1 /* 2 * Copyright (C) 2017 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.documentsui.inspector; 17 18 import android.app.Activity; 19 import android.content.Context; 20 import android.graphics.Bitmap; 21 import android.graphics.Point; 22 import android.graphics.drawable.Drawable; 23 import android.util.AttributeSet; 24 import android.view.LayoutInflater; 25 import android.view.View; 26 import android.widget.ImageView; 27 import android.widget.ImageView.ScaleType; 28 import android.widget.RelativeLayout; 29 30 import com.android.documentsui.IconUtils; 31 import com.android.documentsui.ProviderExecutor; 32 import com.android.documentsui.R; 33 import com.android.documentsui.ThumbnailLoader; 34 import com.android.documentsui.base.Display; 35 import com.android.documentsui.base.DocumentInfo; 36 import com.android.documentsui.inspector.InspectorController.HeaderDisplay; 37 38 import java.util.function.Consumer; 39 40 import javax.annotation.Nullable; 41 42 /** 43 * Organizes and displays the title and thumbnail for a given document 44 */ 45 public final class HeaderView extends RelativeLayout implements HeaderDisplay { 46 47 private final Context mContext; 48 private final View mHeader; 49 private ImageView mThumbnail; 50 private Point mImageDimensions; 51 HeaderView(Context context)52 public HeaderView(Context context) { 53 this(context, null); 54 } 55 HeaderView(Context context, AttributeSet attrs)56 public HeaderView(Context context, AttributeSet attrs) { 57 this(context, attrs, 0); 58 } 59 HeaderView(Context context, AttributeSet attrs, int defStyleAttr)60 public HeaderView(Context context, AttributeSet attrs, int defStyleAttr) { 61 super(context, attrs, defStyleAttr); 62 LayoutInflater inflater = (LayoutInflater) getContext().getSystemService( 63 Context.LAYOUT_INFLATER_SERVICE); 64 mContext = context; 65 mHeader = inflater.inflate(R.layout.inspector_header, null); 66 mThumbnail = (ImageView) mHeader.findViewById(R.id.inspector_thumbnail); 67 68 int width = (int) Display.screenWidth((Activity)context); 69 int height = mContext.getResources().getDimensionPixelSize(R.dimen.inspector_header_height); 70 mImageDimensions = new Point(width, height); 71 addView(mHeader); 72 } 73 74 @Override accept(DocumentInfo info)75 public void accept(DocumentInfo info) { 76 loadHeaderImage(info); 77 } 78 loadHeaderImage(DocumentInfo doc)79 private void loadHeaderImage(DocumentInfo doc) { 80 if (!doc.isThumbnailSupported()) { 81 showImage(doc, null); 82 } else { 83 Consumer<Bitmap> callback = new Consumer<Bitmap>() { 84 @Override 85 public void accept(Bitmap thumbnail) { 86 showImage(doc, thumbnail); 87 } 88 }; 89 // load the thumbnail async. 90 final ThumbnailLoader task = new ThumbnailLoader(doc.derivedUri, mThumbnail, 91 mImageDimensions, doc.lastModified, callback, false); 92 task.executeOnExecutor(ProviderExecutor.forAuthority(doc.derivedUri.getAuthority()), 93 doc.derivedUri); 94 } 95 } 96 97 /** 98 * Shows the supplied image, falling back to a mimetype icon if the image is null. 99 */ showImage(DocumentInfo info, @Nullable Bitmap thumbnail)100 private void showImage(DocumentInfo info, @Nullable Bitmap thumbnail) { 101 if (thumbnail != null) { 102 mThumbnail.setScaleType(ScaleType.CENTER_CROP); 103 mThumbnail.setImageBitmap(thumbnail); 104 } else { 105 Drawable mimeIcon = IconUtils.loadMimeIcon(mContext, info.mimeType); 106 mThumbnail.setScaleType(ScaleType.FIT_CENTER); 107 mThumbnail.setImageDrawable(mimeIcon); 108 } 109 mThumbnail.animate().alpha(1.0f).start(); 110 } 111 }