1 /*
2  * Copyright (C) 2022 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.hardware.input;
18 
19 /**
20  * The KeyboardBacklightState class is a representation of a keyboard backlight which is a
21  * single-colored backlight that illuminates all the keys on the keyboard.
22  *
23  * @hide
24  */
25 public abstract class KeyboardBacklightState {
26 
27     /**
28      * Get the backlight brightness level in range [0, {@link #getMaxBrightnessLevel()}].
29      *
30      * @return backlight brightness level
31      */
getBrightnessLevel()32     public abstract int getBrightnessLevel();
33 
34     /**
35      * Get the max backlight brightness level.
36      *
37      * @return max backlight brightness level
38      */
getMaxBrightnessLevel()39     public abstract int getMaxBrightnessLevel();
40 }
41 
42