642 lines
26 KiB
C#
642 lines
26 KiB
C#
using Ink_Canvas.Helpers;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Ink;
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using System.Windows.Input;
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using System.Windows.Media;
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using Point = System.Windows.Point;
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namespace Ink_Canvas
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{
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public partial class MainWindow : Window
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{
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#region Multi-Touch
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private bool isInMultiTouchMode;
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private List<int> dec = new List<int>();
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private bool isSingleFingerDragMode;
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private Point centerPoint = new Point(0, 0);
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private InkCanvasEditingMode lastInkCanvasEditingMode = InkCanvasEditingMode.Ink;
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/// <summary>
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/// 保存画布上的非笔画元素（如图片、媒体元素等）
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/// </summary>
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private List<UIElement> PreserveNonStrokeElements()
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{
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var preservedElements = new List<UIElement>();
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// 遍历inkCanvas的所有子元素
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for (int i = inkCanvas.Children.Count - 1; i >= 0; i--)
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{
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var child = inkCanvas.Children[i];
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// 保存图片、媒体元素等非笔画相关的UI元素
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if (child is Image || child is MediaElement ||
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(child is Border border && border.Name != "AdvancedEraserOverlay"))
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{
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preservedElements.Add(child);
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}
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}
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return preservedElements;
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}
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/// <summary>
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/// 恢复之前保存的非笔画元素到画布
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/// </summary>
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private void RestoreNonStrokeElements(List<UIElement> preservedElements)
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{
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if (preservedElements == null) return;
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foreach (var element in preservedElements)
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{
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// 确保元素没有父容器再添加到inkCanvas
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if (element is FrameworkElement fe && fe.Parent == null)
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{
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inkCanvas.Children.Add(element);
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}
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}
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}
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private void BorderMultiTouchMode_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (isInMultiTouchMode)
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{
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inkCanvas.StylusDown -= MainWindow_StylusDown;
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inkCanvas.StylusMove -= MainWindow_StylusMove;
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inkCanvas.StylusUp -= MainWindow_StylusUp;
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inkCanvas.TouchDown -= MainWindow_TouchDown;
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inkCanvas.TouchDown += Main_Grid_TouchDown;
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if (inkCanvas.EditingMode != InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
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}
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// 保存非笔画元素（如图片）
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var preservedElements = PreserveNonStrokeElements();
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inkCanvas.Children.Clear();
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// 恢复非笔画元素
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RestoreNonStrokeElements(preservedElements);
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isInMultiTouchMode = false;
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}
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else
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{
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inkCanvas.StylusDown += MainWindow_StylusDown;
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inkCanvas.StylusMove += MainWindow_StylusMove;
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inkCanvas.StylusUp += MainWindow_StylusUp;
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inkCanvas.TouchDown += MainWindow_TouchDown;
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inkCanvas.TouchDown -= Main_Grid_TouchDown;
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if (inkCanvas.EditingMode != InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.EditingMode = InkCanvasEditingMode.None;
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}
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// 保存非笔画元素（如图片）
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var preservedElements = PreserveNonStrokeElements();
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inkCanvas.Children.Clear();
