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54 lines
1.4 KiB
C#
54 lines
1.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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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.Media;
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namespace Txgy.EWS.Client.Common.Helpers
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{
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public class VisualHost : Canvas
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{
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public List<Visual> visuals = new List<Visual>();
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//获取Visual的个数
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protected override int VisualChildrenCount
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{
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get { return visuals.Count; }
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}
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//获取Visual
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protected override Visual GetVisualChild(int index)
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{
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return visuals[index];
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}
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//添加Visual
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public void AddVisual(Visual visual)
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{
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visuals.Add(visual);
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Application.Current.Dispatcher.Invoke(() => base.AddVisualChild(visual));
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Application.Current.Dispatcher.Invoke(() => base.AddLogicalChild(visual));
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}
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//删除Visual
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public void RemoveVisual(Visual visual)
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{
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visuals.Remove(visual);
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Application.Current.Dispatcher.Invoke(()=>base.RemoveVisualChild(visual));
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Application.Current.Dispatcher.Invoke(() => base.RemoveLogicalChild(visual));
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}
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//命中测试
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public DrawingVisual GetVisual(Point point)
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{
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HitTestResult hitResult = VisualTreeHelper.HitTest(this, point);
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return hitResult.VisualHit as DrawingVisual;
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}
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}
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}
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