Merge "Add SystemUI support for front-facing camera protection" into rvc-dev (99608f31) · Commits · e / os / android_frameworks_base

packages/SystemUI/res/values/config.xml

+17 −0

Original line number	Diff line number	Diff line
		@@ -506,4 +506,21 @@
		<item>@*android:string/status_bar_headset</item>
		</string-array>

		<!-- A path similar to frameworks/base/core/res/res/values/config.xml
		config_mainBuiltInDisplayCutout that describes a path larger than the exact path of a display
		cutout. If present as well as config_enableDisplayCutoutProtection is set to true, then
		SystemUI will draw this "protection path" instead of the display cutout path that is normally
		used for anti-aliasing.

		This path will only be drawn when the front-facing camera turns on, otherwise the main
		DisplayCutout path will be rendered
		-->
		<string translatable="false" name="config_frontBuiltInDisplayCutoutProtection"></string>

		<!-- ID for the camera that needs extra protection -->
		<string translatable="false" name="config_protectedCameraId"></string>

		<!-- Flag to turn on the rendering of the above path or not -->
		<bool name="config_enableDisplayCutoutProtection">false</bool>

		</resources>

packages/SystemUI/src/com/android/systemui/CameraAvailabilityListener.kt

0 → 100644

+138 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License
		*/

		package com.android.systemui

		import android.content.Context
		import android.graphics.Path
		import android.graphics.Rect
		import android.graphics.RectF
		import android.hardware.camera2.CameraManager
		import android.util.PathParser
		import java.util.concurrent.Executor

		import kotlin.math.roundToInt

		const val TAG = "CameraOpTransitionController"

		/**
		* Listens for usage of the Camera and controls the ScreenDecorations transition to show extra
		* protection around a display cutout based on config_frontBuiltInDisplayCutoutProtection and
		* config_enableDisplayCutoutProtection
		*/
		class CameraAvailabilityListener(
		private val cameraManager: CameraManager,
		private val cutoutProtectionPath: Path,
		private val targetCameraId: String,
		private val executor: Executor
		) {
		private var cutoutBounds = Rect()
		private val listeners = mutableListOf<CameraTransitionCallback>()
		private val availabilityCallback: CameraManager.AvailabilityCallback =
		object : CameraManager.AvailabilityCallback() {
		override fun onCameraAvailable(cameraId: String) {
		if (targetCameraId == cameraId) {
		notifyCameraInactive()
		}
		}

		override fun onCameraUnavailable(cameraId: String) {
		if (targetCameraId == cameraId) {
		notifyCameraActive()
		}
		}
		}

		init {
		val computed = RectF()
		cutoutProtectionPath.computeBounds(computed, false /* unused */)
		cutoutBounds.set(
		computed.left.roundToInt(),
		computed.top.roundToInt(),
		computed.right.roundToInt(),
		computed.bottom.roundToInt())
		}

		/**
		* Start listening for availability events, and maybe notify listeners
		*
		* @return true if we started listening
		*/
		fun startListening() {
		registerCameraListener()
		}

		fun stop() {
		unregisterCameraListener()
		}

		fun addTransitionCallback(callback: CameraTransitionCallback) {
		listeners.add(callback)
		}

		fun removeTransitionCallback(callback: CameraTransitionCallback) {
		listeners.remove(callback)
		}

		private fun registerCameraListener() {
		cameraManager.registerAvailabilityCallback(executor, availabilityCallback)
		}

		private fun unregisterCameraListener() {
		cameraManager.unregisterAvailabilityCallback(availabilityCallback)
		}

		private fun notifyCameraActive() {
		listeners.forEach { it.onApplyCameraProtection(cutoutProtectionPath, cutoutBounds) }
		}

		private fun notifyCameraInactive() {
		listeners.forEach { it.onHideCameraProtection() }
		}

		/**
		* Callbacks to tell a listener that a relevant camera turned on and off.
		*/
		interface CameraTransitionCallback {
		fun onApplyCameraProtection(protectionPath: Path, bounds: Rect)
		fun onHideCameraProtection()
		}

		companion object Factory {
		fun build(context: Context, executor: Executor): CameraAvailabilityListener {
		val manager = context
		.getSystemService(Context.CAMERA_SERVICE) as CameraManager
		val res = context.resources
		val pathString = res.getString(R.string.config_frontBuiltInDisplayCutoutProtection)
		val cameraId = res.getString(R.string.config_protectedCameraId)

		return CameraAvailabilityListener(
		manager, pathFromString(pathString), cameraId, executor)
		}

		private fun pathFromString(pathString: String): Path {
		val spec = pathString.trim()
		val p: Path
		try {
		p = PathParser.createPathFromPathData(spec)
		} catch (e: Throwable) {
		throw IllegalArgumentException("Invalid protection path", e)
		}

		return p
		}
		}
		}
		No newline at end of file

packages/SystemUI/src/com/android/systemui/ScreenDecorations.java

+81 −4

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@ import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
		import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;

		import android.annotation.Dimension;
		import android.annotation.NonNull;
		import android.app.ActivityManager;
		import android.content.BroadcastReceiver;
		import android.content.Context;
		@@ -36,6 +37,7 @@ import android.content.Intent;
		import android.content.IntentFilter;
		import android.content.res.ColorStateList;
		import android.content.res.Configuration;
		import android.content.res.Resources;
		import android.graphics.Canvas;
		import android.graphics.Color;
		import android.graphics.Matrix;
		@@ -105,6 +107,7 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		private final Handler mMainHandler;
		private final TunerService mTunerService;
		private DisplayManager.DisplayListener mDisplayListener;
		private CameraAvailabilityListener mCameraListener;