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// 恢复非笔画元素
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RestoreNonStrokeElements(preservedElements);
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isInMultiTouchMode = true;
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}
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}
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private void MainWindow_TouchDown(object sender, TouchEventArgs e)
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{
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint
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|| inkCanvas.EditingMode == InkCanvasEditingMode.EraseByStroke
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|| inkCanvas.EditingMode == InkCanvasEditingMode.Select) return;
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if (!isHidingSubPanelsWhenInking)
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{
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isHidingSubPanelsWhenInking = true;
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HideSubPanels(); // 书写时自动隐藏二级菜单
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}
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// 只保留普通橡皮逻辑
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TouchDownPointsList[e.TouchDevice.Id] = InkCanvasEditingMode.None;
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inkCanvas.EraserShape = new EllipseStylusShape(50, 50);
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if (inkCanvas.EditingMode != InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.EditingMode = InkCanvasEditingMode.None;
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}
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}
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private void MainWindow_StylusDown(object sender, StylusDownEventArgs e)
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{
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SetCursorBasedOnEditingMode(inkCanvas);
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inkCanvas.CaptureStylus();
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ViewboxFloatingBar.IsHitTestVisible = false;
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BlackboardUIGridForInkReplay.IsHitTestVisible = false;
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// 确保手写笔模式下显示光标
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if (Settings.Canvas.IsShowCursor)
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{
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inkCanvas.ForceCursor = true;
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inkCanvas.UseCustomCursor = true;
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// 根据当前编辑模式设置不同的光标
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.Cursor = Cursors.Cross;
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}
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else if (inkCanvas.EditingMode == InkCanvasEditingMode.Ink)
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{
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var sri = Application.GetResourceStream(new Uri("Resources/Cursors/Pen.cur", UriKind.Relative));
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if (sri != null)
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inkCanvas.Cursor = new Cursor(sri.Stream);
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}
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// 强制显示光标
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System.Windows.Forms.Cursor.Show();
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}
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint
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|| inkCanvas.EditingMode == InkCanvasEditingMode.EraseByStroke
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|| inkCanvas.EditingMode == InkCanvasEditingMode.Select) return;
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TouchDownPointsList[e.StylusDevice.Id] = InkCanvasEditingMode.None;
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}
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private async void MainWindow_StylusUp(object sender, StylusEventArgs e)
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{
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try
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{
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inkCanvas.Strokes.Add(GetStrokeVisual(e.StylusDevice.Id).Stroke);
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await Task.Delay(5); // 避免渲染墨迹完成前预览墨迹被删除导致墨迹闪烁
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inkCanvas.Children.Remove(GetVisualCanvas(e.StylusDevice.Id));
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inkCanvas_StrokeCollected(inkCanvas,
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new InkCanvasStrokeCollectedEventArgs(GetStrokeVisual(e.StylusDevice.Id).Stroke));
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}
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catch (Exception ex)
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{
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Label.Content = ex.ToString();
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}
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try
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{
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StrokeVisualList.Remove(e.StylusDevice.Id);
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VisualCanvasList.Remove(e.StylusDevice.Id);
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TouchDownPointsList.Remove(e.StylusDevice.Id);
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if (StrokeVisualList.Count == 0 || VisualCanvasList.Count == 0 || TouchDownPointsList.Count == 0)
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{
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// 只清除手写笔预览相关的Canvas，不清除所有子元素
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foreach (var canvas in VisualCanvasList.Values.ToList())
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{
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if (inkCanvas.Children.Contains(canvas))
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{
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inkCanvas.Children.Remove(canvas);
