1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 package com.example.android.leanback; 15 16 import android.content.Context; 17 import android.graphics.drawable.Drawable; 18 import com.example.android.leanback.R; 19 import android.support.v17.leanback.widget.ImageCardView; 20 import android.support.v17.leanback.widget.Presenter; 21 import android.text.TextUtils; 22 import android.util.Log; 23 import android.view.ViewGroup; 24 import android.view.ContextThemeWrapper; 25 import android.view.View.MeasureSpec; 26 import android.view.ViewGroup.LayoutParams; 27 import android.widget.TextView; 28 29 import java.util.Random; 30 31 public class CardPresenter extends Presenter { 32 private static final String TAG = "CardPresenter"; 33 34 private static final int IMAGE_HEIGHT_DP = 120; 35 36 private static Random sRand = new Random(); 37 private int mRowHeight = 0; 38 private int mExpandedRowHeight = 0; 39 40 private int mCardThemeResId; 41 private Context mContextThemeWrapper; 42 CardPresenter(int cardThemeResId)43 public CardPresenter(int cardThemeResId) { 44 mCardThemeResId = cardThemeResId; 45 } 46 CardPresenter()47 public CardPresenter() { 48 mCardThemeResId = 0; 49 } 50 setupRowHeights(Context context)51 private void setupRowHeights(Context context) { 52 if (mRowHeight == 0) { 53 float density = context.getResources().getDisplayMetrics().density; 54 int height = (int) (IMAGE_HEIGHT_DP * density + 0.5f); 55 56 ImageCardView v = new ImageCardView(context); 57 v.setMainImageDimensions(LayoutParams.WRAP_CONTENT, height); 58 v.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); 59 mRowHeight = v.getMeasuredHeight(); 60 v.setActivated(true); 61 v.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); 62 mExpandedRowHeight = v.getMeasuredHeight(); 63 } 64 } 65 getRowHeight(Context context)66 public int getRowHeight(Context context) { 67 setupRowHeights(context); 68 return mRowHeight; 69 } 70 getExpandedRowHeight(Context context)71 public int getExpandedRowHeight(Context context) { 72 setupRowHeights(context); 73 return mExpandedRowHeight; 74 } 75 76 @Override onCreateViewHolder(ViewGroup parent)77 public ViewHolder onCreateViewHolder(ViewGroup parent) { 78 Log.d(TAG, "onCreateViewHolder"); 79 Context context = parent.getContext(); 80 if (mCardThemeResId != 0) { 81 if (mContextThemeWrapper == null) { 82 mContextThemeWrapper = new ContextThemeWrapper(context, mCardThemeResId); 83 } 84 context = mContextThemeWrapper; 85 } 86 ImageCardView v = new ImageCardView(context); 87 v.setFocusable(true); 88 v.setFocusableInTouchMode(true); 89 // Randomly makes image view crop as a square or just stretch to original 90 // aspect ratio. 91 if (sRand.nextBoolean()) { 92 v.setMainImageAdjustViewBounds(false); 93 v.setMainImageDimensions(getRowHeight(parent.getContext()), 94 getRowHeight(parent.getContext())); 95 } else { 96 v.setMainImageAdjustViewBounds(true); 97 v.setMainImageDimensions(LayoutParams.WRAP_CONTENT, 98 getRowHeight(parent.getContext())); 99 } 100 return new ViewHolder(v); 101 } 102 103 @Override onBindViewHolder(ViewHolder viewHolder, Object item)104 public void onBindViewHolder(ViewHolder viewHolder, Object item) { 105 Log.d(TAG, "onBindViewHolder for " + item.toString()); 106 PhotoItem photoItem = (PhotoItem) item; 107 Drawable drawable = viewHolder.view.getContext().getResources() 108 .getDrawable(photoItem.getImageResourceId()); 109 ((ImageCardView) viewHolder.view).setMainImage(drawable); 110 ((ImageCardView) viewHolder.view).setTitleText(photoItem.getTitle()); 111 if (!TextUtils.isEmpty(photoItem.getContent())) { 112 ((ImageCardView) viewHolder.view).setContentText(photoItem.getContent()); 113 } 114 } 115 116 @Override onUnbindViewHolder(ViewHolder viewHolder)117 public void onUnbindViewHolder(ViewHolder viewHolder) { 118 Log.d(TAG, "onUnbindViewHolder"); 119 } 120 } 121