规范类名及命名空间名称

2026-04-13 14:35:37 +08:00
parent c430ec229b
commit ace1c70ddf
217 changed files with 1271 additions and 1384 deletions
@@ -0,0 +1,94 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using System.Windows;
+using System.Windows.Media;
+using System.Windows.Shapes;
+
+namespace XP.ImageProcessing.RoiControl
+{
+    /// <summary>
+    /// 多边形Points附加行为，支持ObservableCollection绑定
+    /// </summary>
+    public static class PolygonPointsBehavior
+    {
+        private static readonly Dictionary<Polygon, ObservableCollection<Point>> _attachedCollections
+            = new Dictionary<Polygon, ObservableCollection<Point>>();
+
+        public static ObservableCollection<Point> GetPointsSource(DependencyObject obj)
+        {
+            return (ObservableCollection<Point>)obj.GetValue(PointsSourceProperty);
+        }
+
+        public static void SetPointsSource(DependencyObject obj, ObservableCollection<Point> value)
+        {
+            obj.SetValue(PointsSourceProperty, value);
+        }
+
+        public static readonly DependencyProperty PointsSourceProperty =
+            DependencyProperty.RegisterAttached(
+                "PointsSource",
+                typeof(ObservableCollection<Point>),
+                typeof(PolygonPointsBehavior),
+                new PropertyMetadata(null, OnPointsSourceChanged));
+
+        private static void OnPointsSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            if (!(d is Polygon polygon))
+                return;
+
+            // 清理旧的订阅
+            if (e.OldValue is ObservableCollection<Point> oldCollection)
+            {
+                oldCollection.CollectionChanged -= GetCollectionChangedHandler(polygon);
+                _attachedCollections.Remove(polygon);
+            }
+
+            // 设置新的订阅
+            if (e.NewValue is ObservableCollection<Point> newCollection)
+            {
+                // 初始化Points
+                UpdatePolygonPoints(polygon, newCollection);
+
+                // 监听集合变化
+                NotifyCollectionChangedEventHandler handler = (s, args) => UpdatePolygonPoints(polygon, newCollection);
+                newCollection.CollectionChanged += handler;
+
+                // 保存引用以便后续清理
+                _attachedCollections[polygon] = newCollection;
+
+                // 监听Polygon卸载事件以清理资�?
+                polygon.Unloaded += (s, args) =>
+                {
+                    if (_attachedCollections.TryGetValue(polygon, out var collection))
+                    {
+                        collection.CollectionChanged -= handler;
+                        _attachedCollections.Remove(polygon);
+                    }
+                };
+            }
+        }
+
+        private static NotifyCollectionChangedEventHandler GetCollectionChangedHandler(Polygon polygon)
+        {
+            return (s, args) =>
+            {
+                if (s is ObservableCollection<Point> collection)
+                {
+                    UpdatePolygonPoints(polygon, collection);
+                }
+            };
+        }
+
+        private static void UpdatePolygonPoints(Polygon polygon, ObservableCollection<Point> points)
+        {
+            // 使用Dispatcher确保在UI线程更新
+            polygon.Dispatcher.BeginInvoke(new Action(() =>
+            {
+                // 创建新的PointCollection以触发UI更新
+                polygon.Points = new PointCollection(points);
+            }), System.Windows.Threading.DispatcherPriority.Render);
+        }
+    }
+}