Fix FAB animation

app/src/main/kotlin/com/hippo/ehviewer/ui/main/FabLayout.kt

@@ -15,8 +15,10 @@ import androidx.compose.material3.Icon
 import androidx.compose.material3.SmallFloatingActionButton
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.graphicsLayer
@@ -39,8 +41,12 @@ fun FabLayout(
     expanded: Boolean,
     onExpandChanged: (Boolean) -> Unit,
     autoCancel: Boolean,
+    showAddButton: Boolean = true,
+    delayOnShow: Boolean = false,
     fabBuilder: FabBuilder.() -> Unit,
 ) {
+    var delayOnExpand by remember { mutableStateOf(hidden) }
+    var delayOnHide by remember { mutableStateOf(expanded) }
     val secondaryFab = remember(fabBuilder) {
         buildList {
             fabBuilder { icon, action ->
@@ -62,9 +68,9 @@ fun FabLayout(
     val coroutineScope = rememberCoroutineScope()
     val appearState by animateFloatAsState(
         targetValue = if (hidden) 0f else 1f,
-        animationSpec = tween(FAB_ANIMATE_TIME, if (hidden) 0 else FAB_ANIMATE_TIME),
+        animationSpec = tween(FAB_ANIMATE_TIME, if (delayOnHide || !hidden && delayOnShow) FAB_ANIMATE_TIME else 0),
         label = "hiddenState",
-    )
+    ) { delayOnExpand = hidden }
     Box(
         modifier = Modifier.fillMaxSize().navigationBarsPadding().padding(16.dp),
         contentAlignment = Alignment.BottomEnd,
@@ -77,7 +83,11 @@ fun FabLayout(
             },
             contentAlignment = Alignment.Center,
         ) {
-            val animatedProgress by animateFloatMergePredictiveBackAsState(expanded, tween(FAB_ANIMATE_TIME)) {
+            val animatedProgress by animateFloatMergePredictiveBackAsState(
+                expanded,
+                tween(FAB_ANIMATE_TIME, if (delayOnExpand) FAB_ANIMATE_TIME else 0),
+                finishedListener = { delayOnHide = expanded },
+            ) {
                 onExpandChanged(false)
             }
             FloatingActionButton(
@@ -86,8 +96,12 @@ fun FabLayout(
                 Icon(
                     imageVector = Icons.Default.Close,
                     contentDescription = null,
-                    modifier = Modifier.graphicsLayer {
-                        rotationZ = lerp(0f, -135f, animatedProgress)
+                    modifier = if (showAddButton) {
+                        Modifier.graphicsLayer {
+                            rotationZ = lerp(0f, -135f, animatedProgress)
+                        }
+                    } else {
+                        Modifier
                     },
                 )
             }

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

@@ -497,6 +497,7 @@ fun DownloadsScreen(navigator: DestinationsNavigator) {
             selectMode = false
         },
         autoCancel = false,
+        showAddButton = false,
     ) {
         onClick(Icons.Default.DoneAll) {
             val info = list.associateBy { it.gid }

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

@@ -321,6 +321,7 @@ fun FavouritesScreen(navigator: DestinationsNavigator) {
             selectMode = false
         },
         autoCancel = !selectMode,
+        delayOnShow = true,
     ) {
         if (!select) {
             onClick(EhIcons.Default.GoTo) {

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

@@ -813,6 +813,7 @@ fun GalleryListScreen(lub: ListUrlBuilder, navigator: DestinationsNavigator) {
         expanded = expanded,
         onExpandChanged = { expanded = it },
         autoCancel = true,
+        delayOnShow = true,
     ) {
         onClick(Icons.Default.Refresh) {
             urlBuilder.setIndex(null)

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

@@ -250,8 +250,8 @@ fun SearchBarScreen(
             },
             floatingActionButton = {
                 val hiddenState by animateFloatAsState(
-                    targetValue = if (showSearchFab) 1f else 0f,
-                    animationSpec = tween(FAB_ANIMATE_TIME, if (showSearchFab) FAB_ANIMATE_TIME else 0),
+                    targetValue = if (showSearchFab && !active) 1f else 0f,
+                    animationSpec = tween(FAB_ANIMATE_TIME, if (showSearchFab && !active) FAB_ANIMATE_TIME else 0),
                     label = "hiddenState",
                 )
                 FloatingActionButton(