Updated video player logic: now it pauses also when another window is occluding it

app/build.gradle.kts

@@ -123,6 +123,7 @@ dependencies {
     implementation(projects.feature.results)
 
     implementation(projects.core.theme)
+    implementation(projects.core.util)
 
     baselineProfile(projects.benchmark)
 

app/src/main/java/com/android/developers/androidify/MainActivity.kt

@@ -15,22 +15,31 @@
  */
 package com.android.developers.androidify
 
+import android.os.Build
 import android.os.Bundle
+import android.util.Log
+import android.view.WindowManager
+import android.window.TrustedPresentationThresholds
 import androidx.activity.ComponentActivity
 import androidx.activity.SystemBarStyle
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.toArgb
 import com.android.developers.androidify.navigation.MainNavigation
 import com.android.developers.androidify.theme.AndroidifyTheme
+import com.android.developers.androidify.util.LocalOcclusion
 import dagger.hilt.android.AndroidEntryPoint
 
 @ExperimentalMaterial3ExpressiveApi
 @AndroidEntryPoint
 class MainActivity : ComponentActivity() {
 
+    private val isWindowOccluded = mutableStateOf(false)
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
@@ -46,8 +55,30 @@ class MainActivity : ComponentActivity() {
                         Color.Transparent.toArgb(),
                     ),
                 )
-                MainNavigation()
+                CompositionLocalProvider(LocalOcclusion provides isWindowOccluded) {
+                    MainNavigation()
+                }
             }
         }
     }
+
+    override fun onAttachedToWindow() {
+        super.onAttachedToWindow()
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.VANILLA_ICE_CREAM) {
+            val minAlpha = 1f
+            val minFractionRendered = 0.25f
+            val stabilityRequirements = 500
+            val presentationThreshold = TrustedPresentationThresholds(
+                minAlpha, minFractionRendered, stabilityRequirements
+            )
+
+            val windowManager = getSystemService(WINDOW_SERVICE) as WindowManager
+            windowManager.registerTrustedPresentationListener(
+                window.decorView.windowToken,
+                presentationThreshold,
+                mainExecutor
+            ) { isMinFractionRendered -> isWindowOccluded.value = !isMinFractionRendered }
+        }
+    }
+
 }

app/src/main/java/com/android/developers/androidify/navigation/MainNavigation.kt

@@ -26,6 +26,7 @@ import androidx.compose.animation.scaleOut
 import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -42,7 +43,6 @@ import com.android.developers.androidify.creation.CreationScreen
 import com.android.developers.androidify.home.AboutScreen
 import com.android.developers.androidify.home.HomeScreen
 import com.android.developers.androidify.theme.transitions.ColorSplashTransitionScreen
-import com.google.android.gms.oss.licenses.OssLicensesActivity
 import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 
 @ExperimentalMaterial3ExpressiveApi

core/util/src/main/java/com/android/developers/androidify/util/LocalOcclusion.kt

@@ -0,0 +1,7 @@
+package com.android.developers.androidify.util
+
+import androidx.compose.runtime.compositionLocalOf
+import androidx.compose.runtime.mutableStateOf
+
+val LocalOcclusion = compositionLocalOf { mutableStateOf(false) }
+

feature/home/src/androidTest/java/com/android/developers/androidify/home/HomeScreenTest.kt

@@ -54,7 +54,7 @@ class HomeScreenTest {
                     },
                     onAboutClicked = {}, // Provide a default or mock value,
                     videoLink = "",
-                    dancingBotLink = "",
+                    dancingBotLink = ""
                 )
             }
         }
@@ -78,7 +78,7 @@ class HomeScreenTest {
                     onClickLetsGo = { },
                     onAboutClicked = {},
                     videoLink = "",
-                    dancingBotLink = "",
+                    dancingBotLink = ""
                 )
             }
         }

feature/home/src/main/java/com/android/developers/androidify/home/HomeScreen.kt

@@ -109,6 +109,7 @@ import com.android.developers.androidify.theme.components.AndroidifyTopAppBar
 import com.android.developers.androidify.theme.components.AndroidifyTranslucentTopAppBar
 import com.android.developers.androidify.theme.components.SquiggleBackground
 import com.android.developers.androidify.util.LargeScreensPreview
+import com.android.developers.androidify.util.LocalOcclusion
 import com.android.developers.androidify.util.PhonePreview
 import com.android.developers.androidify.util.isAtLeastMedium
 import com.android.developers.androidify.theme.R as ThemeR
@@ -123,6 +124,7 @@ fun HomeScreen(
     onAboutClicked: () -> Unit = {},
 ) {
     val state = homeScreenViewModel.state.collectAsStateWithLifecycle()
+
     if (!state.value.isAppActive) {
         AppInactiveScreen()
     } else {
@@ -537,6 +539,7 @@ private fun VideoPlayer(
     }
 
     var videoFullyOnScreen by remember { mutableStateOf(false) }
+    val isWindowOccluded  = LocalOcclusion.current
     Box(
         Modifier
             .background(MaterialTheme.colorScheme.surfaceContainerLowest)
@@ -547,8 +550,8 @@ private fun VideoPlayer(
             .then(modifier),
     ) {
         player?.let { currentPlayer ->
-            LaunchedEffect(videoFullyOnScreen) {
-                if (videoFullyOnScreen) currentPlayer.play() else currentPlayer.pause()
+            LaunchedEffect(videoFullyOnScreen, LocalOcclusion.current.value) {
+                if (videoFullyOnScreen && !isWindowOccluded.value) currentPlayer.play() else currentPlayer.pause()
             }
 
             // Render the video

feature/home/src/screenshotTest/java/com/android/developers/androidify/home/HomeScreenScreenshotTest.kt

@@ -35,7 +35,7 @@ class HomeScreenScreenshotTest {
                     onClickLetsGo = { },
                     onAboutClicked = {},
                     videoLink = "",
-                    dancingBotLink = "",
+                    dancingBotLink = ""
                 )
             }
         }