1 /* 2 * Copyright (C) 2019 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.settings.accessibility; 18 19 import android.content.Context; 20 import android.graphics.drawable.AnimatedImageDrawable; 21 import android.graphics.drawable.Drawable; 22 import android.net.Uri; 23 import android.widget.ImageView; 24 25 import androidx.preference.Preference; 26 import androidx.preference.PreferenceViewHolder; 27 28 import com.android.settings.R; 29 30 /** 31 * A custom {@link ImageView} preference for showing animated or static image, such as <a 32 * href="https://developers.google.com/speed/webp/">animated webp</a> and static png. 33 */ 34 public class AnimatedImagePreference extends Preference { 35 36 private Uri mImageUri; 37 private int mMaxHeight = -1; 38 AnimatedImagePreference(Context context)39 AnimatedImagePreference(Context context) { 40 super(context); 41 setLayoutResource(R.layout.preference_animated_image); 42 } 43 44 @Override onBindViewHolder(PreferenceViewHolder holder)45 public void onBindViewHolder(PreferenceViewHolder holder) { 46 super.onBindViewHolder(holder); 47 48 final ImageView imageView = holder.itemView.findViewById(R.id.animated_img); 49 if (imageView == null) { 50 return; 51 } 52 53 if (mImageUri != null) { 54 imageView.setImageURI(mImageUri); 55 56 final Drawable drawable = imageView.getDrawable(); 57 if (drawable instanceof AnimatedImageDrawable) { 58 ((AnimatedImageDrawable) drawable).start(); 59 } 60 } 61 62 if (mMaxHeight > -1) { 63 imageView.setMaxHeight(mMaxHeight); 64 } 65 } 66 67 /** 68 * Sets image uri to display image in {@link ImageView} 69 * 70 * @param imageUri the Uri of an image 71 */ setImageUri(Uri imageUri)72 public void setImageUri(Uri imageUri) { 73 if (imageUri != null && !imageUri.equals(mImageUri)) { 74 mImageUri = imageUri; 75 notifyChanged(); 76 } 77 } 78 79 /** 80 * Sets the maximum height of the view. 81 * 82 * @param maxHeight the maximum height of ImageView in terms of pixels. 83 */ setMaxHeight(int maxHeight)84 public void setMaxHeight(int maxHeight) { 85 if (maxHeight != mMaxHeight) { 86 mMaxHeight = maxHeight; 87 notifyChanged(); 88 } 89 } 90 } 91