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/*
* Copyright (C) 2014-2016 The CyanogenMod 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.cyanogenmod.hardware;
import android.util.Log;
import org.cyanogenmod.internal.util.FileUtils;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
/**
* Glove mode / high touch sensitivity
*/
public class HighTouchSensitivity {
private static final String TAG = "HighTouchSensitivity";
private static final String COMMAND_PATH = "/sys/class/sec/tsp/cmd";
private static final String COMMAND_LIST_PATH = "/sys/class/sec/tsp/cmd_list";
private static final String COMMAND_RESULT_PATH = "/sys/class/sec/tsp/cmd_result";
private static final String GLOVE_MODE = "glove_mode";
private static final String GLOVE_MODE_ENABLE = "glove_mode,1";
private static final String GLOVE_MODE_DISABLE = "glove_mode,0";
private static final String STATUS_OK = ":OK";
/**
* Whether device supports high touch sensitivity.
*
* @return boolean Supported devices must return always true
*/
public static boolean isSupported() {
if (!FileUtils.isFileWritable(COMMAND_PATH) ||
!FileUtils.isFileReadable(COMMAND_LIST_PATH) ||
!FileUtils.isFileReadable(COMMAND_RESULT_PATH)) {
return false;
}
BufferedReader reader = null;
try {
String currentLine;
reader = new BufferedReader(new FileReader(COMMAND_LIST_PATH));
while ((currentLine = reader.readLine()) != null) {
if (GLOVE_MODE.equals(currentLine)) {
return true;
}
}
} catch (IOException e) {
Log.e(TAG, "Could not read from file " + COMMAND_LIST_PATH, e);
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
// Ignore exception, no recovery possible
}
}
}
return false;
}
/** This method returns the current activation status of high touch sensitivity
*
* @return boolean Must be false if high touch sensitivity is not supported or not activated,
* or the operation failed while reading the status; true in any other case.
*/
public static boolean isEnabled() {
return (GLOVE_MODE_ENABLE + STATUS_OK).equals(FileUtils.readOneLine(COMMAND_RESULT_PATH));
}
/**
* This method allows to setup high touch sensitivity status.
*
* @param status The new high touch sensitivity status
* @return boolean Must be false if high touch sensitivity is not supported or the operation
* failed; true in any other case.
*/
public static boolean setEnabled(boolean status) {
return FileUtils.writeLine(COMMAND_PATH, status ? GLOVE_MODE_ENABLE : GLOVE_MODE_DISABLE);
}
}
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