Use singleton empty WindowInsets

app/src/main/kotlin/com/hippo/ehviewer/ui/reader/ReaderScreen.kt

@@ -221,7 +221,7 @@ fun AnimatedVisibilityScope.ReaderScreen(pageLoader: PageLoader2, info: BaseGall
                             onDismissRequest = { dispose() },
                             modifier = Modifier.windowInsetsPadding(WindowInsets.safeDrawing.only(WindowInsetsSides.Top)),
                             sheetState = state,
-                            contentWindowInsets = { WindowInsets(0) },
+                            contentWindowInsets = { EmptyWindowInsets },
                         ) {
                             ReaderPageSheetMeta(
                                 retry = { pageLoader.retryPage(page.index) },
@@ -324,7 +324,7 @@ fun AnimatedVisibilityScope.ReaderScreen(pageLoader: PageLoader2, info: BaseGall
                             // Yeah, I know color state should not be read here, but we have to do it...
                             scrimColor = scrim,
                             dragHandle = null,
-                            contentWindowInsets = { WindowInsets(0) },
+                            contentWindowInsets = { EmptyWindowInsets },
                         ) {
                             SettingsPager(modifier = Modifier.fillMaxSize()) { page ->
                                 isColorFilter = page == 2

app/src/main/kotlin/com/hippo/ehviewer/ui/screen/DownloadsScreen.kt

@@ -107,6 +107,7 @@ import com.hippo.ehviewer.ui.main.plus
 import com.hippo.ehviewer.ui.navToReader
 import com.hippo.ehviewer.ui.showMoveDownloadLabelList
 import com.hippo.ehviewer.ui.tools.Await
+import com.hippo.ehviewer.ui.tools.EmptyWindowInsets
 import com.hippo.ehviewer.ui.tools.FastScrollLazyColumn
 import com.hippo.ehviewer.ui.tools.FastScrollLazyVerticalStaggeredGrid
 import com.hippo.ehviewer.ui.tools.HapticFeedbackType
@@ -215,7 +216,7 @@ fun AnimatedVisibilityScope.DownloadsScreen(navigator: DestinationsNavigator) =
         fun closeSheet() = launch { drawerState.close() }
         TopAppBar(
             title = { Text(text = labelsStr) },
-            windowInsets = WindowInsets(0, 0, 0, 0),
+            windowInsets = EmptyWindowInsets,
             actions = {
                 if (DownloadsFilterMode.CUSTOM == filterMode) {
                     IconButton(

app/src/main/kotlin/com/hippo/ehviewer/ui/screen/FavoritesScreen.kt

@@ -74,6 +74,7 @@ import com.hippo.ehviewer.ui.main.GalleryInfoGridItem
 import com.hippo.ehviewer.ui.main.GalleryInfoListItem
 import com.hippo.ehviewer.ui.main.GalleryList
 import com.hippo.ehviewer.ui.startDownload
+import com.hippo.ehviewer.ui.tools.EmptyWindowInsets
 import com.hippo.ehviewer.ui.tools.delegateSnapshotUpdate
 import com.hippo.ehviewer.ui.tools.foldToLoadResult
 import com.hippo.ehviewer.ui.tools.rememberInVM
@@ -185,7 +186,7 @@ fun AnimatedVisibilityScope.FavouritesScreen(navigator: DestinationsNavigator) =
         val localFavCount by localFavCountFlow.collectAsState(0)
         TopAppBar(
             title = { Text(text = stringResource(id = R.string.collections)) },
-            windowInsets = WindowInsets(0, 0, 0, 0),
+            windowInsets = EmptyWindowInsets,
         )
         val scope = currentRecomposeScope
         LaunchedEffect(Unit) {

app/src/main/kotlin/com/hippo/ehviewer/ui/screen/GalleryDetailScreen.kt

@@ -20,7 +20,6 @@ import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
@@ -133,6 +132,7 @@ import com.hippo.ehviewer.ui.navToReader
 import com.hippo.ehviewer.ui.openBrowser
 import com.hippo.ehviewer.ui.startDownload
 import com.hippo.ehviewer.ui.tools.CrystalCard
+import com.hippo.ehviewer.ui.tools.EmptyWindowInsets
 import com.hippo.ehviewer.ui.tools.FilledTertiaryIconButton
 import com.hippo.ehviewer.ui.tools.FilledTertiaryIconToggleButton
 import com.hippo.ehviewer.ui.tools.GalleryDetailRating
@@ -800,7 +800,7 @@ fun AnimatedVisibilityScope.GalleryDetailScreen(args: GalleryDetailScreenArgs, n
         if (showBottomSheet && galleryDetail != null) {
             ModalBottomSheet(
                 onDismissRequest = { showBottomSheet = false },
-                contentWindowInsets = { WindowInsets(0, 0, 0, 0) },
+                contentWindowInsets = { EmptyWindowInsets },
             ) {
                 GalleryInfoBottomSheet(galleryDetail, navigator)
             }

app/src/main/kotlin/com/hippo/ehviewer/ui/screen/GalleryListScreen.kt

@@ -126,6 +126,7 @@ import com.hippo.ehviewer.ui.main.GalleryList
 import com.hippo.ehviewer.ui.main.ImageSearch
 import com.hippo.ehviewer.ui.main.SearchFilter
 import com.hippo.ehviewer.ui.tools.Await
+import com.hippo.ehviewer.ui.tools.EmptyWindowInsets
 import com.hippo.ehviewer.ui.tools.HapticFeedbackType
 import com.hippo.ehviewer.ui.tools.animateFloatMergePredictiveBackAsState
 import com.hippo.ehviewer.ui.tools.delegateSnapshotUpdate
@@ -283,7 +284,7 @@ fun AnimatedVisibilityScope.GalleryListScreen(lub: ListUrlBuilder, navigator: De
         ProvideSideSheetContent { sheetState ->
             TopAppBar(
                 title = { Text(text = stringResource(id = R.string.toplist)) },
-                windowInsets = WindowInsets(0),
+                windowInsets = EmptyWindowInsets,
             )
             toplists.forEach { (name, keyword) ->
                 ListItem(
@@ -364,7 +365,7 @@ fun AnimatedVisibilityScope.GalleryListScreen(lub: ListUrlBuilder, navigator: De
                         )
                     }
                 },
-                windowInsets = WindowInsets(0),
+                windowInsets = EmptyWindowInsets,
             )
             Box(modifier = Modifier.fillMaxSize()) {
                 val quickSearchListState = rememberLazyListState()