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 com.android.systemui.biometrics.dagger
18 
19 import android.content.res.Resources
20 import com.android.internal.R
21 import com.android.systemui.biometrics.EllipseOverlapDetectorParams
22 import com.android.systemui.biometrics.udfps.BoundingBoxOverlapDetector
23 import com.android.systemui.biometrics.udfps.EllipseOverlapDetector
24 import com.android.systemui.biometrics.udfps.OverlapDetector
25 import com.android.systemui.dagger.SysUISingleton
26 import com.android.systemui.flags.FeatureFlags
27 import com.android.systemui.flags.Flags
28 import dagger.Module
29 import dagger.Provides
30 
31 /** Dagger module for all things UDFPS. TODO(b/260558624): Move to BiometricsModule. */
32 @Module
33 interface UdfpsModule {
34     companion object {
35 
36         @Provides
37         @SysUISingleton
38         fun providesOverlapDetector(featureFlags: FeatureFlags): OverlapDetector {
39             if (featureFlags.isEnabled(Flags.UDFPS_ELLIPSE_DETECTION)) {
40                 val selectedOption =
41                     Resources.getSystem()
42                         .getInteger(R.integer.config_selected_udfps_touch_detection)
43                 val values =
44                     Resources.getSystem()
45                         .getStringArray(R.array.config_udfps_touch_detection_options)[
46                             selectedOption]
47                         .split(",")
48                         .map { it.toFloat() }
49 
50                 return if (values[0] == 1f) {
51                     EllipseOverlapDetector(
52                         EllipseOverlapDetectorParams(
53                             minOverlap = values[3],
54                             targetSize = values[2],
55                             stepSize = values[4].toInt()
56                         )
57                     )
58                 } else {
59                     BoundingBoxOverlapDetector(values[2])
60                 }
61             } else {
62                 return BoundingBoxOverlapDetector(1f)
63             }
64         }
65     }
66 }
67