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      1 /*
      2  * Copyright (C) 2014 Google Inc. All Rights Reserved.
      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.example.android.wearable.speedtracker.ui;
     18 
     19 import android.content.Context;
     20 import android.graphics.drawable.GradientDrawable;
     21 import android.support.wearable.view.WearableListView;
     22 import android.util.AttributeSet;
     23 import android.widget.ImageView;
     24 import android.widget.LinearLayout;
     25 import android.widget.TextView;
     26 
     27 import com.example.android.wearable.speedtracker.R;
     28 
     29 /**
     30  * A simple extension of the {@link android.widget.LinearLayout} to represent a single item in a
     31  * {@link android.support.wearable.view.WearableListView}.
     32  */
     33 public class SpeedPickerLayout extends LinearLayout
     34         implements WearableListView.OnCenterProximityListener {
     35 
     36     private final float mFadedTextAlpha;
     37     private final int mFadedCircleColor;
     38     private final int mChosenCircleColor;
     39     private ImageView mCircle;
     40     private TextView mName;
     41 
     42     public SpeedPickerLayout(Context context) {
     43         this(context, null);
     44     }
     45 
     46     public SpeedPickerLayout(Context context, AttributeSet attrs) {
     47         this(context, attrs, 0);
     48     }
     49 
     50     public SpeedPickerLayout(Context context, AttributeSet attrs,
     51             int defStyle) {
     52         super(context, attrs, defStyle);
     53         mFadedTextAlpha = getResources()
     54                 .getInteger(R.integer.action_text_faded_alpha) / 100f;
     55         mFadedCircleColor = getResources().getColor(R.color.grey);
     56         mChosenCircleColor = getResources().getColor(R.color.blue);
     57     }
     58 
     59     // Get references to the icon and text in the item layout definiton
     60     @Override
     61     protected void onFinishInflate() {
     62         super.onFinishInflate();
     63         mCircle = (ImageView) findViewById(R.id.circle);
     64         mName = (TextView) findViewById(R.id.name);
     65     }
     66 
     67     @Override
     68     public void onCenterPosition(boolean animate) {
     69         mName.setAlpha(1f);
     70         ((GradientDrawable) mCircle.getDrawable()).setColor(mChosenCircleColor);
     71     }
     72 
     73     @Override
     74     public void onNonCenterPosition(boolean animate) {
     75         ((GradientDrawable) mCircle.getDrawable()).setColor(mFadedCircleColor);
     76         mName.setAlpha(mFadedTextAlpha);
     77 
     78     }
     79 }
     80