fix:issue #170

Ink Canvas/MainWindow_cs/MW_ClipboardHandler.cs

@@ -205,6 +205,11 @@ namespace Ink_Canvas
                 // 提交到历史记录
                 timeMachine.CommitElementInsertHistory(image);
 
+                // 插入图片后切换到选择模式并刷新浮动栏高光显示
+                SetCurrentToolMode(InkCanvasEditingMode.Select);
+                UpdateCurrentToolMode("select");
+                HideSubPanels("select");
+
                 ShowNotification("图片已从剪贴板粘贴");
             }
             catch (Exception ex)

Ink Canvas/MainWindow_cs/MW_ElementsControls.cs

@@ -68,6 +68,11 @@ namespace Ink_Canvas
                     };
 
                     timeMachine.CommitElementInsertHistory(image);
+
+                    // 插入图片后切换到选择模式并刷新浮动栏高光显示
+                    SetCurrentToolMode(InkCanvasEditingMode.Select);
+                    UpdateCurrentToolMode("select");
+                    HideSubPanels("select");
                 }
             }
         }

Ink Canvas/MainWindow_cs/MW_FloatingBarIcons.cs

@@ -1851,6 +1851,13 @@ namespace Ink_Canvas
                 ((Panel)lastBorderMouseDownObject).Background = new SolidColorBrush(Colors.Transparent);
             if (sender == Pen_Icon && lastBorderMouseDownObject != Pen_Icon) return;
 
+            // 如果当前有选中的图片元素，先取消选中
+            if (currentSelectedElement != null)
+            {
+                UnselectElement(currentSelectedElement);
+                currentSelectedElement = null;
+            }
+
             // 禁用高级橡皮擦系统
             DisableAdvancedEraserSystem();
 
@@ -3099,6 +3106,11 @@ namespace Ink_Canvas
                     }
 
                     timeMachine.CommitElementInsertHistory(image);
+
+                    // 插入图片后切换到选择模式并刷新浮动栏高光显示
+                    SetCurrentToolMode(InkCanvasEditingMode.Select);
+                    UpdateCurrentToolMode("select");
+                    HideSubPanels("select");
                 }
             }
         }
@@ -3165,6 +3177,11 @@ namespace Ink_Canvas
                     }
 
                     timeMachine.CommitElementInsertHistory(image);
+
+                    // 插入图片后切换到选择模式并刷新浮动栏高光显示
+                    SetCurrentToolMode(InkCanvasEditingMode.Select);
+                    UpdateCurrentToolMode("select");
+                    HideSubPanels("select");
                 }
             }
         }
@@ -3231,6 +3248,11 @@ namespace Ink_Canvas
                     }
 
                     timeMachine.CommitElementInsertHistory(image);
+
+                    // 插入图片后切换到选择模式并刷新浮动栏高光显示
+                    SetCurrentToolMode(InkCanvasEditingMode.Select);
+                    UpdateCurrentToolMode("select");
+                    HideSubPanels("select");
                 }
             }
         }

Ink Canvas/MainWindow_cs/MW_ImageInsert.cs

@@ -216,6 +216,11 @@ namespace Ink_Canvas
                 // 提交历史记录
                 timeMachine.CommitElementInsertHistory(image);
 
+                // 插入图片后切换到选择模式并刷新浮动栏高光显示
+                SetCurrentToolMode(InkCanvasEditingMode.Select);
+                UpdateCurrentToolMode("select");
+                HideSubPanels("select");
+
                 ShowNotification("截图已插入到画布");
             }
             catch (Exception ex)

Ink Canvas/MainWindow_cs/MW_SelectionGestures.cs

@@ -336,7 +336,7 @@ namespace Ink_Canvas
         {
             var borderLeft = (inkCanvas.GetSelectionBounds().Left + inkCanvas.GetSelectionBounds().Right -
                               BorderStrokeSelectionControlWidth) / 2;
-            var borderTop = inkCanvas.GetSelectionBounds().Bottom + 1;
+            var borderTop = inkCanvas.GetSelectionBounds().Bottom + 10; // 在墨迹下方10像素处显示
             if (borderLeft < 0) borderLeft = 0;
             if (borderTop < 0) borderTop = 0;
             if (Width - borderLeft < BorderStrokeSelectionControlWidth || double.IsNaN(borderLeft))
@@ -344,7 +344,14 @@ namespace Ink_Canvas
             if (Height - borderTop < BorderStrokeSelectionControlHeight || double.IsNaN(borderTop))
                 borderTop = Height - BorderStrokeSelectionControlHeight;
 
-            if (borderTop > 60) borderTop -= 60;
+            // 确保墨迹选中栏始终显示在墨迹下方
+            // 如果选中栏会超出屏幕底部，则显示在墨迹上方
+            if (borderTop + BorderStrokeSelectionControlHeight > Height)
+            {
+                borderTop = inkCanvas.GetSelectionBounds().Top - BorderStrokeSelectionControlHeight - 10;
+                if (borderTop < 0) borderTop = 10; // 如果上方也没有空间，则显示在顶部
+            }
+
             BorderStrokeSelectionControl.Margin = new Thickness(borderLeft, borderTop, 0, 0);
         }
 

Ink Canvas/MainWindow_cs/MW_ShapeDrawing.cs

@@ -118,6 +118,13 @@ namespace Ink_Canvas
 
         private void BtnPen_Click(object sender, RoutedEventArgs e)
         {
+            // 如果当前有选中的图片元素，先取消选中
+            if (currentSelectedElement != null)
+            {
+                UnselectElement(currentSelectedElement);
+                currentSelectedElement = null;
+            }
+
             // 禁用高级橡皮擦系统
             DisableAdvancedEraserSystem();