Avoids creation of the LiveData in every recomposition.

app/src/main/java/com/vitorpamplona/amethyst/model/Note.kt

@@ -777,6 +777,10 @@ class NoteLiveSet(u: Note) {
         }.toImmutableList()
     }
 
+    val content = innerMetadata.map {
+        it.note.event?.content() ?: ""
+    }
+
     fun isInUse(): Boolean {
         return metadata.hasObservers() ||
             reactions.hasObservers() ||

app/src/main/java/com/vitorpamplona/amethyst/ui/navigation/DrawerContent.kt

@@ -60,7 +60,6 @@ import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
-import androidx.lifecycle.map
 import coil.compose.AsyncImage
 import com.vitorpamplona.amethyst.BuildConfig
 import com.vitorpamplona.amethyst.LocalPreferences
@@ -178,7 +177,8 @@ fun ProfileContent(
                 painter = painterResource(R.drawable.profile_banner),
                 contentDescription = stringResource(R.string.profile_banner),
                 contentScale = ContentScale.FillWidth,
-                modifier = Modifier.fillMaxWidth()
+                modifier = Modifier
+                    .fillMaxWidth()
                     .height(120.dp)
             )
         }
@@ -290,9 +290,7 @@ private fun EditStatusBoxes(baseAccountUser: User, accountViewModel: AccountView
             )
         } else {
             statuses.forEach {
-                val originalStatus by it.live().metadata.map {
-                    it.note.event?.content() ?: ""
-                }.observeAsState(it.event?.content() ?: "")
+                val originalStatus by it.live().content.observeAsState("")
 
                 val thisStatus = remember {
                     mutableStateOf(originalStatus)

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ChatroomMessageCompose.kt

@@ -41,6 +41,7 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.distinctUntilChanged
 import androidx.lifecycle.map
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.model.Note
@@ -121,9 +122,11 @@ fun CheckHiddenChatMessage(
     nav: (String) -> Unit,
     onWantsToReply: (Note) -> Unit
 ) {
-    val isHidden by accountViewModel.account.liveHiddenUsers.map {
-        baseNote.isHiddenFor(it)
-    }.observeAsState(accountViewModel.isNoteHidden(baseNote))
+    val isHidden by remember {
+        accountViewModel.account.liveHiddenUsers.map {
+            baseNote.isHiddenFor(it)
+        }.distinctUntilChanged()
+    }.observeAsState(false)
 
     if (!isHidden) {
         LoadedChatMessageCompose(

app/src/main/java/com/vitorpamplona/amethyst/ui/note/NoteCompose.kt

@@ -302,9 +302,11 @@ fun CheckHiddenNoteCompose(
             nav = nav
         )
     } else {
-        val isHidden by accountViewModel.account.liveHiddenUsers.map {
-            note.isHiddenFor(it)
-        }.observeAsState(accountViewModel.isNoteHidden(note))
+        val isHidden by remember(note) {
+            accountViewModel.account.liveHiddenUsers.map {
+                note.isHiddenFor(it)
+            }.distinctUntilChanged()
+        }.observeAsState(false)
 
         Crossfade(targetState = isHidden) {
             if (!it) {
@@ -791,11 +793,11 @@ private fun ShortCommunityActionOptions(
 
 @Composable
 fun WatchAddressableNoteFollows(note: AddressableNote, accountViewModel: AccountViewModel, onFollowChanges: @Composable (Boolean) -> Unit) {
-    val showFollowingMark by accountViewModel.userFollows.map {
-        it.user.latestContactList?.isTaggedAddressableNote(note.idHex) ?: false
-    }.distinctUntilChanged().observeAsState(
-        accountViewModel.userProfile().latestContactList?.isTaggedAddressableNote(note.idHex) ?: false
-    )
+    val showFollowingMark by remember {
+        accountViewModel.userFollows.map {
+            it.user.latestContactList?.isTaggedAddressableNote(note.idHex) ?: false
+        }.distinctUntilChanged()
+    }.observeAsState(false)
 
     onFollowChanges(showFollowingMark)
 }
@@ -2212,9 +2214,11 @@ private fun EmojiListOptions(
         accountViewModel
     ) {
         it?.let { usersEmojiList ->
-            val hasAddedThis by usersEmojiList.live().metadata.map {
-                usersEmojiList.event?.isTaggedAddressableNote(emojiPackNote.idHex)
-            }.distinctUntilChanged().observeAsState()
+            val hasAddedThis by remember {
+                usersEmojiList.live().metadata.map {
+                    usersEmojiList.event?.isTaggedAddressableNote(emojiPackNote.idHex)
+                }.distinctUntilChanged()
+            }.observeAsState()
 
             Crossfade(targetState = hasAddedThis) {
                 val scope = rememberCoroutineScope()

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ReactionsRow.kt

@@ -692,9 +692,11 @@ fun BoostReaction(
 
 @Composable
 fun BoostIcon(baseNote: Note, iconSize: Dp = Size20dp, grayTint: Color, accountViewModel: AccountViewModel) {
-    val iconTint by baseNote.live().boosts.map {
-        if (it.note.isBoostedBy(accountViewModel.userProfile())) Color.Unspecified else grayTint
-    }.distinctUntilChanged().observeAsState(grayTint)
+    val iconTint by remember(baseNote) {
+        baseNote.live().boosts.map {
+            if (it.note.isBoostedBy(accountViewModel.userProfile())) Color.Unspecified else grayTint
+        }.distinctUntilChanged()
+    }.observeAsState(grayTint)
 
     val iconModifier = remember {
         Modifier.size(iconSize)

app/src/main/java/com/vitorpamplona/amethyst/ui/note/UserProfilePicture.kt

@@ -363,11 +363,11 @@ fun ObserveAndDisplayFollowingMark(userHex: String, iconSize: Dp, accountViewMod
 
 @Composable
 fun WatchUserFollows(userHex: String, accountViewModel: AccountViewModel, onFollowChanges: @Composable (Boolean) -> Unit) {
-    val showFollowingMark by accountViewModel.userFollows.map {
-        it.user.isFollowingCached(userHex) || (userHex == accountViewModel.account.userProfile().pubkeyHex)
-    }.distinctUntilChanged().observeAsState(
-        accountViewModel.account.userProfile().isFollowingCached(userHex) || (userHex == accountViewModel.account.userProfile().pubkeyHex)
-    )
+    val showFollowingMark by remember {
+        accountViewModel.userFollows.map {
+            it.user.isFollowingCached(userHex) || (userHex == accountViewModel.account.userProfile().pubkeyHex)
+        }.distinctUntilChanged()
+    }.observeAsState(false)
 
     onFollowChanges(showFollowingMark)
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/note/UsernameDisplay.kt

@@ -21,8 +21,6 @@ import androidx.compose.ui.platform.LocalLifecycleOwner
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.lifecycle.LifecycleOwner
-import androidx.lifecycle.distinctUntilChanged
-import androidx.lifecycle.map
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.service.tts.TextToSpeechHelper
@@ -34,9 +32,7 @@ import com.vitorpamplona.quartz.events.ImmutableListOfLists
 
 @Composable
 fun NoteUsernameDisplay(baseNote: Note, weight: Modifier = Modifier, showPlayButton: Boolean = true, textColor: Color = Color.Unspecified) {
-    val authorState by baseNote.live().metadata.map {
-        it.note.author
-    }.distinctUntilChanged().observeAsState(baseNote.author)
+    val authorState by baseNote.live().authorChanges.observeAsState(baseNote.author)
 
     Crossfade(targetState = authorState, modifier = weight) {
         it?.let {