/* * Copyright 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.settings.development; import android.content.Context; import android.os.SystemProperties; import androidx.annotation.VisibleForTesting; import androidx.preference.Preference; import androidx.preference.SwitchPreference; import com.android.settings.core.PreferenceControllerMixin; import com.android.settingslib.development.DeveloperOptionsPreferenceController; import com.android.settingslib.development.SystemPropPoker; /** * Controller that toggles window blurs on SurfaceFlinger on devices that support it. */ public final class EnableBlursPreferenceController extends DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin { @VisibleForTesting static final String DISABLE_BLURS_SYSPROP = "persist.sys.sf.disable_blurs"; private static final String ENABLE_BLURS_ON_WINDOWS = "enable_blurs_on_windows"; private final boolean mBlurSupported; public EnableBlursPreferenceController(Context context) { this(context, SystemProperties .getBoolean("ro.surface_flinger.supports_background_blur", false)); } @VisibleForTesting public EnableBlursPreferenceController(Context context, boolean blurSupported) { super(context); mBlurSupported = blurSupported; } @Override public String getPreferenceKey() { return ENABLE_BLURS_ON_WINDOWS; } @Override public boolean onPreferenceChange(Preference preference, Object newValue) { final boolean isDisabled = !(Boolean) newValue; SystemProperties.set(DISABLE_BLURS_SYSPROP, isDisabled ? "1" : "0"); SystemPropPoker.getInstance().poke(); return true; } @Override public boolean isAvailable() { return mBlurSupported; } @Override public void updateState(Preference preference) { boolean isEnabled = !SystemProperties.getBoolean( DISABLE_BLURS_SYSPROP, false /* default */); ((SwitchPreference) mPreference).setChecked(isEnabled); } @Override protected void onDeveloperOptionsSwitchDisabled() { super.onDeveloperOptionsSwitchDisabled(); SystemProperties.set(DISABLE_BLURS_SYSPROP, null); updateState(null); } }