|
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 | 1 | package fr.free.nrw.commons; |
17 | 2 |
|
18 | 3 | import android.content.Context; |
19 | | -import android.content.res.TypedArray; |
20 | | -import android.graphics.drawable.BitmapDrawable; |
21 | | -import android.text.TextUtils; |
| 4 | +import android.support.annotation.Nullable; |
| 5 | +import android.support.v4.util.LruCache; |
22 | 6 | import android.util.AttributeSet; |
23 | | -import android.view.View; |
24 | | -import android.widget.ImageView; |
25 | 7 |
|
26 | | -import com.android.volley.VolleyError; |
27 | | -import com.android.volley.toolbox.ImageLoader; |
28 | | -import com.android.volley.toolbox.ImageLoader.ImageContainer; |
29 | | -import com.android.volley.toolbox.ImageLoader.ImageListener; |
| 8 | +import com.facebook.drawee.view.SimpleDraweeView; |
30 | 9 |
|
31 | | -import fr.free.nrw.commons.contributions.Contribution; |
32 | | -import fr.free.nrw.commons.contributions.ContributionsContentProvider; |
| 10 | +public class MediaWikiImageView extends SimpleDraweeView { |
| 11 | + private ThumbnailFetchTask currentThumbnailTask; |
| 12 | + LruCache<String, String> thumbnailUrlCache = new LruCache<>(1024); |
33 | 13 |
|
34 | | -public class MediaWikiImageView extends ImageView { |
35 | | - |
36 | | - private Media mMedia; |
37 | | - |
38 | | - private ImageLoader mImageLoader; |
39 | | - |
40 | | - private ImageContainer mImageContainer; |
41 | | - |
42 | | - private View loadingView; |
43 | | - |
44 | | - private boolean isThumbnail; |
45 | 14 |
|
46 | 15 | public MediaWikiImageView(Context context) { |
47 | 16 | this(context, null); |
48 | 17 | } |
49 | 18 |
|
50 | 19 | public MediaWikiImageView(Context context, AttributeSet attrs) { |
51 | 20 | this(context, attrs, 0); |
52 | | - TypedArray actualAttrs = context.getTheme().obtainStyledAttributes(attrs, R.styleable.MediaWikiImageView, 0, 0); |
53 | | - isThumbnail = actualAttrs.getBoolean(0, false); |
54 | | - actualAttrs.recycle(); |
55 | 21 | } |
56 | 22 |
|
57 | 23 | public MediaWikiImageView(Context context, AttributeSet attrs, int defStyle) { |
58 | 24 | super(context, attrs, defStyle); |
59 | 25 | } |
60 | 26 |
|
61 | | - public void setMedia(Media media, ImageLoader imageLoader) { |
62 | | - this.mMedia = media; |
63 | | - mImageLoader = imageLoader; |
64 | | - loadImageIfNecessary(false); |
65 | | - } |
66 | | - |
67 | | - public void setLoadingView(View loadingView) { |
68 | | - this.loadingView = loadingView; |
69 | | - } |
70 | | - |
71 | | - public View getLoadingView() { |
72 | | - return loadingView; |
73 | | - } |
74 | | - |
75 | | - private void loadImageIfNecessary(final boolean isInLayoutPass) { |
76 | | - loadImageIfNecessary(isInLayoutPass, false); |
77 | | - } |
78 | | - |
79 | | - private void loadImageIfNecessary(final boolean isInLayoutPass, final boolean tryOriginal) { |
80 | | - int width = getWidth(); |
81 | | - int height = getHeight(); |
82 | | - |
83 | | - // if the view's bounds aren't known yet, hold off on loading the image. |
84 | | - if (width == 0 && height == 0) { |
85 | | - return; |
| 27 | + public void setMedia(Media media) { |
| 28 | + if (currentThumbnailTask != null) { |
| 29 | + currentThumbnailTask.cancel(true); |
86 | 30 | } |
87 | | - |
88 | | - if(mMedia == null) { |
| 31 | + setImageURI((String) null); |
| 32 | + if(media == null) { |
89 | 33 | return; |
