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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.systemui.settings;
     18 
     19 import android.app.Activity;
     20 import android.os.Bundle;
     21 import android.view.ContextThemeWrapper;
     22 import android.view.Gravity;
     23 import android.view.KeyEvent;
     24 import android.view.LayoutInflater;
     25 import android.view.View;
     26 import android.view.Window;
     27 import android.view.WindowManager;
     28 import android.widget.ImageView;
     29 
     30 import com.android.internal.logging.MetricsLogger;
     31 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     32 import com.android.systemui.R;
     33 
     34 /** A dialog that provides controls for adjusting the screen brightness. */
     35 public class BrightnessDialog extends Activity {
     36 
     37     private BrightnessController mBrightnessController;
     38 
     39     @Override
     40     protected void onCreate(Bundle savedInstanceState) {
     41         super.onCreate(savedInstanceState);
     42 
     43         final Window window = getWindow();
     44 
     45         window.setGravity(Gravity.TOP);
     46         window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
     47         window.requestFeature(Window.FEATURE_NO_TITLE);
     48 
     49         // Use a dialog theme as the activity theme, but inflate the content as
     50         // the QS content.
     51         ContextThemeWrapper themedContext = new ContextThemeWrapper(this,
     52                 com.android.internal.R.style.Theme_DeviceDefault_QuickSettings);
     53         View v = LayoutInflater.from(themedContext).inflate(
     54                 R.layout.quick_settings_brightness_dialog, null);
     55         setContentView(v);
     56 
     57         final ImageView icon = findViewById(R.id.brightness_icon);
     58         final ToggleSliderView slider = findViewById(R.id.brightness_slider);
     59         mBrightnessController = new BrightnessController(this, icon, slider);
     60     }
     61 
     62     @Override
     63     protected void onStart() {
     64         super.onStart();
     65         mBrightnessController.registerCallbacks();
     66         MetricsLogger.visible(this, MetricsEvent.BRIGHTNESS_DIALOG);
     67     }
     68 
     69     @Override
     70     protected void onStop() {
     71         super.onStop();
     72         MetricsLogger.hidden(this, MetricsEvent.BRIGHTNESS_DIALOG);
     73         mBrightnessController.unregisterCallbacks();
     74     }
     75 
     76     @Override
     77     public boolean onKeyDown(int keyCode, KeyEvent event) {
     78         if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN
     79                 || keyCode == KeyEvent.KEYCODE_VOLUME_UP
     80                 || keyCode == KeyEvent.KEYCODE_VOLUME_MUTE) {
     81             finish();
     82         }
     83 
     84         return super.onKeyDown(keyCode, event);
     85     }
     86 }
     87