1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
* Copyright (C) 2008 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.incallui;
import android.app.Notification;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.support.annotation.MainThread;
import android.support.annotation.Nullable;
import android.support.annotation.WorkerThread;
import com.android.dialer.common.LogUtil;
import com.android.dialer.common.concurrent.DialerExecutor;
import com.android.dialer.common.concurrent.DialerExecutorComponent;
import java.io.IOException;
import java.io.InputStream;
/** Helper class for loading contacts photo asynchronously. */
public class ContactsAsyncHelper {
/** Interface for a WorkerHandler result return. */
interface OnImageLoadCompleteListener {
/**
* Called when the image load is complete. Must be called in main thread.
*
* @param token Integer passed in {@link ContactsAsyncHelper#startObtainPhotoAsync(int, Context,
* Uri, OnImageLoadCompleteListener, Object)}.
* @param photo Drawable object obtained by the async load.
* @param photoIcon Bitmap object obtained by the async load.
* @param cookie Object passed in {@link ContactsAsyncHelper#startObtainPhotoAsync(int, Context,
* Uri, OnImageLoadCompleteListener, Object)}. Can be null iff. the original cookie is null.
*/
@MainThread
void onImageLoadComplete(int token, Drawable photo, Bitmap photoIcon, Object cookie);
/** Called when image is loaded to udpate data. Must be called in worker thread. */
@WorkerThread
void onImageLoaded(int token, Drawable photo, Bitmap photoIcon, Object cookie);
}
/**
* Starts an asynchronous image load. After finishing the load, {@link
* OnImageLoadCompleteListener#onImageLoadComplete(int, Drawable, Bitmap, Object)} will be called.
*
* @param token Arbitrary integer which will be returned as the first argument of {@link
* OnImageLoadCompleteListener#onImageLoadComplete(int, Drawable, Bitmap, Object)}
* @param context Context object used to do the time-consuming operation.
* @param displayPhotoUri Uri to be used to fetch the photo
* @param listener Callback object which will be used when the asynchronous load is done. Can be
* null, which means only the asynchronous load is done while there's no way to obtain the
* loaded photos.
* @param cookie Arbitrary object the caller wants to remember, which will become the fourth
* argument of {@link OnImageLoadCompleteListener#onImageLoadComplete(int, Drawable, Bitmap,
* Object)}. Can be null, at which the callback will also has null for the argument.
*/
static void startObtainPhotoAsync(
int token,
Context context,
Uri displayPhotoUri,
OnImageLoadCompleteListener listener,
Object cookie) {
// in case the source caller info is null, the URI will be null as well.
// just update using the placeholder image in this case.
if (displayPhotoUri == null) {
LogUtil.e("ContactsAsyncHelper.startObjectPhotoAsync", "uri is missing");
return;
}
// Added additional Cookie field in the callee to handle arguments
// sent to the callback function.
// setup arguments
WorkerArgs args = new WorkerArgs();
args.token = token;
args.cookie = cookie;
args.context = context;
args.displayPhotoUri = displayPhotoUri;
args.listener = listener;
DialerExecutorComponent.get(context)
.dialerExecutorFactory()
.createNonUiTaskBuilder(new Worker())
.onSuccess(
output -> {
if (args.listener != null) {
LogUtil.d(
"ContactsAsyncHelper.startObtainPhotoAsync",
"notifying listener: "
+ args.listener
+ " image: "
+ args.displayPhotoUri
+ " completed");
args.listener.onImageLoadComplete(
args.token, args.photo, args.photoIcon, args.cookie);
}
})
.build()
.executeParallel(args);
}
private static final class WorkerArgs {
public int token;
public Context context;
public Uri displayPhotoUri;
public Drawable photo;
public Bitmap photoIcon;
public Object cookie;
public OnImageLoadCompleteListener listener;
}
private static class Worker implements DialerExecutor.Worker<WorkerArgs, Void> {
@Nullable
@Override
public Void doInBackground(WorkerArgs args) throws Throwable {
InputStream inputStream = null;
try {
try {
inputStream = args.context.getContentResolver().openInputStream(args.displayPhotoUri);
} catch (Exception e) {
LogUtil.e(
"ContactsAsyncHelper.Worker.doInBackground", "error opening photo input stream", e);
}
if (inputStream != null) {
args.photo = Drawable.createFromStream(inputStream, args.displayPhotoUri.toString());
// This assumes Drawable coming from contact database is usually
// BitmapDrawable and thus we can have (down)scaled version of it.
args.photoIcon = getPhotoIconWhenAppropriate(args.context, args.photo);
LogUtil.d(
"ContactsAsyncHelper.Worker.doInBackground",
"loading image, URI: %s",
args.displayPhotoUri);
} else {
args.photo = null;
args.photoIcon = null;
LogUtil.d(
"ContactsAsyncHelper.Worker.doInBackground",
"problem with image, URI: %s, using default image.",
args.displayPhotoUri);
}
if (args.listener != null) {
args.listener.onImageLoaded(args.token, args.photo, args.photoIcon, args.cookie);
}
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
LogUtil.e(
"ContactsAsyncHelper.Worker.doInBackground", "Unable to close input stream.", e);
}
}
}
return null;
}
/**
* Returns a Bitmap object suitable for {@link Notification}'s large icon. This might return
* null when the given Drawable isn't BitmapDrawable, or if the system fails to create a scaled
* Bitmap for the Drawable.
*/
private Bitmap getPhotoIconWhenAppropriate(Context context, Drawable photo) {
if (!(photo instanceof BitmapDrawable)) {
return null;
}
int iconSize = context.getResources().getDimensionPixelSize(R.dimen.notification_icon_size);
Bitmap orgBitmap = ((BitmapDrawable) photo).getBitmap();
int orgWidth = orgBitmap.getWidth();
int orgHeight = orgBitmap.getHeight();
int longerEdge = orgWidth > orgHeight ? orgWidth : orgHeight;
// We want downscaled one only when the original icon is too big.
if (longerEdge > iconSize) {
float ratio = ((float) longerEdge) / iconSize;
int newWidth = (int) (orgWidth / ratio);
int newHeight = (int) (orgHeight / ratio);
// If the longer edge is much longer than the shorter edge, the latter may
// become 0 which will cause a crash.
if (newWidth <= 0 || newHeight <= 0) {
LogUtil.w(
"ContactsAsyncHelper.Worker.getPhotoIconWhenAppropriate",
"Photo icon's width or height become 0.");
return null;
}
// It is sure ratio >= 1.0f in any case and thus the newly created Bitmap
// should be smaller than the original.
return Bitmap.createScaledBitmap(orgBitmap, newWidth, newHeight, true);
} else {
return orgBitmap;
}
}
}
}
|
