1 /* 2 * Copyright (C) 2017 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.settings.development; 18 19 import android.content.Context; 20 import android.os.SystemProperties; 21 import android.support.annotation.VisibleForTesting; 22 import android.support.v14.preference.SwitchPreference; 23 import android.support.v7.preference.Preference; 24 25 import com.android.settings.core.PreferenceControllerMixin; 26 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 27 import com.android.settingslib.development.SystemPropPoker; 28 29 public class ForceGpuRenderingPreferenceController extends DeveloperOptionsPreferenceController 30 implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin { 31 32 private static final String FORCE_HARDWARE_UI_KEY = "force_hw_ui"; 33 34 @VisibleForTesting 35 static final String HARDWARE_UI_PROPERTY = "persist.sys.ui.hw"; 36 ForceGpuRenderingPreferenceController(Context context)37 public ForceGpuRenderingPreferenceController(Context context) { 38 super(context); 39 } 40 41 @Override getPreferenceKey()42 public String getPreferenceKey() { 43 return FORCE_HARDWARE_UI_KEY; 44 } 45 46 @Override onPreferenceChange(Preference preference, Object newValue)47 public boolean onPreferenceChange(Preference preference, Object newValue) { 48 final boolean isEnabled = (Boolean) newValue; 49 SystemProperties.set(HARDWARE_UI_PROPERTY, 50 isEnabled ? Boolean.toString(true) : Boolean.toString(false)); 51 SystemPropPoker.getInstance().poke(); 52 return true; 53 } 54 55 @Override updateState(Preference preference)56 public void updateState(Preference preference) { 57 final boolean isEnabled = SystemProperties.getBoolean(HARDWARE_UI_PROPERTY, 58 false /* default */); 59 ((SwitchPreference) mPreference).setChecked(isEnabled); 60 } 61 62 @Override onDeveloperOptionsSwitchDisabled()63 protected void onDeveloperOptionsSwitchDisabled() { 64 super.onDeveloperOptionsSwitchDisabled(); 65 SystemProperties.set(HARDWARE_UI_PROPERTY, Boolean.toString(false)); 66 ((SwitchPreference) mPreference).setChecked(false); 67 } 68 } 69