add:issue #190

2025-09-13 18:20:56 +08:00
parent a5ac282ab6
commit eef00eb28f
3 changed files with 80 additions and 5 deletions
@@ -29,6 +29,11 @@ namespace Ink_Canvas.Helpers
        private DateTime _inkLockUntil = DateTime.MinValue;
        private int _lockedSlideIndex = -1;
        private const int InkLockMilliseconds = 500;
+        
+        // 添加快速切换保护机制
+        private DateTime _lastSwitchTime = DateTime.MinValue;
+        private int _lastSwitchSlideIndex = -1;
+        private const int MinSwitchIntervalMs = 100; // 最小切换间隔100毫秒
        #endregion

        #region Constructor
@@ -190,6 +195,15 @@ namespace Ink_Canvas.Helpers
            {
                try
                {
+                    // 检查快速切换保护
+                    var now = DateTime.Now;
+                    if (now - _lastSwitchTime < TimeSpan.FromMilliseconds(MinSwitchIntervalMs) && 
+                        _lastSwitchSlideIndex == slideIndex)
+                    {
+                        LogHelper.WriteLogToFile($"快速切换保护：忽略重复的页面切换请求 {slideIndex}", LogHelper.LogType.Warning);
+                        return LoadSlideStrokes(slideIndex);
+                    }
+
                    // 如果有当前墨迹，先保存到正确的页面
                    if (currentStrokes != null && currentStrokes.Count > 0)
                    {
@@ -213,6 +227,11 @@ namespace Ink_Canvas.Helpers

                    // 加载新页面的墨迹
                    var newStrokes = LoadSlideStrokes(slideIndex);
+                    
+                    // 更新切换记录
+                    _lastSwitchTime = now;
+                    _lastSwitchSlideIndex = slideIndex;
+                    
                    LogHelper.WriteLogToFile($"已切换到第{slideIndex}页，加载墨迹数量: {newStrokes.Count}", LogHelper.LogType.Trace);

                    return newStrokes;