Notification: display room avatar

vector/src/main/java/im/vector/riotredesign/features/notifications/BitmapLoader.kt

@@ -0,0 +1,124 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * 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 im.vector.riotredesign.features.notifications
+
+import android.content.Context
+import android.graphics.Bitmap
+import android.os.Handler
+import android.os.HandlerThread
+import androidx.annotation.WorkerThread
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.DecodeFormat
+import timber.log.Timber
+
+/**
+ * FIXME It works, but it does not refresh the notification, when it's already displayed
+ */
+class BitmapLoader(val context: Context,
+                   val listener: BitmapLoaderListener) {
+
+    /**
+     * Avatar Url -> Icon
+     */
+    private val cache = HashMap<String, Bitmap>()
+
+    // URLs to load
+    private val toLoad = HashSet<String>()
+
+    // Black list of URLs (broken URL, etc.)
+    private val blacklist = HashSet<String>()
+
+    private var uiHandler = Handler()
+
+    private val handlerThread: HandlerThread = HandlerThread("BitmapLoader", Thread.MIN_PRIORITY)
+    private var backgroundHandler: Handler
+
+    init {
+        handlerThread.start()
+        backgroundHandler = Handler(handlerThread.looper)
+    }
+
+    /**
+     * Get icon of a room.
+     * If already in cache, use it, else load it and call BitmapLoaderListener.onBitmapsLoaded() when ready
+     */
+    fun getRoomBitmap(path: String?): Bitmap? {
+        if (path == null) {
+            return null
+        }
+
+        synchronized(cache) {
+            if (cache[path] != null) {
+                return cache[path]
+            }
+
+            // Add to the queue, if not blacklisted
+            if (!blacklist.contains(path)) {
+                if (toLoad.contains(path)) {
+                    // Wait
+                } else {
+                    toLoad.add(path)
+
+                    backgroundHandler.post {
+                        loadRoomBitmap(path)
+                    }
+                }
+            }
+        }
+
+        return null
+    }
+
+    @WorkerThread
+    private fun loadRoomBitmap(path: String) {
+        val bitmap = path.let {
+            try {
+                Glide.with(context)
+                        .asBitmap()
+                        .load(path)
+                        .format(DecodeFormat.PREFER_ARGB_8888)
+                        .submit()
+                        .get()
+            } catch (e: Exception) {
+                Timber.e(e, "decodeFile failed")
+                null
+            }
+        }
+
+        synchronized(cache) {
+            if (bitmap == null) {
+                // Add to the blacklist
+                blacklist.add(path)
+            } else {
+                cache[path] = bitmap
+            }
+
+            toLoad.remove(path)
+
+            if (toLoad.isEmpty()) {
+                uiHandler.post {
+                    listener.onBitmapsLoaded()
+                }
+            }
+        }
+    }
+
+
+    interface BitmapLoaderListener {
+        fun onBitmapsLoaded()
+    }
+}

vector/src/main/java/im/vector/riotredesign/features/notifications/NotificationDrawerManager.kt

@@ -18,8 +18,6 @@ package im.vector.riotredesign.features.notifications
 import android.app.Notification
 import android.content.Context
 import android.graphics.Bitmap
-import android.graphics.BitmapFactory
-import android.text.TextUtils
 import androidx.core.app.NotificationCompat
 import androidx.core.app.Person
 import im.vector.matrix.android.api.Matrix
@@ -59,6 +57,14 @@ class NotificationDrawerManager(val context: Context,
                 }
             })
 
+    private var bitmapLoader = BitmapLoader(context,
+            object : BitmapLoader.BitmapLoaderListener {
+                override fun onBitmapsLoaded() {
+                    // Force refresh
+                    refreshNotificationDrawer()
+                }
+            })
+
     /**
     Should be called as soon as a new event is ready to be displayed.
     The notification corresponding to this event will not be displayed until
@@ -372,19 +378,10 @@ class NotificationDrawerManager(val context: Context,
         if (events.isEmpty()) return null
 
         //Use the last event (most recent?)
-        val roomAvatarPath = events[events.size - 1].roomAvatarPath
-                ?: events[events.size - 1].senderAvatarPath
-        if (!TextUtils.isEmpty(roomAvatarPath)) {
-            val options = BitmapFactory.Options()
-            options.inPreferredConfig = Bitmap.Config.ARGB_8888
-            try {
-                return BitmapFactory.decodeFile(roomAvatarPath, options)
-            } catch (oom: OutOfMemoryError) {
-                Timber.e(oom, "decodeFile failed with an oom")
-            }
+        val roomAvatarPath = events.last().roomAvatarPath
+                ?: events.last().senderAvatarPath
 
-        }
-        return null
+        return bitmapLoader.getRoomBitmap(roomAvatarPath)
     }
 
     private fun shouldIgnoreMessageEventInRoom(roomId: String?): Boolean {

vector/src/main/java/im/vector/riotredesign/features/notifications/RoomEventGroupInfo.kt

@@ -22,7 +22,6 @@ package im.vector.riotredesign.features.notifications
 data class RoomEventGroupInfo(
         val roomId: String,
         val roomDisplayName: String = "",
-        val roomAvatarPath: String? = null,
         val isDirect: Boolean = false
 ) {
     // An event in the list has not yet been display