improve:白板翻页性能

2026-02-22 12:42:47 +08:00
parent 705f4fd155
commit 3d0a960337
2 changed files with 11 additions and 5 deletions
@@ -512,11 +512,19 @@ namespace Ink_Canvas
            if (pageIndex == CurrentWhiteboardIndex)
            {
                ClearStrokes(true);
-                if (CurrentWhiteboardIndex != WhiteboardTotalCount)
-                    for (var i = CurrentWhiteboardIndex; i <= WhiteboardTotalCount; i++)
+
+                var oldTotal = WhiteboardTotalCount;
+                if (CurrentWhiteboardIndex != oldTotal)
+                {
+                    for (var i = CurrentWhiteboardIndex; i < oldTotal; i++)
                        TimeMachineHistories[i] = TimeMachineHistories[i + 1];
+                }
                else
+                {
                    CurrentWhiteboardIndex--;
+                }
+
+                TimeMachineHistories[oldTotal] = null;
                WhiteboardTotalCount--;
                RestoreStrokes();
            }