1 /* 2 * Copyright (c) 2016, 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 package com.android.car.hvac.ui; 17 18 import android.content.Context; 19 import android.content.res.Resources; 20 import android.graphics.drawable.Drawable; 21 import android.util.AttributeSet; 22 import android.view.View; 23 import android.widget.ImageView; 24 25 import androidx.annotation.IntDef; 26 27 import com.android.car.hvac.R; 28 29 /** 30 * A seat warmer button that has 3 heating levels. 31 */ 32 public class SeatWarmerButton extends ImageView { 33 public static final int HEAT_OFF = 0; 34 public static final int HEAT_LEVEL_ONE = 1; 35 public static final int HEAT_LEVEL_TWO = 2; 36 public static final int HEAT_LEVEL_THREE = 3; 37 38 public interface SeatWarmerButtonClickListener{ onSeatWarmerButtonClicked(@eatingLevel int level)39 void onSeatWarmerButtonClicked(@HeatingLevel int level); 40 } 41 42 @IntDef({HEAT_OFF, HEAT_LEVEL_ONE, HEAT_LEVEL_TWO, HEAT_LEVEL_THREE}) 43 public @interface HeatingLevel {} 44 45 private @HeatingLevel int mCurrentHeatSetting; 46 47 private final Drawable mStateDrawables[] = new Drawable[4]; 48 49 private SeatWarmerButtonClickListener mListener; 50 SeatWarmerButton(Context context)51 public SeatWarmerButton(Context context) { 52 super(context); 53 init(); 54 } 55 SeatWarmerButton(Context context, AttributeSet attrs)56 public SeatWarmerButton(Context context, AttributeSet attrs) { 57 super(context, attrs); 58 init(); 59 } 60 SeatWarmerButton(Context context, AttributeSet attrs, int defStyleAttr)61 public SeatWarmerButton(Context context, AttributeSet attrs, int defStyleAttr) { 62 super(context, attrs, defStyleAttr); 63 init(); 64 } 65 init()66 private void init() { 67 Resources res = getResources(); 68 mStateDrawables[0] = res.getDrawable(R.drawable.ic_seat_heat_off); 69 mStateDrawables[1] = res.getDrawable(R.drawable.ic_seat_heat_level_1); 70 mStateDrawables[2] = res.getDrawable(R.drawable.ic_seat_heat_level_2); 71 mStateDrawables[3] = res.getDrawable(R.drawable.ic_seat_heat_level_3); 72 73 setOnClickListener(new OnClickListener() { 74 @Override 75 public void onClick(View v) { 76 mCurrentHeatSetting = getNextHeatSetting(mCurrentHeatSetting); 77 Drawable d = getDrawableForState(mCurrentHeatSetting); 78 setImageDrawable(d); 79 if (mListener != null) { 80 mListener.onSeatWarmerButtonClicked(mCurrentHeatSetting); 81 } 82 } 83 }); 84 } 85 setSeatWarmerClickListener(SeatWarmerButtonClickListener listener)86 public void setSeatWarmerClickListener(SeatWarmerButtonClickListener listener) { 87 mListener = listener; 88 } 89 setHeatLevel(@eatingLevel int level)90 public void setHeatLevel(@HeatingLevel int level) { 91 mCurrentHeatSetting = level; 92 setImageDrawable(getDrawableForState(mCurrentHeatSetting)); 93 } 94 getDrawableForState(@eatingLevel int level)95 private Drawable getDrawableForState(@HeatingLevel int level) { 96 switch (level) { 97 case HEAT_LEVEL_ONE: 98 return mStateDrawables[1]; 99 case HEAT_LEVEL_TWO: 100 return mStateDrawables[2]; 101 case HEAT_LEVEL_THREE: 102 return mStateDrawables[3]; 103 case HEAT_OFF: 104 default: 105 return mStateDrawables[0]; 106 } 107 } 108 getNextHeatSetting(@eatingLevel int level)109 private @HeatingLevel int getNextHeatSetting(@HeatingLevel int level) { 110 switch (level) { 111 case HEAT_OFF: 112 return HEAT_LEVEL_ONE; 113 case HEAT_LEVEL_ONE: 114 return HEAT_LEVEL_TWO; 115 case HEAT_LEVEL_TWO: 116 return HEAT_LEVEL_THREE; 117 case HEAT_LEVEL_THREE: 118 return HEAT_OFF; 119 default: 120 return HEAT_OFF; 121 } 122 } 123 } 124