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Fixed MapItem.MapTransform implementation

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ClemensFischer 2023-01-19 17:16:02 +01:00
parent d7593cbe8c
commit fd13503613
11 changed files with 229 additions and 127 deletions
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58
MapControl/Shared/MapItemsControl.cs
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@ -8,77 +8,19 @@ using Windows.Foundation;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Data;
using Microsoft.UI.Xaml.Media;
#elif UWP
using Windows.Foundation;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Media;
#else
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Media;
#endif
namespace MapControl
{
/// <summary>
/// Container class for an item in a MapItemsControl.
/// </summary>
public partial class MapItem : ListBoxItem
{
/// <summary>
/// Gets/sets MapPanel.AutoCollapse.
/// </summary>
public bool AutoCollapse
{
get => (bool)GetValue(AutoCollapseProperty);
set => SetValue(AutoCollapseProperty, value);
}
/// <summary>
/// Gets/sets MapPanel.Location.
/// </summary>
public Location Location
{
get => (Location)GetValue(LocationProperty);
set => SetValue(LocationProperty, value);
}
/// <summary>
/// Gets a Transform for scaling and rotating geometries
/// in map coordinates (meters) to view coordinates (pixels).
/// </summary>
public Transform MapTransform => mapTransform ?? (mapTransform = new MatrixTransform());
private MatrixTransform mapTransform;
protected override Size ArrangeOverride(Size bounds)
{
var size = base.ArrangeOverride(bounds);
// If the MapTransform property is used, update its Matrix property
// (after calling base.ArrangeOverride to avoid rendering issues).
//
if (mapTransform != null)
{
var parentMap = (VisualTreeHelper.GetParent(this) as MapPanel)?.ParentMap;
if (parentMap != null && Location != null)
{
var scale = parentMap.GetScale(Location);
var matrix = new Matrix(scale.X, 0d, 0d, scale.Y, 0d, 0d);
matrix.Rotate(parentMap.ViewTransform.Rotation);
mapTransform.Matrix = matrix;
}
}
return size;
}
}
/// <summary>
/// Manages a collection of selectable items on a Map.
/// </summary>