| /* |
| * Copyright (C) 2010 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.gallery3d.photoeditor; |
| |
| import android.content.Context; |
| import android.graphics.Bitmap; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.view.Gravity; |
| import android.widget.Toast; |
| |
| import com.android.gallery3d.R; |
| |
| /** |
| * Asynchronous task for loading source photo screennail. |
| */ |
| public class LoadScreennailTask extends AsyncTask<Uri, Void, Bitmap> { |
| |
| /** |
| * Callback for the completed asynchronous task. |
| */ |
| public interface Callback { |
| |
| void onComplete(Bitmap result); |
| } |
| |
| private static final int SCREENNAIL_WIDTH = 1280; |
| private static final int SCREENNAIL_HEIGHT = 960; |
| |
| private final Context context; |
| private final Callback callback; |
| |
| public LoadScreennailTask(Context context, Callback callback) { |
| this.context = context; |
| this.callback = callback; |
| } |
| |
| /** |
| * The task should be executed with one given source photo uri. |
| */ |
| @Override |
| protected Bitmap doInBackground(Uri... params) { |
| if (params[0] == null) { |
| return null; |
| } |
| return new BitmapUtils(context).getBitmap(params[0], SCREENNAIL_WIDTH, SCREENNAIL_HEIGHT); |
| } |
| |
| @Override |
| protected void onPostExecute(Bitmap result) { |
| if (result == null) { |
| Toast toast = Toast.makeText(context, R.string.loading_failure, Toast.LENGTH_SHORT); |
| toast.setGravity(Gravity.CENTER, 0, 0); |
| toast.show(); |
| } |
| callback.onComplete(result); |
| } |
| } |