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      1 /*
      2  * Copyright (C) 2013 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.gallery3d.filtershow.pipeline;
     18 
     19 import android.content.res.Resources;
     20 import android.graphics.Bitmap;
     21 import android.graphics.Rect;
     22 import android.net.Uri;
     23 import com.android.gallery3d.filtershow.cache.ImageLoader;
     24 import com.android.gallery3d.filtershow.filters.FiltersManager;
     25 import com.android.gallery3d.filtershow.tools.SaveImage;
     26 
     27 import java.io.File;
     28 
     29 public class ImageSavingTask extends ProcessingTask {
     30     private ProcessingService mProcessingService;
     31 
     32     static class SaveRequest implements Request {
     33         Uri sourceUri;
     34         Uri selectedUri;
     35         File destinationFile;
     36         ImagePreset preset;
     37         boolean flatten;
     38         int quality;
     39         float sizeFactor;
     40         Bitmap previewImage;
     41         boolean exit;
     42     }
     43 
     44     static class UpdateBitmap implements Update {
     45         Bitmap bitmap;
     46     }
     47 
     48     static class UpdateProgress implements Update {
     49         int max;
     50         int current;
     51     }
     52 
     53     static class UpdatePreviewSaved implements Update {
     54         Uri uri;
     55         boolean exit;
     56     }
     57 
     58     static class URIResult implements Result {
     59         Uri uri;
     60         boolean exit;
     61     }
     62 
     63     public ImageSavingTask(ProcessingService service) {
     64         mProcessingService = service;
     65     }
     66 
     67     public void saveImage(Uri sourceUri, Uri selectedUri,
     68                           File destinationFile, ImagePreset preset,
     69                           Bitmap previewImage, boolean flatten,
     70                           int quality, float sizeFactor, boolean exit) {
     71         SaveRequest request = new SaveRequest();
     72         request.sourceUri = sourceUri;
     73         request.selectedUri = selectedUri;
     74         request.destinationFile = destinationFile;
     75         request.preset = preset;
     76         request.flatten = flatten;
     77         request.quality = quality;
     78         request.sizeFactor = sizeFactor;
     79         request.previewImage = previewImage;
     80         request.exit = exit;
     81         postRequest(request);
     82     }
     83 
     84     public Result doInBackground(Request message) {
     85         SaveRequest request = (SaveRequest) message;
     86         Uri sourceUri = request.sourceUri;
     87         Uri selectedUri = request.selectedUri;
     88         File destinationFile = request.destinationFile;
     89         Bitmap previewImage = request.previewImage;
     90         ImagePreset preset = request.preset;
     91         boolean flatten = request.flatten;
     92         final boolean exit = request.exit;
     93         // We create a small bitmap showing the result that we can
     94         // give to the notification
     95         UpdateBitmap updateBitmap = new UpdateBitmap();
     96         updateBitmap.bitmap = createNotificationBitmap(previewImage, sourceUri, preset);
     97         postUpdate(updateBitmap);
     98         SaveImage saveImage = new SaveImage(mProcessingService, sourceUri,
     99                 selectedUri, destinationFile, previewImage,
    100                 new SaveImage.Callback() {
    101                     @Override
    102                     public void onPreviewSaved(Uri uri){
    103                         UpdatePreviewSaved previewSaved = new UpdatePreviewSaved();
    104                         previewSaved.uri = uri;
    105                         previewSaved.exit = exit;
    106                         postUpdate(previewSaved);
    107                     }
    108 
    109                     @Override
    110                     public void onProgress(int max, int current) {
    111                         UpdateProgress updateProgress = new UpdateProgress();
    112                         updateProgress.max = max;
    113                         updateProgress.current = current;
    114                         postUpdate(updateProgress);
    115                     }
    116                 });
    117         Uri uri = saveImage.processAndSaveImage(preset, flatten,
    118                 request.quality, request.sizeFactor, request.exit);
    119         URIResult result = new URIResult();
    120         result.uri = uri;
    121         result.exit = request.exit;
    122         return result;
    123     }
    124 
    125     @Override
    126     public void onResult(Result message) {
    127         URIResult result = (URIResult) message;
    128         mProcessingService.completeSaveImage(result.uri, result.exit);
    129     }
    130 
    131     @Override
    132     public void onUpdate(Update message) {
    133         if (message instanceof UpdatePreviewSaved){
    134             Uri uri = ((UpdatePreviewSaved) message).uri;
    135             boolean exit = ((UpdatePreviewSaved) message).exit;
    136             mProcessingService.completePreviewSaveImage(uri, exit);
    137         }
    138         if (message instanceof UpdateBitmap) {
    139             Bitmap bitmap = ((UpdateBitmap) message).bitmap;
    140             mProcessingService.updateNotificationWithBitmap(bitmap);
    141         }
    142         if (message instanceof UpdateProgress) {
    143             UpdateProgress progress = (UpdateProgress) message;
    144             mProcessingService.updateProgress(progress.max, progress.current);
    145         }
    146     }
    147 
    148     private Bitmap createNotificationBitmap(Bitmap preview, Uri sourceUri, ImagePreset preset) {
    149         int notificationBitmapSize = Resources.getSystem().getDimensionPixelSize(
    150                 android.R.dimen.notification_large_icon_width);
    151         if (preview != null) {
    152             return Bitmap.createScaledBitmap(preview,
    153                     notificationBitmapSize, notificationBitmapSize, true);
    154         }
    155         Bitmap bitmap = ImageLoader.loadConstrainedBitmap(sourceUri, getContext(),
    156                 notificationBitmapSize, null, true);
    157         CachingPipeline pipeline = new CachingPipeline(FiltersManager.getManager(), "Thumb");
    158         return pipeline.renderFinalImage(bitmap, preset);
    159     }
    160 
    161 }
    162