Ensure screen does not turn off when playing a video (#1519)

changelog.d/1519.bugfix

@@ -0,0 +1 @@
+Ensure screen does not turn off when playing a video

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/LocalMediaView.kt

@@ -66,6 +66,7 @@ import io.element.android.libraries.core.mimetype.MimeTypes.isMimeTypeVideo
 import io.element.android.libraries.designsystem.theme.components.Icon
 import io.element.android.libraries.designsystem.theme.components.Text
 import io.element.android.libraries.designsystem.utils.CommonDrawables
+import io.element.android.libraries.designsystem.utils.KeepScreenOn
 import io.element.android.libraries.designsystem.utils.OnLifecycleEvent
 import io.element.android.libraries.theme.ElementTheme
 import me.saket.telephoto.zoomable.ZoomSpec
@@ -152,6 +153,10 @@ private fun MediaVideoView(
         override fun onRenderedFirstFrame() {
             localMediaViewState.isReady = true
         }
+
+        override fun onIsPlayingChanged(isPlaying: Boolean) {
+            localMediaViewState.isPlaying = isPlaying
+        }
     }
     val exoPlayer = remember {
         ExoPlayerWrapper.create(context)
@@ -168,6 +173,7 @@ private fun MediaVideoView(
     } else {
         exoPlayer.setMediaItems(emptyList())
     }
+    KeepScreenOn(localMediaViewState.isPlaying)
     AndroidView(
         factory = {
             PlayerView(context).apply {

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/media/local/LocalMediaViewState.kt

@@ -26,6 +26,7 @@ import androidx.compose.runtime.setValue
 @Stable
 class LocalMediaViewState {
     var isReady: Boolean by mutableStateOf(false)
+    var isPlaying: Boolean by mutableStateOf(false)
 }
 
 @Composable

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/utils/KeepScreenOn.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2023 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 io.element.android.libraries.designsystem.utils
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.ui.platform.LocalView
+
+@Composable
+fun KeepScreenOn(
+    keepScreenOn: Boolean = true
+) {
+    if (keepScreenOn) {
+        val currentView = LocalView.current
+        DisposableEffect(Unit) {
+            currentView.keepScreenOn = true
+            onDispose {
+                currentView.keepScreenOn = false
+            }
+        }
+    }
+}