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}
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}
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StrokeVisualList.Clear();
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VisualCanvasList.Clear();
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TouchDownPointsList.Clear();
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}
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}
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catch { }
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inkCanvas.ReleaseStylusCapture();
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ViewboxFloatingBar.IsHitTestVisible = true;
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BlackboardUIGridForInkReplay.IsHitTestVisible = true;
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}
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private void MainWindow_StylusMove(object sender, StylusEventArgs e)
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{
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try
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{
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if (GetTouchDownPointsList(e.StylusDevice.Id) != InkCanvasEditingMode.None) return;
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try
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{
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if (e.StylusDevice.StylusButtons[1].StylusButtonState == StylusButtonState.Down) return;
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}
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catch { }
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// 确保手写笔移动时光标保持可见
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if (Settings.Canvas.IsShowCursor)
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{
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inkCanvas.ForceCursor = true;
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inkCanvas.UseCustomCursor = true;
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System.Windows.Forms.Cursor.Show();
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}
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var strokeVisual = GetStrokeVisual(e.StylusDevice.Id);
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var stylusPointCollection = e.GetStylusPoints(this);
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foreach (var stylusPoint in stylusPointCollection)
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strokeVisual.Add(new StylusPoint(stylusPoint.X, stylusPoint.Y, stylusPoint.PressureFactor));
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strokeVisual.Redraw();
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}
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catch { }
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}
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private StrokeVisual GetStrokeVisual(int id)
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{
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if (StrokeVisualList.TryGetValue(id, out var visual)) return visual;
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var strokeVisual = new StrokeVisual(inkCanvas.DefaultDrawingAttributes.Clone());
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StrokeVisualList[id] = strokeVisual;
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StrokeVisualList[id] = strokeVisual;
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var visualCanvas = new VisualCanvas(strokeVisual);
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VisualCanvasList[id] = visualCanvas;
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inkCanvas.Children.Add(visualCanvas);
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return strokeVisual;
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}
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private VisualCanvas GetVisualCanvas(int id)
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{
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return VisualCanvasList.TryGetValue(id, out var visualCanvas) ? visualCanvas : null;
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}
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private InkCanvasEditingMode GetTouchDownPointsList(int id)
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{
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return TouchDownPointsList.TryGetValue(id, out var inkCanvasEditingMode) ? inkCanvasEditingMode : inkCanvas.EditingMode;
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}
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private Dictionary<int, InkCanvasEditingMode> TouchDownPointsList { get; } =
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new Dictionary<int, InkCanvasEditingMode>();
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private Dictionary<int, StrokeVisual> StrokeVisualList { get; } = new Dictionary<int, StrokeVisual>();
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private Dictionary<int, VisualCanvas> VisualCanvasList { get; } = new Dictionary<int, VisualCanvas>();
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#endregion
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private int lastTouchDownTime = 0, lastTouchUpTime = 0;
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private Point iniP = new Point(0, 0);
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private void Main_Grid_TouchDown(object sender, TouchEventArgs e)
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{
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SetCursorBasedOnEditingMode(inkCanvas);
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inkCanvas.CaptureTouch(e.TouchDevice);
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint)
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{
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// 橡皮状态下只return，保证橡皮状态可保持
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return;
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}
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if (inkCanvas.EditingMode == InkCanvasEditingMode.Select)
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{
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// 套索选状态下只return，保证套索选可用
