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/*
* Copyright (c) 2015, Sergii Pylypenko
* (c) 2018, Joe Maples
* (c) 2018, Adin Kwok
* (c) 2018, CarbonROM
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of screen-dimmer-pixel-filter nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
package com.android.systemui.smartpixels;
import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_TRUSTED_OVERLAY;
import android.Manifest;
import android.app.Service;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.PixelFormat;
import android.graphics.Point;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.os.Handler;
import android.os.IBinder;
import android.os.PowerManager;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageView;
import com.android.systemui.R;
public class SmartPixelsService extends Service {
public static final String LOG = "SmartPixelsService";
private WindowManager windowManager;
private ImageView view = null;
private Bitmap bmp;
private boolean destroyed = false;
public static boolean running = false;
private int startCounter = 0;
private Context mContext;
// Pixel Filter Settings
private int mPattern = 3;
private int mShiftTimeout = 4;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
running = true;
mContext = this;
updateSettings();
Log.d(LOG, "Service started");
startFilter();
}
public void startFilter() {
if (view != null) {
return;
}
windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
view = new ImageView(this);
DisplayMetrics metrics = new DisplayMetrics();
windowManager.getDefaultDisplay().getRealMetrics(metrics);
bmp = Bitmap.createBitmap(Grids.GridSideSize, Grids.GridSideSize, Bitmap.Config.ARGB_4444);
updatePattern();
BitmapDrawable draw = new BitmapDrawable(bmp);
draw.setTileModeXY(Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
draw.setFilterBitmap(false);
draw.setAntiAlias(false);
draw.setTargetDensity(metrics.densityDpi);
view.setBackground(draw);
WindowManager.LayoutParams params = getLayoutParams();
params.privateFlags |= PRIVATE_FLAG_TRUSTED_OVERLAY;
try {
windowManager.addView(view, params);
} catch (Exception e) {
running = false;
view = null;
return;
}
startCounter++;
final int handlerStartCounter = startCounter;
final Handler handler = new Handler();
final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
handler.postDelayed(new Runnable() {
@Override
public void run() {
if (view == null || destroyed || handlerStartCounter != startCounter) {
return;
} else if (pm.isInteractive()) {
updatePattern();
view.invalidate();
}
if (!destroyed) {
handler.postDelayed(this, Grids.ShiftTimeouts[mShiftTimeout]);
}
}
}, Grids.ShiftTimeouts[mShiftTimeout]);
}
public void stopFilter() {
if (view == null) {
return;
}
startCounter++;
windowManager.removeView(view);
view = null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
@Override
public void onDestroy() {
super.onDestroy();
destroyed = true;
stopFilter();
Log.d(LOG, "Service stopped");
running = false;
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
Log.d(LOG, "Screen orientation changed, updating window layout");
WindowManager.LayoutParams params = getLayoutParams();
windowManager.updateViewLayout(view, params);
}
private WindowManager.LayoutParams getLayoutParams()
{
Point displaySize = new Point();
windowManager.getDefaultDisplay().getRealSize(displaySize);
Point windowSize = new Point();
windowManager.getDefaultDisplay().getRealSize(windowSize);
Resources res = getResources();
int mStatusBarHeight = res.getDimensionPixelOffset(R.dimen.status_bar_height);
displaySize.x += displaySize.x - windowSize.x + (mStatusBarHeight * 2);
displaySize.y += displaySize.y - windowSize.y + (mStatusBarHeight * 2);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
displaySize.x,
displaySize.y,
0,
0,
WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE |
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN |
WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN |
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS |
WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
PixelFormat.TRANSPARENT
);
// Use the rounded corners overlay to hide it from screenshots. See 132c9f514.
params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_IS_ROUNDED_CORNERS_OVERLAY;
params.dimAmount = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_NONE;
params.systemUiVisibility = View.SYSTEM_UI_FLAG_LOW_PROFILE;
return params;
}
private int getShift() {
long shift = (System.currentTimeMillis() / Grids.ShiftTimeouts[mShiftTimeout]) % Grids.GridSize;
return Grids.GridShift[(int)shift];
}
private void updatePattern() {
int shift = getShift();
int shiftX = shift % Grids.GridSideSize;
int shiftY = shift / Grids.GridSideSize;
for (int i = 0; i < Grids.GridSize; i++) {
int x = (i + shiftX) % Grids.GridSideSize;
int y = ((i / Grids.GridSideSize) + shiftY) % Grids.GridSideSize;
int color = (Grids.Patterns[mPattern][i] == 0) ? Color.TRANSPARENT : Color.BLACK;
bmp.setPixel(x, y, color);
}
}
private void updateSettings() {
mPattern = Settings.System.getIntForUser(
mContext.getContentResolver(), Settings.System.SMART_PIXELS_PATTERN,
5, UserHandle.USER_CURRENT);
mShiftTimeout = Settings.System.getIntForUser(
mContext.getContentResolver(), Settings.System.SMART_PIXELS_SHIFT_TIMEOUT,
4, UserHandle.USER_CURRENT);
}
}
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