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.support.annotation.IntDef; 22 import android.util.AttributeSet; 23 import android.util.Pair; 24 import android.view.View; 25 import android.widget.ImageView; 26 import android.widget.LinearLayout; 27 import com.android.car.hvac.R; 28 29 import java.util.HashMap; 30 import java.util.Map; 31 32 /** 33 * A set of buttons that controls the fan direction of the vehicle. Turning on one state will 34 * turn off the other states. 35 */ 36 public class FanDirectionButtons extends LinearLayout { 37 public static final int FAN_DIRECTION_FACE = 0; 38 public static final int FAN_DIRECTION_FACE_FLOOR = 1; 39 public static final int FAN_DIRECTION_FLOOR = 2; 40 public static final int FAN_DIRECTION_FLOOR_DEFROSTER = 3; 41 42 @IntDef({FAN_DIRECTION_FACE, FAN_DIRECTION_FACE_FLOOR, 43 FAN_DIRECTION_FLOOR, FAN_DIRECTION_FLOOR_DEFROSTER}) 44 public @interface FanDirection {} 45 46 /** 47 * A listener that is notified when a fan direction button has been clicked. 48 */ 49 public interface FanDirectionClickListener { 50 void onFanDirectionClicked(@FanDirection int direction); 51 } 52 53 private static final float UNSELECTED_BUTTON_ALPHA = 0.5f; 54 private static final float SELECTED_BUTTON_ALPHA = 1.0f; 55 56 private final Map<ImageView, Pair<Drawable, Drawable>> mFanMap = new HashMap<>(); 57 private final Map<ImageView, Integer> mControlMap = new HashMap<>(); 58 59 private FanDirectionClickListener mListener; 60 61 public FanDirectionButtons(Context context) { 62 super(context); 63 init(); 64 } 65 66 public FanDirectionButtons(Context context, AttributeSet attrs) { 67 super(context, attrs); 68 init(); 69 } 70 71 public FanDirectionButtons(Context context, AttributeSet attrs, int defStyleAttr) { 72 super(context, attrs, defStyleAttr); 73 init(); 74 } 75 76 public void setFanDirectionClickListener(FanDirectionClickListener listener) { 77 mListener = listener; 78 } 79 80 private void init() { 81 inflate(getContext(), R.layout.fan_direction, this); 82 } 83 84 @Override 85 protected void onFinishInflate() { 86 super.onFinishInflate(); 87 Resources res = getResources(); 88 89 setOrientation(HORIZONTAL); 90 91 ImageView directionButton1 = (ImageView) findViewById(R.id.direction_1); 92 ImageView directionButton2 = (ImageView) findViewById(R.id.direction_2); 93 ImageView directionButton3 = (ImageView) findViewById(R.id.direction_3); 94 ImageView directionButton4 = (ImageView) findViewById(R.id.direction_4); 95 96 Drawable directionOn1 = res.getDrawable(R.drawable.ic_fan_direction_1_on); 97 Drawable directionOn2 = res.getDrawable(R.drawable.ic_fan_direction_2_on); 98 Drawable directionOn3 = res.getDrawable(R.drawable.ic_fan_direction_3_on); 99 Drawable directionOn4 = res.getDrawable(R.drawable.ic_fan_direction_4_on); 100 101 Drawable directionOff1 = res.getDrawable(R.drawable.ic_fan_direction_1_off); 102 Drawable directionOff2 = res.getDrawable(R.drawable.ic_fan_direction_2_off); 103 Drawable directionOff3 = res.getDrawable(R.drawable.ic_fan_direction_3_off); 104 Drawable directionOff4 = res.getDrawable(R.drawable.ic_fan_direction_4_off); 105 106 mFanMap.put(directionButton1, new Pair(directionOn1, directionOff1)); 107 mFanMap.put(directionButton2, new Pair(directionOn2, directionOff2)); 108 mFanMap.put(directionButton3, new Pair(directionOn3, directionOff3)); 109 mFanMap.put(directionButton4, new Pair(directionOn4, directionOff4)); 110 111 mControlMap.put(directionButton1, FAN_DIRECTION_FACE); 112 mControlMap.put(directionButton2, FAN_DIRECTION_FACE_FLOOR); 113 mControlMap.put(directionButton3, FAN_DIRECTION_FLOOR); 114 mControlMap.put(directionButton4, FAN_DIRECTION_FLOOR_DEFROSTER); 115 116 for (ImageView v : mFanMap.keySet()) { 117 v.setOnClickListener(mFanDirectionClickListener); 118 } 119 } 120 121 private final OnClickListener mFanDirectionClickListener = new OnClickListener() { 122 @Override 123 public void onClick(View v) { 124 resetFanToOff(); 125 v.setAlpha(SELECTED_BUTTON_ALPHA); 126 if (mFanMap.containsKey(v)) { 127 ((ImageView) v).setImageDrawable(mFanMap.get(v).first); 128 v.setAlpha(SELECTED_BUTTON_ALPHA); 129 @FanDirection int direction = mControlMap.get(v); 130 mListener.onFanDirectionClicked(direction); 131 } 132 } 133 }; 134 135 private void resetFanToOff() { 136 for (Map.Entry<ImageView, Pair<Drawable, Drawable>> entry : mFanMap.entrySet()) { 137 ImageView button = entry.getKey(); 138 button.setImageDrawable(entry.getValue().second); 139 button.setAlpha(UNSELECTED_BUTTON_ALPHA); 140 } 141 } 142 } 143