Optimize GalleryInfo composer path calculation

app/src/main/java/com/hippo/ehviewer/ui/main/GalleryInfo.kt

@@ -34,6 +34,7 @@ import com.hippo.ehviewer.client.EhUtils
 import com.hippo.ehviewer.client.data.GalleryInfo
 import com.hippo.ehviewer.download.DownloadManager
 import com.hippo.ehviewer.ui.tools.CrystalCard
+import com.hippo.ehviewer.ui.tools.Deferred
 import com.hippo.ehviewer.ui.tools.ElevatedCard
 import com.hippo.ehviewer.ui.tools.GalleryListCardRating
 
@@ -109,12 +110,14 @@ fun GalleryInfoListItem(
                             bottom.linkTo(if (showFav) favRef.top else postedRef.top)
                         },
                     ) {
-                        if (DownloadManager.containDownloadInfo(info.gid)) {
-                            Icon(
-                                Icons.Default.Download,
-                                contentDescription = null,
-                                modifier = Modifier.size(16.dp),
-                            )
+                        Deferred({ DownloadManager.containDownloadInfo(info.gid) }) {
+                            if (it) {
+                                Icon(
+                                    Icons.Default.Download,
+                                    contentDescription = null,
+                                    modifier = Modifier.size(16.dp),
+                                )
+                            }
                         }
                         Text(text = info.simpleLanguage.orEmpty())
                         if (info.pages != 0 && showPages) {

app/src/main/java/com/hippo/ehviewer/ui/tools/DeferedComposable.kt

@@ -4,15 +4,15 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
+import eu.kanade.tachiyomi.util.lang.withIOContext
 
 @Composable
-fun Deferred(block: suspend () -> Unit, content: @Composable () -> Unit) {
-    var completed by rememberSaveable { mutableStateOf(false) }
+fun <T> Deferred(block: suspend () -> T, content: @Composable (T) -> Unit) {
+    var completed by remember { mutableStateOf<T?>(null) }
     LaunchedEffect(key1 = Unit) {
-        block()
-        completed = true
+        completed = withIOContext { block() }
     }
-    if (completed) content()
+    completed?.let { content(it) }
 }