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return;
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}
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if (drawingShapeMode == 9)
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{
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if (isFirstTouchCuboid)
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{
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CuboidFrontRectIniP = e.GetTouchPoint(inkCanvas).Position;
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}
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// 允许MouseTouchMove在TouchMove时处理
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return;
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}
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if (drawingShapeMode != 0)
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{
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return;
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}
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if (inkCanvas.EditingMode == InkCanvasEditingMode.Ink)
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{
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return;
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}
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if (inkCanvas.EditingMode != InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
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}
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}
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// 手掌擦相关变量
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private bool isPalmEraserActive;
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private InkCanvasEditingMode palmEraserLastEditingMode = InkCanvasEditingMode.Ink;
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private bool palmEraserLastIsHighlighter;
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private bool palmEraserWasEnabledBeforeMultiTouch;
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private void inkCanvas_PreviewTouchDown(object sender, TouchEventArgs e)
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{
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// 橡皮状态下不做任何切换，直接return，保证橡皮可持续
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint)
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{
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return;
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}
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// 修复：几何绘制模式下禁止自动收集墨迹
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if (drawingShapeMode != 0)
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{
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inkCanvas.EditingMode = InkCanvasEditingMode.None;
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}
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SetCursorBasedOnEditingMode(inkCanvas);
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inkCanvas.CaptureTouch(e.TouchDevice);
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ViewboxFloatingBar.IsHitTestVisible = false;
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BlackboardUIGridForInkReplay.IsHitTestVisible = false;
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dec.Add(e.TouchDevice.Id);
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// Palm Eraser 逻辑
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if (Settings.Canvas.EnablePalmEraser && dec.Count >= 2 && !isPalmEraserActive)
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{
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var bounds = e.GetTouchPoint(inkCanvas).Bounds;
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double palmThreshold = 40; // 触摸面积阈值，可根据实际调整
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if (bounds.Width >= palmThreshold || bounds.Height >= palmThreshold)
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{
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// 记录当前编辑模式和高光状态
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palmEraserLastEditingMode = inkCanvas.EditingMode;
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palmEraserLastIsHighlighter = drawingAttributes.IsHighlighter;
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// 切换为橡皮擦
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EraserIcon_Click(null, null);
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isPalmEraserActive = true;
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}
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}
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//设备1个的时候，记录中心点
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if (dec.Count == 1)
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{
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var touchPoint = e.GetTouchPoint(inkCanvas);
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centerPoint = touchPoint.Position;
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// 新增：几何绘制模式下，记录初始点
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if (drawingShapeMode != 0)
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{
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iniP = touchPoint.Position;
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}
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//记录第一根手指点击时的 StrokeCollection
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lastTouchDownStrokeCollection = inkCanvas.Strokes.Clone();
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}
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//设备两个及两个以上，将画笔功能关闭
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if (dec.Count > 1 || isSingleFingerDragMode || !Settings.Gesture.IsEnableTwoFingerGesture)
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{
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if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerGesture) return;
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if (inkCanvas.EditingMode == InkCanvasEditingMode.None ||
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inkCanvas.EditingMode == InkCanvasEditingMode.Select) return;
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lastInkCanvasEditingMode = inkCanvas.EditingMode;
