| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.wallpaper.model; |
| |
| import android.Manifest.permission; |
| import android.app.Activity; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.database.Cursor; |
| import android.graphics.drawable.Drawable; |
| import android.net.Uri; |
| import android.provider.MediaStore; |
| |
| import com.android.wallpaper.asset.Asset; |
| import com.android.wallpaper.asset.ContentUriAsset; |
| |
| /** |
| * Category of wallpapers from user's images which are visible on the device. |
| */ |
| public class ImageCategory extends Category { |
| |
| /** |
| * Resource ID for the ImageCategory's overlay icon. If the constructor that does not take an |
| * {@code int overlayIconResId} is used to instantiate an ImageCategory, then the resource ID will |
| * default to 0 (which is not a valid resource ID) and #getOverlayIcon will return null. |
| */ |
| private int mOverlayIconResId; |
| |
| public ImageCategory(String title, String collectionId, int priority) { |
| super(title, collectionId, priority); |
| mOverlayIconResId = 0; |
| } |
| |
| public ImageCategory(String title, String collectionId, int priority, int overlayIconResId) { |
| super(title, collectionId, priority); |
| mOverlayIconResId = overlayIconResId; |
| } |
| |
| @Override |
| public void show(Activity srcActivity, PickerIntentFactory factory, int requestCode) { |
| Intent intent = new Intent(Intent.ACTION_GET_CONTENT); |
| intent.setType("image/*"); |
| srcActivity.startActivityForResult(intent, requestCode); |
| } |
| |
| @Override |
| public int getOverlayIconSizeDp() { |
| return 128; |
| } |
| |
| @Override |
| public Asset getThumbnail(Context context) { |
| if (!isReadExternalStoragePermissionGranted(context)) { |
| // MediaStore.Images.Media.EXTERNAL_CONTENT_URI requires |
| // the READ_EXTERNAL_STORAGE permission. |
| return null; |
| } |
| |
| String[] projection = new String[]{ |
| MediaStore.Images.ImageColumns._ID, |
| MediaStore.Images.ImageColumns.DATE_TAKEN, |
| }; |
| String sortOrder = MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC"; |
| Cursor cursor = context.getContentResolver().query( |
| MediaStore.Images.Media.EXTERNAL_CONTENT_URI, |
| projection, |
| null /* selection */, |
| null /* selectionArgs */, |
| sortOrder); |
| |
| Asset asset = null; |
| if (cursor != null) { |
| if (cursor.moveToNext()) { |
| asset = new ContentUriAsset(context, |
| Uri.parse(MediaStore.Images.Media.EXTERNAL_CONTENT_URI + "/" + cursor.getString(0))); |
| } |
| cursor.close(); |
| } |
| |
| return asset; |
| } |
| |
| @Override |
| public Drawable getOverlayIcon(Context context) { |
| // Only provide the overlay icon if the thumbnail asset is null. |
| if (getThumbnail(context) == null && mOverlayIconResId > 0) { |
| return context.getResources().getDrawable(mOverlayIconResId); |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public boolean supportsCustomPhotos() { |
| return true; |
| } |
| |
| /** |
| * Returns whether READ_EXTERNAL_STORAGE has been granted for the application. |
| */ |
| private boolean isReadExternalStoragePermissionGranted(Context context) { |
| return context.getPackageManager().checkPermission(permission.READ_EXTERNAL_STORAGE, |
| context.getPackageName()) == PackageManager.PERMISSION_GRANTED; |
| } |
| } |