improve:截图

Ink Canvas/Windows/ScreenshotSelectorWindow.xaml

@@ -18,12 +18,14 @@
         <!-- 半透明遮罩 -->
         <Rectangle Name="OverlayRectangle"
                    Fill="Black"
-                   Opacity="0.3" />
+                   Opacity="0.3"
+                   IsHitTestVisible="False" />
 
         <!-- 透明选择区域遮罩 - 使用正确的几何体操作 -->
         <Rectangle Name="TransparentSelectionMask"
                    Fill="Black"
                    Opacity="0.3"
+                   IsHitTestVisible="False"
                    Visibility="Collapsed">
             <Rectangle.Clip>
                 <CombinedGeometry GeometryCombineMode="Exclude">
@@ -43,8 +45,14 @@
             <Rectangle Name="SelectionRectangle"
                        Stroke="White"
                        StrokeThickness="1"
-                       Fill="Transparent"
+                       Fill="#01FFFFFF"
-                       Visibility="Collapsed" />
+                       Visibility="Collapsed"
+                       IsHitTestVisible="True"
+                       Panel.ZIndex="1001"
+                       MouseLeftButtonDown="SelectionRectangle_MouseLeftButtonDown"
+                       MouseLeftButtonUp="SelectionRectangle_MouseLeftButtonUp"
+                       MouseMove="SelectionRectangle_MouseMove"
+                       Cursor="SizeAll" />
 
             <!-- 任意形状选择模式 -->
             <Path Name="SelectionPath"

Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs

@@ -191,7 +191,8 @@ namespace Ink_Canvas
                 hitElement is Separator ||
                 hitElement.Name == "SizeInfoBorder" ||
                 hitElement.Name == "HintText" ||
-                hitElement.Name == "AdjustModeHint"))
+                hitElement.Name == "AdjustModeHint" ||
+                hitElement.Name == "SelectionRectangle"))
             {
                 return;
             }
@@ -243,6 +244,12 @@ namespace Ink_Canvas
 
         private void Window_MouseMove(object sender, MouseEventArgs e)
         {
+            // 如果正在调整模式且正在移动，不处理窗口级别的鼠标移动
+            if (_isAdjusting && _isMoving)
+            {
+                return;
+            }
+
             if (_isSelecting)
             {
                 _currentPoint = e.GetPosition(this);
@@ -266,6 +273,12 @@ namespace Ink_Canvas
 
         private void Window_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
         {
+            // 如果正在调整模式且正在移动，不处理窗口级别的鼠标释放
+            if (_isAdjusting && _isMoving)
+            {
+                return;
+            }
+
             if (_isSelecting)
             {
                 _isSelecting = false;
@@ -456,6 +469,8 @@ namespace Ink_Canvas
 
         private void ShowControlPoints()
         {
+            // 确保选择矩形在调整模式下可见
+            SelectionRectangle.Visibility = Visibility.Visible;
             ControlPointsCanvas.Visibility = Visibility.Visible;
             UpdateControlPointsPosition();
         }
@@ -694,6 +709,75 @@ namespace Ink_Canvas
             return Math.Sqrt(dx * dx + dy * dy);
         }
 
+        private void SelectionRectangle_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+        {
+            // 添加调试信息
+            System.Diagnostics.Debug.WriteLine($"SelectionRectangle_MouseLeftButtonDown: _isAdjusting={_isAdjusting}");
+            
+            if (!_isAdjusting) return;
+
+            _isMoving = true;
+            _activeControlPoint = ControlPointType.Move;
+            _lastMousePosition = e.GetPosition(this);
+            
+            // 捕获鼠标到选择矩形
+            SelectionRectangle.CaptureMouse();
+            e.Handled = true;
+            
+            System.Diagnostics.Debug.WriteLine("SelectionRectangle mouse capture started");
+        }
+
+        private void SelectionRectangle_MouseMove(object sender, MouseEventArgs e)
+        {
+            if (!_isAdjusting || !_isMoving || _activeControlPoint != ControlPointType.Move) return;
+
+            try
+            {
+                var currentPosition = e.GetPosition(this);
+                var delta = currentPosition - _lastMousePosition;
+
+                // 移动整个选择区域
+                var newRect = _currentSelection;
+                newRect.X += delta.X;
+                newRect.Y += delta.Y;
+
+                // 确保选择区域不会移出屏幕边界
+                var screenBounds = new Rect(0, 0, ActualWidth, ActualHeight);
+                if (newRect.Left < 0) newRect.X = 0;
+                if (newRect.Top < 0) newRect.Y = 0;
+                if (newRect.Right > screenBounds.Right) newRect.X = screenBounds.Right - newRect.Width;
+                if (newRect.Bottom > screenBounds.Bottom) newRect.Y = screenBounds.Bottom - newRect.Height;
+
+                _currentSelection = newRect;
+                UpdateSelectionDisplay();
+
+                _lastMousePosition = currentPosition;
+                e.Handled = true;
+                
+                // 添加调试信息
+                System.Diagnostics.Debug.WriteLine($"SelectionRectangle moving: delta=({delta.X}, {delta.Y}), newRect=({newRect.X}, {newRect.Y}, {newRect.Width}, {newRect.Height})");
+            }
+            catch (Exception ex)
+            {
+                // 如果出现异常，停止移动
+                System.Diagnostics.Debug.WriteLine($"SelectionRectangle move error: {ex.Message}");
+                _isMoving = false;
+                _activeControlPoint = ControlPointType.None;
+                SelectionRectangle.ReleaseMouseCapture();
+            }
+        }
+
+        private void SelectionRectangle_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
+        {
+            if (_isMoving && _activeControlPoint == ControlPointType.Move)
+            {
+                _isMoving = false;
+                _activeControlPoint = ControlPointType.None;
+                SelectionRectangle.ReleaseMouseCapture();
+                e.Handled = true;
+            }
+        }
+
         private void ResetSelectionState()
         {
             // 重置所有选择相关的状态
@@ -724,6 +808,12 @@ namespace Ink_Canvas
                 ReleaseMouseCapture();
             }
             
+            // 释放选择矩形的鼠标捕获
+            if (SelectionRectangle.IsMouseCaptured)
+            {
+                SelectionRectangle.ReleaseMouseCapture();
+            }
+            
             // 重置选择区域
             _currentSelection = new Rect();
             SelectedArea = null;