22import android.text.format.DateUtils;
23import android.util.KeyValueListParser;
24import android.util.Log;
25
26import com.android.systemui.R;
27
28import java.util.Arrays;
29
30/**
31 * Class to store the policy for AOD, which comes from
32 * {@link android.provider.Settings.Global}
33 */
34public class AlwaysOnDisplayPolicy {
35    public static final String TAG = "AlwaysOnDisplayPolicy";
36
37    static final String KEY_SCREEN_BRIGHTNESS_ARRAY = "screen_brightness_array";
38    static final String KEY_DIMMING_SCRIM_ARRAY = "dimming_scrim_array";
39    static final String KEY_PROX_SCREEN_OFF_DELAY_MS = "prox_screen_off_delay";
40    static final String KEY_PROX_COOLDOWN_TRIGGER_MS = "prox_cooldown_trigger";
41    static final String KEY_PROX_COOLDOWN_PERIOD_MS = "prox_cooldown_period";
42
43    /**
44     * Integer array to map ambient brightness type to real screen brightness.
45     *
46     * @see Settings.Global#ALWAYS_ON_DISPLAY_CONSTANTS
47     * @see #KEY_SCREEN_BRIGHTNESS_ARRAY
48     */
49    public final int[] screenBrightnessArray;
50
51    /**
52     * Integer array to map ambient brightness type to dimming scrim.
53     *
54     * @see Settings.Global#ALWAYS_ON_DISPLAY_CONSTANTS
55     * @see #KEY_DIMMING_SCRIM_ARRAY
56     */
57    public final int[] dimmingScrimArray;
58
59    /**
60     * Delay time(ms) from covering the prox to turning off the screen.
61     *
62     * @see Settings.Global#ALWAYS_ON_DISPLAY_CONSTANTS
63     * @see #KEY_PROX_SCREEN_OFF_DELAY_MS
64     */
65    public final long proxScreenOffDelayMs;
66
67    /**
68     * The threshold time(ms) to trigger the cooldown timer, which will
69     * turn off prox sensor for a period.
70     *
71     * @see Settings.Global#ALWAYS_ON_DISPLAY_CONSTANTS
72     * @see #KEY_PROX_COOLDOWN_TRIGGER_MS
73     */
74    public final long proxCooldownTriggerMs;
75
76    /**
77     * The period(ms) to turning off the prox sensor if
78     * {@link #KEY_PROX_COOLDOWN_TRIGGER_MS} is triggered.
79     *
80     * @see Settings.Global#ALWAYS_ON_DISPLAY_CONSTANTS
81     * @see #KEY_PROX_COOLDOWN_PERIOD_MS
82     */
83    public final long proxCooldownPeriodMs;
84
85    private final KeyValueListParser mParser;
86
87    public AlwaysOnDisplayPolicy(Context context) {
88        final Resources resources = context.getResources();
89        mParser = new KeyValueListParser(',');
90
91        final String value = Settings.Global.getString(context.getContentResolver(),
92                Settings.Global.ALWAYS_ON_DISPLAY_CONSTANTS);
93
94        try {
95            mParser.setString(value);
96        } catch (IllegalArgumentException e) {
97            Log.e(TAG, "Bad AOD constants");
98        }
99
100        proxScreenOffDelayMs = mParser.getLong(KEY_PROX_SCREEN_OFF_DELAY_MS,
101                10 * DateUtils.SECOND_IN_MILLIS);
102        proxCooldownTriggerMs = mParser.getLong(KEY_PROX_COOLDOWN_TRIGGER_MS,
103                2 * DateUtils.SECOND_IN_MILLIS);
104        proxCooldownPeriodMs = mParser.getLong(KEY_PROX_COOLDOWN_PERIOD_MS,
105                5 * DateUtils.SECOND_IN_MILLIS);
106        screenBrightnessArray = parseIntArray(KEY_SCREEN_BRIGHTNESS_ARRAY,
107                resources.getIntArray(R.array.config_doze_brightness_sensor_to_brightness));
108        dimmingScrimArray = parseIntArray(KEY_DIMMING_SCRIM_ARRAY,
109                resources.getIntArray(R.array.config_doze_brightness_sensor_to_scrim_opacity));
110    }
111
112    private int[] parseIntArray(final String key, final int[] defaultArray) {
113        final String value = mParser.getString(key, null);
114        if (value != null) {
115            return Arrays.stream(value.split(":")).map(String::trim).mapToInt(
116                    Integer::parseInt).toArray();
117        } else {
118            return defaultArray;
119        }
120    }
121
122}
123