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if (inkCanvas.EditingMode != InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.EditingMode = InkCanvasEditingMode.None;
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}
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}
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}
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private void inkCanvas_PreviewTouchUp(object sender, TouchEventArgs e)
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{
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// 橡皮状态下不做任何切换，直接return，保证橡皮可持续
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint && !isPalmEraserActive)
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{
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return;
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}
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inkCanvas.ReleaseAllTouchCaptures();
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ViewboxFloatingBar.IsHitTestVisible = true;
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BlackboardUIGridForInkReplay.IsHitTestVisible = true;
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// Palm Eraser 逻辑：所有点抬起后恢复原编辑模式
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dec.Remove(e.TouchDevice.Id);
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if (isPalmEraserActive && dec.Count == 0)
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{
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// 恢复高光状态
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drawingAttributes.IsHighlighter = palmEraserLastIsHighlighter;
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// 恢复编辑模式
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint)
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{
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if (palmEraserLastEditingMode == InkCanvasEditingMode.Ink)
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{
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PenIcon_Click(null, null);
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}
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else if (palmEraserLastEditingMode == InkCanvasEditingMode.Select)
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{
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SymbolIconSelect_MouseUp(null, null);
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}
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else
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{
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inkCanvas.EditingMode = palmEraserLastEditingMode;
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}
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}
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isPalmEraserActive = false;
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}
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// 新增：几何绘制模式下，触摸抬手时自动落笔
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if (drawingShapeMode != 0)
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{
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var mouseArgs = new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
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{
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RoutedEvent = MouseLeftButtonUpEvent,
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Source = inkCanvas
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};
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inkCanvas_MouseUp(inkCanvas, mouseArgs);
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}
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//手势完成后切回之前的状态
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// 修复：改进多指手势恢复逻辑，确保从橡皮擦切换到笔时多指手势能正确恢复
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if (dec.Count > 1)
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{
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if (inkCanvas.EditingMode == InkCanvasEditingMode.None)
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{
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if (lastInkCanvasEditingMode != InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.EditingMode = lastInkCanvasEditingMode;
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}
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}
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}
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else if (dec.Count == 0)
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{
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// 当所有触摸点都抬起时，确保正确恢复编辑模式
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// 这对于从橡皮擦切换到笔后恢复多指手势功能很重要
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if (inkCanvas.EditingMode == InkCanvasEditingMode.None &&
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lastInkCanvasEditingMode != InkCanvasEditingMode.None &&
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lastInkCanvasEditingMode != InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.EditingMode = lastInkCanvasEditingMode;
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}
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}
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inkCanvas.Opacity = 1;
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if (dec.Count == 0)
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if (lastTouchDownStrokeCollection.Count() != inkCanvas.Strokes.Count() &&
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!(drawingShapeMode == 9 && !isFirstTouchCuboid))
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{
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var whiteboardIndex = CurrentWhiteboardIndex;
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if (currentMode == 0) whiteboardIndex = 0;
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strokeCollections[whiteboardIndex] = lastTouchDownStrokeCollection;
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}
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}
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private void inkCanvas_ManipulationStarting(object sender, ManipulationStartingEventArgs e)
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{
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e.Mode = ManipulationModes.All;
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}