90 | 34 | } |
91 | 35 |
|
92 | | - // Do not count for density when loading thumbnails. |
93 | | - // FIXME: Use another 'algorithm' that doesn't punish low res devices |
94 | | - if(isThumbnail) { |
95 | | - float dpFactor = Math.max(getResources().getDisplayMetrics().density, 1.0f); |
96 | | - width = (int) (width / dpFactor); |
97 | | - height = (int) (height / dpFactor); |
98 | | - } |
99 | | - |
100 | | - final String mUrl; |
101 | | - if(tryOriginal) { |
102 | | - mUrl = mMedia.getImageUrl(); |
| 36 | + if (thumbnailUrlCache.get(media.getFilename()) != null) { |
| 37 | + setImageUrl(thumbnailUrlCache.get(media.getFilename())); |
103 | 38 | } else { |
104 | | - // Round it to the nearest 320 |
105 | | - // Possible a similar size image has already been generated. |
106 | | - // Reduces Server cache fragmentation, also increases chance of cache hit |
107 | | - // If width is less than 320, we round up to 320 |
108 | | - int bucketedWidth = width <= 320 ? 320 : Math.round((float)width / 320.0f) * 320; |
109 | | - if(mMedia.getWidth() != 0 && mMedia.getWidth() < bucketedWidth) { |
110 | | - // If we know that the width of the image is lesser than the required width |
111 | | - // We don't even try to load the thumbnai, go directly to the source |
112 | | - loadImageIfNecessary(isInLayoutPass, true); |
113 | | - return; |
114 | | - } else { |
115 | | - mUrl = mMedia.getThumbnailUrl(bucketedWidth); |
116 | | - } |
| 39 | + currentThumbnailTask = new ThumbnailFetchTask(); |
| 40 | + currentThumbnailTask.execute(media.getFilename()); |
117 | 41 | } |
118 | | - |
119 | | - // if the URL to be loaded in this view is empty, cancel any old requests and clear the |
120 | | - // currently loaded image. |
121 | | - if (TextUtils.isEmpty(mUrl)) { |
122 | | - if (mImageContainer != null) { |
123 | | - mImageContainer.cancelRequest(); |
124 | | - mImageContainer = null; |
125 | | - } |
126 | | - setImageBitmap(null); |
127 | | - return; |
128 | | - } |
129 | | - |
130 | | - // Don't repeat work. Prevents onLayout cascades |
131 | | - // We ignore it if the image request was for either the current URL of for the full URL |
132 | | - // Since the full URL is always the second, and |
133 | | - if (mImageContainer != null && mImageContainer.getRequestUrl() != null) { |
134 | | - if (mImageContainer.getRequestUrl().equals(mMedia.getImageUrl()) || mImageContainer.getRequestUrl().equals(mUrl)) { |
135 | | - return; |
136 | | - } else { |
137 | | - // if there is a pre-existing request, cancel it if it's fetching a different URL. |
138 | | - mImageContainer.cancelRequest(); |
139 | | - BitmapDrawable actualDrawable = (BitmapDrawable)getDrawable(); |
140 | | - if(actualDrawable != null && actualDrawable.getBitmap() != null) { |
141 | | - setImageBitmap(null); |
142 | | - if(loadingView != null) { |
143 | | - loadingView.setVisibility(View.VISIBLE); |
144 | | - } |
145 | | - } |
146 | | - } |
147 | | - } |
148 | | - |
149 | | - // The pre-existing content of this view didn't match the current URL. Load the new image |
150 | | - // from the network. |
151 | | - ImageContainer newContainer = mImageLoader.get(mUrl, |
152 | | - new ImageListener() { |
153 | | - @Override |
154 | | - public void onErrorResponse(final VolleyError error) { |
155 | | - if(!tryOriginal) { |
156 | | - post(new Runnable() { |
157 | | - @Override |
158 | | - public void run() { |
