1 /*
2  * Copyright (C) 2023 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 com.android.systemui.shared.hardware
18 
19 import android.view.InputDevice
20 
21 /**
22  * Returns true if [InputDevice] is electronic components to allow a user to use an active stylus in
23  * the host device or a passive stylus is detected by the host device.
24  */
25 val InputDevice.isInternalStylusSource: Boolean
26     get() = isAnyStylusSource && !isExternal
27 
28 /** Returns true if [InputDevice] is an active stylus. */
29 val InputDevice.isExternalStylusSource: Boolean
30     get() = isAnyStylusSource && isExternal
31 
32 /**
33  * Returns true if [InputDevice] supports any stylus source.
34  *
35  * @see InputDevice.isInternalStylusSource
36  * @see InputDevice.isExternalStylusSource
37  */
38 val InputDevice.isAnyStylusSource: Boolean
39     get() = supportsSource(InputDevice.SOURCE_STYLUS)
40