1 /*
2  * Copyright (C) 2018 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.charging;
18 
19 import android.animation.AnimatorSet;
20 import android.animation.ObjectAnimator;
21 import android.animation.ValueAnimator;
22 import android.content.Context;
23 import android.graphics.drawable.Animatable;
24 import android.util.AttributeSet;
25 import android.view.ContextThemeWrapper;
26 import android.view.animation.PathInterpolator;
27 import android.widget.FrameLayout;
28 import android.widget.ImageView;
29 import android.widget.TextView;
30 
31 import com.android.systemui.Interpolators;
32 import com.android.systemui.R;
33 
34 import java.text.NumberFormat;
35 
36 /**
37  * @hide
38  */
39 public class WirelessChargingLayout extends FrameLayout {
40     private final static int UNKNOWN_BATTERY_LEVEL = -1;
41 
WirelessChargingLayout(Context context)42     public WirelessChargingLayout(Context context) {
43         super(context);
44         init(context, null, false);
45     }
46 
WirelessChargingLayout(Context context, int batteryLevel, boolean isDozing)47     public WirelessChargingLayout(Context context, int batteryLevel, boolean isDozing) {
48         super(context);
49         init(context, null, batteryLevel, isDozing);
50     }
51 
WirelessChargingLayout(Context context, AttributeSet attrs)52     public WirelessChargingLayout(Context context, AttributeSet attrs) {
53         super(context, attrs);
54         init(context, attrs, false);
55     }
56 
init(Context c, AttributeSet attrs, boolean isDozing)57     private void init(Context c, AttributeSet attrs, boolean isDozing) {
58         init(c, attrs, -1, false);
59     }
60 
init(Context context, AttributeSet attrs, int batteryLevel, boolean isDozing)61     private void init(Context context, AttributeSet attrs, int batteryLevel, boolean isDozing) {
62         final int mBatteryLevel = batteryLevel;
63 
64         // set style based on background
65         int style = R.style.ChargingAnim_WallpaperBackground;
66         if (isDozing) {
67             style = R.style.ChargingAnim_DarkBackground;
68         }
69 
70         inflate(new ContextThemeWrapper(context, style), R.layout.wireless_charging_layout, this);
71 
72         // where the circle animation occurs:
73         final ImageView chargingView = findViewById(R.id.wireless_charging_view);
74         final Animatable chargingAnimation = (Animatable) chargingView.getDrawable();
75 
76         // amount of battery:
77         final TextView mPercentage = findViewById(R.id.wireless_charging_percentage);
78 
79         if (batteryLevel != UNKNOWN_BATTERY_LEVEL) {
80             mPercentage.setText(NumberFormat.getPercentInstance().format(mBatteryLevel / 100f));
81             mPercentage.setAlpha(0);
82         }
83 
84         final long chargingAnimationFadeStartOffset = (long) context.getResources().getInteger(
85                 R.integer.wireless_charging_fade_offset);
86         final long chargingAnimationFadeDuration = (long) context.getResources().getInteger(
87                 R.integer.wireless_charging_fade_duration);
88         final float batteryLevelTextSizeStart = context.getResources().getFloat(
89                 R.dimen.wireless_charging_anim_battery_level_text_size_start);
90         final float batteryLevelTextSizeEnd = context.getResources().getFloat(
91                 R.dimen.wireless_charging_anim_battery_level_text_size_end);
92 
93         // Animation Scale: battery percentage text scales from 0% to 100%
94         ValueAnimator textSizeAnimator = ObjectAnimator.ofFloat(mPercentage, "textSize",
95                 batteryLevelTextSizeStart, batteryLevelTextSizeEnd);
96         textSizeAnimator.setInterpolator(new PathInterpolator(0, 0, 0, 1));
97         textSizeAnimator.setDuration((long) context.getResources().getInteger(
98                 R.integer.wireless_charging_battery_level_text_scale_animation_duration));
99 
100         // Animation Opacity: battery percentage text transitions from 0 to 1 opacity
101         ValueAnimator textOpacityAnimator = ObjectAnimator.ofFloat(mPercentage, "alpha", 0, 1);
102         textOpacityAnimator.setInterpolator(Interpolators.LINEAR);
103         textOpacityAnimator.setDuration((long) context.getResources().getInteger(
104                 R.integer.wireless_charging_battery_level_text_opacity_duration));
105         textOpacityAnimator.setStartDelay((long) context.getResources().getInteger(
106                 R.integer.wireless_charging_anim_opacity_offset));
107 
108         // Animation Opacity: battery percentage text fades from 1 to 0 opacity
109         ValueAnimator textFadeAnimator = ObjectAnimator.ofFloat(mPercentage, "alpha", 1, 0);
110         textFadeAnimator.setDuration(chargingAnimationFadeDuration);
111         textFadeAnimator.setInterpolator(Interpolators.LINEAR);
112         textFadeAnimator.setStartDelay(chargingAnimationFadeStartOffset);
113 
114         // play all animations together
115         AnimatorSet animatorSet = new AnimatorSet();
116         animatorSet.playTogether(textSizeAnimator, textOpacityAnimator, textFadeAnimator);
117         chargingAnimation.start();
118         animatorSet.start();
119     }
120 }
121