159 | | - loadImageIfNecessary(false, true); |
160 | | - } |
161 | | - }); |
162 | | - } |
163 | | - } |
164 | | - |
165 | | - @Override |
166 | | - public void onResponse(final ImageContainer response, boolean isImmediate) { |
167 | | - // If this was an immediate response that was delivered inside of a layout |
168 | | - // pass do not set the image immediately as it will trigger a requestLayout |
169 | | - // inside of a layout. Instead, defer setting the image by posting back to |
170 | | - // the main thread. |
171 | | - if (isImmediate && isInLayoutPass) { |
172 | | - post(new Runnable() { |
173 | | - @Override |
174 | | - public void run() { |
175 | | - onResponse(response, false); |
176 | | - } |
177 | | - }); |
178 | | - return; |
179 | | - } |
180 | | - |
181 | | - if (response.getBitmap() != null) { |
182 | | - setImageBitmap(response.getBitmap()); |
183 | | - if(tryOriginal && mMedia instanceof Contribution && (response.getBitmap().getWidth() > mMedia.getWidth() || response.getBitmap().getHeight() > mMedia.getHeight())) { |
184 | | - // If there is no width information for this image, save it. This speeds up image loading massively for smaller images |
185 | | - mMedia.setHeight(response.getBitmap().getHeight()); |
186 | | - mMedia.setWidth(response.getBitmap().getWidth()); |
187 | | - ((Contribution)mMedia).setContentProviderClient(MediaWikiImageView.this.getContext().getContentResolver().acquireContentProviderClient(ContributionsContentProvider.AUTHORITY)); |
188 | | - ((Contribution)mMedia).save(); |
189 | | - } |
190 | | - if(loadingView != null) { |
191 | | - loadingView.setVisibility(View.GONE); |
192 | | - } |
193 | | - } else { |
194 | | - // I'm not really sure where this would hit but not onError |
195 | | - } |
196 | | - } |
197 | | - }); |
198 | | - |
199 | | - // update the ImageContainer to be the new bitmap container. |
200 | | - mImageContainer = newContainer; |
201 | | - } |
202 | | - |
203 | | - @Override |
204 | | - protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
205 | | - super.onLayout(changed, left, top, right, bottom); |
206 | | - loadImageIfNecessary(true); |
207 | 42 | } |
208 | 43 |
|
209 | 44 | @Override |
210 | 45 | protected void onDetachedFromWindow() { |
211 | | - if (mImageContainer != null) { |
212 | | - // If the view was bound to an image request, cancel it and clear |
213 | | - // out the image from the view. |
214 | | - mImageContainer.cancelRequest(); |
215 | | - setImageBitmap(null); |
216 | | - // also clear out the container so we can reload the image if necessary. |
217 | | - mImageContainer = null; |
| 46 | + if (currentThumbnailTask != null) { |
| 47 | + currentThumbnailTask.cancel(true); |
218 | 48 | } |
219 | 49 | super.onDetachedFromWindow(); |
220 | 50 | } |
221 | 51 |
|
222 | | - @Override |
223 | | - protected void drawableStateChanged() { |
224 | | - super.drawableStateChanged(); |
225 | | - invalidate(); |
| 52 | + private void setImageUrl(@Nullable String url) { |
| 53 | + setImageURI(url); |
| 54 | + } |
| 55 | + |
| 56 | + private class ThumbnailFetchTask extends MediaThumbnailFetchTask { |
| 57 | + @Override |
| 58 | + protected void onPostExecute(String result) { |
| 59 | + if (isCancelled()) { |
| 60 | + return; |
| 61 | + } |
| 62 | + setImageUrl(result); |
| 63 | + } |
226 | 64 | } |
227 | 65 | } |
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