1 /* 2 * Copyright 2024 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.server.input.debug; 18 19 import android.annotation.AnyThread; 20 import android.annotation.Nullable; 21 import android.content.Context; 22 import android.hardware.input.InputManager; 23 import android.os.Handler; 24 import android.os.Looper; 25 import android.util.Slog; 26 import android.view.InputDevice; 27 import android.view.WindowManager; 28 29 import com.android.server.input.InputManagerService; 30 import com.android.server.input.TouchpadHardwareProperties; 31 import com.android.server.input.TouchpadHardwareState; 32 33 import java.util.Objects; 34 35 public class TouchpadDebugViewController implements InputManager.InputDeviceListener { 36 37 private static final String TAG = "TouchpadDebugView"; 38 39 private final Context mContext; 40 private final Handler mHandler; 41 42 @Nullable 43 private TouchpadDebugView mTouchpadDebugView; 44 45 private final InputManagerService mInputManagerService; 46 private boolean mTouchpadVisualizerEnabled = false; 47 TouchpadDebugViewController(Context context, Looper looper, InputManagerService inputManagerService)48 public TouchpadDebugViewController(Context context, Looper looper, 49 InputManagerService inputManagerService) { 50 //TODO(b/369059937): Handle multi-display scenarios 51 mContext = context; 52 mHandler = new Handler(looper); 53 mInputManagerService = inputManagerService; 54 } 55 56 @Override onInputDeviceAdded(int deviceId)57 public void onInputDeviceAdded(int deviceId) { 58 if (!mTouchpadVisualizerEnabled) { 59 return; 60 } 61 final InputManager inputManager = Objects.requireNonNull( 62 mContext.getSystemService(InputManager.class)); 63 InputDevice inputDevice = inputManager.getInputDevice(deviceId); 64 if (inputDevice == null || !inputDevice.supportsSource( 65 InputDevice.SOURCE_TOUCHPAD | InputDevice.SOURCE_MOUSE)) { 66 return; 67 } 68 showDebugView(deviceId); 69 } 70 71 @Override onInputDeviceRemoved(int deviceId)72 public void onInputDeviceRemoved(int deviceId) { 73 hideDebugView(deviceId); 74 if (mTouchpadDebugView == null) { 75 final InputManager inputManager = Objects.requireNonNull( 76 mContext.getSystemService(InputManager.class)); 77 for (int id : inputManager.getInputDeviceIds()) { 78 onInputDeviceAdded(id); 79 } 80 } 81 } 82 83 /** 84 * Switch to showing the touchpad with the given device ID 85 */ switchVisualisationToTouchpadId(int newDeviceId)86 public void switchVisualisationToTouchpadId(int newDeviceId) { 87 if (mTouchpadDebugView != null) hideDebugView(mTouchpadDebugView.getTouchpadId()); 88 showDebugView(newDeviceId); 89 } 90 91 @Override onInputDeviceChanged(int deviceId)92 public void onInputDeviceChanged(int deviceId) { 93 } 94 95 /** 96 * Notify the controller that the touchpad visualizer setting value has changed. 97 * This must be called from the same looper thread as {@code mHandler}. 98 */ updateTouchpadVisualizerEnabled(boolean touchpadVisualizerEnabled)99 public void updateTouchpadVisualizerEnabled(boolean touchpadVisualizerEnabled) { 100 if (mTouchpadVisualizerEnabled == touchpadVisualizerEnabled) { 101 return; 102 } 103 mTouchpadVisualizerEnabled = touchpadVisualizerEnabled; 104 final InputManager inputManager = Objects.requireNonNull( 105 mContext.getSystemService(InputManager.class)); 106 if (touchpadVisualizerEnabled) { 107 inputManager.registerInputDeviceListener(this, mHandler); 108 for (int deviceId : inputManager.getInputDeviceIds()) { 109 onInputDeviceAdded(deviceId); 110 } 111 } else { 112 if (mTouchpadDebugView != null) { 113 hideDebugView(mTouchpadDebugView.getTouchpadId()); 114 } 115 inputManager.unregisterInputDeviceListener(this); 116 } 117 } 118 showDebugView(int touchpadId)119 private void showDebugView(int touchpadId) { 120 if (mTouchpadDebugView != null) { 121 return; 122 } 123 final WindowManager wm = Objects.requireNonNull( 124 mContext.getSystemService(WindowManager.class)); 125 126 TouchpadHardwareProperties touchpadHardwareProperties = 127 mInputManagerService.getTouchpadHardwareProperties( 128 touchpadId); 129 130 mTouchpadDebugView = new TouchpadDebugView(mContext, touchpadId, 131 touchpadHardwareProperties, this::switchVisualisationToTouchpadId); 132 final WindowManager.LayoutParams mWindowLayoutParams = 133 mTouchpadDebugView.getWindowLayoutParams(); 134 135 wm.addView(mTouchpadDebugView, mWindowLayoutParams); 136 Slog.d(TAG, "Touchpad debug view created."); 137 138 if (touchpadHardwareProperties != null) { 139 Slog.d(TAG, touchpadHardwareProperties.toString()); 140 } else { 141 Slog.w(TAG, "Failed to retrieve touchpad hardware properties for " 142 + "device ID: " + touchpadId); 143 } 144 } 145 hideDebugView(int touchpadId)146 private void hideDebugView(int touchpadId) { 147 if (mTouchpadDebugView == null || mTouchpadDebugView.getTouchpadId() != touchpadId) { 148 return; 149 } 150 final WindowManager wm = Objects.requireNonNull( 151 mContext.getSystemService(WindowManager.class)); 152 wm.removeView(mTouchpadDebugView); 153 mTouchpadDebugView = null; 154 Slog.d(TAG, "Touchpad debug view removed."); 155 } 156 157 /** 158 * Notifies about an update in the touchpad's hardware state. 159 * 160 * @param touchpadHardwareState the hardware state of a touchpad 161 * @param deviceId the deviceId of the touchpad that is sending the hardware state 162 */ 163 @AnyThread updateTouchpadHardwareState(TouchpadHardwareState touchpadHardwareState, int deviceId)164 public void updateTouchpadHardwareState(TouchpadHardwareState touchpadHardwareState, 165 int deviceId) { 166 mHandler.post(() -> { 167 if (mTouchpadDebugView != null) { 168 mTouchpadDebugView.post(() -> { 169 // hideDebugView might have been called since we posted the action (e.g. if the 170 // developer option toggle is clicked using the same touchpad currently being 171 // visualized, b/376018148), so we need to check for null again. 172 if (mTouchpadDebugView != null) { 173 mTouchpadDebugView.updateHardwareState(touchpadHardwareState, 174 deviceId); 175 } 176 }); 177 } 178 }); 179 } 180 181 /** 182 * Notify the TouchpadDebugView of a new touchpad gesture. 183 */ 184 @AnyThread updateTouchpadGestureInfo(int gestureType, int deviceId)185 public void updateTouchpadGestureInfo(int gestureType, int deviceId) { 186 mHandler.post(() -> { 187 if (mTouchpadDebugView != null) { 188 mTouchpadDebugView.post(() -> { 189 // hideDebugView might have been called since we posted the action (e.g. if the 190 // developer option toggle is clicked using the same touchpad currently being 191 // visualized, b/376018148), so we need to check for null again. 192 if (mTouchpadDebugView != null) { 193 mTouchpadDebugView.updateGestureInfo(gestureType, deviceId); 194 } 195 }); 196 } 197 }); 198 } 199 } 200