perf: eliminate repeated favorites sort map and grid recompute

1 files changed, 45 insertions, 0 deletions

diff --git a/Sora/Views/Shared/ThumbnailGridView.swift b/Sora/Views/Shared/ThumbnailGridView.swift
new file mode 100644
index 0000000..a7130c2
--- /dev/null
+++ b/Sora/Views/Shared/ThumbnailGridView.swift
@@ -0,0 +1,45 @@
+import SwiftUI
+import WaterfallGrid
+
+struct ThumbnailGridView<Item: Hashable & Identifiable, Content: View>: View {
+  let items: [Item]
+  let columnCount: Int
+  let useAlternativeGrid: Bool
+  let columnsData: [[Item]]
+  let content: (Item) -> Content
+
+  var body: some View {
+    if useAlternativeGrid {
+      HStack(alignment: .top) {
+        ForEach(0..<columnCount, id: \.self) { columnIndex in
+          LazyVStack {
+            ForEach(columnsData[columnIndex], id: \.id) { item in
+              content(item)
+                .id(item.id)
+            }
+          }
+          .transaction { $0.animation = nil }
+        }
+      }
+      #if os(macOS)
+        .padding(8)
+      #else
+        .padding(.horizontal)
+      #endif
+      .transition(.opacity)
+    } else {
+      WaterfallGrid(items, id: \.id) { item in
+        content(item)
+          .id(item.id)
+      }
+      .gridStyle(columns: columnCount)
+      .transaction { $0.animation = nil }
+      #if os(macOS)
+        .padding(8)
+      #else
+        .padding(.horizontal)
+      #endif
+      .transition(.opacity)
+    }
+  }
+}