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/*
* Copyright (C) 2013 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 com.cyanogenmod.settings.device;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.graphics.Color;
import android.graphics.LightingColorFilter;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.os.Bundle;
import android.os.Vibrator;
import android.preference.DialogPreference;
import android.preference.PreferenceManager;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Button;
import java.lang.Math;
import java.text.DecimalFormat;
/**
* Special preference type that allows configuration of vibrator intensity settings on Samsung devices
*/
public class VibratorTuningPreference extends DialogPreference implements SeekBar.OnSeekBarChangeListener {
private static final String TAG = "DeviceSettings_Vibrator";
private static String FILE_PATH = null;
private static int MAX_VALUE;
private static int WARNING_THRESHOLD;
private static int DEFAULT_VALUE;
private static int MIN_VALUE;
private Context mContext;
private SeekBar mSeekBar;
private TextView mValue;
private TextView mWarning;
private String mOriginalValue;
private Drawable mProgressDrawable;
private Drawable mProgressThumb;
private LightingColorFilter mRedFilter;
public VibratorTuningPreference(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
FILE_PATH = context.getResources().getString(R.string.vibrator_sysfs_file);
MAX_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_max_value));
WARNING_THRESHOLD = Integer.valueOf(context.getResources().getString(R.string.intensity_warning_threshold));
DEFAULT_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_default_value));
MIN_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_min_value));
setDialogLayoutResource(R.layout.preference_dialog_vibrator_tuning);
}
@Override
protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
builder.setNeutralButton(R.string.defaults_button, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
}
@Override
protected void onBindDialogView(View view) {
super.onBindDialogView(view);
mSeekBar = (SeekBar) view.findViewById(R.id.vibrator_seekbar);
mValue = (TextView) view.findViewById(R.id.vibrator_value);
mWarning = (TextView) view.findViewById(R.id.textWarn);
String strWarnMsg = getContext().getResources().getString(R.string.vibrator_warning, strengthToPercent(WARNING_THRESHOLD));
mWarning.setText(strWarnMsg);
Drawable progressDrawable = mSeekBar.getProgressDrawable();
if (progressDrawable instanceof LayerDrawable) {
LayerDrawable ld = (LayerDrawable) progressDrawable;
mProgressDrawable = ld.findDrawableByLayerId(android.R.id.progress);
}
mProgressThumb = mSeekBar.getThumb();
mRedFilter = new LightingColorFilter(Color.BLACK,
getContext().getResources().getColor(android.R.color.holo_red_light));
// Read the current value from sysfs in case user wants to dismiss his changes
mOriginalValue = Utils.readOneLine(FILE_PATH);
// Restore percent value from SharedPreferences object
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(mContext);
int percent = settings.getInt("percent", strengthToPercent(DEFAULT_VALUE));
mSeekBar.setOnSeekBarChangeListener(this);
mSeekBar.setProgress(Integer.valueOf(percent));
}
@Override
protected void showDialog(Bundle state) {
super.showDialog(state);
// can't use onPrepareDialogBuilder for this as we want the dialog
// to be kept open on click
AlertDialog d = (AlertDialog) getDialog();
Button defaultsButton = d.getButton(DialogInterface.BUTTON_NEUTRAL);
defaultsButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mSeekBar.setProgress(strengthToPercent(DEFAULT_VALUE));
}
});
}
@Override
protected void onDialogClosed(boolean positiveResult) {
super.onDialogClosed(positiveResult);
if (positiveResult) {
// Store percent value in SharedPreferences object
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(mContext);
SharedPreferences.Editor editor = settings.edit();
editor.putInt("percent", mSeekBar.getProgress());
editor.commit();
} else {
Utils.writeValue(FILE_PATH, String.valueOf(mOriginalValue));
}
}
public static void restore(Context context) {
FILE_PATH = context.getResources().getString(R.string.vibrator_sysfs_file);
if (!isSupported(FILE_PATH)) {
return;
}
MAX_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_max_value));
DEFAULT_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_default_value));
MIN_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_min_value));
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
int strength = percentToStrength(settings.getInt("percent", strengthToPercent(DEFAULT_VALUE)));
Log.d(TAG, "Restoring vibration setting: " + strength);
Utils.writeValue(FILE_PATH, String.valueOf(strength));
}
public static boolean isSupported(String filePath) {
return Utils.fileExists(filePath);
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
boolean shouldWarn = progress >= strengthToPercent(WARNING_THRESHOLD);
if (mProgressDrawable != null) {
mProgressDrawable.setColorFilter(shouldWarn ? mRedFilter : null);
}
if (mProgressThumb != null) {
mProgressThumb.setColorFilter(shouldWarn ? mRedFilter : null);
}
Utils.writeValue(FILE_PATH, String.valueOf(percentToStrength(progress)));
mValue.setText(String.format("%d%%", progress));
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// Do nothing
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
Vibrator vib = (Vibrator) getContext().getSystemService(Context.VIBRATOR_SERVICE);
vib.vibrate(200);
}
/**
* Convert vibrator strength to percent
*/
public static int strengthToPercent(int strength) {
double maxValue = MAX_VALUE;
double minValue = MIN_VALUE;
double percent = (strength - minValue) * (100 / (maxValue - minValue));
if (percent > 100)
percent = 100;
else if (percent < 0)
percent = 0;
return (int) percent;
}
/**
* Convert percent to vibrator strength
*/
public static int percentToStrength(int percent) {
int strength = Math.round((((MAX_VALUE - MIN_VALUE) * percent) / 100) + MIN_VALUE);
if (strength > MAX_VALUE)
strength = MAX_VALUE;
else if (strength < MIN_VALUE)
strength = MIN_VALUE;
return strength;
}
}
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