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private void inkCanvas_ManipulationInertiaStarting(object sender, ManipulationInertiaStartingEventArgs e) { }
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private void Main_Grid_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
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{
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if (e.Manipulators.Count() != 0) return;
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if (drawingShapeMode == 0 && inkCanvas.EditingMode != InkCanvasEditingMode.EraseByPoint)
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{
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inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
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// 修复：确保多指手势完成后正确更新lastInkCanvasEditingMode
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lastInkCanvasEditingMode = InkCanvasEditingMode.Ink;
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}
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}
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private void Main_Grid_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
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{
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// 手掌擦时禁止移动/缩放
|
|
if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint)
|
|
return;
|
|
// 三指及以上禁止缩放
|
|
bool disableScale = dec.Count >= 3;
|
|
if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerGesture) return;
|
|
if ((dec.Count >= 2 && (Settings.PowerPointSettings.IsEnableTwoFingerGestureInPresentationMode ||
|
|
StackPanelPPTControls.Visibility != Visibility.Visible ||
|
|
StackPanelPPTButtons.Visibility == Visibility.Collapsed)) ||
|
|
isSingleFingerDragMode)
|
|
{
|
|
var md = e.DeltaManipulation;
|
|
var trans = md.Translation; // 获得位移矢量
|
|
|
|
var m = new Matrix();
|
|
|
|
if (Settings.Gesture.IsEnableTwoFingerTranslate)
|
|
m.Translate(trans.X, trans.Y); // 移动
|
|
|
|
if (Settings.Gesture.IsEnableTwoFingerGestureTranslateOrRotation)
|
|
{
|
|
var rotate = md.Rotation; // 获得旋转角度
|
|
var scale = md.Scale; // 获得缩放倍数
|
|
|
|
// Find center of element and then transform to get current location of center
|
|
var fe = e.Source as FrameworkElement;
|
|
var center = new Point(fe.ActualWidth / 2, fe.ActualHeight / 2);
|
|
center = m.Transform(center); // 转换为矩阵缩放和旋转的中心点
|
|
|
|
if (Settings.Gesture.IsEnableTwoFingerRotation)
|
|
m.RotateAt(rotate, center.X, center.Y); // 旋转
|
|
if (Settings.Gesture.IsEnableTwoFingerZoom && !disableScale)
|
|
m.ScaleAt(scale.X, scale.Y, center.X, center.Y); // 缩放
|
|
}
|
|
|
|
var strokes = inkCanvas.GetSelectedStrokes();
|
|
if (strokes.Count != 0)
|
|
{
|
|
foreach (var stroke in strokes)
|
|
{
|
|
stroke.Transform(m, false);
|
|
|
|
foreach (var circle in circles)
|
|
if (stroke == circle.Stroke)
|
|
{
|
|
circle.R = GetDistance(circle.Stroke.StylusPoints[0].ToPoint(),
|
|
circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].ToPoint()) / 2;
|
|
circle.Centroid = new Point(
|
|
(circle.Stroke.StylusPoints[0].X +
|
|
circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].X) / 2,
|
|
(circle.Stroke.StylusPoints[0].Y +
|
|
circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].Y) / 2);
|
|
break;
|
|
}
|
|
|
|
if (!Settings.Gesture.IsEnableTwoFingerZoom) continue;
|
|
try
|
|
{
|
|
stroke.DrawingAttributes.Width *= md.Scale.X;
|
|
stroke.DrawingAttributes.Height *= md.Scale.Y;
|
|
}
|
|
catch { }
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (Settings.Gesture.IsEnableTwoFingerZoom)
|
|
{
|
|
foreach (var stroke in inkCanvas.Strokes)
|
|
{
|
|
stroke.Transform(m, false);
|
|
try
|
|
{
|
|
stroke.DrawingAttributes.Width *= md.Scale.X;
|
|
stroke.DrawingAttributes.Height *= md.Scale.Y;
|
|
}
|
|
catch { }
|
|
}
|
|
|
|
;
|
|
}
|
|
else
|
|
{
|
|
foreach (var stroke in inkCanvas.Strokes) stroke.Transform(m, false);
|
|
;
|
|
}
|
|
|
|
foreach (var circle in circles)
|
|
{
|
|
circle.R = GetDistance(circle.Stroke.StylusPoints[0].ToPoint(),
|
|
circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].ToPoint()) / 2;
|
|
circle.Centroid = new Point(
|
|
(circle.Stroke.StylusPoints[0].X +
|
|
circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].X) / 2,
|
|
(circle.Stroke.StylusPoints[0].Y +
|
|
circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].Y) / 2
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// 退出多指书写模式，恢复InkCanvas的TouchDown事件绑定
|
|
private void ExitMultiTouchModeIfNeeded()
|
|
{
|
|
if (isInMultiTouchMode)
|
|
{
|
|
inkCanvas.StylusDown -= MainWindow_StylusDown;
|
|
inkCanvas.StylusMove -= MainWindow_StylusMove;
|
|
inkCanvas.StylusUp -= MainWindow_StylusUp;
|
|
inkCanvas.TouchDown -= MainWindow_TouchDown;
|
|
inkCanvas.TouchDown += Main_Grid_TouchDown;
|
|
if (inkCanvas.EditingMode != InkCanvasEditingMode.EraseByPoint)
|
|
{
|
|
inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
|
|
}
|
|
// 保存非笔画元素（如图片）
|
|
var preservedElements = PreserveNonStrokeElements();
|
|
inkCanvas.Children.Clear();
|
|
// 恢复非笔画元素
|
|
RestoreNonStrokeElements(preservedElements);
|
|
isInMultiTouchMode = false;
|
|
// 关闭多指书写时，恢复手掌擦开关
|
|
if (palmEraserWasEnabledBeforeMultiTouch)
|
|
{
|
|
Settings.Canvas.EnablePalmEraser = true;
|
|
if (ToggleSwitchEnablePalmEraser != null)
|
|
ToggleSwitchEnablePalmEraser.IsOn = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// 进入多指书写模式，绑定Main_Grid_TouchDown
|
|
private void EnterMultiTouchModeIfNeeded()
|
|
{
|
|
if (!isInMultiTouchMode)
|
|
{
|
|
inkCanvas.StylusDown += MainWindow_StylusDown;
|
|
inkCanvas.StylusMove += MainWindow_StylusMove;
|
|
inkCanvas.StylusUp += MainWindow_StylusUp;
|
|
inkCanvas.TouchDown += MainWindow_TouchDown;
|
|
inkCanvas.TouchDown -= Main_Grid_TouchDown;
|
|
if (inkCanvas.EditingMode != InkCanvasEditingMode.EraseByPoint)
|
|
{
|
|
inkCanvas.EditingMode = InkCanvasEditingMode.None;
|
|
}
|
|
// 保存非笔画元素（如图片）
|
|
var preservedElements = PreserveNonStrokeElements();
|
|
inkCanvas.Children.Clear();
|
|
// 恢复非笔画元素
|
|
RestoreNonStrokeElements(preservedElements);
|
|
isInMultiTouchMode = true;
|
|
// 启用多指书写时，自动禁用手掌擦
|
|
palmEraserWasEnabledBeforeMultiTouch = Settings.Canvas.EnablePalmEraser;
|
|
Settings.Canvas.EnablePalmEraser = false;
|
|
if (ToggleSwitchEnablePalmEraser != null)
|
|
ToggleSwitchEnablePalmEraser.IsOn = false;
|
|
}
|
|
}
|
|
}
|
|
}
|