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/*
* Copyright (C) 2018 The LineageOS 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 org.lineageos.hardware;
import org.lineageos.internal.util.FileUtils;
/**
* Reader mode
*/
public class ReadingEnhancement {
private static final String TAG = "ReadingEnhancement";
private static final String FILE_READING = "/sys/class/graphics/fb0/reading_mode";
/**
* Whether device supports Reader Mode
*
* @return boolean Supported devices must return always true
*/
public static boolean isSupported() {
return FileUtils.isFileReadable(FILE_READING) && FileUtils.isFileWritable(FILE_READING);
}
/**
* This method return the current activation status of Reader Mode
*
* @return boolean Must be false when Reader Mode is not supported or not activated,
* or the operation failed while reading the status; true in any other case.
*/
public static boolean isEnabled() {
return Integer.parseInt(FileUtils.readOneLine(FILE_READING)) > 0;
}
/**
* This method allows to setup Reader Mode
*
* @param status The new Reader Mode status
* @return boolean Must be false if Reader Mode is not supported or the operation
* failed; true in any other case.
*/
public static boolean setEnabled(boolean status) {
return FileUtils.writeLine(FILE_READING, status ? "1" : "0");
}
}
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