improve:实时笔锋

Ink Canvas/MainWindow_cs/MW_ShapeDrawing.cs

@@ -2489,6 +2489,7 @@ namespace Ink_Canvas
         /// 用于标识鼠标是否处于按下状态，在绘制过程中使用
         /// </remarks>
         private bool isMouseDown;
+        private bool _isMouseRealtimeInking;
 
         /// <summary>
         /// 触摸按下状态标志
@@ -2512,6 +2513,17 @@ namespace Ink_Canvas
         /// </remarks>
         private void inkCanvas_MouseDown(object sender, MouseButtonEventArgs e)
         {
+            if (e.ChangedButton == MouseButton.Left && ShouldUseRealtimeVelocityBrushTip() && drawingShapeMode == 0)
+            {
+                _isMouseRealtimeInking = true;
+                inkCanvas.EditingMode = InkCanvasEditingMode.None;
+                var p = e.GetPosition(inkCanvas);
+                InitializeRealtimeBrushTipStateFromPoint(MouseRealtimeStrokeId, p);
+                var sv = GetStrokeVisual(MouseRealtimeStrokeId);
+                TryAppendRealtimeVelocityBrushTipPoint(sv, MouseRealtimeStrokeId, p);
+                sv.ForceRedraw();
+            }
+
             inkCanvas.CaptureMouse();
             ViewboxFloatingBar.IsHitTestVisible = false;
             BlackboardUIGridForInkReplay.IsHitTestVisible = false;
@@ -2532,7 +2544,24 @@ namespace Ink_Canvas
         /// </remarks>
         private void inkCanvas_MouseMove(object sender, MouseEventArgs e)
         {
-            if (isMouseDown) MouseTouchMove(e.GetPosition(inkCanvas));
+            if (_isMouseRealtimeInking && isMouseDown)
+            {
+                var sv = GetStrokeVisual(MouseRealtimeStrokeId);
+                var handled = TryAppendRealtimeVelocityBrushTipPoint(sv, MouseRealtimeStrokeId, e.GetPosition(inkCanvas));
+                if (handled)
+                {
+                    sv.ForceRedraw();
+                }
+                else
+                {
+                    _isMouseRealtimeInking = false;
+                    MouseTouchMove(e.GetPosition(inkCanvas));
+                }
+            }
+            else if (isMouseDown)
+            {
+                MouseTouchMove(e.GetPosition(inkCanvas));
+            }
 
             if (Settings.Canvas.IsShowCursor)
             {
@@ -2560,6 +2589,39 @@ namespace Ink_Canvas
         /// </remarks>
         private void inkCanvas_MouseUp(object sender, MouseButtonEventArgs e)
         {
+            if (_isMouseRealtimeInking)
+            {
+                try
+                {
+                    var sv = GetStrokeVisual(MouseRealtimeStrokeId);
+                    sv?.ForceRedraw();
+                    var stroke = sv?.Stroke;
+                    if (stroke != null)
+                    {
+                        if (stroke.DrawingAttributes != null) stroke.DrawingAttributes.IgnorePressure = false;
+                        if (!stroke.ContainsPropertyData(RealtimeVelocityBrushTipAppliedGuid))
+                            stroke.AddPropertyData(RealtimeVelocityBrushTipAppliedGuid, true);
+                        inkCanvas.Strokes.Add(stroke);
+                        inkCanvas_StrokeCollected(inkCanvas, new InkCanvasStrokeCollectedEventArgs(stroke));
+                    }
+
+                    if (VisualCanvasList.TryGetValue(MouseRealtimeStrokeId, out var visualCanvas) && inkCanvas.Children.Contains(visualCanvas))
+                        inkCanvas.Children.Remove(visualCanvas);
+                    StrokeVisualList.Remove(MouseRealtimeStrokeId);
+                    VisualCanvasList.Remove(MouseRealtimeStrokeId);
+                    TouchDownPointsList.Remove(MouseRealtimeStrokeId);
+                    CleanupRealtimeBrushTipState(MouseRealtimeStrokeId);
+                }
+                catch (Exception ex)
+                {
+                    System.Diagnostics.Debug.WriteLine(ex);
+                }
+                finally
+                {
+                    _isMouseRealtimeInking = false;
+                }
+            }
+
             HandleEraserOperationEnded();
             inkCanvas.ReleaseMouseCapture();
             ViewboxFloatingBar.IsHitTestVisible = true;