Revert "fix(magnification thumbnail): remove feature flag, enable thumbnail by default" (52502358) · Commits · e / os / android_frameworks_base

services/accessibility/java/com/android/server/accessibility/magnification/FullScreenMagnificationController.java

+37 −5

Original line number	Diff line number	Diff line
		@@ -110,6 +110,7 @@ public class FullScreenMagnificationController implements
		private boolean mAlwaysOnMagnificationEnabled = false;
		private final DisplayManagerInternal mDisplayManagerInternal;

		private final MagnificationThumbnailFeatureFlag mMagnificationThumbnailFeatureFlag;
		@NonNull private final Supplier<MagnificationThumbnail> mThumbnailSupplier;

		/**
		@@ -642,6 +643,13 @@ public class FullScreenMagnificationController implements
		}
		}

		void onThumbnailFeatureFlagChanged() {
		synchronized (mLock) {
		destroyThumbnail();
		createThumbnailIfSupported();
		}
		}

		/**
		* Updates the current magnification spec.
		*
		@@ -802,19 +810,43 @@ public class FullScreenMagnificationController implements
		addInfoChangedCallback(magnificationInfoChangedCallback);
		mScaleProvider = scaleProvider;
		mDisplayManagerInternal = LocalServices.getService(DisplayManagerInternal.class);
		mMagnificationThumbnailFeatureFlag = new MagnificationThumbnailFeatureFlag();
		mMagnificationThumbnailFeatureFlag.addOnChangedListener(
		backgroundExecutor, this::onMagnificationThumbnailFeatureFlagChanged);
		if (thumbnailSupplier != null) {
		mThumbnailSupplier = thumbnailSupplier;
		} else {
		mThumbnailSupplier = () -> {
		if (mMagnificationThumbnailFeatureFlag.isFeatureFlagEnabled()) {
		return new MagnificationThumbnail(
		ctx.getContext(),
		ctx.getContext().getSystemService(WindowManager.class),
		new Handler(ctx.getContext().getMainLooper())
		);
		}
		return null;
		};
		}
		}

		private void onMagnificationThumbnailFeatureFlagChanged() {
		synchronized (mLock) {
		for (int i = 0; i < mDisplays.size(); i++) {
		onMagnificationThumbnailFeatureFlagChanged(mDisplays.keyAt(i));
		}
		}
		}

		private void onMagnificationThumbnailFeatureFlagChanged(int displayId) {
		synchronized (mLock) {
		final DisplayMagnification display = mDisplays.get(displayId);
		if (display == null) {
		return;
		}
		display.onThumbnailFeatureFlagChanged();
		}
		}

		/**
		* Start tracking the magnification region for services that control magnification and the
		* magnification gesture handler.

services/accessibility/java/com/android/server/accessibility/magnification/MagnificationThumbnailFeatureFlag.java

0 → 100644

+46 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.server.accessibility.magnification;

		import android.provider.DeviceConfig;

		/**
		* Encapsulates the feature flags for magnification thumbnail. {@see DeviceConfig}
		*
		* @hide
		*/
		public class MagnificationThumbnailFeatureFlag extends MagnificationFeatureFlagBase {

		private static final String NAMESPACE = DeviceConfig.NAMESPACE_ACCESSIBILITY;
		private static final String FEATURE_NAME_ENABLE_MAGNIFIER_THUMBNAIL =
		"enable_magnifier_thumbnail";

		@Override
		String getNamespace() {
		return NAMESPACE;
		}

		@Override
		String getFeatureName() {
		return FEATURE_NAME_ENABLE_MAGNIFIER_THUMBNAIL;
		}

		@Override
		boolean getDefaultValue() {
		return false;
		}
		}