ClemensFischer/XAML-Map-Control
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C#14 field backed properties

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ClemensFischer 2025-12-27 21:24:01 +01:00
parent 5d390071c6
commit be427c195a
20 changed files with 89 additions and 106 deletions
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31
MapControl/Shared/MapItem.cs
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@ -19,9 +19,6 @@ namespace MapControl
/// </summary>
public partial class MapItem : ListBoxItem, IMapElement
{
private MapBase parentMap;
private MatrixTransform mapTransform;
/// <summary>
/// Gets/sets MapPanel.AutoCollapse.
/// </summary>
@ -45,21 +42,21 @@ namespace MapControl
/// </summary>
public MapBase ParentMap
{
get => parentMap;
get;
set
{
if (parentMap != null)
if (field != null)
{
parentMap.ViewportChanged -= OnViewportChanged;
field.ViewportChanged -= OnViewportChanged;
}
parentMap = value;
field = value;
if (parentMap != null && mapTransform != null)
if (field != null && MapTransform != null)
{
// Attach ViewportChanged handler only if MapTransform is actually used.
//
parentMap.ViewportChanged += OnViewportChanged;
field.ViewportChanged += OnViewportChanged;
UpdateMapTransform();
}
@ -70,23 +67,23 @@ namespace MapControl
/// Gets a Transform for scaling and rotating geometries
/// in map coordinates (meters) to view coordinates (pixels).
/// </summary>
public Transform MapTransform
public MatrixTransform MapTransform
{
get
{
if (mapTransform == null)
if (field == null)
{
mapTransform = new MatrixTransform();
field = new MatrixTransform();
if (parentMap != null)
if (ParentMap != null)
{
parentMap.ViewportChanged += OnViewportChanged;
ParentMap.ViewportChanged += OnViewportChanged;
UpdateMapTransform();
}
}
return mapTransform;
return field;
}
}
@ -97,9 +94,9 @@ namespace MapControl
private void UpdateMapTransform()
{
if (mapTransform != null && parentMap != null && Location != null)
if (MapTransform != null && ParentMap != null && Location != null)
{
mapTransform.Matrix = parentMap.GetMapTransform(Location);
MapTransform.Matrix = ParentMap.GetMapTransform(Location);
}
}
}