From 67764300a85bee6f4fa6bdbe12fb35f25a5cd2fd Mon Sep 17 00:00:00 2001
From: davotoula <david.kaspar@gmail.com>
Date: Tue, 16 Jun 2026 20:37:39 +0200
Subject: [PATCH] feat: hide OS system bars during full-screen media

Install a DisposableEffect in ZoomableImageDialog that hides both status
and navigation bars via WindowInsetsControllerCompat when the full-screen
media dialog opens, and restores them on dispose.
---
 .../ui/components/ZoomableContentDialog.kt      | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentDialog.kt b/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentDialog.kt
index 93ab093d99..56b3440198 100644
--- a/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentDialog.kt
+++ b/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentDialog.kt
@@ -53,6 +53,7 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedButton
 import androidx.compose.material3.Surface
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.getValue
@@ -71,10 +72,13 @@ import androidx.compose.ui.layout.boundsInWindow
 import androidx.compose.ui.layout.onGloballyPositioned
 import androidx.compose.ui.platform.LocalConfiguration
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalView
 import androidx.compose.ui.util.lerp
 import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
 import androidx.core.net.toUri
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.WindowInsetsControllerCompat
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.google.accompanist.permissions.ExperimentalPermissionsApi
 import com.google.accompanist.permissions.isGranted
@@ -206,6 +210,19 @@ fun ZoomableImageDialog(
             dialogWindow.attributes = attributes
         }
 
+        // Go fully immersive while the full-screen media viewer is open: hide both OS bars and
+        // restore them when the dialog closes. BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE lets the user
+        // swipe to peek the bars. Applies to full-screen images and video alike (shared dialog).
+        val dialogView = LocalView.current
+        DisposableEffect(dialogWindow, dialogView) {
+            val controller = dialogWindow?.let { WindowInsetsControllerCompat(it, dialogView) }
+            controller?.apply {
+                systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+                hide(WindowInsetsCompat.Type.systemBars())
+            }
+            onDispose { controller?.show(WindowInsetsCompat.Type.systemBars()) }
+        }
+
         Box(modifier = Modifier.fillMaxSize()) {
             // Background surface that fades in as the content grows to fullscreen.
             Surface(