1 /* 2 * Copyright (C) 2011 Google Inc. 3 * Licensed to The Android Open Source Project. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package com.android.ex.photo.adapters; 19 20 import android.content.Context; 21 import android.content.Intent; 22 import android.database.Cursor; 23 import android.support.v4.app.Fragment; 24 25 import com.android.ex.photo.Intents; 26 import com.android.ex.photo.Intents.PhotoViewIntentBuilder; 27 import com.android.ex.photo.fragments.PhotoViewFragment; 28 import com.android.ex.photo.provider.PhotoContract; 29 30 /** 31 * Pager adapter for the photo view 32 */ 33 public class PhotoPagerAdapter extends BaseCursorPagerAdapter { 34 protected int mContentUriIndex; 35 protected int mThumbnailUriIndex; 36 protected int mLoadingIndex; 37 protected final float mMaxScale; 38 protected boolean mDisplayThumbsFullScreen; 39 PhotoPagerAdapter( Context context, android.support.v4.app.FragmentManager fm, Cursor c, float maxScale, boolean thumbsFullScreen)40 public PhotoPagerAdapter( 41 Context context, android.support.v4.app.FragmentManager fm, Cursor c, 42 float maxScale, boolean thumbsFullScreen) { 43 super(context, fm, c); 44 mMaxScale = maxScale; 45 mDisplayThumbsFullScreen = thumbsFullScreen; 46 } 47 48 @Override getItem(Context context, Cursor cursor, int position)49 public Fragment getItem(Context context, Cursor cursor, int position) { 50 final String photoUri = cursor.getString(mContentUriIndex); 51 final String thumbnailUri = cursor.getString(mThumbnailUriIndex); 52 boolean loading; 53 if(mLoadingIndex != -1) { 54 loading = Boolean.valueOf(cursor.getString(mLoadingIndex)); 55 } else { 56 loading = false; 57 } 58 boolean onlyShowSpinner = false; 59 if(photoUri == null && loading) { 60 onlyShowSpinner = true; 61 } 62 63 // create new PhotoViewFragment 64 final PhotoViewIntentBuilder builder = 65 Intents.newPhotoViewFragmentIntentBuilder(mContext); 66 builder 67 .setResolvedPhotoUri(photoUri) 68 .setThumbnailUri(thumbnailUri) 69 .setDisplayThumbsFullScreen(mDisplayThumbsFullScreen) 70 .setMaxInitialScale(mMaxScale); 71 72 return PhotoViewFragment.newInstance(builder.build(), position, onlyShowSpinner); 73 } 74 75 @Override swapCursor(Cursor newCursor)76 public Cursor swapCursor(Cursor newCursor) { 77 if (newCursor != null) { 78 mContentUriIndex = 79 newCursor.getColumnIndex(PhotoContract.PhotoViewColumns.CONTENT_URI); 80 mThumbnailUriIndex = 81 newCursor.getColumnIndex(PhotoContract.PhotoViewColumns.THUMBNAIL_URI); 82 mLoadingIndex = 83 newCursor.getColumnIndex(PhotoContract.PhotoViewColumns.LOADING_INDICATOR); 84 } else { 85 mContentUriIndex = -1; 86 mThumbnailUriIndex = -1; 87 mLoadingIndex = -1; 88 } 89 90 return super.swapCursor(newCursor); 91 } 92 getPhotoUri(Cursor cursor)93 public String getPhotoUri(Cursor cursor) { 94 return cursor.getString(mContentUriIndex); 95 } 96 getThumbnailUri(Cursor cursor)97 public String getThumbnailUri(Cursor cursor) { 98 return cursor.getString(mThumbnailUriIndex); 99 } 100 } 101