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/*
* Copyright (C) 2015 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.lockclock.preference;
import android.app.AlertDialog;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.UserHandle;
import android.preference.DialogPreference;
import android.provider.Settings;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.TextView;
import com.cyanogenmod.lockclock.ClockWidgetProvider;
import com.cyanogenmod.lockclock.R;
import com.cyanogenmod.lockclock.misc.Constants;
/**
* Preference for selection of background transparency for the clock widget
*/
public class BackgroundTransparency extends DialogPreference {
private static final String TAG = "BackgroundTransparency";
private final Context mContext;
private TransparencySeekBar mBackgroundTransparency;
private int mOriginalBackgroundTransparency;
private final int mDefaultBackgroundTransparency;
public BackgroundTransparency(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
mDefaultBackgroundTransparency = Constants.DEFAULT_BACKGROUND_TRANSPARENCY;
setDialogLayoutResource(R.layout.background_transparency);
}
@Override
protected void onBindDialogView(View view) {
super.onBindDialogView(view);
SharedPreferences getPrefs = mContext.getSharedPreferences(Constants.PREF_NAME, Context.MODE_PRIVATE);
mOriginalBackgroundTransparency = getPrefs.getInt(Constants.CLOCK_BACKGROUND_TRANSPARENCY,
Constants.DEFAULT_BACKGROUND_TRANSPARENCY);
SeekBar trans = (SeekBar) view.findViewById(R.id.background_transparency_seekbar);
mBackgroundTransparency = new TransparencySeekBar(trans);
mBackgroundTransparency.setProgress(mOriginalBackgroundTransparency);
}
@Override
protected void onDialogClosed(boolean positiveResult) {
super.onDialogClosed(positiveResult);
updateTransparency(positiveResult);
}
@Override
protected Parcelable onSaveInstanceState() {
final Parcelable superState = super.onSaveInstanceState();
if (getDialog() == null || !getDialog().isShowing()) {
return superState;
}
// Save the dialog state
final SavedState myState = new SavedState(superState);
myState.originalBackgroundTransparency = mOriginalBackgroundTransparency;
myState.currentBackgroundTransparency = mBackgroundTransparency.getProgress();
// Restore the old state when the activity or dialog is being paused
updateTransparency(false);
return myState;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state == null || !state.getClass().equals(SavedState.class)) {
// Didn't save state for us in onSaveInstanceState
super.onRestoreInstanceState(state);
return;
}
SavedState myState = (SavedState) state;
super.onRestoreInstanceState(myState.getSuperState());
mOriginalBackgroundTransparency = myState.originalBackgroundTransparency;
mBackgroundTransparency.setProgress(myState.currentBackgroundTransparency);
updateTransparency(true);
}
private static class SavedState extends BaseSavedState {
int originalBackgroundTransparency;
int currentBackgroundTransparency;
public SavedState(Parcelable superState) {
super(superState);
}
public SavedState(Parcel source) {
super(source);
originalBackgroundTransparency = source.readInt();
currentBackgroundTransparency = source.readInt();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
super.writeToParcel(dest, flags);
dest.writeInt(originalBackgroundTransparency);
dest.writeInt(currentBackgroundTransparency);
}
public static final Parcelable.Creator<SavedState> CREATOR =
new Parcelable.Creator<SavedState>() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
private void updateTransparency(boolean accept) {
int trans = accept ? mBackgroundTransparency.getProgress() : mOriginalBackgroundTransparency;
callChangeListener(trans);
SharedPreferences getPrefs = mContext.getSharedPreferences(Constants.PREF_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor edit = getPrefs.edit();
edit.putInt(Constants.CLOCK_BACKGROUND_TRANSPARENCY, trans);
edit.apply();
}
private class TransparencySeekBar implements SeekBar.OnSeekBarChangeListener {
private final SeekBar mSeekBar;
private static final int MIN = 0;
private static final int MAX = 255;
private static final int STEP = 5;
public TransparencySeekBar(SeekBar seekBar) {
mSeekBar = seekBar;
mSeekBar.setMax((MAX - MIN) / STEP);
mSeekBar.setOnSeekBarChangeListener(this);
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (fromUser) {
updateTransparency(true);
}
}
public void setProgress(int progress) {
int p = Math.max(progress, MIN) - MIN;
mSeekBar.setProgress(Math.round((float) p / STEP));
}
public int getProgress() {
return mSeekBar.getProgress() * STEP + MIN;
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// Do nothing here
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// Do nothing here
}
}
}
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