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      1 /*
      2  * Copyright (C) 2009 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.settings.fuelgauge;
     18 
     19 import android.content.Context;
     20 import android.graphics.drawable.ColorDrawable;
     21 import android.graphics.drawable.Drawable;
     22 import android.preference.Preference;
     23 import android.view.View;
     24 import android.widget.ProgressBar;
     25 import android.widget.TextView;
     26 
     27 import com.android.settings.R;
     28 import com.android.settings.Utils;
     29 
     30 /**
     31  * Custom preference for displaying power consumption as a bar and an icon on
     32  * the left for the subsystem/app type.
     33  */
     34 public class PowerGaugePreference extends Preference {
     35     private BatteryEntry mInfo;
     36     private int mProgress;
     37     private CharSequence mProgressText;
     38     private final CharSequence mContentDescription;
     39 
     40     public PowerGaugePreference(Context context, Drawable icon, CharSequence contentDescription,
     41             BatteryEntry info) {
     42         super(context);
     43         setLayoutResource(R.layout.preference_app_percentage);
     44         setIcon(icon != null ? icon : new ColorDrawable(0));
     45         mInfo = info;
     46         mContentDescription = contentDescription;
     47     }
     48 
     49     public void setPercent(double percentOfMax, double percentOfTotal) {
     50         mProgress = (int) Math.ceil(percentOfMax);
     51         mProgressText = Utils.formatPercentage((int) (percentOfTotal + 0.5));
     52         notifyChanged();
     53     }
     54 
     55     BatteryEntry getInfo() {
     56         return mInfo;
     57     }
     58 
     59     @Override
     60     protected void onBindView(View view) {
     61         super.onBindView(view);
     62 
     63         final ProgressBar progress = (ProgressBar) view.findViewById(android.R.id.progress);
     64         progress.setProgress(mProgress);
     65 
     66         final TextView text1 = (TextView) view.findViewById(android.R.id.text1);
     67         text1.setText(mProgressText);
     68 
     69         if (mContentDescription != null) {
     70             final TextView titleView = (TextView) view.findViewById(android.R.id.title);
     71             titleView.setContentDescription(mContentDescription);
     72         }
     73     }
     74 }
     75