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      1 /*
      2  * Copyright (C) 2017 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.annotation.Nullable;
     20 import android.content.Context;
     21 import android.graphics.Color;
     22 import android.graphics.ColorFilter;
     23 import android.graphics.PorterDuff;
     24 import android.graphics.PorterDuffColorFilter;
     25 import android.support.annotation.VisibleForTesting;
     26 import android.util.AttributeSet;
     27 import android.widget.ImageView;
     28 
     29 import com.android.settings.R;
     30 import com.android.settings.Utils;
     31 import com.android.settingslib.graph.BatteryMeterDrawableBase;
     32 
     33 public class BatteryMeterView extends ImageView {
     34     @VisibleForTesting
     35     BatteryMeterDrawable mDrawable;
     36     @VisibleForTesting
     37     ColorFilter mErrorColorFilter;
     38     @VisibleForTesting
     39     ColorFilter mAccentColorFilter;
     40 
     41     public BatteryMeterView(Context context) {
     42         this(context, null, 0);
     43     }
     44 
     45     public BatteryMeterView(Context context, @Nullable AttributeSet attrs) {
     46         this(context, attrs, 0);
     47     }
     48 
     49     public BatteryMeterView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
     50         super(context, attrs, defStyleAttr);
     51 
     52         final int frameColor = context.getColor(R.color.meter_background_color);
     53         mAccentColorFilter = new PorterDuffColorFilter(
     54                 Utils.getColorAttr(context, android.R.attr.colorAccent), PorterDuff.Mode.SRC_IN);
     55         mErrorColorFilter = new PorterDuffColorFilter(
     56                 context.getColor(R.color.battery_icon_color_error), PorterDuff.Mode.SRC_IN);
     57 
     58         mDrawable = new BatteryMeterDrawable(context, frameColor);
     59         mDrawable.setShowPercent(false);
     60         mDrawable.setBatteryColorFilter(mAccentColorFilter);
     61         mDrawable.setWarningColorFilter(
     62                 new PorterDuffColorFilter(Color.WHITE, PorterDuff.Mode.SRC_IN));
     63         setImageDrawable(mDrawable);
     64     }
     65 
     66     public void setBatteryLevel(int level) {
     67         mDrawable.setBatteryLevel(level);
     68         if (level < mDrawable.getCriticalLevel()) {
     69             mDrawable.setBatteryColorFilter(mErrorColorFilter);
     70         } else {
     71             mDrawable.setBatteryColorFilter(mAccentColorFilter);
     72         }
     73     }
     74 
     75     public int getBatteryLevel() {
     76         return mDrawable.getBatteryLevel();
     77     }
     78 
     79     public void setCharging(boolean charging) {
     80         mDrawable.setCharging(charging);
     81         postInvalidate();
     82     }
     83 
     84     public boolean getCharging() {
     85         return mDrawable.getCharging();
     86     }
     87 
     88     public static class BatteryMeterDrawable extends BatteryMeterDrawableBase {
     89         private final int mIntrinsicWidth;
     90         private final int mIntrinsicHeight;
     91 
     92         public BatteryMeterDrawable(Context context, int frameColor) {
     93             super(context, frameColor);
     94 
     95             mIntrinsicWidth = context.getResources()
     96                     .getDimensionPixelSize(R.dimen.battery_meter_width);
     97             mIntrinsicHeight = context.getResources()
     98                     .getDimensionPixelSize(R.dimen.battery_meter_height);
     99         }
    100 
    101         @Override
    102         public int getIntrinsicWidth() {
    103             return mIntrinsicWidth;
    104         }
    105 
    106         @Override
    107         public int getIntrinsicHeight() {
    108             return mIntrinsicHeight;
    109         }
    110 
    111         public void setWarningColorFilter(@Nullable ColorFilter colorFilter) {
    112             mWarningTextPaint.setColorFilter(colorFilter);
    113         }
    114 
    115         public void setBatteryColorFilter(@Nullable ColorFilter colorFilter) {
    116             mFramePaint.setColorFilter(colorFilter);
    117             mBatteryPaint.setColorFilter(colorFilter);
    118             mBoltPaint.setColorFilter(colorFilter);
    119         }
    120     }
    121 
    122 }
    123