fix:issue #213

Ink Canvas/MainWindow_cs/MW_ClipboardHandler.cs

@@ -192,6 +192,8 @@ namespace Ink_Canvas
                             elementForEvents.MouseWheel += Element_MouseWheel;
 
                             // 触摸事件
+                            elementForEvents.TouchDown += Element_TouchDown;
+                            elementForEvents.TouchUp += Element_TouchUp;
                             elementForEvents.IsManipulationEnabled = true;
                             elementForEvents.ManipulationDelta += Element_ManipulationDelta;
                             elementForEvents.ManipulationCompleted += Element_ManipulationCompleted;

Ink Canvas/MainWindow_cs/MW_ElementsControls.cs

@@ -152,6 +152,19 @@ namespace Ink_Canvas
             }
         }
 
+        // 触摸释放事件
+        private void Element_TouchUp(object sender, TouchEventArgs e)
+        {
+            if (sender is FrameworkElement element)
+            {
+                isDragging = false;
+                element.ReleaseTouchCapture(e.TouchDevice);
+                element.Cursor = Cursors.Hand;
+
+                e.Handled = true;
+            }
+        }
+
         // 鼠标移动事件
         private void Element_MouseMove(object sender, MouseEventArgs e)
         {
@@ -205,6 +218,34 @@ namespace Ink_Canvas
             }
         }
 
+        // 触摸按下事件
+        private void Element_TouchDown(object sender, TouchEventArgs e)
+        {
+            if (sender is FrameworkElement element)
+            {
+                // 取消之前选中的元素
+                if (currentSelectedElement != null && currentSelectedElement != element)
+                {
+                    // 保存当前编辑模式
+                    var previousEditingMode = inkCanvas.EditingMode;
+                    UnselectElement(currentSelectedElement);
+                    // 恢复编辑模式
+                    inkCanvas.EditingMode = previousEditingMode;
+                }
+
+                // 选中当前元素
+                SelectElement(element);
+
+                // 开始拖动
+                isDragging = true;
+                dragStartPoint = e.GetTouchPoint(inkCanvas).Position;
+                element.CaptureTouch(e.TouchDevice);
+                element.Cursor = Cursors.SizeAll;
+
+                e.Handled = true;
+            }
+        }
+
         // 触摸操作事件
         private void Element_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
         {

Ink Canvas/MainWindow_cs/MW_FloatingBarIcons.cs

@@ -3316,6 +3316,8 @@ namespace Ink_Canvas
                         elementForEvents.MouseWheel += Element_MouseWheel;
 
                         // 触摸事件
+                        elementForEvents.TouchDown += Element_TouchDown;
+                        elementForEvents.TouchUp += Element_TouchUp;
                         elementForEvents.IsManipulationEnabled = true;
                         elementForEvents.ManipulationDelta += Element_ManipulationDelta;
                         elementForEvents.ManipulationCompleted += Element_ManipulationCompleted;
@@ -3387,6 +3389,8 @@ namespace Ink_Canvas
                         elementForEvents.MouseWheel += Element_MouseWheel;
 
                         // 触摸事件
+                        elementForEvents.TouchDown += Element_TouchDown;
+                        elementForEvents.TouchUp += Element_TouchUp;
                         elementForEvents.IsManipulationEnabled = true;
                         elementForEvents.ManipulationDelta += Element_ManipulationDelta;
                         elementForEvents.ManipulationCompleted += Element_ManipulationCompleted;
@@ -3458,6 +3462,8 @@ namespace Ink_Canvas
                         elementForEvents.MouseWheel += Element_MouseWheel;
 
                         // 触摸事件
+                        elementForEvents.TouchDown += Element_TouchDown;
+                        elementForEvents.TouchUp += Element_TouchUp;
                         elementForEvents.IsManipulationEnabled = true;
                         elementForEvents.ManipulationDelta += Element_ManipulationDelta;
                         elementForEvents.ManipulationCompleted += Element_ManipulationCompleted;

Ink Canvas/MainWindow_cs/MW_ImageInsert.cs

@@ -404,6 +404,8 @@ namespace Ink_Canvas
             image.MouseWheel += Element_MouseWheel;
 
             // 触摸事件
+            image.TouchDown += Element_TouchDown;
+            image.TouchUp += Element_TouchUp;
             image.IsManipulationEnabled = true;
             image.ManipulationDelta += Element_ManipulationDelta;
             image.ManipulationCompleted += Element_ManipulationCompleted;