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      1 /*
      2  * Copyright (C) 2015 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.systemui.statusbar.car;
     17 
     18 import android.content.Context;
     19 import android.graphics.drawable.Drawable;
     20 import android.util.AttributeSet;
     21 import android.widget.ImageView;
     22 import android.widget.RelativeLayout;
     23 
     24 import com.android.keyguard.AlphaOptimizedImageButton;
     25 import com.android.systemui.R;
     26 
     27 /**
     28  * A wrapper view for a car navigation facet, which includes a button icon and a drop down icon.
     29  */
     30 public class CarNavigationButton extends RelativeLayout {
     31     private static final float SELECTED_ALPHA = 1;
     32     private static final float UNSELECTED_ALPHA = 0.7f;
     33 
     34     private AlphaOptimizedImageButton mIcon;
     35     private AlphaOptimizedImageButton mMoreIcon;
     36 
     37     public CarNavigationButton(Context context, AttributeSet attrs) {
     38         super(context, attrs);
     39     }
     40 
     41     @Override
     42     public void onFinishInflate() {
     43         super.onFinishInflate();
     44         mIcon = findViewById(R.id.car_nav_button_icon);
     45         mIcon.setScaleType(ImageView.ScaleType.CENTER);
     46         mIcon.setClickable(false);
     47         mIcon.setBackgroundColor(android.R.color.transparent);
     48         mIcon.setAlpha(UNSELECTED_ALPHA);
     49 
     50         mMoreIcon = findViewById(R.id.car_nav_button_more_icon);
     51         mMoreIcon.setClickable(false);
     52         mMoreIcon.setBackgroundColor(android.R.color.transparent);
     53         mMoreIcon.setVisibility(INVISIBLE);
     54         mMoreIcon.setImageDrawable(getContext().getDrawable(R.drawable.car_ic_arrow));
     55         mMoreIcon.setAlpha(UNSELECTED_ALPHA);
     56     }
     57 
     58     public void setResources(Drawable icon) {
     59         mIcon.setImageDrawable(icon);
     60     }
     61 
     62     public void setSelected(boolean selected, boolean showMoreIcon) {
     63         if (selected) {
     64             mMoreIcon.setVisibility(showMoreIcon ? VISIBLE : INVISIBLE);
     65             mMoreIcon.setAlpha(SELECTED_ALPHA);
     66             mIcon.setAlpha(SELECTED_ALPHA);
     67         } else {
     68             mMoreIcon.setVisibility(INVISIBLE);
     69             mIcon.setAlpha(UNSELECTED_ALPHA);
     70         }
     71     }
     72 }
     73