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Updated MapPolypoint and PolygonCollection

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ClemensFischer 2026-01-21 22:27:29 +01:00
parent 81707c8ac0
commit f86f1d3c28
6 changed files with 64 additions and 197 deletions
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1
MapControl/WPF/MapControl.WPF.csproj
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@ -18,7 +18,6 @@
<ItemGroup>
<Compile Remove="..\Shared\Matrix.cs" />
<Compile Remove="..\Shared\PolygonCollection.cs" />
</ItemGroup>
<ItemGroup Condition="'$(TargetFramework)'=='net462'">

45
MapControl/WPF/MapPolypoint.WPF.cs
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@ -1,55 +1,12 @@
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Windows;
using System.Windows.Media;
namespace MapControl
{
/// <summary>
/// Base class of MapPolyline, MapPolygon and MapMultiPolygon.
/// </summary>
public class MapPolypoint : MapPath, IWeakEventListener
public partial class MapPolypoint : MapPath
{
public static readonly DependencyProperty FillRuleProperty =
DependencyPropertyHelper.Register<MapPolygon, FillRule>(nameof(FillRule), FillRule.EvenOdd,
(polypoint, oldValue, newValue) => ((StreamGeometry)polypoint.Data).FillRule = newValue);
public FillRule FillRule
{
get => (FillRule)GetValue(FillRuleProperty);
set => SetValue(FillRuleProperty, value);
}
protected MapPolypoint()
{
Data = new StreamGeometry();
}
protected void DataCollectionPropertyChanged(IEnumerable oldValue, IEnumerable newValue)
{
if (oldValue is INotifyCollectionChanged oldCollection)
{
CollectionChangedEventManager.RemoveListener(oldCollection, this);
}
if (newValue is INotifyCollectionChanged newCollection)
{
CollectionChangedEventManager.AddListener(newCollection, this);
}
UpdateData();
}
bool IWeakEventListener.ReceiveWeakEvent(Type managerType, object sender, EventArgs e)
{
UpdateData();
return true;
}
protected void UpdateData(IEnumerable<Location> locations, bool closed)
{
using var context = ((StreamGeometry)Data).Open();

69
MapControl/WPF/PolygonCollection.WPF.cs
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@ -1,69 +0,0 @@
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.Linq;
using System.Windows;
namespace MapControl
{
/// <summary>
/// An ObservableCollection of IEnumerable of Location. PolygonCollection adds a CollectionChanged
/// listener to each element that implements INotifyCollectionChanged and, when such an element changes,
/// fires its own CollectionChanged event with NotifyCollectionChangedAction.Replace for that element.
/// </summary>
public class PolygonCollection : ObservableCollection<IEnumerable<Location>>, IWeakEventListener
{
public bool ReceiveWeakEvent(Type managerType, object sender, EventArgs e)
{
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Replace, sender, sender));
return true;
}
protected override void InsertItem(int index, IEnumerable<Location> polygon)
{
if (polygon is INotifyCollectionChanged addedPolygon)
{
CollectionChangedEventManager.AddListener(addedPolygon, this);
}
base.InsertItem(index, polygon);
}
protected override void SetItem(int index, IEnumerable<Location> polygon)
{
if (this[index] is INotifyCollectionChanged removedPolygon)
{
CollectionChangedEventManager.RemoveListener(removedPolygon, this);
}
if (polygon is INotifyCollectionChanged addedPolygon)
{
CollectionChangedEventManager.AddListener(addedPolygon, this);
}
base.SetItem(index, polygon);
}
protected override void RemoveItem(int index)
{
if (this[index] is INotifyCollectionChanged removedPolygon)
{
CollectionChangedEventManager.RemoveListener(removedPolygon, this);
}
base.RemoveItem(index);
}
protected override void ClearItems()
{
foreach (var polygon in this.OfType<INotifyCollectionChanged>())
{
CollectionChangedEventManager.RemoveListener(polygon, this);
}
base.ClearItems();
}
}
}