修复温差图绘制时线条中断问题，在普通绘制模式下应用正确的缩放比例计算

Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs

@@ -1688,7 +1688,23 @@ namespace JoyD.Windows.CS
                         else
                         {                             
                             // 普通绘制模式
-                            using (Pen pen = new Pen(selectedColor, _currentBrushSize))
+                            // 计算考虑图像缩放比例的画笔大小
+                            int adjustedBrushSize = _currentBrushSize;
+                            if (picBoxTemp.Image != null)
+                            {
+                                // 计算控件到图像的缩放比例（图像实际大小与控件显示大小的比例）
+                                float scaleX = (float)picBoxTemp.Image.Width / picBoxTemp.ClientSize.Width;
+                                float scaleY = (float)picBoxTemp.Image.Height / picBoxTemp.ClientSize.Height;
+                                
+                                // 使用缩放比例调整画笔大小，使绘制区域在视觉上与光标块一致
+                                adjustedBrushSize = (int)(_currentBrushSize * Math.Min(scaleX, scaleY));
+                                
+                                // 确保调整后的画笔大小不会太小或太大
+                                adjustedBrushSize = Math.Max(adjustedBrushSize, 1); // 最小1像素
+                                adjustedBrushSize = Math.Min(adjustedBrushSize, 50); // 最大50像素
+                            }
+                            
+                            using (Pen pen = new Pen(selectedColor, adjustedBrushSize))
                             {                                 
                                 pen.StartCap = LineCap.Round;
                                 pen.EndCap = LineCap.Round;
@@ -1699,12 +1715,12 @@ namespace JoyD.Windows.CS
                                 {                                     
                                     _lastDrawPoint = imagePoint;
                                     // 绘制起始点的圆形
-                                    int radius = _currentBrushSize / 2;
+                                    int radius = adjustedBrushSize / 2;
                                     g.FillEllipse(new SolidBrush(selectedColor), 
                                         imagePoint.X - radius, 
                                         imagePoint.Y - radius, 
-                                        _currentBrushSize, 
+                                        adjustedBrushSize, 
-                                        _currentBrushSize);
+                                        adjustedBrushSize);
                                 }
                                 else
                                 {