		@VisibleForTesting
		protected int mRoundedDefault;
		@@ -122,6 +125,26 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		private boolean mPendingRotationChange;
		private Handler mHandler;

		private CameraAvailabilityListener.CameraTransitionCallback mCameraTransitionCallback =
		new CameraAvailabilityListener.CameraTransitionCallback() {
		@Override
		public void onApplyCameraProtection(@NonNull Path protectionPath, @NonNull Rect bounds) {
		// Show the extra protection around the front facing camera if necessary
		for (DisplayCutoutView dcv : mCutoutViews) {
		dcv.setProtection(protectionPath, bounds);
		dcv.setShowProtection(true);
		}
		}

		@Override
		public void onHideCameraProtection() {
		// Go back to the regular anti-aliasing
		for (DisplayCutoutView dcv : mCutoutViews) {
		dcv.setShowProtection(false);
		}
		}
		};

		/**
		* Converts a set of {@link Rect}s into a {@link Region}
		*
		@@ -169,6 +192,8 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		mDisplayManager = mContext.getSystemService(DisplayManager.class);
		updateRoundedCornerRadii();
		setupDecorations();
		setupCameraListener();

		mDisplayListener = new DisplayManager.DisplayListener() {
		@Override
		public void onDisplayAdded(int displayId) {
		@@ -443,6 +468,16 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		: pos - rotation;
		}

		private void setupCameraListener() {
		Resources res = mContext.getResources();
		boolean enabled = res.getBoolean(R.bool.config_enableDisplayCutoutProtection);
		if (enabled) {
		mCameraListener = CameraAvailabilityListener.Factory.build(mContext, mHandler::post);
		mCameraListener.addTransitionCallback(mCameraTransitionCallback);
		mCameraListener.startListening();
		}
		}

		private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {
		@@ -684,6 +719,13 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		private final List<Rect> mBounds = new ArrayList();
		private final Rect mBoundingRect = new Rect();
		private final Path mBoundingPath = new Path();
		// Don't initialize these because they are cached elsewhere and may not exist
		private Rect mProtectionRect;
		private Path mProtectionPath;
		private Rect mTotalBounds = new Rect();
		// Whether or not to show the cutout protection path
		private boolean mShowProtection = false;

		private final int[] mLocation = new int[2];
		private final ScreenDecorations mDecorations;
		private int mColor = Color.BLACK;
		@@ -727,7 +769,13 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		super.onDraw(canvas);
		getLocationOnScreen(mLocation);
		canvas.translate(-mLocation[0], -mLocation[1]);
		if (!mBoundingPath.isEmpty()) {

		if (mShowProtection && !mProtectionRect.isEmpty()) {
		mPaint.setColor(mColor);
		mPaint.setStyle(Paint.Style.FILL);
		mPaint.setAntiAlias(true);
		canvas.drawPath(mProtectionPath, mPaint);
		} else if (!mBoundingPath.isEmpty()) {
		mPaint.setColor(mColor);
		mPaint.setStyle(Paint.Style.FILL);
		mPaint.setAntiAlias(true);
		@@ -755,6 +803,22 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		update();
		}

		void setProtection(Path protectionPath, Rect pathBounds) {
		mProtectionPath = protectionPath;
		mProtectionRect = pathBounds;
		}

		void setShowProtection(boolean shouldShow) {
		if (mShowProtection == shouldShow) {
		return;
		}

		mShowProtection = shouldShow;
		updateBoundingPath();
		requestLayout();
		invalidate();
		}

		private void update() {
		if (!isAttachedToWindow() \|\| mDecorations.mPendingRotationChange) {
		return;
		@@ -794,6 +858,9 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		Matrix m = new Matrix();
		transformPhysicalToLogicalCoordinates(mInfo.rotation, dw, dh, m);
		mBoundingPath.transform(m);
		if (mProtectionPath != null) {
		mProtectionPath.transform(m);
		}
		}

		private static void transformPhysicalToLogicalCoordinates(@Surface.Rotation int rotation,
		@@ -855,10 +922,20 @@ public class ScreenDecorations extends SystemUI implements Tunable {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		return;
		}

		if (mShowProtection) {
		// Make sure that our measured height encompases the protection
		mTotalBounds.union(mBoundingRect);
		mTotalBounds.union(mProtectionRect);
		setMeasuredDimension(
		resolveSizeAndState(mTotalBounds.width(), widthMeasureSpec, 0),
		resolveSizeAndState(mTotalBounds.height(), heightMeasureSpec, 0));
		} else {
		setMeasuredDimension(
		resolveSizeAndState(mBoundingRect.width(), widthMeasureSpec, 0),
		resolveSizeAndState(mBoundingRect.height(), heightMeasureSpec, 0));
		}
		}

		public static void boundsFromDirection(DisplayCutout displayCutout, int gravity,
		Rect out) {