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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 
     17 package com.android.tv.menu;
     18 
     19 import android.R.integer;
     20 import android.animation.ValueAnimator;
     21 import android.content.Context;
     22 import android.text.TextUtils;
     23 import android.util.AttributeSet;
     24 import android.view.View;
     25 import android.widget.FrameLayout;
     26 import android.widget.ImageView;
     27 import android.widget.TextView;
     28 
     29 import com.android.tv.R;
     30 
     31 public class PlayControlsButton extends FrameLayout {
     32     private static final float ALPHA_ENABLED = 1.0f;
     33     private static final float ALPHA_DISABLED = 0.3f;
     34 
     35     private final ImageView mButton;
     36     private final ImageView mIcon;
     37     private final TextView mLabel;
     38     private final long mFocusAnimationTimeMs;
     39     private final int mIconColor;
     40     private int mIconFocusedColor;
     41 
     42     public PlayControlsButton(Context context) {
     43         this(context, null);
     44     }
     45 
     46     public PlayControlsButton(Context context, AttributeSet attrs) {
     47         this(context, attrs, 0);
     48     }
     49 
     50     public PlayControlsButton(Context context, AttributeSet attrs, int defStyleAttr) {
     51         this(context, attrs, defStyleAttr, 0);
     52     }
     53 
     54     public PlayControlsButton(Context context, AttributeSet attrs, int defStyleAttr,
     55             int defStyleRes) {
     56         super(context, attrs, defStyleAttr, defStyleRes);
     57         inflate(context, R.layout.play_controls_button, this);
     58         mButton = (ImageView) findViewById(R.id.button);
     59         mIcon = (ImageView) findViewById(R.id.icon);
     60         mLabel = (TextView) findViewById(R.id.label);
     61         mFocusAnimationTimeMs = context.getResources().getInteger(integer.config_shortAnimTime);
     62         mIconColor = context.getResources().getColor(R.color.play_controls_icon_color);
     63         mIconFocusedColor = mIconColor;
     64     }
     65 
     66     /**
     67      * Sets the resource ID of the image to be displayed in the center of this control.
     68      */
     69     public void setImageResId(int imageResId) {
     70         mIcon.setImageResource(imageResId);
     71         // Since on foucus changing, icons' color should be switched with animation,
     72         // as a result, selectors cannot be used to switch colors in this case.
     73         mIcon.getDrawable().setTint(hasFocus() ? mIconFocusedColor : mIconColor);
     74     }
     75 
     76     /**
     77      * Sets an action which is to be run when the button is clicked.
     78      */
     79     public void setAction(final Runnable clickAction) {
     80         mButton.setOnClickListener(new OnClickListener() {
     81             @Override
     82             public void onClick(View view) {
     83                 clickAction.run();
     84             }
     85         });
     86     }
     87 
     88     /**
     89      * Sets the icon's color should change to when the button is on focus.
     90      */
     91     public void setFocusedIconColor(int color) {
     92         final ValueAnimator valueAnimator = ValueAnimator.ofArgb(mIconColor, color);
     93         valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
     94             @Override
     95             public void onAnimationUpdate(final ValueAnimator animator) {
     96                 mIcon.getDrawable().setTint((int) animator.getAnimatedValue());
     97             }
     98         });
     99         valueAnimator.setDuration(mFocusAnimationTimeMs);
    100         mButton.setOnFocusChangeListener(new View.OnFocusChangeListener() {
    101             @Override
    102             public void onFocusChange(View v, boolean hasFocus) {
    103                 if (hasFocus) {
    104                     valueAnimator.start();
    105                 } else {
    106                     valueAnimator.reverse();
    107                 }
    108             }
    109         });
    110         mIconFocusedColor = color;
    111     }
    112 
    113     public void setLabel(String label) {
    114         if (TextUtils.isEmpty(label)) {
    115             mIcon.setVisibility(View.VISIBLE);
    116             mLabel.setVisibility(View.GONE);
    117         } else {
    118             mIcon.setVisibility(View.GONE);
    119             mLabel.setVisibility(View.VISIBLE);
    120             mLabel.setText(label);
    121         }
    122     }
    123 
    124     public void hideRippleAnimation() {
    125         mButton.getDrawable().jumpToCurrentState();
    126     }
    127 
    128     @Override
    129     public void setEnabled(boolean enabled) {
    130         super.setEnabled(enabled);
    131         mButton.setEnabled(enabled);
    132         mButton.setFocusable(enabled);
    133         mIcon.setEnabled(enabled);
    134         mIcon.setAlpha(enabled ? ALPHA_ENABLED : ALPHA_DISABLED);
    135         mLabel.setEnabled(enabled);
    136     }
    137 }
    138