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 android.cts.jank.leanback.presenter;
18 
19 import android.graphics.drawable.Drawable;
20 import android.support.v17.leanback.widget.ImageCardView;
21 import android.support.v17.leanback.widget.Presenter;
22 import android.view.ViewGroup;
23 
24 import com.bumptech.glide.Glide;
25 import android.cts.jank.leanback.R;
26 import android.cts.jank.leanback.model.Movie;
27 
28 /**
29  * A CardPresenter is used to generate Views and bind Objects to them on demand.
30  * It contains an Image CardView
31  */
32 public class CardPresenter extends Presenter {
33     private static int CARD_WIDTH = 313;
34     private static int CARD_HEIGHT = 176;
35     private static int sSelectedBackgroundColor;
36     private static int sDefaultBackgroundColor;
37     private Drawable mDefaultCardImage;
38 
39     @Override
onCreateViewHolder(ViewGroup parent)40     public ViewHolder onCreateViewHolder(ViewGroup parent) {
41         sDefaultBackgroundColor = parent.getResources().getColor(R.color.default_background, null);
42         sSelectedBackgroundColor =
43                 parent.getResources().getColor(R.color.selected_background, null);
44         mDefaultCardImage = parent.getResources().getDrawable(R.drawable.movie, null);
45 
46         ImageCardView cardView = new ImageCardView(parent.getContext()) {
47             @Override
48             public void setSelected(boolean selected) {
49                 updateCardBackgroundColor(this, selected);
50                 super.setSelected(selected);
51             }
52         };
53 
54         cardView.setFocusable(true);
55         cardView.setFocusableInTouchMode(true);
56         updateCardBackgroundColor(cardView, false);
57         return new ViewHolder(cardView);
58     }
59 
updateCardBackgroundColor(ImageCardView view, boolean selected)60     private static void updateCardBackgroundColor(ImageCardView view, boolean selected) {
61         int color = selected ? sSelectedBackgroundColor : sDefaultBackgroundColor;
62         // Both background colors should be set because the view's background is temporarily visible
63         // during animations.
64         view.setBackgroundColor(color);
65         view.findViewById(R.id.info_field).setBackgroundColor(color);
66     }
67 
68     @Override
onBindViewHolder(Presenter.ViewHolder viewHolder, Object item)69     public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object item) {
70         Movie movie = (Movie) item;
71         ImageCardView cardView = (ImageCardView) viewHolder.view;
72 
73         cardView.setTitleText(movie.getTitle());
74         cardView.setContentText(movie.getStudio());
75         cardView.setMainImageDimensions(CARD_WIDTH, CARD_HEIGHT);
76         Glide.with(viewHolder.view.getContext())
77                 .load(R.drawable.gradation)
78                 .centerCrop()
79                 .error(mDefaultCardImage)
80                 .into(cardView.getMainImageView());
81     }
82 
83     @Override
onUnbindViewHolder(Presenter.ViewHolder viewHolder)84     public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {
85         ImageCardView cardView = (ImageCardView) viewHolder.view;
86         // Remove references to images so that the garbage collector can free up memory
87         cardView.setBadgeImage(null);
88         cardView.setMainImage(null);
89     }
90 }
91